Hip Arthroscopy in Smokers: A Systematic Review of Patient-Reported Outcomes and Complications in 18,585 Cases.

BACKGROUND

Although the negative effects of smoking have been documented for other types of arthroscopic procedures, there is limited information regarding its influence on hip arthroscopy outcomes.

PURPOSE

To examine the effect of smoking on the following outcomes after hip arthroscopy: patient-reported outcomes (PROs), the degree of improvement in PROs relative to baseline, complication rates, and rates of revision arthroscopy and/or conversion to total hip arthroplasty (THA).

STUDY DESIGN

Systematic review.

METHODS

The PubMed, Embase, and Cochrane Library databases were queried for studies published between January 1, 1985, and January 14, 2020, comparing the outcomes of hip arthroscopy between smokers and nonsmokers. Case reports, basic science studies, and studies investigating pediatric patients or lacking a description of outcomes were excluded. Included outcome tools were the modified Harris Hip Score, the visual analog scale (VAS) for pain and satisfaction, and the Hip Outcome Score (HOS)-Sports Specific and HOS-Activities of Daily Living. Preoperative characteristics and operative indications were also recorded.

RESULTS

Postoperative combined means (± SD) were better in nonsmokers versus smokers for the modified Harris Hip Score (75.67 ± 20.88 vs 82.32 ± 15.5; = .001), the VAS pain (3.13 ± 2.79 vs 2.13 ± 2.21; < .001), and the HOS-Sports Specific (62.54 ± 25.38 vs 71.7 ± 23.3; < .001). There was no difference between groups in VAS satisfaction ( = .23) or HOS-Activities of Daily Living ( = .13). The extent of PRO score improvement relative to baseline values was similar in smokers and nonsmokers in all PRO measures ( > .05 for all). Smokers demonstrated higher rates of postoperative thromboembolic ( = .0177) and infectious ( = .006) complications. There was no difference between rates of revision arthroscopy ( = .47) and THA conversion ( = .31).

CONCLUSION

Smoking adversely affects certain postoperative PROs and is associated with higher postoperative complication rates. Further studies are required investigating the degree of PRO improvement and long-term arthroscopy revision and THA conversion rates.