Geometry measurement of the proximal femur in the preoperative plan of hip fractures

doi:10.3969/j.issn.2095-4344.2013.09.016

Abstract

Abstract:

BACKGROUND: Hip fracture is commonly seen, and frequently complicated with osteoporosis and deep vein thrombosis after treatment. Therefore, the careful preoperative plan is necessary.
OBJECTIVE: To measure the geometric parameters of the proximal femur in the elderly female patients and to design the preoperative plan.
METHODS: The pelvis radiographs of 204 female patients aged ≥ 50 years were collected between January 2010 and May 2012 from the Second Affiliated Hospital of Fujian Medical University. The geometric parameters, including femoral neck axis length, femoral neck width, medullary cavity width of femoral neck, femoral neck-shaft angle and canal flare index were measured with START-SOUTHERN medical software. The geometric parameters were measured in the contralateral hip for the patients with femoral neck fracture. Stratified analysis was done according to age.
RESULTS AND CONCLUSION: The measurement results of hip plain films showed the femoral neck axis length of the old female patients was (97.14±6.16) mm, the femoral neck width was (33.76±3.03) mm, the medullary cavity width of femoral neck was (28.28±3.48) mm and the femoral neck-shaft angle was (127.05±3.43)°. The canal flare index was 3.50±0.55. Stratified analysis showed that, with aging, the canal flare index was reduced, and the canal flare index in the patients with femoral neck fracture was less than that in the non-fracture patients (P < 0.01). The measurement of the geometric parameters of the proximal femur was helpful to draw up the preoperative plan for patients with hip fracture and select the best placement of internal fixation. The canal flare index was beneficial for selecting the suitable prosthesis.

Key words: bone and joints implants, basic experiment of bone injuries, hip fracture, proximal femur geometry, measurement, femoral neck, neck-shaft angle, medullary cavity scintillation index, pre-treatment plan, complications, osteoporosis, deep vein thrombosis, photographs-containing paper of bone and joint implants

CLC Number:

R318

Cai Si-qing, Cai Dong-lu, Yan Li-sheng, Pan Yuan-cheng, Zhuang Hua-feng, Li Yi-zhong. Geometry measurement of the proximal femur in the preoperative plan of hip fractures[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(9): 1625-1632.

Figures/Tables 6

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