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  • Title: Inferior calcar buttress reduction pattern for displaced femoral neck fractures in young adults: a preliminary report and an effective alternative.
    Author: Xiong WF, Chang SM, Zhang YQ, Hu SJ, Du SC.
    Journal: J Orthop Surg Res; 2019 Feb 28; 14(1):70. PubMed ID: 30819226.
    Abstract:
    BACKGROUND: Fracture reduction quality is of paramount importance for osteosynthesis. The aim of this study was to report the outcome of an inferior cortical buttress non-anatomic reduction pattern and internal fixation for displaced femoral neck fractures (Garden types III and IV) in young adults. METHODS: A retrospective analysis of 46 displaced femoral neck fractures was performed, which were treated by closed reduction and internal fixation with parallel cannulated screws. There were 20 males and 26 females, with an average age of 50.3 years (19-60). According to the inferior cortical reduction quality seen in recorded intraoperative fluoroscopy, the patients were divided into two groups. Group I (n = 30) was anatomic cortical apposition as the two inferior cortices were smoothly contacted, and group II (n = 16) was buttress cortical apposition as the two inferior cortices were located in positive support contact (Gotfried reduction pattern). With a mean follow-up of 22.0 months, femoral neck length, neck-shaft angle, and clinical outcomes were compared. RESULTS: Thirty-nine patients (84.8%) achieved uneventful fracture union. Complications occurred in seven patients, six in group I (20%) and one in group II (6.3%), including displacement to varus, neck shortening, early fixation failure, nonunion, and avascular necrosis of the femoral head. No significant difference existed in the complication rate between the two groups (p = 0.216). Four patients (13.3%) in group I were converted to prosthetic replacement, but none in group II. CONCLUSIONS: For closed reduction and fixation of displaced femoral neck fractures in young adults, an inferior cortical buttress reduction pattern, though non-anatomic, can produce sustainable fracture stability and predictable clinical outcomes.
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