Femoral neck shortening after fracture fixation with cannulated screws

doi:10.3969/j.issn.2095-4344.2013.09.012

Abstract

Abstract:

BACKGROUND: Generally, 2 cm shortening of the femoral neck may influence the function of hip joint. But in recent years, many literatures demonstrate that 5 mm shortening of the femoral neck may impact the function and the life quality, and there are a lot of controversies.
OBJECTIVE: To investigate the incidence, functional impact and related factors of femoral neck shortening after the treatment of femoral neck fractures with closed reduction and cannulated screw fixation.
METHODS: Ninety-four patients with femoral neck fractures admitted during May 2003 to January 2011, who were treated with closed reduction and cannulated screws fixation, were selected for the retrospective analysis. The patients with fracture nonunion and femoral head necrosis were excluded and finally 86 patients were included for the analysis. Femoral neck fractures were fixed with three cannulated screws after satisfactory closed reduction. The shortening length ≥ 5 mm, ≥ 10 mm and ≥ 20 mm were considered as three reference points to investigate the incidence of shortening (by comparing bilateral femoral neck centerline), as well as the effect of several factors on femoral neck shortening.
RESULTS AND CONCLUSION: The median of femoral neck shortening in 86 patients was 2.6 mm and averaged in (5.21±5.49) mm, including 36% (31/86) for shortening ≥ 5 mm, 19% (16/86) for shortening ≥ 10 mm and 3% (3/86) for shortening ≥ 20 mm. There was significant difference in Harris scores among three shortening groups, indicating that shortening ≥ 5 mm could influence the function of hip joint. Gender, age, singh index, Garden index and body mass index were the factors that affected the femoral neck shortening after fixation of femoral neck fractures. The results suggested that the incidence of femoral neck shortening is higher after closed reduction and cannulated screw fixation for femoral neck fractures, and the femoral neck shortening ≥ 5 mm could impact the function of hip joint.

Key words: bone and joint implants, orthopedic implants, femoral neck fracture, femoral neck shortening, cannulated screw, internal fixation, function of hip joint, influencing factor, gender, age, body mass index, investigation and analysis, provincial grants-supported paper, photographs-containing paper of bone and joint implants

CLC Number:

R318

Liu Yue, Zheng Shi-wei, Wu Liang, Zhang Yan, Yang Tie-yi. Femoral neck shortening after fracture fixation with cannulated screws[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(9): 1598-1604.

Figures/Tables 1

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