Gender differences in femoral trochlea morphology

Area of Science:

• Orthopedic surgery
• Biomechanical engineering
• Anatomy

Background:

• Anterior femoral condyle morphology is critical for knee joint function and implant design.
• Understanding gender-specific differences in femoral morphology can optimize surgical outcomes.
• Previous studies have not fully elucidated the detailed 3D morphology of the anterior femoral condyle in relation to gender.

Purpose of the Study:

• To quantitatively analyze the 3D morphology of the anterior femoral condyle.
• To compare the morphological data between male and female subjects.
• To provide data for designing patient-specific femoral components, particularly for Asian females.

Main Methods:

• 3D reconstruction of CT scans from 90 healthy subjects.
• Measurement of lateral and medial anterior condylar heights (LACH, MACH) and widths (LTW, MTW).
• Analysis of trochlear groove tracking, sulcus angle, and depth, with comparison of absolute and normalized data between genders.

Main Results:

• Absolute condylar heights and widths were significantly smaller in females compared to males.
• Normalized condylar height showed no significant gender difference.
• Normalized trochlear width was significantly larger in females, indicating a wider groove.

Conclusions:

• Male subjects possess larger anterior femoral condyle dimensions.
• Female subjects tend to have wider and shallower trochlear grooves.
• Findings are essential for tailoring femoral implant designs for Asian female populations.