Abstract

To quantify the effect of the learning curve in performing hip arthroscopy for femoroacetabular impingement (FAI) and labral tears on total operating room time, including times for setup, surgery, and wake up, during a single surgeon's initial hip arthroscopy procedures. A single surgeon's case list was retrospectively reviewed to identify all primary hip arthroscopy surgeries between November 1, 2018, and February 28, 2018, for the treatment of FAI and labral tears. Surgical times were recorded, including total room time; surgical time; setup time; and wake-up time. Linear regression was used to evaluate the relationship of these times relative to case number in the series. In addition, the series was divided into 3 sequential groups to further compare these times. In total, 225 patients were included in the study. The mean total room time for all cases was 155.4 minutes, 95% confidence interval ([CI] 150.9-160.0); mean surgical time was 115.6 minutes (95% CI 111.5-119.8), and mean setup time was 32.6 minutes (95% CI 31.8-33.4). Decreasing surgical time was associated with advancing number in the case series (P < .001, R2= 0.36). Decreasing total room time was accordingly associated with advancing number in the case series (P < .001, R2= 0.34). There were no significant differences in setup time and wake-up time as the case series advanced. When groups of 75 sequential cases were compared, significant decreases in surgical and total room time were noted between the first and second groups (P < .001) but not between the second and third groups (P= .52). Increasing complexity of surgeries was noted as the series advanced, including capsular closure and subspine decompression. This study supports the existence of a substantial learning curve for hip arthroscopy in the treatment of FAI and labral tears. Our findings suggest decreasing surgical time as the surgeon advances through the learning curve, with the initial 75 procedures requiring longer time to perform than subsequent cases. Hip arthroscopy is a technically demanding procedure. Understanding the long duration of the hip arthroscopy learning curve is helpful for surgeons considering the addition of hip arthroscopy to their practice.

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