The Effectiveness of Ultrasound-Guided Steroid Injection for Femoroacetabular Impingement: A Comparison between the Extra-Articular and Intra-Articular Approaches

Abstract

Copyrights © 2013 The Korean Society of Radiology Purpose: To assess the effectiveness of pain control using ultrasound-guided steroid injection by the extra-articular and intra-articular approaches to femoroacetabular impingement patients. Materials and Methods: From September through December 2010, 18 patients with clinical suspicion of femoroacetabular impingement syndrome underwent ultrasound-guided steroid and local anesthetics injection: a total of 20 cases, including 16 cases of ipsilateral and 2 cases of bilateral injection. Extra-articular or intraarticular approach was selected for each patient, randomly and alternately. Nine cases were performed by extra-articular approach and 11 cases were performed by intra-articular approach. Every patient was observed in the outpatient clinic and visual analogue scale (VAS) was taken and compared before and after the procedure in all patients. Results: Pre-injection average VAS value of extra-articular approached cases was 5.22 ± 1.99 and post-injection average VAS value was 4.11 ± 1.96, which is statistically insignificant (p < 0.156). The average VAS value of intra-articular approached cases was decreased from 5.72 ± 2.15 to 2.91 ± 2.30 after injection, which is statistically significant (p < 0.006). Conclusion: Ultrasound guided intra-articular approached steroid and local anesthetics injection could be effective in controlling pain for patients with femoroacetabular impingement syndrome. Index terms Femoroacetabular Impingement Syndrome Steroid Injection Ultrasound Guidance The Effectiveness of Ultrasound-Guided Steroid Injection for Femoroacetabular Impingement: A Comparison between the Extra-Articular and Intra-Articular Approaches 대퇴비구충돌증후군 환자에서의 초음파 유도하 스테로이드 주입법의 효과: 관절강외 주입법과 관절강내 주입법 비교를 중심으로