Arthroscopy: The Journal of Arthroscopic & Related Surgery
Original ArticleLabral Injury: Radiographic Predictors at the Time of Hip Arthroscopy
Section snippets
Methods
A retrospective cross-sectional study was performed in patients treated with arthroscopic labral repair or debridement from February 2008 to August 2011. Inclusion criteria were patients undergoing arthroscopic labral treatment who had radiographic measurements entered into our database. At the time of this study, patients who completed 2-year follow-up triggered radiographic review and input into our database. This does not represent a consecutive series of patients. Exclusion criteria were
Radiographs
The study included 392 patients with hip radiographs. There were 160 male patients (mean age, 40.2 years; range, 15.7 to 74.9 years) and 232 female patients (mean age, 36.0 years; range, 14.2 to 76.4 years). Patient demographic data are detailed in Table 1. The mean labral tear size was 2.9 ± 1.2 clock sectors (Fig 2).
Multiple Linear Regression
Statistical data for each category are detailed in Table 2. Regression analysis displayed statistical significance for sex (P < .0001), age (P < .0001), and alpha angle (P = .005)
Discussion
In this study we were able to identify several preoperative variables that correlated with labral tear size: male sex, age, and alpha angle. Labral tears were larger in female individuals with higher Tönnis grades and lower neck-shaft angles. In addition to a thorough clinical examination of young patients with hip disease, radiographic analysis is key to understanding the mechanism of impingement or dysplasia. Most labral tears occur in the setting of radiographic abnormalities, and failure to
Conclusions
Preoperative risk factors for the extent of labral tear size are male sex, age, and alpha angle. Labral tears were larger in female individuals with higher Tönnis grades and lower neck-shaft angles. Measurements of acetabular coverage and version showed no correlation with labral tear size. Most labral tear size variation was not accounted for in this model.
Acknowledgement
The authors thank Luke Cramer, M.D., Youssef El Bitar, M.D., Timothy Jackson, M.D., Dror Lindner, M.D., and Jeffrey Gornbein, Ph.D, for their assistance with radiographic measurements and statistics.
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Cited by (0)
The authors report the following potential conflict of interest or source of funding: B.G.D. receives support from Arthrex, Pacira, Mako Surgical, American Hip Institute, Breg, MedWest, Athletic and Therapeutic Institute, Orthomerica, DJO Global, and Stryker.