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Parameters affecting baseline hip function in patients with cam-derived femoroacetabular impingement syndrome: data
Sebastian Serong1, Moritz Schutzbach2, Stefan Fickert3,4
1Department of Orthopaedics & Orthopaedic Surgery, Saarland University Medical Centre, Kirrberger Strasse 100, 66421, Homburg, Germany. sebastian.serong@uks.eu.
Insights
This study reveals that older age, female sex, higher BMI, and prior hip surgery significantly decrease patient-reported outcomes in cam-derived femoroacetabular impingement syndrome (FAI). These factors help identify symptom-defining baseline characteristics for FAI.
Area of Science:
- Orthopedics
- Sports Medicine
- Regenerative Medicine
Background:
- The German Cartilage Registry (KnorpelRegister DGOU) database was utilized to analyze patient and joint-related baseline data.
- A cohort of 362 patients with cam-derived femoroacetabular impingement syndrome (FAI) was included in the study.
Purpose of the Study:
- To present comprehensive baseline data for a large cohort of patients diagnosed with cam-derived FAI.
- To identify patient- and joint-related factors that significantly influence preoperative symptom severity.
Main Methods:
- Patient-reported outcome measure-International Hip Outcome Tool (iHOT-33) was used for preoperative assessment.
- Descriptive statistics, univariate, and multiple regression analyses were employed to identify determining factors.
- Cam morphology was the primary inclusion criterion for FAI diagnosis.
Main Results:
- The mean age of the study cohort was 36.71 ± 10.89 years, with 68% being male.
- The mean preoperative iHOT-33 score was 46.31 ± 20.33, with the 'sports and recreational activities' subsection showing the greatest decline.
- Age > 40 years, female sex, BMI ≥ 25 kg/m², and previous surgery on the affected hip were significantly associated with lower iHOT-33 scores.
Conclusions:
- Cam-derived FAI syndrome significantly reduces baseline iHOT-33 scores, with mean total scores more than halved.
- Older age, female sex, higher BMI, and prior hip surgery are key factors associated with diminished preoperative outcomes.
- These findings aid in characterizing baseline features that define symptom severity in cam-derived FAI.
Background:
Using the database of the German Cartilage Registry (KnorpelRegister DGOU), this study aims to present patient- and joint-related baseline data in a large cohort of patients with cam-derived femoroacetabular impingement syndrome (FAI) and to detect symptom-determining factors.
Materials And Methods:
Requiring cam morphology as the primary pathology, 362 patients were found to be eligible for inclusion in the study. The assessment of preoperative baseline data was performed using the patient-reported outcome measure-International Hip Outcome Tool (iHOT-33). Descriptive statistics were performed to present baseline data. Univariate and multiple regression with post hoc testing were used to identify patient- and joint-related factors that might affect the preoperative iHOT-33 and its subscores, respectively.
Results:
The study collective's mean age was 36.71 ± 10.89 years, with 246 (68%) of them being male. The preoperative mean iHOT-33 total was 46.31 ± 20.33 with the subsection "sports and recreational activities" presenting the strongest decline (26.49 ± 20.68). The parameters "age," "sex," "body mass index" (BMI), and the confirmation of "previous surgery on the affected hip" were identified to statistically affect the preoperative iHOT-33. In fact, a significantly lower mean baseline score was found in patients aged > 40 years (p < 0.001), female sex (p < 0.001), BMI ≥ 25 kg/m2 (p = 0.002) and in patients with previous surgery on the affected hip (p = 0.022). In contrast, the parameters defect grade and size, labral tears, and symptom duration delivered no significant results.
Conclusions:
A distinct reduction in the baseline iHOT-33, with mean total scores being more than halved, was revealed. The parameters "age > 40 years," "female sex," "BMI ≥ 25," and confirmation of "previous surgery on the affected hip" were detected as significantly associated with decreased preoperative iHOT-33 scores. These results help to identify symptom-defining baseline characteristics of cam-derived FAI syndrome.
Trial Registration:
The German Cartilage Registry is conducted in accordance with the Declaration of Helsinki and registered at germanctr.de (DRKS00005617). Registered 3 January 2014-retrospectively registered. The registration of data was approved by the local ethics committees of every participating institution. Primary approval was given by the ethics committee at the University of Freiburg (No. 105/13). https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00005617.
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