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J Sci Med Sport. 2016 Dec;19(12):964-969. doi: 10.1016/j.jsams.2016.03.005. Epub 2016 Mar 24.

Immediate effect of valgus bracing on knee joint moments in meniscectomised patients: An exploratory study.

Author information

1
Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
2
Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark; Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Australia.
3
Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Australia.
4
Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Australia. Electronic address: halm@unimelb.edu.au.

Abstract

OBJECTIVES:

Patients undergoing medial arthroscopic partial meniscectomy are at increased risk of developing and/or progressing knee osteoarthritis, with increased medial compartment load being a potential contributor. The aim of this study was to evaluate the immediate effect of a valgus unloader knee brace on knee joint moments in patients following medial arthroscopic partial meniscectomy.

DESIGN:

Within-participant design.

METHODS:

Twenty-two patients (age 35-55 years) who had undergone medial arthroscopic partial meniscectomy within the previous 8-15 months completed three-dimensional analysis of gait, forward lunge and one-leg rise during two conditions: with and without a valgus unloader knee brace. Outcome measures included the peak and impulse of the knee adduction moment and the peak knee flexion moment.

RESULTS:

The peak knee flexion moment increased during brace condition for forward lunge (mean difference [95% CI]) 0.54 [0.27-0.82] (Nm/(BW×HT)%), p<0.001 and one-leg rise (mean difference 0.45 [95% CI 0.08-0.82] (Nm/(BW×HT)%), p=0.022). No other significant differences were found between conditions in any of the included tasks.

CONCLUSIONS:

A significant effect of the knee brace was detected in terms of an increase in peak knee flexion moment during the more demanding tasks such as forward lunge and one-leg rise. This increase implies enhanced stability of the knee provided by the brace, which may induce increased knee function and knee-related confidence during strenuous tasks. Future research is required to explore the structural implications.

KEYWORDS:

Arthroscopy; Biomechanics; Braces; Knee; Knee osteoarthritis

PMID:
27049007
DOI:
10.1016/j.jsams.2016.03.005
[Indexed for MEDLINE]

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