Tianjin Medical Journal ›› 2026, Vol. 54 ›› Issue (6): 627-631.doi: 10.11958/20260225

• Clinical Research • Previous Articles     Next Articles

The differences in bone mineral density and proximal femoral geometry between middle-aged and young adult patients with different types of hip fractures

ZHAO Likun1,2(), CUI Shuangshuang1,2, YU Jingbo1,2, SUN Xiaolei3, ZHANG Wenhai4, MA Xinlong1,2,()   

  1. 1 Tianjin Orthopedic Research Institute, Tianjin Hospital (Tianjin University Tianjin Hospital), Tianjin 300050, China
    2 Tianjin Key Laboratory of Orthopaedic Biomechanics and Medical Engineering
    3 Department of Bone Mineral Density
    4 Department of Orthopaedics, Tianjin Hospital
  • Received:2026-01-20 Revised:2026-03-12 Published:2026-06-15 Online:2026-06-15
  • Contact: E-mail:maxinlong8686@sina.com

Abstract:

Objective To compare the differences of bone mineral density (BMD) and proximal femoral geometry between the different types of hip fractures. Methods A total of 132 patients with hip fractures aged 18 to 50 years were selected and divided into the intertrochanteric fracture (ITF) group (n=55) and the femoral neck fracture (FNF) group (n=77) according to different fracture sites. Age and gender were matched in the two groups using propensity score matching (PSM). The basic patient information, BMD and proximal femoral geometry were compared between the two groups. Results There was no significant difference in patient age between the two groups of patients before PSM (P>0.05). Both groups were dominated by male patients, but the proportion of males was higher in the ITF group (P<0.01). Low-energy trauma was the predominant injury mechanism in both groups of patients, and the proportion of low-energy injury was higher in the FNF group (P<0.05). There were no significant differences in BMD of the cervical area, Wards triangle area, greater trochanter area and total hip area between the two groups, and no significant in incidence of overall low bone mass between the two groups (P>0.05). There were no significant differences in hip axial length (HAL), neck-shaft angle (NSA) and buckling ratio (BR) between the two groups. However, the cross-sectional area (CSA), cross-sectional moment of inertia (CSMI) and section modulus (SM) of the ITF group were greater than those of the FNF group (P<0.05). Conclusion In young and middle-aged hip fracture patients, there is no significant difference in BMD between ITF patients and FNF patients. However, the bones of ITF patients have stronger compressive and bending resistance.

Key words: hip fractures, femoral neck fractures, bone density, middle-aged and young adults, proximal femoral geometry

CLC Number: