Clinical Report: Muscle recovery following knee arthroplasty
Overview
This study evaluates quadriceps and hamstring strength and flexibility in patients undergoing total knee arthroplasty (TKA). Strength deficits persist compared to healthy controls over 12 months.
Background
Total knee arthroplasty is a common surgical intervention for severe knee osteoarthritis, aimed at improving function and reducing pain. Postoperative rehabilitation is critical for recovery, yet many patients experience persistent muscle strength deficits.
Data Highlights
| Time Point | Quadriceps Strength (lbs) | Hamstring Strength (lbs) |
|---|---|---|
| Preoperative | 12 | 20 |
| 6 Weeks | 7 | 13 |
| 3 Months | 30 | 30 |
| 6 Months | 38 | 42 |
| 12 Months | 43 | 58 |
Key Findings
- Quadriceps strength decreased from 12 lbs preoperatively to 7 lbs at 6 weeks.
- Hamstring strength decreased from 20 lbs preoperatively to 13 lbs at 6 weeks.
- At 12 months, quadriceps strength was 43 lbs and hamstring strength was 58 lbs, both lower than control values.
- Longitudinal changes were assessed using repeated-measures analysis of variance.
- Attrition at 12 months may limit the generalizability of the findings.
Clinical Implications
The findings indicate that patients experience recovery in muscle strength post-TKA, but significant deficits remain compared to healthy individuals.
Conclusion
The study emphasizes the importance of ongoing evaluation of muscle recovery following TKA.
Related Resources & Content
- Saidan Shetty et al., Journal of Orthopaedics, 2023 -- Muscle recovery following knee arthroplasty
- Frontiers in Medicine — Comparative efficacy of early exercise interventions for recovery outcomes after total knee arthroplasty: a systematic review and network meta-analysis
- Knee Surgery, Sports Traumatology, Arthroscopy — Integrating factors such as age, gender, body mass index, athletic level, and pre-surgery quadriceps strength enhances the prediction of quadriceps strength recovery following anterior cruciate ligament reconstruction
- Timely ACL Reconstruction Enhances Recovery of Isokinetic Thigh Muscle Strength Compared to Delayed or Chronic Interventions
- Archives of Orthopaedic and Trauma Surgery — Effect of medial parapatellar versus modified V-Y quadricepsplasty approach on knee function and quadriceps strength in revision knee arthroplasty
- Physical Therapist Management of Total Knee Arthroplasty: Revision 2026 (CPG+)
- High-Intensity Resistance Training Enhances Strength, But Not Muscle Mass and Physical Functioning Gains during Total Knee Arthroplasty Rehabilitation - PMC
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