Predictors of Clinical Outcomes After Hip Arthroscopy: A Prospective Analysis of 1038 Patients With 2-Year Follow-up
Authors: Benjamin G. Domb, Timothy J. Martin, Chengcheng Gui, Sivashankar Chandrasekaran, Carlos Suarez-Ahedo, Parth Lodhia
Background
As hip arthroscopy becomes more widely performed, understanding which factors predict positive or negative outcomes is essential for optimizing patient selection and setting expectations.
Purpose
To evaluate clinical outcomes after hip arthroscopy and identify preoperative and intraoperative variables that predict postoperative improvements.
Methods
A prospective study of 1,038 patients who underwent hip arthroscopy between 2008 and 2012, all with a minimum 2-year follow-up. Patient-reported outcomes (PROs) were assessed using the NAHS (primary outcome), mHHS, HOS-ADL, and HOS-Sport. A total of 34 clinical and surgical variables were analyzed using bivariate and multivariate regression to determine predictors of 2-year outcomes.
Key Findings
Significant improvement in all PROs at 2-year follow-up (p < .001).
10 variables were identified as predictors of postoperative NAHS, including:
- Preoperative NAHS, mHHS, and HOS-ADL
- Age
- Duration of symptoms
- Body mass index (BMI)
- Revision hip arthroscopy
- Preoperative NAHS had greater predictive value in patients with higher BMI.
What This Means for Providers
Several preoperative and patient-related variables—including baseline function, age, BMI, and prior surgery—are significant predictors of outcomes after hip arthroscopy. These findings can help guide patient counseling, optimize surgical indications, and individualize prognosis, particularly in patients with higher BMI or previous hip surgery.