Influence of gender and age on distal femur shape. Are there any relevant differences?
DOI:
https://doi.org/10.12957/bjhbs.2021.59742Keywords:
Anthropometry, Arthroplasty, Sex, Knee, Magnetic resonance.Abstract
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
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