Gender difference exists in sagittal curvature of the distal femoral condyle morphology for osteoarthritic population

Knee Surg Sports Traumatol Arthrosc. 2020 Dec;28(12):3740-3746. doi: 10.1007/s00167-019-05769-9. Epub 2019 Nov 2.

Abstract

Purpose: The aim of this study was to investigate gender-related differences in the sagittal curvature of the distal femoral condyle in the Korean osteoarthritic population METHODS: The sagittal curvatures of the distal femoral condyle of 1979 Korean patients (1680 female and 299 male) were evaluated using magnetic resonance imaging (MRI). MRI scans were obtained before total knee arthroplasty (TKA) in consecutive patients with end-stage osteoarthritis. The sagittal curvature of the distal medial and lateral femoral condyles was characterized with respect to the anterior, distal, and posterior circles. The diameter of each circle was measured. This study included 1873 varus and 106 valgus knees.

Results: The anterior, distal, and posterior diameters were significantly greater in the male patients than in the female patients (P < 0.05). In the male patients, the lateral diameter was significantly greater than the medial diameter in the anterior and posterior circles (P < 0.05). However, in the female patients, the lateral diameter was significantly greater only in the anterior circle. In both genders, the medial diameter was significantly greater than the lateral diameter of the distal circle (P < 0.05). For both the varus and valgus knees, the lateral diameter was greater than the medial diameter in the anterior circle.

Conclusions: It has been concluded that the sagittal curvature of the femoral condyles in females is significantly different to their male counterparts. This study provides a reliable evaluation of the sagittal curvature of the femoral condyle in the Korean population. These gender-related differences in the sagittal curvature of the femoral condyle may require further investigation to determine surgical implications such as in TKA, and the existence of gender-related dimorphism in specific knee injuries and pathologies, such as ligament injuries and tibiofemoral problems.

Level of evidence: III.

Keywords: Femur condyle; Korean patients; Morphometry; Sagittal curvature; Total knee arthroplasty.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Knee / methods
  • Epiphyses / surgery
  • Female
  • Femur / diagnostic imaging
  • Femur / pathology*
  • Femur / surgery
  • Humans
  • Knee Joint / surgery
  • Magnetic Resonance Imaging / methods
  • Male
  • Middle Aged
  • Osteoarthritis, Knee / diagnostic imaging
  • Osteoarthritis, Knee / pathology*
  • Osteoarthritis, Knee / surgery
  • Sex Characteristics
  • Sex Factors