Knee joint hypermobility may be related to talonavicular osteoarthritis (OA) and to ankle and foot symptoms, a recent study found. Ankle and foot radiographs and joint hypermobility data (Beighton Criteria) were available for 848 participants (2003‐2010) in this cross‐sectional study. General joint hypermobility was defined as a Beighton score ≥4 (range 0‐9); knee hypermobility was defined as hyperextension of at least 1 knee. Standing anteroposterior and lateral foot radiographs were read with standard atlases for Kellgren‐Lawrence grade, osteophytes and joint space narrowing at the tibiotalar joint, and for osteophytes and joint space narrowing to define OA at 5 foot joints. The sample consisted of 68% women and 33% African Americans; mean age=71 years; mean BMI=31 kg/m2; general joint hypermobility=7%, knee hypermobility=4%; ankle injury=11.5%, and foot injury=3.8%. Although general joint hypermobility was not associated with ankle and foot outcomes, knee hypermobility was associated with ankle symptoms, foot symptoms, and talonavicular OA (adjusted odds ratios of 4.4, 2.4, and 3.0, respectively).
Golightly YM, Hannan MT, Nelson AE, et al. Relationship of joint hypermobility with ankle and foot radiographic osteoarthritis and symptoms in a community‐based cohort. [Published online ahead of print June 28, 2018]. Arthritis Care Res. doi:10.1002/acr.23686.