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Abnormal loading of the major joints in knee osteoarthritis and the response to knee replacement

Metcalfe, Andrew, Stewart, Caroline, Postans, Neil, Barlow, David, Dodds, Alexander, Holt, Catherine Avril, Whatling, Gemma Marie and Roberts, Andrew 2013. Abnormal loading of the major joints in knee osteoarthritis and the response to knee replacement. Gait & Posture 37 (1) , pp. 32-36. 10.1016/j.gaitpost.2012.04.018

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Abstract

Knee osteoarthritis is common and patients frequently complain that they are ‘overloading’ the joints of the opposite leg when they walk. However, it is unknown whether moments or co-contractions are abnormal in the unaffected joints of patients with single joint knee osteoarthritis, or how they change following treatment of the affected knee. Twenty patients with single joint medial compartment knee osteoarthritis were compared to 20 asymptomatic control subjects. Gait analysis was performed for normal level gait and surface EMG recordings of the medial and lateral quadriceps and hamstrings were used to investigate co-contraction. Patients were followed up 12 months post-operatively and the analysis was repeated. Results are presented for the first 14 patients who have attended follow-up. Pre-operatively, adduction moment impulses were elevated at both knees and the contra-lateral hip compared to controls. Co-contraction of hamstrings and quadriceps was elevated bilaterally. Post-operatively, moment waveforms returned to near-normal levels at the affected knee and co-contraction fell in the majority of patients. However, abnormalities persisted in the contra-lateral limb with partial or no recovery of both moment waveforms and co-contraction in the majority. Patients with knee osteoarthritis do experience abnormal loads of their major weight bearing joints bilaterally, and abnormalities persist despite treatment of the affected limb. Further treatment may be required if we are to protect the other major joints following joint arthroplasty.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: R Medicine > R Medicine (General)
T Technology > TA Engineering (General). Civil engineering (General)
Additional Information: ESMAC – Best Paper award 2011 – Runner UP
Publisher: Elsevier
ISSN: 0966-6362
Last Modified: 04 Jun 2017 04:23
URI: http://orca.cf.ac.uk/id/eprint/38121

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