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- Title
The forgotten joint score-12 is a valid and responsive outcome tool for measuring success following hip arthroscopy for femoroacetabular impingement syndrome.
- Authors
Robinson, Patrick G.; Rankin, C. S.; Murray, I. R.; Maempel, J. F.; Gaston, P.; Hamilton, D. F.
- Abstract
Purpose: The forgotten joint score-12 (FJS-12) is an outcome questionnaire designed to evaluate joint awareness. The responsiveness and validity of the English language version of the FJS-12 in patients undergoing hip arthroscopy for femoroacetabular impingement (FAI) is not known. Methods: Consecutive patients undergoing hip arthroscopy for a diagnosis of FAI were prospectively followed up over a 1 year period. Patients completed preoperative and postoperative FJS-12, EuroQol 5 Dimension (EQ-5D-5L), and the 12-item international hip outcome tool (iHOT-12). We evaluated construct validity with Spearman correlation coefficients for the FJS-12, and responsiveness by way of effect size and ceiling effects. Results: Forty-six patients underwent hip arthroscopy, of which 42 (91%) completed post-operative PROMs at 1 year follow-up. Construct validity was strong with the iHOT-12 (r = 0.87) and also the EQ-5D-5L (r = 0.83). The median postoperative FJS score was 50.2 (IQR 64). The mean change in score for the FJS-12 was 31 points (SD 31) (p < 0.001), with an effect size (Cohen's d) of 1.16. Preoperatively, three patients scored the lowest possible value resulting in a floor effect of 7.1%. Similarly, only three patients (7.1%) scored the best possible score post-operatively. Conclusion: This is the first evaluation of the joint awareness concept in the English language version of the FJS-12 following hip arthroscopy for FAI. The FJS-12 is a valid and responsive tool for the assessment of this cohort of patients. Level of evidence: II.
- Subjects
ARTHROSCOPY; FEMORACETABULAR impingement; HIP joint diseases; PSYCHOMETRICS; ENDOSCOPY; HIP joint diseases diagnosis
- Publication
Knee Surgery, Sports Traumatology, Arthroscopy, 2021, Vol 29, Issue 5, p1378
- ISSN
0942-2056
- Publication type
Article
- DOI
10.1007/s00167-020-06138-7