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No influence of femoral component rotation by the lateral femoral posterior condylar cartilage remnant technique on clinical outcomes in navigation-assisted TKA
- Source :
- Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. 25(11)
- Publication Year :
- 2017
-
Abstract
- To investigate whether cartilage thickness in the lateral femoral posterior condyle affects the femoral rotation angles on navigation and clinical outcomes of navigation-assisted total knee arthroplasty (TKA). This is a prospective randomized study of navigation-assisted TKA. Fifty cases underwent TKA without removal of the lateral posterior femoral cartilage (Group 1), and 56 cases underwent TKA with removal of the lateral posterior femoral cartilage (Group 2). The femoral rotation was evaluated using CT and compared with navigation values. The angle between the clinical transepicondylar axis and posterior condylar axis measured on CT was defined as the femoral rotation angle on CT. Elevation of the joint line and patellar measurements were also evaluated. The clinical outcomes were not statistically different in the two groups. The radiographic measurements were not statistically different except femoral rotation angle on navigation. The mean femoral rotation angle of navigation was 4.0° ± 2.2° without cartilage removal and 5.1° ± 2.5° with cartilage removal. The reliability and validity were high between the femoral rotation angle on navigation in the cartilage removal group and that on CT, but there were no differences in clinical outcomes between the two groups. There was little effect of navigation-assisted TKA on radiographic and clinical outcomes, although femoral rotational differences were caused by the lateral femoral posterior condylar cartilage. Although the rotational differences due to cartilage would be within the clinical safety margin, surgeons should consider that difference during TKA. Lower quality randomized trial (no masking), Level II.
- Subjects :
- Cartilage, Articular
Male
medicine.medical_specialty
Knee Joint
Rotation
Radiography
Total knee arthroplasty
Condyle
Posterior condyle
03 medical and health sciences
0302 clinical medicine
Medicine
Humans
Orthopedics and Sports Medicine
Femur
Prospective Studies
Femoral component
Arthroplasty, Replacement, Knee
Aged
Orthodontics
030222 orthopedics
business.industry
Cartilage
Reproducibility of Results
030229 sport sciences
Patella
medicine.anatomical_structure
Surgery, Computer-Assisted
Orthopedic surgery
Surgery
Female
business
Tomography, X-Ray Computed
Subjects
Details
- ISSN :
- 14337347
- Volume :
- 25
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
- Accession number :
- edsair.doi.dedup.....8d3b7fb5b40ec617c7d3b188445a8bf4