Abstract
Rehabilitation services are less-studied aspects of the management following total knee arthroplasty (TKA) despite long-term suboptimal physical functioning and chronic deficits in muscle function. This paper describes the preliminary findings of a six-week (12 session) eccentrically-biased rehabilitation program targeted at deficits in physical function and muscle function, initiated one month following surgery. A quasiexperimental, one group, pretest-posttest study with thirteen individuals (6 female, 7 male; mean age 57 ± 7 years) examined the effectiveness of an eccentrically-biased rehabilitation program. The program resulted in improvements in the primary physical function endpoints (SF-36 physical component summary and the six-minute walk test) with increases of 59% and 47%, respectively. Muscle function endpoints (knee extension strength and power) also increased 107% and 93%, respectively. Eccentrically-biased exercise used as an addition to rehabilitation may help amplify and accelerate physical function following TKA surgery.
Highlights
In the US, over 500,000 total knee arthroplasty (TKA) surgeries are performed each year for severe knee osteoarthritis and that number is expected to increase sevenfold over the two decades [1]
This paper describes the preliminary findings of a sixweek (12 session) eccentrically-biased rehabilitation program targeted at deficits in physical function and muscle function, initiated one month following surgery
We present a descriptive report of the use of an eccentrically-biased postoperative rehabilitation intervention targeted at deficits in physical function and muscle function following TKA surgery
Summary
In the US, over 500,000 total knee arthroplasty (TKA) surgeries are performed each year for severe knee osteoarthritis and that number is expected to increase sevenfold over the two decades [1]. Most TKA recipients experience a successful reduction of their knee pain and an improvement in knee function [2, 3]. Not all TKA recipients experience substantial improvements in their levels of pain, functional status, nor overall health-related quality of life. More than one-third of TKA recipients have suboptimal physical function [4,5,6,7]. Almost all TKA recipients report levels of physical function that are below age-matched normative levels [8] and their performancebased physical function scores rarely reach levels of control subjects [9]. Walking speeds are up to one-third slower [10], the time to negotiate stairs is two-times slower [11] and the distance walked in six minutes is 20% shorter [12] than control subjects
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