ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2015
Associations of isokinetic knee steadiness with hop performance in patients with ACL deficiency.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.
- Changes in Quadriceps Force Control and Torque Quality Following Anterior Cruciate Ligament Injury and Reconstruction: Associations with Functional Performance-A Systematic Review and Meta-Analysis.Sports medicine - open · 2026Pooled it
- Compromised quadriceps and hamstring force control, not maximal strength, is associated with gait biomechanics at 9 months following anterior cruciate ligament reconstruction.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Knee muscle strength and steadiness for individuals with anterior cruciate ligament reconstruction and knee osteoarthritis.Clinical biomechanics (Bristol, Avon) · 2024Article
- Knee Extensor Torque Steadiness and Quadriceps Activation Variability in Collegiate Athletes 4, 6, and 12 Months After ACL Reconstruction.Orthopaedic journal of sports medicine · 2024Article
- Muscle function, Lysholm score and hop performance in individuals with clinical indications for the combined reconstruction of the anterior cruciate and the anterolateral ligaments of the knee: A cross-sectional study.Clinics (Sao Paulo, Brazil) · 2023Article
- Does the Extension Torque Control Differ between Injured and Uninjured Knees of ACL-Deficient Individuals?Medical journal of the Islamic Republic of Iran · 2022Article
- Single-leg hop distance normalized to body height is associated with the return to sports after anterior cruciate ligament reconstruction.Journal of experimental orthopaedics · 2021Article
- Article
- Deficits in Quadriceps Force Control After Anterior Cruciate Ligament Injury: Potential Central Mechanisms.Journal of athletic training · 2019Article
- Knee-Extension Torque Variability and Subjective Knee Function in Patients with a History of Anterior Cruciate Ligament Reconstruction.Journal of athletic training · 2016Article
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeContrary to the ample data available regarding the functional significance of isokinetic knee strength in patients with anterior cruciate ligament deficiency (ACLD), much less is known about the functional significance of isokinetic knee steadiness. This cross-sectional study aimed to evaluate, in patients with ACLD, the independent impact of isokinetic quadriceps and hamstrings torque steadiness on single-leg hop performance.
methodsEighty-seven patients with unilateral ACLD participated. Patients performed isokinetic quadriceps and hamstrings steadiness and strength testing at 60°/s on an isokinetic dynamometer. Muscle steadiness and strength were represented by the wavelet-derived mean instantaneous frequency and peak value of the torque-time curves, respectively. To measure hop performance, patients performed a single-leg hop for distance and a 6-m single-leg hop for velocity.
resultsOne of two patients [n = 45 (51 %)] had a 10 % or greater difference in knee torque frequency levels between the ACLD and contralateral knees. In multivariable models adjusted for age, sex, knee pain, and knee strength, hamstrings steadiness was significantly related with hop velocity whilst quadriceps steadiness was significantly related with both hop distance and velocity. Variance decomposition analyses suggested that quadriceps steadiness was similar in importance to hamstrings strength on hop distance and velocity.
conclusionsIn patients with ACLD, isokinetic knee steadiness deficits were common and were independently associated with single-leg hop performance. Knee torque steadiness-a heretofore understudied variable-may prove a useful adjunct to conventional peak torque measurements by offering additional information to researchers and rehabilitation professionals about muscle performance and neuromuscular knee control. LEVEL OF EVIDENCE: Prognostic studies, Level III.
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