Arthroscopy: The Journal of Arthroscopic & Related Surgery
Original ArticleResponse to Diagnostic Injection in Patients With Femoroacetabular Impingement, Labral Tears, Chondral Lesions, and Extra-Articular Pathology
Section snippets
Methods
Consecutive patients who underwent hip arthroscopy by a single orthopaedic surgeon specializing in hip arthroscopy for hip pain were retrospectively reviewed. All subjects underwent a presurgical evaluation that included clinical examination measures as described by Martin et al.15 and pertinent diagnostic imaging. Key components of the clinical examination included strength and range-of-motion measures of the hip, observation of gait and single-leg stance, and FAI tests. Impingement tests
Results
The results of analysis 1 indicate no significant main effect for FAI on percent relief from injection: F3,67 = 1.96, P = .128, and partial η2 = .081 (Table 2). Extra-articular pathology did not influence the reported percent relief: F1,67 = 0.688, P = .410, and partial η2 = .01. Similarly, the results of analysis 2 indicate no significant main effect for labral pathology: F2,68 = 0.008, P = .992, and partial η2 = .000 (Table 3). Again, the presence of extra-articular pathology did not
Discussion
This study is the first to quantify the response to an intra-articular anesthetic injection among patients classified by progressive stages of FAI and labral and chondral pathologies. Our primary purpose was to compare the response to anesthetic injection among patients with different sources and stages of intra-articular hip disease. The results supported our hypothesis that subjects with noted chondral damage would have greater relief from injection than those without chondral involvement.
Conclusions
Subjects with noted chondral damage had greater relief from injection than those without, regardless of severity. The presence and severity of FAI and labral pathology did not influence the variance of the percent relief from injection. Concurrent extra-articular pathology did not alter the interpretation of the percent relief from injection. Therefore the interpretation and diagnostic value of an anesthetic injection in those with primary intra-articular pathology do not need to be altered by
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Ultrasound and Ultrasound-Guided Hip Injection Have High Accuracy in the Diagnosis of Femoroacetabular Impingement With Atypical Symptoms
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The authors report no conflict of interest.