Objective:
To compare visual feedback–based rehabilitation plus conventional physiotherapy with conventional physiotherapy alone for gait and clinical outcomes after unilateral total hip arthroplasty (THA).
Approach:
- Design and participants: Randomized study of 90 patients aged 55–80 years after THA via a direct lateral approach.
- Interventions: For 6 weeks, 5 days per week, the visual feedback group received 30 minutes of technology-assisted training plus 30 minutes of conventional therapy; controls received 60 minutes of conventional therapy.
- Assessments: Blinded assessors measured gait and pelvic kinematics with a G-WALK sensor at baseline and 6 weeks. Pain, functional independence, and ambulation capacity were also assessed.
Key Findings:
- At 6 weeks, gait speed was 0.83 m/s with visual feedback and 0.74 m/s with conventional therapy; the between-group difference was 0.09 m/s.
- Cadence, gait symmetry, and pelvic movement measures improved more in the visual feedback group.
- Both groups improved in pain, Barthel Index, and Functional Ambulation Category, with no statistically significant between-group differences in these clinical outcomes.
- Exploratory analyses identified different recovery profiles, with visual feedback participants more often represented in a higher-functioning cluster.
Interpretation:
The authors interpreted the gait and pelvic measurements as indicating better gait coordination with visual feedback rehabilitation. The 0.09-m/s gait-speed difference was below the commonly reported THA minimal clinically important difference of 0.10–0.14 m/s.
Limitations:
- The modest sample came from one Italian inpatient rehabilitation center, and all participants had a direct lateral surgical approach.
- Outcomes were measured only at 6 weeks, so longer-term durability is unknown.
- Exploratory multivariate and clustering analyses were post hoc and lacked prespecified power calculations; secondary gait comparisons were not adjusted for multiple testing.
- Reported between-group differences did not meet the stricter statistical threshold specified in the study tables.
Conclusion:
The authors called for medium- to long-term follow-up to determine whether early gait advantages persist over 6–12 months. They reported no conflicts of interest.
Sources:
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