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Introduction: The Ascend Flex short stem implant has been reported to have good early clinical outcomes and low revision rates. This retrospective study aimed to evaluate the early to mid-term radiographic and clinical outcomes of patients who underwent primary shoulder arthroplasty with this implant. Methods: All consecutive patients who underwent primary shoulder arthroplasty with short uncemented Ascend Flex stems with a minimum of 24-month follow-up were included. The primary outcomes were revision and reoperation rate. The secondary outcomes included stress shielding and Oxford Shoulder Score (OSS). Results: Totally, 151 shoulders were eligible for inclusion. Out of which 73 were anatomic total shoulder arthroplasty, 77 were reverse geometry, and 1 was a hemiarthroplasty. Mean follow-up duration was 52 ± 17.2 months. The revision and reoperation rates were 0.6% and 2.6%, respectively. 1.3% anatomic total shoulder arthroplasty (aTSA) cases and 6.5% RSA cases demonstrated stress shielding. OSS improved from 16.1 ± 8.5 to 34.1 ± 12.3 in aTSA cases (Z = −3.98, p < 0.001) and from 15.6 ± 8.4 to 30.0 ± 13.5 in RSA cases (Z = −3.41, p < 0.001). Conclusion: These findings demonstrate reassuring outcomes for this implant at a mean of 52 months. Further reports are required to document the long-term outcomes for this component. [ABSTRACT FROM AUTHOR]

Inertial sensors may help clinicians to assess patients' movement and potentially support clinical decision making. Our aim was to determine whether shoulder range of motion during movement tasks measured using inertial sensors is capable of accurately discriminating between patients with different shoulder problems. Inertial sensors were used to measure 3-dimensional shoulder motion during 6 tasks of 37 patients on the waiting list for shoulder surgery. Discriminant function analysis was used to identify whether the range of motion of different tasks could classify patients with different shoulder problems. The discriminant function analysis could correctly classify 91.9% of patients into one of the 3 diagnostic groups based. The tasks that associated a patient with a particular diagnostic group were the following: subacromial decompression: abduction, rotator cuff repair of tears ≤5 cm: flexion and rotator cuff repair of tears >5 cm: combing hair, abduction, and horizontal abduction–adduction. The discriminant function analysis showed that range of motion measured by inertial sensors can correctly classify patients and could be used as a screening tool to support surgery planning. [ABSTRACT FROM AUTHOR]

Aims: Achieving purchase in native glenoid bone is essential for the stability of the glenoid baseplate when bone graft is used to address bone loss in both primary and revision shoulder arthroplasty procedures. The aim of this study is to assess the required depth of the baseplate peg in native bone when bone graft is used to result in satisfactory integration. Patients and methods: The CT scans of patients who underwent either primary or revision arthroplasty procedures with bone graft using the SMR Axioma Trabecular Titanium (TT) Metal Backed glenoid system were assessed. We measured the depth of the glenoid peg in native glenoid bone. Measurements were taken by two authors separately. Results: The scans of 53 patients (mean age 68 years) with a minimum follow-up of two years were reviewed. Implants included 12 anatomical and 41 reverse geometry prostheses. There were 17 primaries and 36 revisions: hemiarthroplasties (20) total (14) and reverse (2) implants. Bone grafts were from humeral head (15), iliac crest (34) and allograft (4). The mean depths were 8.8 mm (first assessor) and 9.10 mm (second assessor). The glenoid peg violated the glenoid vault in 32 patients and this did not adversely affect the outcome. There were three failures of implants all of which were aseptic failures and had peg penetration of less than 6 mm. Conclusions: The mean depth of glenoid peg in native bone was 9 mm (variation between 0.2 and 0.52 mm at 95% confidence interval). Aseptic loosening was seen with peg penetration less than 6 mm in native bone. Glenoid vault violation was not associated with loosening. [ABSTRACT FROM AUTHOR]