Functional Outcomes of Superior Gluteal Nerve Injury After Nailing of Proximal Femoral Fractures

Document Type : Original research articles

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Department of Orthopaedic Surgery, Faculty of Medicine, South Valley University, Qena, Egypt.

Abstract

Background: Painful limbing after proximal femoral nailing is commonly noticed due to weakness of hip abductors. It may result from mechanical failure of the abductor muscle, malunion with coxa vara or valga, or injury of superior gluteal nerve (SGN).
Objectives: To estimate incidence of SGN injury after hip proximal femoral nailing and investigate its correlation with hip functional outcomes.                     
Patients and methods: This retrospective study was conducted on 20 patients presented to Qena university hospital during the time from (July 2018) to (July 2019) with abductor lurch after proximal femoral nailing for more than 3 months.
Results: No statistically significant correlation between operated and non-operated sides in terms of functional score and neck shaft angle. There was a statistically significant correlation between muscle power, neck shaft angle and Harris Hip Score (HHS) with evidence of patients with MRC scale less than V and patients with abnormally high or low neck-shaft angle had significantly lower functional scores. Two patients had SGN injury with significantly lower functional scores with SGN injury compared to patients with normal EMG.
Conclusion: SGN injury is a rare complication after nailing of proximal femoral fractures associated with poor functional outcomes.

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