A prospective observational study of falling before and after knee replacement surgery

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Abstract

Background: Knee arthritis is a risk factor for falling. Increasing numbers of people are receiving total knee arthroplasty (TKA) but the natural history of falling before and after TKA is unknown. Objective: to prospectively monitor falls in pre- and post-operative TKA patients and to identify independent risk factors for post-operative falling. Design: a prospective observational study with a 1-year follow-up. Participants: community-dwelling older people recruited from a regional orthopaedic centre. Methods: consecutive patients added to the TKA waiting list who completed monthly falls diaries, pre-operatively and 1 year post-operatively. Data on knee status (WOMAC: pain, stiffness and function), balance confidence (the Activities Balance Confidence Scale-UK-ABC-UK) and mood (Geriatric Depression Scale-GDS) were collected at quarterly intervals. Results: ninety-nine patients received a primary TKA. 24.2% fell in the last pre-operative quarter (24 patients reported 44 falls) and this decreased to 11.7-11.8% in the first four post-operative quarters. 45.8% of people who fell pre-operatively fell again in the first post-operative year. Higher pre-operative GDS scores and a history of falling were significant independent predictors of post-operative falling. Conclusion: a recent history of falling is common in people undergoing TKA and ∼45% of patients fall again in the year following surgery. Patients being considered for TKA should be asked about falls history and undergo falls risk assessment and intervention. © The Author 2008. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved.

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Swinkels, A., Newman, J. H., & Allain, T. J. (2009). A prospective observational study of falling before and after knee replacement surgery. Age and Ageing, 38(2), 175–181. https://doi.org/10.1093/ageing/afn229

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