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Hagen, M, Vanrenterghem, J, Van den Borne, Y, Robinson, M, Díaz, M.A., Verschueren, S and Smeets, A Hamstrings and Quadriceps Weaknesses following Anterior Cruciate Ligament Reconstruction persist up to 6 Months after Return-to-sport: an Angle-specific Strength Analysis. International Journal of Sports Physical Therapy. ISSN 2159-2896 (Accepted)
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Hamstrings and Quadriceps Weaknesses following Anterior Cruciate Ligament Reconstruction persist up to 6 Months after Return-to-sport an Angle-specific Strength Analysis.pdf - Accepted Version Download (1MB) | Preview |
Abstract
BACKGROUND: Hamstrings and quadriceps strength recovery and restoration of the hamstrings-to-quadriceps ratio (H/Q ratio), is a major concern after anterior cruciate ligament reconstruction (ACLR). Recently, moment-angle profiles and angle-specific H/Q ratios received increasing interest. PURPOSE: 1) to identify deficits or asymmetries in moment-angle profiles and angle-specific H/Q ratio profile in ACLR athletes at the time of RTS and 2) to assess if asymmetries persist up to 6 months following RTS. STUDY DESIGN: Case-Control study METHODS: Twenty ACLR athletes performed isokinetic strength tests for concentric knee flexion and extension (60°/s) at RTS, and 3 and 6 months later. Twenty controls were tested once. RESULTS: Angle-specific analyses and peak moments showed lower hamstrings strength in the injured leg of ACLR athletes compared to their uninjured leg at RTS. Furthermore, angle-specific analyses showed a lower hamstrings strength and H/Q ratio in the injured leg compared to controls at larger knee flexion angles. The latter deficit was not identified with a peak-based analysis. The asymmetries identified at RTS did not change over the 6 months following RTS. CONCLUSIONS: Athletes with ACLR show strength deficits and asymmetries that persist even 6 months after RTS. As some asymmetries may go undetected by peak-based analyses, angle-specific analyses are recommended.
| Item Type: | Article |
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| Subjects: | R Medicine > RC Internal medicine > RC1200 Sports Medicine |
| Divisions: | Sport and Exercise Sciences |
| Publisher: | North American Sports Medicine Institute |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 20 Dec 2024 14:57 |
| Last Modified: | 20 Dec 2024 15:00 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/25152 |
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