Abstract
BackgroundOpen hip surgery is known to be a risk for heterotopic ossification (HO), and nonsteroidal anti-inflammatory drugs (NSAIDs) have been widely recognized as an effective prevention. Hip arthroscopy is gaining popularity thanks to the possibility of treating femoroacetabular impingement (FAI) with a minimally invasive technique, however little is known about its rate of postoperative HO. The aim of the present study is to evaluate HO prevalence after hip arthroscopy for FAI and its relationship with NSAID prophylaxis.Materials and methodsWe retrospectively reviewed 300 FAI cases who have been managed with hip arthroscopy in two different hospitals from April 2006 to May 2009. All medical records and indications at discharge were analyzed, focusing on administration of NSAIDs, as well as follow-up roentgenograms with regard to presence of HO around the hip joint. The patients were divided into two groups: a treatment group of 285 hips which received NSAID prophylaxis and a control group of 15 hips which did not.ResultsFive hips presented HO, with overall prevalence of 1.6%. All five patients with HO belonged to the control group. No HO was observed in the treatment group. Thus, HO rate turned out to be significantly higher (P < 0.001) in patients who did not receive NSAIDs after surgery.ConclusionArthroscopic treatment of FAI is not exempt from potential development of HO. NSAIDs after arthroscopic FAI treatment seem to be an effective prevention.
Highlights
Heterotopic ossification (HO) or ectopic bone formation is the formation of bone in soft tissue where bone normally does not exist
Background Open hip surgery is known to be a risk for heterotopic ossification (HO), and nonsteroidal antiinflammatory drugs (NSAIDs) have been widely recognized as an effective prevention
Materials and methods We retrospectively reviewed 300 femoroacetabular impingement (FAI) cases who have been managed with hip arthroscopy in two different hospitals from April 2006 to May 2009
Summary
Heterotopic ossification (HO) or ectopic bone formation is the formation of bone in soft tissue where bone normally does not exist. Prevalence of ectopic ossification after total hip replacement (THR) varied widely between 5% [4] and 90% [5]. Much has been reported and described in literature about ectopic bone formation after open hip surgery, little is known and documented about this complication after hip arthroscopy. This procedure has recently gained popularity thanks to the possibility of managing femoroacetabular impingement (FAI) [10,11,12,13]. Open hip surgery is known to be a risk for heterotopic ossification (HO), and nonsteroidal antiinflammatory drugs (NSAIDs) have been widely recognized as an effective prevention. The patients were divided into two groups: a treatment group of 285 hips which received NSAID prophylaxis and a control group of 15 hips which did not
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