Key result
Six months of rehabilitation following surgical hip dislocation for FAIS restored most hip muscle strength, but external rotators remained significantly weaker than preoperative levels (-13%, P=0.021).
Why the study?
The study was conducted to evaluate bilateral changes in hip muscle strength following a 6-month rehabilitation period in patients undergoing surgical hip dislocation for femoroacetabular impingement syndrome.
Does a 6-month rehabilitation program restore hip muscle strength in patients undergoing surgical hip dislocation for femoroacetabular impingement syndrome?
Cohort (n=22)
No
Does a 6-month rehabilitation program restore hip muscle strength in patients undergoing surgical hip dislocation for femoroacetabular impingement syndrome?
Mean Difference: -13
p-value: p=0.021
A 6-month rehabilitation program following surgical hip dislocation for femoroacetabular impingement restores preoperative strength in most hip muscles, but external rotators remain significantly weaker.
Bilateral strength changes after SHD remain uncertain; leaves open whether current rehab protocols require modification in FAIS.
The aim of this study was to evaluate the bilateral changes in hip muscle strength after a 6-month rehabilitation period for patients undergoing surgical hip dislocation (SHD) to treat femoroacetabular impingement syndrome (FAIS). We conducted a retrospective analysis on a cohort of 22 patients (mean ± SD age: 26 ± 7, 68% male) who underwent SHD for FAIS between March 2020 and January 2023 at La Tour Hospital. Bilateral isometric strength of eight hip muscle groups (abductors, adductors, hamstrings, quadriceps, extensors, flexors, internal, and external rotators) was assessed using a handheld dynamometer before surgery, and at 3 and 6 months postoperatively. After 6 months of rehabilitation, only the external rotators were weaker compared to preoperative levels (−13% ± 23%, P = .021). Strength levels were similar to preoperative levelsfor adductors (−2% ± 21%, P = .309), internal rotators (0% ± 25%, P = .444), quadriceps (0%± 23%, P = .501), hamstrings (7%± 20%, P = .232), extensors (7%± 19%, P = .336), flexors (8%± 34%, P = .781), and abductors (8% ± 25%, P = .266). At 6 months, 59% (abductors) to 82% (adductors) of patients did not achieve a clinically relevant strength improvement (>15%) compared to their preoperative status for aforementioned muscles. Additionally, 50% of the cohort experienced a clinically relevant loss of strength in the external rotators at 6 months post-surgery. To conclude, after SHD, most FAIS patients regained their preoperative strength for all muscle groups except the external rotators with a 6-month rehabilitation program. However, the effectiveness of the rehabilitation protocol varies on an individual level.
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Servant et al. (2024) conducted a cohort in Femoroacetabular impingement syndrome (FAIS) (n=22). 6-month rehabilitation following surgical hip dislocation vs. Preoperative levels was evaluated on Change in external rotator strength compared to preoperative levels (-13%, p=0.021). Six months of rehabilitation following surgical hip dislocation for FAIS restored most hip muscle strength, but external rotators remained significantly weaker than preoperative levels (-13%, P=0.021).
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