Tale of quadriceps and hamstring muscle strength after ACL reconstruction: a systematic review with longitudinal and multivariate meta-analysis Article Swipe
YOU?
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· 2024
· Open Access
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· DOI: https://doi.org/10.1136/bjsports-2023-107977
Objective This study aimed to investigate how knee extensor and flexor strength change over time after anterior cruciate ligament reconstruction (ACLR). Design Systematic review with longitudinal meta-analysis. Data sources Medline, Embase, CINAHL, Scopus, Cochrane CENTRAL and SPORTDiscus to 28 February 2023. Eligibility criteria Studies of primary ACLR (n≥50), with mean participant age 18–40 years, reporting a quantitative measure of knee extensor or flexor strength were eligible. Muscle strength had to be reported for the ACL limb and compared with: (1) the contralateral limb (within-person); and/or (2) an uninjured control limb (between-person). Results We included 232 studies of 34 220 participants. Knee extensor and flexor strength showed sharp initial improvement postoperatively before tailing off at approximately 12–18 months post surgery with minimal change thereafter. Knee extensor strength was reduced by more than 10% compared with the contralateral limb and approximately 20% compared with uninjured controls at 1 year for slow concentric, fast concentric and isometric contractions. Knee flexor strength showed smaller deficits but was still 5%–7% lower than the contralateral limb at 1 year for slow concentric, fast concentric and isometric contractions. Between-person comparisons showed larger deficits than within-person comparisons. Conclusion Knee extensor muscle strength is meaningfully reduced (>10%) at 1 year, with limited improvement after this time up to and beyond 5 years post surgery. Many people likely experience persistent and potentially long-term strength deficits after ACLR. Comparison within person (to the contralateral limb) likely underestimates strength deficits in contrast to uninjured controls.
Related Topics
- Type
- review
- Language
- en
- Landing Page
- https://doi.org/10.1136/bjsports-2023-107977
- OA Status
- hybrid
- Cited By
- 14
- References
- 84
- Related Works
- 10
- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W4403295915Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1136/bjsports-2023-107977Digital Object Identifier
- Title
-
Tale of quadriceps and hamstring muscle strength after ACL reconstruction: a systematic review with longitudinal and multivariate meta-analysisWork title
- Type
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reviewOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-10-10Full publication date if available
- Authors
-
M. Girdwood, Adam G Culvenor, Ebonie Rio, Brooke Patterson, M. Haberfield, J. Couch, Benjamin F. Mentiplay, Michael Hedger, Kay M. CrossleyList of authors in order
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https://doi.org/10.1136/bjsports-2023-107977Publisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1136/bjsports-2023-107977Direct OA link when available
- Concepts
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Hamstring, Medicine, Anterior cruciate ligament, Anterior cruciate ligament reconstruction, Meta-analysis, Physical medicine and rehabilitation, Muscle strength, Hamstring muscles, Orthodontics, Anatomy, Internal medicineTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
14Total citation count in OpenAlex
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2025: 12, 2024: 2Per-year citation counts (last 5 years)
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84Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| cited_by_percentile_year.min | 94 |
| countries_distinct_count | 2 |
| institutions_distinct_count | 9 |
| citation_normalized_percentile.value | 0.98843215 |
| citation_normalized_percentile.is_in_top_1_percent | True |
| citation_normalized_percentile.is_in_top_10_percent | True |