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Intraoperative Traction has a Negligible Time-Dependent Influence on Patient Reported Outcomes after Hip Arthroscopy: A Cohort Study

Intraoperative Traction has a Negligible Time-Dependent Influence on Patient Reported Outcomes after Hip Arthroscopy: A Cohort Study

Jacob Feingold, BS, UNITED STATES Ryan R. Thacher, MD, UNITED STATES Adit Maniar, MBBS, MS Orthopaedics, DNB Orthopaedics, CANADA Stefan Mitrasinovic, MBBS, UNITED STATES Anil S. Ranawat, MD, UNITED STATES

Hospital for Special Surgery, New York, New York, UNITED STATES

2023 Congress   ePoster Presentation   2023 Congress   Not yet rated


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Summary: Traction time during hip arthroscopy does influence patient reported outcomes.


To determine if postoperative patient-reported outcome measures (PROMs) are influenced by hip arthroscopy traction duration.


A total of 3,528 patients from a local prospective hip arthroscopy database were retrospectively analyzed. Four hip specific PROMs were utilized: modified Harris Hip Score (mHHS), Hip-Outcome Score – Activities of Daily Living (HOS-ADL), Hip Outcome Score – Sports Specific (HOS-SS), and the international Hip Outcome Tool (iHOT). PROMs were collected preoperatively and six months, one year, and two years postoperatively. Two cohorts were created based on a cut-off of intraoperative traction time of 50 minutes, which corresponds to a 66th percentile for our patient cohort. Analyses were completed for each PROM at each post-operative interval with univariable statistics. Multivariable statistics was examined for all patients to identify variables that were predictive of achieving post-operative minimal clinically important difference (MCID) at 2 year follow-up.


Overall, 222 patients met the inclusion criteria. Mean age was 32.4 ± 9.4 years and 116 (52.3%) were female. The average traction time of the study population was 46.1 ± 12.9 minutes. 145 patients were included in the short traction cohort (65%) with traction times below the 66th percentile (<50 minutes), 77 patients were included in the long traction cohort (35%). No significant differences were found regarding PROM scores or MCID achievement rate between both cohorts at any post-operative period. In multivariable analyses, achievement of MCID was predicted by a decrease in traction time for all PROMs and pincer-type resection for mHSS, HOS-ADL and iHOT.


There was no difference in PROMs and MCID achievement between longer and shorter traction time cohorts. On multivariable analysis, a decrease in traction time is predictive of MCID for all PROM scores and pincer type resection was predictive of MCID for most PROM scores

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