Diagnostic injection offers relief from chondral damage in patients with FAI
Kivlan BR. Arthroscopy. 2011. doi:10.1016/j.arthro.2010.12.009.
Patients with chondral damage had greater relief from injection than patients without chondral damage regardless of severity, according to investigators from Pittsburgh.
Benjamin R. Kivlan, PT, and fellow investigators at John G. Rangos Sr. School of Health Sciences at Duquesne University retrospectively reviewed 72 hip arthroscopy cases. They performed three analyses of covariance compared with percent relief after injection between groups that were based on surgically confirmed types of impingement, labral pathology and chondral pathology. According to the study abstract, Kivlan’s group controlled for the presence of extra-articular pathology through iliotibial band, iliopsoas tendinopathy or bursitis.
The first two analyses, the study reported, found no significant main effect for femoroacetabular impingement and labral pathology on the percent relief from injection. The third analysis, however, noted a significant main effect for chondral pathology of the hip on percent relief from injection.
“Post hoc analysis showed that those with mild chondral pathology of the acetabulum and those with acetabular delamination had significantly greater percent relief compared with those without chondral pathology,” the authors wrote. “Extra-articular pathology did not influence the percent relief from injection in any of the analyses.”
“The interpretation and diagnostic value of an anesthetic injection in those with primary intra-articular pathology does not need to be altered by the presence of coexisting extra-articular hip pathology,” they added.