RT Journal Article
SR Electronic
T1 May the force be with you: understanding how patellofemoral joint reaction force compares across different activities and physical interventions—a systematic review and meta-analysis
JF British Journal of Sports Medicine
JO Br J Sports Med
FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine
SP 521
OP 530
DO 10.1136/bjsports-2021-104686
VO 56
IS 9
A1 Harvi F Hart
A1 Brooke E Patterson
A1 Kay M Crossley
A1 Adam G Culvenor
A1 Michaela C M Khan
A1 Matthew G King
A1 Prasanna Sritharan
YR 2022
UL http://bjsm.bmj.com/content/56/9/521.abstract
AB Objective To systematically review and synthesise patellofemoral joint reaction force (PFJRF) in healthy individuals and those with patellofemoral pain and osteoarthritis (OA), during everyday activities, therapeutic exercises and with physical interventions (eg, foot orthotics, footwear, taping, bracing).Design A systematic review with meta-analysis.Data sources Medline, Embase, Scopus, CINAHL, SportDiscus and Cochrane Library databases were searched.Eligibility criteria Observational and interventional studies reporting PFJRF during everyday activities, therapeutic exercises, and physical interventions.Results In healthy individuals, the weighted average of mean (±SD) peak PFJRF for everyday activities were: walking 0.9±0.4 body weight (BW), stair ascent 3.2±0.7 BW, stair descent 2.8±0.5 BW and running 5.2±1.2 BW. In those with patellofemoral pain, peak PFJRF were: walking 0.8±0.2 BW, stair ascent 2.5±0.5 BW, stair descent 2.6±0.5 BW, running 4.1±0.9 BW. Only single studies reported peak PFJRF during everyday activities in individuals with patellofemoral OA/articular cartilage defects (walking 1.3±0.5 BW, stair ascent 1.6±0.4 BW, stair descent 1.0±0.5 BW). The PFJRF was reported for many different exercises and physical interventions; however, considerable variability precluded any pooled estimates.Summary Everyday activities and exercises involving larger knee flexion (eg, squatting) expose the patellofemoral joint to higher PFJRF than those involving smaller knee flexion (eg, walking). There were no discernable differences in peak PFJRF during everyday activities between healthy individuals and those with patellofemoral pain/OA. The information on PFJRF may be used to select appropriate variations of exercises and physical interventions.