Relationships of Singh index to the geometric structure of the proximal femur and the biomechanics of the load-bearing area in elderly patients with hip fracture(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2022年第4期
- Page:
- 513-517
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Relationships of Singh index to the geometric structure of the proximal femur and the biomechanics of the load-bearing area in elderly patients with hip fracture
- Author(s):
- XU Xiao1; 2; YAN Kaixin1; 3; ZHANG Haoshaqiang2; WANG Zhigang2; LI Kun2
- 1. Graduate School of Xinjiang Medical University, Urumqi 830000, China 2. Department of Joint and Sports Medicine, Orthopedics Center, Xinjiang Uygur Municipal Peoples Hospital, Urumqi 830000, China 3. Geriatrics Center, Xinjiang Uygur Municipal Peoples Hospital, Urumqi 830000, China
- Keywords:
- Keywords: hip fracture elderly Singh index femur geometric structure biomechanics
- PACS:
- R318.01；R683.3
- DOI:
- DOI:10.3969/j.issn.1005-202X.2022.04.022
- Abstract:
- Abstract: Objective To investigate the relationships of Singh index to the geometric structure of the proximal femur and the biomechanics of the load-bearing area in elderly patients with hip fracture. Methods The clinical data of 82 elderly patients with hip fracture (observation group) and 41 young adults with a history of closed hip fracture (control group) were selected for retrospective analysis. The grading by Singh index, the geometric structure indexes of the proximal femur (femoral neck axial length, neck-shaft angle, neck length, medial offset) and the biomechanical indexes of the load-bearing area (bone ultimate stress, elastic modulus) were compared. Moreover, the relationships of Singh index to the geometric structure indexes of the proximal femur and the biomechanical indexes of the load-bearing area were analyzed. Results According to grading by Singh index, the proportions of grades II and III in observation group were higher than those of control group, while the proportions of grades IV, V and VI were lower than those of control group (P<0.05). Compared with control group, observation group had lower Singh index, neck-shaft angle, bone ultimate stress and elastic modulus, but higher femoral neck axial length, medial offset and neck length (P<0.05). Hierarchical regression showed that the neck-shaft angle, bone ultimate stress and elastic modulus were positively related to Singh index, while the femoral neck axial length had significant negative relationships with Singh index (P<0.05). Conclusion The Singh index of elderly patients with hip fracture is closely related to the geometric structure of the proximal femur and the biomechanics of the load-bearing area. The decrease of Singh index will significantly affect the geometric structure of the proximal femur and the biomechanics of the load-bearing area.
Last Update: 2022-04-27