Fazekas A. – September 2010
Although injury to the lateral femoral cutaneous nerve (LFCN) is a
complication of anterior approaches to the hip and pelvis, no study has
quantified its’ incidence in anterior arthroplasty procedures. … We
therefore defined the incidence, functional impact, and natural
history of LFCN neuropraxia after an anterior approach for both hip
resurfacing (HR) and primary total hip arthroplasty (THA).
We followed 132 patients who underwent an anterior hip approach (55 THA;
77 HR) …
One hundred seven patients (81%) reported LFCN neuropraxia with a mean
severity score of 2.32/10 and a mean DN4 score of 2.42/10. Hip resurfacing
had a higher incidence of neuropraxia as compared with THA: 91% versus 67%,
respectively. No functional limitations were reported on SF-12, WOMAC, or
UCLA scores. Of the subset of 60 patients followed over an average of 12
months, 53 (88%) reported neuropraxia at the first follow-up interval with
only three (6%) having complete resolution at second follow-up. Improvement
in DN4 scores was observed over time: 3.6 versus 2.5, respectively.
Although LFCN neuropraxia was a frequent complication after anterior
approach THA, it did not lead to functional limitations in our patients. A
decrease in symptoms occurred over time but only a small number of patients
reported complete resolution.