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Background Total hip arthroplasty (THA) is one of the most successful procedures in orthopedic surgery. The most frequent THA indications are osteoarthritis and avascular necrosis, whereas symptomatic aseptic loosening is the most common indication to revision surgery. Chondrosarcoma (CS) is the most frequent bone sarcoma in adults, and proximal femur is the most prevalent location. Wide resection is the treatment of choice.We report 3 cases of unrecognized high-grade CS in the setting of primary or revision THA and reviewed the literature on this rare clinical presentation. Methods A systematic literature review on CS in the setting of THA, published between 1980 and 2020, was performed on PubMed, Embase, Medline, Ovid SP, and Web of Science, using the guidelines set in the Preferred Reporting Items for Systematic Reviews and Mata-analyses (PRISMA). Results Case series: Three patients were referred to our sarcoma center after failure of THA due to unrecognized high-grade CS. All 3 had rapid fatal outcome. Literature review: Fifty-nine articles were identified, of which 8 were included in the study. They confirmed that primary or revision THA failure due to unrecognized CS is extremely rare, with only few cases reported in the literature. Conclusions Before proceeding to primary or revision arthroplasty, diagnosis must be ascertained. Atypical presentation of a common pathology, such as osteoarthritis, avascular necrosis, or aseptic loosening of an endoprosthesis, should raise suspicion for another cause to symptoms, and additional workup be performed. As our cases demonstrated, unrecognized or inadequately managed bone sarcoma may lead to poor or even fatal outcome.

Background Chordoma is a rare malignant tumor of the axial skeleton. Percutaneous cryoablation (PCA) is a minimally invasive technique that allows freezing of tumors under imaging control. The purpose of our retrospective study was to investigate the outcome of PCA in a selected cohort of patients with sacrococcygeal chordoma, with a minimum of 5 years follow-up. Materials and methods Four patients were treated in 10 sessions. The mean follow-up was 57.3 months. We evaluated the feasibility, the procedure-related complications, the impact on pain control and oncological outcomes. Results Freezing of 100% of the tumor volume was possible in 60%. Pain control was not reliably evaluable. Local recurrence occurred in 90% of the treated lesions; the mean time to progression was 8.1 months (range 1.5-16). At last follow-up, one patient had died of the disease, one of another cause and one was receiving the best supportive care. The only patient alive without the disease had received additional carbon-ion radiotherapy. The 5-year survival rate after index PCA was 50%. Conclusion Complete freezing of the tumor was technically challenging, mainly due to the complex local anatomy. Recurrence occurred in 90% of the lesions treated. PCA should be considered with caution in the curative management of sacrococcygeal chordoma.

Introduction Scapular dyskinesis caused by traumatic detachment of the serratus anterior muscle from its insertion site on the inferior angle of the scapula is a very rare condition. Only a few case reports describe such an injury which is reported to be treated conservatively in almost all studies. Methods We report our unique experience with a 58-year-old policeman who was referred to our clinic four months after a direct trauma on his scapula. He presented with shoulder pain and clinically obvious medial winging for which no specific treatment had been undertaken until then. Delayed initial management with well conducted physical therapy for an additional 3 months showed no improvement on the patient's complaint. Electroneuromyography was normal. Radiographs and computed tomography revealed a bony flake at the inferior angle of the scapula, raising our suspicion of serratus anterior muscle avulsion which was confirmed by MRI. We attempted a surgical exploration and transosseous reinsertion of the avulsed serratus anterior muscle. Results Postoperative controls were done at 6 weeks, 3 months and 1 year. 3 months after surgery, the patient reported complete relief of his shoulder pain and we observed back to normal shoulder range of motion without scapular dyskinesis. Follow-up radiographs showed good positioning and consolidation of the avulsed bony fragment. At 1 year, the patient reported complete return to normal activity and quality of life with no relapse nor surgical complication. Constant Shoulder Score and Subjective Shoulder Value raised from 52 and 50% before surgery to 80 and 90% respectively at one-year postoperative. Conclusion Surgical repair of traumatic avulsions of the serratus anterior muscle might be a safe and efficient therapeutic option.

Introduction: The olecranon Chevron osteotomy (OCO) is commonly used to approach complex intraarticular fractures of the distal humerus. Predrilled tension band wiring (TBW) has historically been used to fix OCO. However, clinical outcomes are burdened by secondary loss of reduction and up to 21.3% non-union rates. The biomechanical stability of anatomic locking compression plate (LCP) was reported to be superior to TBW in olecranon fracture fixation. We hypothesised that this implant may also be superior to TBW in the anatomic reconstruction of the articular surfaces of the ulnar greater sigmoid notch after OCO by predrilling the holes of the angular stable plate with the threaded drill guide prior to osteotomy., Materials and methods: Lateral standardised and calibrated radiographs of twenty synthetic ulnar bones were obtained using a custom-made holder prior to preparation by a senior orthopaedic trauma surgeon. Ten specimens were then predrilled using the threaded drill bit guide of an olecranon LCP, while the other ten samples were predrilled with two 1.6 mm Kirschner wires. A distal "V" OCO was performed using a 0.6 mm oscillating saw. After repositioning and fixation with the corresponding device, lateral radiographs were repeated. Two independent observers used the TraumaCad planning software to document the articular geometry of the ulnar greater sigmoid notch pre- and postoperatively. The diameter of the best-fitting circle (diameter), the distance between the tip of the coronoid and the olecranon processes (distance) and the maximum articular depth were measured., Results: With the TBW technique, after OCO and fixation, all three postoperative measurements were significantly (p = 0.13). Inter and intra-observer measurement reliability was strong to very strong (intraclass correlation coefficients >= 0.793) for all three variables., Conclusion: Our study reveals that the predrilled LCP technique is more accurate than the predrilled TBW in restoring the anatomic articular geometry of the ulnar greater sigmoid notch after OCO. (C) 2020 Elsevier Ltd. All rights reserved.

OBJECTIVES Lacerations comprise 5.6-33.6% of skiing/snowboarding related injuries. This study aimed to investigate the mechanism of injury and the location of these lacerations and propose preventive measures. METHODS After our state ethics committee approval, we retrospectively reviewed the medical records and surgical protocols of 46 patients (mean age (±SD) 34.6 (±15.3); 71.4% men) treated for severe skiing/snowboarding lacerations at our level-1 trauma centre between 2016 and 2021. Patients were asked to answer a questionnaire on their skiing experience, equipment used and the circumstances of the accident. RESULTS Lacerations around the hip, thigh, and knee accounted for 94%. The latter was the most common location (45%). Although 91.3% of patients wore appropriate clothing and full standard protection equipment, it did not offer any extra-resistance against skiing/snowboarding's edges. Skiers were more affected (91.3%) than snowboarders (8.7%). The most common mechanism of injury was inadvertent release of the bindings (52.2%), followed by insufficient ski level for the slope (21.7%) and collisions (17.4%). Long-term trends demonstrated an increasing incidence. CONCLUSION Identification of body areas at risk and the mechanisms of injury were the most significant findings of this work. These data encourage the development of specific injury prevention programs as the occurrence of these lesions tended to increase over the last few years. To reduce their incidence, we propose skiers to have their bindings regularly adjusted and manufacturers to develop cut-resistant skiwear. LEVEL OF EVIDENCE IV.

Introduction: Knee arthrodesis is an established procedure for limb salvage after failed total knee arthroplasty (TKA) in cases of recurrent infection, soft tissue damage, reduced bone stock or with a deficient extensor mechanism. Walking with an arthrodesis is more efficient and less costly in terms of energy expenditure than above-knee amputation. Surgical options include an arthrodesis nail, external fixator or compression plate. We present our results of knee arthrodesis using the modular Wichita Fusion Nail® in patients after infected TKA. Methods: Fifteen patients with irretrievably failed TKA, due to infection, who underwent arthrodesis with the Wichita Fusion Nail® from 2004 to 2012 were retrospectively reviewed to assess fusion rate, time to fusion, complication rate, including new infections, and ambulatory status. Results: Three patients were lost to follow-up. Mean follow-up was 33months (6-132months). At their most recent follow-up, all patients were walking with full weight bearing on a fused arthrodesis. Mean time to union was 9months (3-29months). Three patients necessitated a revision arthrodesis to achieve union after a mean of 5months after the last procedure. Conclusion: Arthrodesis with the Wichita Fusion Nail® provides satisfactory results in patients with failure after infected TKA, with 75% primary union rate and no new or persistent infection at last follow-up visit. Although burdened with a high complication rate, it represents an acceptable option for limb salvage in this particular pathology.

Background Bone metastases are frequently painful and may lead to various complications that can affect quality of life. While external beam radiation therapy is the standard first-line treatment, 20-30% of patients do not experience sufficient pain relief. Cryoablation is increasingly being used for the treatment of musculoskeletal metastases. The purpose of our retrospective study was to analyze pain relief and local disease control after percutaneous image-guided cryoablation (PCA) therapy of painful bone metastases. Materials and methods Sixteen patients treated with PCA for painful bone metastases (n = 18) over a 5-year period (from June 2011 to June 2016) were retrospectively reviewed. Five patients also benefited from long bone fixation because of an impending fracture. We analyzed the impact of treatment on pain relief, using a numerical rating scale (NRS), and local disease control. Results The mean follow-up period was 12 months (range, 1.5–39 months). At last oncological outpatient consultation, 75% (12/16) of patients had good pain relief, while 63% (10/16) had locally stable disease or no local recurrence of the treated bone metastases. The mean NRS score decreased significantly from 3.3 to 1.2 after PCA (p = 0.0024). The five patients with concomitant long bone fixation all had satisfactory pain relief at the last follow-up visit. Conclusion PCA is a safe and valid treatment option for pain and local disease control in cases of painful bone metastases after failed standard first-line therapy. This technique can also be effectively associated to prophylactic long bone fixation and may allow for easier rehabilitation protocols when treating weight-bearing bones. Level of evidence IV, Retrospective case series.

Resume Contexte Les metastases osseuses sont frequemment douloureuses et peuvent mener a des complications qui ont une incidence sur la qualite de vie. Bien que la radiotherapie soit le traitement standard de premiere ligne, 20–30 % des patients ne sont pas soulages de leurs douleurs de facon satisfaisante. La cryoablation est utilisee de facon croissante pour le traitement des metastases musculosquelettiques. Le but de notre etude retrospective est d’analyser le soulagement de la douleur ainsi que le controle local de la maladie apres cryoablation percutanee (CP) guidee par imagerie de metastases osseuses douloureuses. Materiel et methodes Seize patients traites par CP pour des metastases osseuses douloureuses (n = 18) sur une periode de 5 ans (de juin 2011 a juin 2016) ont ete revu de facon retrospective. Cinq d’entre eux ont egalement beneficie d’une osteosynthese prophylactique en raison d’une menace de fracture. Nous avons analyse l’impact de ce traitement sur le soulagement de la douleur, en utilisant un « numerical rating scale » (NRS), ainsi que sur le controle local de la maladie. Resultats La duree de suivi moyenne etait de 12 mois (de 1,5 a 39 mois). Lors de la derniere consultation oncologique ambulatoire, 75 % (12/16) des patients etaient bien controles sur le plan de la douleur, tandis que 63 % (10/16) avaient une maladie oncologique localement stable ou pas de recidive locale des metastases osseuses traitees. Le score NRS moyen a diminue significativement de 3,3 a 1,2 apres la CP (p = 0,0024). Les cinq patients ayant beneficie d’une osteosynthese concomitante presentaient tous un soulagement satisfaisant de la douleur lors du dernier controle. Conclusion La CP est une option therapeutique sure et valide pour le traitement de la douleur et le controle local de la maladie en cas de metastases osseuses douloureuses apres echec des therapies standards de premiere ligne. Cette technique peut egalement etre efficace en association avec une osteosynthese prophylactique et pourrait permettre une rehabilitation facilitee lors du traitement d’un membre portant. Niveau de preuve IV, serie de cas retrospective.

Humeral shaft fractures are relatively common, representing approximately 1% to 5% of all fractures. Conservative management is the treatment of choice for most humeral shaft fractures and offers functional results and union rates that are not inferior to surgical management. Age and oblique fractures of the proximal third are risk factors for nonunion. Surgical indication threshold should be lower in patients older than 55 years presenting with this type of fracture. Functional outcomes and union rates after plating and intramedullary nailing are comparable, but the likelihood of shoulder complications is higher with intramedullary nailing. There is no advantage to early exploration of the radial nerve even in secondary radial nerve palsy. Cite this article: EFORT Open Rev 2021;6:24-34. DOI: 10.1302/2058-5241.6.200033

Humeral shaft fractures are relatively common, representing up to 5% of all fractures. Conservative management is the treatment of choice for most humeral shaft fractures and offers good functional and union outcomes. Age and oblique fractures of the proximal third are two risk factors for non-union. Surgical indication threshold should be lower for patients with these factors. Functional outcomes and union rates after plating and intramedullary nailing are comparable, but the likelihood of shoulder complications is higher with intramedullary nailing. Finally, there is no advantage to early exploration of the radial nerve even in case of secondary radial nerve palsy.Les fractures de la diaphyse humérale sont relativement fréquentes et représentent jusqu’à 5 % des fractures. Le traitement conservateur par brace est le traitement de choix pour la majorité des fractures. Il permet un taux élevé de consolidation et est associé à de bons résultats fonctionnels. L’âge ainsi que les fractures obliques du tiers proximal sont deux facteurs de risque de pseudarthrose en présence desquels une prise en charge chirurgicale doit être plus facilement envisagée. Lorsqu’ils sont indiqués, l’ostéosynthèse par plaque et l’enclouage centromédullaire offrent des taux de consolidation et des résultats fonctionnels équivalents, avec cependant un risque de problème d’épaule plus important après enclouage. Finalement, l’exploration chirurgicale immédiate du nerf radial n’est pas recommandée, même en cas de parésie secondaire à la réduction de la fracture.

Purpose Knee arthrodesis is an established procedure for limb salvage in cases of recurrent infection, total knee arthroplasty soft tissue defect, poor bone stock or a deficient extensor mechanism. Surgical options include compression plate, external fixator and arthrodesis nail. Different types of nail exist: long fusion nail, short modular nail and bridging nail. This study presents the results on knee arthrodesis using different types of intramedullary nails. The aim is to assess if a specific type of nail has a better fusion rate, clinical outcome and lower complication rate. Methods A mono-centric retrospective study of 48 knees arthrodesis was performed between 2000 and 2018. 15 T2™ Arthrodesis Nail, 6 OsteoBridge® Knee Arthrodesis and 27 Wichita® fusion nail were used. The mean clinic and radiological follow-up was 9.8 ± 3.8 years (2.6–18 years). Results Fusion rate was 89.6%. Time to fusion was 6.9 months. Mean Parker score was 6.9/9 points. Visual Analogic Scale was 1.9. The Wichita® fusion nail showed better results in terms of fusion, time to fusion and clinical outcome measured by Parker score and VAS but without statistical significance. The early revision rate was 10.4% and 20.8% presented a late complication requiring a surgery, due to nonunion or infection. 93.3% of infection was cured. Two patients live with a fistula (4.2%) and 1 was amputated (2.1%). Conclusion Although burdened by a big complication rate, knee arthrodesis with an intramedullary nail provides satisfactory results and is a good alternative to above-knee-amputation. The Wichita® fusion nail shows a tendency to better results compared to the two other nails. Level of evidence Case series, level IV

Background Cutibacterium acnes is one of the major pathogens responsible for infection after shoulder surgery. Surgical dissection of the dermis may expose C acnes from sebum-producing hair follicles. Because of contact with the surgeon's gloves and instruments, further spread occurs throughout the surgical field. The purpose of this study was to determine whether subcutaneous tissue disinfection could reduce the C acnes culture rate in primary open shoulder surgery. Methods All patients eligible for primary open shoulder surgery by a deltopectoral approach were prospectively enrolled in our 2-arm, randomized, single-blinded clinical trial. In all patients, a skin swab of the operative field was taken prior to standard surgical skin preparation. After exposure of the deltoid fascia, the disinfection group received an additional preparation of the subcutaneous layer with povidone-iodine solution. Once the proximal humerus was completely exposed, 5 swabs from different sites were taken for microbiological examination according to a strict specimen collection protocol. All cultures were incubated in aerobic and anaerobic conditions for 14 days. Results Between February and December 2019, 108 patients were enrolled in the 2 groups: treatment (n = 70) and control (n = 38). The 2 groups did not show any significant difference in terms of sex, age, body mass index, or occurrence of diabetes. The subcutaneous disinfection protocol significantly reduced the positive culture rate of the operating field for all germs combined (P = .036) and specifically for C acnes (P = .013). The reduction of positive swabs for C acnes was significant for the surgeon's gloves (P = .041), as well as the retractors (P = .007). Conclusion Disinfection of the subcutaneous tissue significantly reduced the C acnes culture rate during primary open shoulder surgery. We highly recommend this simple step as an adjunct to the current surgical practice to limit iatrogenic contamination of the surgical field. Future studies may observe a reduction in postoperative shoulder infection owing to this practice.

Cryoablation (CA) has gained popularity in the treatment of benign and malignant musculoskeletal tumors. While extra-abdominal desmoid (EAD) tumors are not malignant, they remain challenging to treat because of their high local recurrence rate. We reviewed all EAD tumors treated with CA at our institution between November 2012 and March 2020. Fourteen procedures were performed on nine females and one male (mean age, 33 ± 18 years) as either first-line (n = 4) or salvage therapy (n = 6) with curative intent (n = 8) or tumor debulking (n = 2). Mean tumor size was 63.6 cm3 (range, 3.4–169 cm3). Contrast-enhanced MRI was performed before treatment and at 3-, 6-, and 12-month follow-up. Treatment outcome was based on the change in enhanced tumor volume (ET-V). For curatively treated patients, the mean ET-V change was −97 ± 7%, −44 ± 143%, and +103 ± 312% at 3, 6, and 12 months, respectively. For debulking patients, the mean ET-V change was −98 ± 4%, +149 ± 364%, and +192 ± 353% at 3, 6, and 12 months, respectively. During a mean follow-up of 53.7 months (range, 12–83 months), one grade III and one grade IV complication were noted. We found CA to be safe and well tolerated in patients with EAD.

Bilateral agenesis of the long head of the biceps brachial tendon (LHB) is a very rare variation of the anatomy. We report a case of an 18-year-old man with bilateral agenesis of the long head of the biceps brachii tendon. We present initial findings, radiographical examinations and the follow-up of an unusual entity. Diagnosis of agenesis of the LHB can be challenging especially in cases of traumatic shoulder pain. It is not a very known entity because of its rareness. However, it could be associated with other congenital anomalies. The absence of the LHB is easily ignored in the diagnostic process. Clinical examination should be a pitfall, radiological examination is helpful to confirm the suspicion of LHB absence. MRI is often the first choice, although ultrasonography is cheaper and much easier to access and it is an excellent tool to visualise this anatomic variation with empty or shallow intertubercular groove.

Aging of the population results in an increase of the incidence of cancer and bone metastases. The proximal femur is one of the most frequent locations of bone metastases. A pathological fracture has a major impact on the quality of life and potentially on survival. In case of impending fracture, prophylactic fixation is therefore strongly recommended. The management of metastases of the proximal femur depends on multiple parameters, life expectancy and fracture risk being the most important ones. If survival is estimated to be less than 6 weeks, surgery is generally not indicated. Beyond 6 weeks, surgical indication essentially depends on location of the metastases on the proximal femur and the presence of a fracture.L’augmentation de l’espérance de vie s’accompagne d’une croissance de l’incidence des cancers et des métastases osseuses. Le fémur proximal est un des sites les plus fréquents de métastases osseuses. Une fracture pathologique dans cette localisation a un impact majeur sur la qualité de vie et potentiellement sur la survie du patient. Un traitement chirurgical prophylactique est ainsi recommandé en cas de risque de fracture imminente. La prise en charge des métastases fémorales proximales se décide en fonction de multiples paramètres, dont la survie théorique et le risque de fracture sont les plus importants. Si la survie est estimée à moins de 6 semaines, une chirurgie n’est en général pas indiquée. Au-delà, l’indication chirurgicale dépend essentiellement de la localisation des lésions et de la présence d’une fracture associée.

BACKGROUND The usual treatment of septic shoulder arthritis consists of arthroscopic or open lavage and debridement. However, in patients with advanced osteoarthritic changes and/or massive rotator cuff tendon tears, infection eradication can be challenging to achieve and the functional outcome is often not satisfying even after successful infection eradication. In such cases a two-stage approach with initial resection of the native infected articular surfaces, implantation of a cement spacer before final treatment with a total shoulder arthroplasty in a second stage is gaining popularity in recent years with the data in literature however being still limited. AIM To evaluate the results of a short interval two-stage arthroplasty approach for septic arthritis with concomitant advanced degenerative changes of the shoulder joint. METHODS We retrospectively included five consecutive patients over a five-year period and evaluated the therapeutic management and the clinical outcome assessed by disability of the arm, shoulder and hand (DASH) score and subjective shoulder value (SSV). All procedures were performed through a deltopectoral approach and consisted in a debridement and synovectomy, articular surface resection and insertion of a custom made antibiotic enriched cement spacer. Shoulder arthroplasty was performed in a second stage. RESULTS Mean age was 61 years (range, 47-70 years). Four patients had previous surgeries ahead of the septic arthritis. All patients had a surgical debridement ahead of the index procedure. Mean follow-up was 13 mo (range, 6-24 mo). Persistent microbiological infection was confirmed in all five cases at the time of the first stage of the procedure. The shoulder arthroplasties were performed 6 to 12 wk after insertion of the antibiotic-loaded spacer. There were two hemi and three reverse shoulder arthroplasties. Infection was successfully eradicated in all patients. The clinical outcome was satisfactory with a mean DASH score and SSV of 18.4 points and 70% respectively. CONCLUSION Short interval two-stage approach for septic shoulder arthritis is an effective treatment option. It should nonetheless be reserved for selected patients with advanced disease in which lavage and debridement have failed.

The surgical treatment of a displaced fracture of the clavicular shaft generally consists in an open reduction and plate fixation. The most common complications of the classic direct "transplatysma" approach are hardware related. These consist of simple hardware irritations requiring secondary plate removal but also feared wound healing problems ranging from dehiscence to superficial and deep wound infections. In the present article, we describe the so-called "platysma-flap" approach in which the platysma muscle is entirely preserved and distally raised as a flap. This modified exposure allows to cover the osteosynthesis with a viable, well perfused soft tissue envelope and is a safe alternative to the standard "transplatysma" approach.

Lateral tibial plateau fractures are more frequent than medial fractures, and those with articular depression are particularly challenging because of high displacement risk. To prevent secondary subsidence, the gold standard is raft screws with a periarticular or anti-glide plate. Graft is used to fill the metaphyseal defect created by reduction in the depressed fragment. We present a case of Schatzker II fracture managed in a complete percutaneous fashion, with a new combined technique of raft screws and interference screw used as a support. A 51-year-old female sustained a Schatzker II tibial plateau fracture. Based on pre-operative CT, direction of reduction force to apply was drawn on coronal and sagittal cuts. Under fluoroscopic control, the split component of the fracture was reduced. The cortical window was then drilled in the lateral cortex, and a K wire advanced under the depressed fragment under fluoroscopic guidance. After fragment reduction with a bone impacter, internal fixation was completed by percutaneous introduction of two subchondral cortical screws. A bioabsorbable interference screw was then introduced in the impacter tunnel to support impacted bone under the reduced articular surface. Finally, a cortical screw was introduced, from anterior to posterior to prevent screw cut-out. The combination of subchondral screws in a jail technique with a bioabsorbable interference screw that we named metaphyseal tibia level (MTL) screw technique is, to our knowledge, not described. The MTL screw promises to be a true percutaneous reduction and fixation technique for Schatzker II and III fractures in patients with reasonable bone quality.

Resume Introduction L’utilisation d’une prothese totale d’epaule anatomique (PTE) pour traiter une arthrose gleno-humerale avec erosion posterieure peut etre associee a des complications precoces (recidive de subluxation posterieure, descellement de l’implant glenoidien). Afin d’eviter ces problemes mecaniques, la prothese d’epaule inversee (PTEI) a recemment ete proposee dans cette indication en raison de la stabilite intrinseque de l’implant. Notre objectif est de presenter les resultats d’arthroplasties d’epaule anatomique et inversee dans le traitement de l’arthrose gleno-humerale avec erosion posterieure et retroversion d’au moins 20°. Hypothese Grâce a son dessin contraint, la PTEI previent la recidive de subluxation posterieure et pourrait diminuer la survenue de complications mecaniques. Methode La serie consecutive comprend 23 patients (27 epaules, 19 PTE et 8 PTEI) traites par arthroplastie totale d’epaule pour une arthrose gleno-humerale avec usure glenoidienne posterieure. L’âge moyen etait de 70 ans (47–85), l’angle de retroversion moyen de 28° (20–50) et l’index de subluxation moyen de 74 % (57–89). Nous avons evalue le score de Constant, la valeur subjective de l’epaule (SSV), les resultats du Quick DASH et du Simple Shoulder Test (SST) ainsi que les radiographies avec un suivi moyen de 52 mois (24–95). Resultats Les patients traites par PTE et PTEI obtiennent respectivement 65 patients et 65 patients au Constant Score, 79 % et 74 % pour la SSV, 16 patients et 27 patients pour le Quick DASH et 88 % et 78 % pour le SST. Deux PTE ont necessite une revision chirurgicale en raison d’une glene decelee. Cinquante-deux pour cent des PTE montrent un lisere radiologique complet et 11 % une recidive de subluxation. Conclusion Les complications sont frequentes apres arthroplastie d’epaule pour omarthrose avec erosion posterieure et retroversion importantes. La PTEI pourrait etre une alternative a la PTE chez certains patients, quel que soit l’etat de la coiffe des rotateurs. D’autres etudes de l’utilisation de la PTEI dans cette indication specifique, impliquant un suivi a plus long terme, sont requises. Niveau de preuve Niveau IV ; serie de cas retrospective.

Background Anatomical total shoulder arthroplasty (TSA) for glenohumeral osteoarthritis (OA) and severe posterior glenoid wear may entail early postoperative complications (recurrence of posterior subluxation, glenoid loosening). To avoid these mechanical problems, reverse shoulder arthroplasty (RSA) has recently been proposed, mainly for its intrinsic stability. Our purpose was to present the results of TSA and RSA in glenohumeral OA with posterior glenoid wear of at least 20°. Hypothesis By virtue of its constrained design, RSA could prevent recurrence of posterior subluxation and limit the occurrence of mechanical complications. Materials and methods A consecutive series of 23 patients (27 shoulders) were treated for glenohumeral OA with total shoulder prostheses: 19 TSAs and 8 RSAs. Mean age was 70 years (range, 47–85 years), mean retroversion angle 28° (20°–50°) and mean subluxation index 74% (57–89%). Constant Score, Subjective Shoulder Value (SSV), QuickDASH and Simple Shoulder Test (SST) were measured, and radiological examinations were performed at a mean follow-up of 52 months (24–95 months). Results TSA and RSA patients respectively displayed Constant Scores of 65 and 65, SSV of 79% and 74%, QuickDASH of 16 and 27, and SST of 88 and 78. Two patients underwent surgical revision of TSA because of glenoid loosening; 52% of TSA patients presented complete radiolucent lines and 11% recurrence of posterior subluxation. Conclusion Complications are frequently observed after shoulder arthroplasty for OA with severe glenoid retroversion. RSA could be an alternative to TSA for selected patients, independently of rotator cuff status. Studies on RSA in this specific indication with longer follow-up are now needed. Level of evidence Level IV; retrospective case series.