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Clinical effectiveness of patella mobilisation therapy versus a waiting list control for knee osteoarthritis: a protocol for a pragmatic randomised clinical trial.

Clinical effectiveness of patella mobilisation therapy versus a waiting list control for knee osteoarthritis: a protocol for a pragmatic randomised clinical trial.
Author Information (click to view)

Sit RWS, Chan KKW, Yip BHK, Zhang DD, Reeves KD, Chan YH, Chung VCH, Wong SYS,


Sit RWS, Chan KKW, Yip BHK, Zhang DD, Reeves KD, Chan YH, Chung VCH, Wong SYS, (click to view)

Sit RWS, Chan KKW, Yip BHK, Zhang DD, Reeves KD, Chan YH, Chung VCH, Wong SYS,

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BMJ open 2018 03 148(3) e019103 doi 10.1136/bmjopen-2017-019103
Abstract
INTRODUCTION
Knee osteoarthritis (KOA) is a common, disabling and costly medical condition. The patellofemoral joint is a critical source of pain in individuals with KOA, and coexistence of patellofemoral osteoarthritis (PFOA) and tibiofemoral osteoarthritis (TFOA) is sometimes observed. The identification of subgroups with PFOA and customised interventions to correct underlying pathomechanics is beneficial for individuals with KOA. This study aims to evaluate whether a clinic-based patella mobilisation therapy (PMT) leads to significant improvement in pain, physical function and quality of life of individuals with KOA.

METHODS AND ANALYSIS
A total of 208 participants with coexistence of PFOA and TFOA will be recruited. A pragmatic randomised clinical trial will be conducted, and participants will be randomised into the PMT and waiting list groups. For the PMT group, three manual mobilisation sessions, along with home-based vastus medialis oblique muscle exercise, will be conducted at 2-month intervals. The waiting list group will continue to receive their usual care, and as an incentive the waiting list group will be offered PMT after the study period is over. The primary outcome is the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain subscale, and secondary outcomes include the WOMAC function and stiffness subscales, scores for objective physical function tests (the 30 s chair stand, 40-metre fast-paced walk test, the Timed Up and Go Test), and the EuroQol-5D scores. All outcomes will be evaluated at baseline and 6 months using intention-to-treat and incorporating covariate analysis.

ETHICS AND DISSEMINATION
Ethics approval has been obtained (CREC no: 2014.379). Results of the trial will be submitted for publication in a peer-reviewed journal.

TRIAL REGISTRATION NUMBER
ChiCTR-IPC-15006618; Pre-results.

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