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The impact of a total knee arthroplasty on jaw movements, upper body posture, plantar pressure distribution, and postural control

Laura Heil, Laura Maltry, Sebastian Lehmann, Daniel Heil, Christoph Lehmann, Stefan Kopp, Eileen M Wanke, Michael H K Bendels, David A Groneberg, Daniela Ohlendorf
Cranio: the Journal of Craniomandibular Practice 2019 February 7, : 1-12

OBJECTIVE: The purpose of this study was to examine the influence of a total knee arthroplasty (TKA) on linked cranial and caudal structures.

METHODS: Thirty-five (14f/21m) subjects participated in this study: 15 subjects (9f, 6m) pre- and post- TKA and a control group of 20 subjects (5f, 15m). The measurements included: jaw condyle position and movement, back scan, plantar pressure distribution, and body sway.

RESULTS: There were no significant differences in electronic position analysis of the jaw; however, the protrusion of the TKA group improved (p = 0.001). The test group had a more anteriorly inclined thoracic spine and a less pronounced lumbar lordosis. Before and after surgery, the body sway in the test group was larger.

CONCLUSION: The TKA affected most prominently the static mechanisms of the postural control and the spine position. The trajectories of the mandible during protrusion also changed slightly.


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