| Abstrakt: |
Introduction: Osteoarthritis (OA) of the knee is a chronic, progressive, and highly prevalent disease. When the disease reaches its final stage, with clinical symptoms refractory to treatment or disabling deformity, surgical treatment becomes the option via total knee arthroplasty (TKA). The distal femur has a fundamental role in the success of TKA, being directly involved in joint stability, range of motion, and normal gait. Objective: Evaluate the possible sex differences in the shape of the distal femur and the age group influence on morphometry. Methods: Five measurements on 124 knees were evaluated using magnetic resonance imaging, 62 male and 62 female. The age ranged between 40 and 80 years, and the patients were divided into two age groups. Three factors were analyzed, allowing the bone classification regarding its width, shape, and symmetry. Results: The male group showed absolute measurements greater than the female, but there were no sex differences in the shape of the knee. Younger patients had more trapezoidal knees and a higher rate of asymmetry between condyles. After analyzing the factors, regarding their width, 31 knees were considered standard, 47 narrow, and 46 wide. As for the shape of the knee, 12 were considered standard, 58 rectangular, and 54 trapezoidal. About the condyles symmetry, 23 were classified as symmetrical and 101 asymmetrical. There was a great interpersonal variation in the shape of the knee, regardless of the sex. Conclusion: The shape of the distal femur presents great interpersonal variation, going beyond the simple division between wide or narrow. This variation is influenced by the patients' age, but not the sex. Level of evidence: 4. [ABSTRACT FROM AUTHOR] |
