Greater knee flexion excursion/moment in hopping is associated with better knee function following anterior cruciate ligament reconstruction.

Autor: Perraton LG; Department of Physiotherapy, School of Primary and Allied Health Care, Monash University, Building B, McMahons Road, Peninsula campus, Frankston, VIC, 3199, Australia. luke.perraton@monash.edu., Clark RA; School of Health and Sport Sciences, University of the Sunshine Coast, Sippy Downs, Australia., Crossley KM; School of Allied Health, La Trobe University, Bundoora, Australia., Pua YH; Department of Physiotherapy, Singapore General Hospital, Singapore, Singapore., Whitehead TS; Orthosport Victoria, Epworth Hospital, Melbourne, Australia., Morris HG; The Park Clinic, Melbourne, Australia., Culvenor AG; School of Allied Health, La Trobe University, Bundoora, Australia.; Paracelsus Medical University, Institute of Anatomy Salzburg and Nuremburg, Salzburg, Austria., Bryant AL; Melbourne School of Physiotherapy, The University of Melbourne, Melbourne, Australia.
Jazyk: angličtina
Zdroj: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA [Knee Surg Sports Traumatol Arthrosc] 2019 Feb; Vol. 27 (2), pp. 596-603. Date of Electronic Publication: 2018 Oct 06.
DOI: 10.1007/s00167-018-5197-7
Abstrakt: Purpose: Individuals with impaired knee function after anterior cruciate ligament reconstruction (ACLR) may be at greater risk of developing knee osteoarthritis related to abnormal knee joint movement and loading. The aim of this study was to assess the association between knee biomechanics and knee laxity during hopping and clinically assessed knee function (i.e., patient-reported knee function and hop tests) following ACLR.
Methods: Sixty-six participants (23 women, mean age 28 ± 6 years, mean 18 ± 3 months following ACLR) completed a standardized single-leg hopping task. Three-dimensional movement analysis was used to assess knee flexion excursion and body weight/height normalized knee flexion moments during landing for the involved limb. Anterior-posterior knee laxity was assessed with a KT-1000 knee arthrometer. Participants then completed a patient-reported knee function questionnaire and three separate hop tests (% of uninvolved limb) and were divided into poor and satisfactory knee function groups (satisfactory: ≥85% patient-reported knee function and ≥ 85% hop test symmetry). Associations between knee function and hop biomechanics/knee laxity were assessed using logistic regression and interquartile range scaled odds ratios (OR IQR ).
Results: Greater knee flexion excursion (OR IQR 2.9, 95%CI 1.1-7.8), greater knee flexion moment (OR IQR 4.9, 95%CI 1.6-14.3) and lesser knee laxity (OR IQR 4.7, 95%CI 1.5-14.9) were significantly associated with greater odds of having satisfactory knee function (≥ 85% patient-reported knee function and ≥ 85% hop test symmetry).
Conclusion: Greater knee flexion excursion/moment during hop-landing and lesser knee laxity is associated with better patient-reported knee function and single-leg hop test performance following ACLR. Patients with lower levels of knee function following ACLR demonstrated hop-landing biomechanics previously associated with early patellofemoral osteoarthritis. Therefore, interventions aimed at improving hop landing biomechanics in people with poor knee function are likely required.
Level of Evidence: III, Cross-sectional study.
Databáze: MEDLINE
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