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Center-of-pressure displacement during postural changes in relation to pressure ulcers in spinal cord-injured patients
(Lippincott Williams & Wilkins, 2008) Kaymak, Guelcin; Tosun, Aliye Kapukiran; Kanatli, Ulunay
Objective: To evaluate the center-of-pressure displacement in spinal cord-injured patients, to investigate dynamic sitting stability and its relationship with pressure ulcers. Design: Sixteen spinal cord-injured patients and 18 healthy volunteers were included in the study. For the assessment of dynamic sitting stability, center-of-pressure displacement during maximum unsupported forward, backward, and right- and left-sided trunk leaning were measured with a seat sensor system, which was placed between the subject's buttocks and chair. Results: Center-of-pressure displacements in all directions in spinal-injured patients were smaller than healthy volunteers (P < 0.05). Center-of-pressure displacements for high- and low-thoracic spinal cord-injured patients were not significantly different. History of previous pressure ulcer was not different between high- and low-thoracic spinal cord-injured patients (chi(2) = 0.90, P = 0.62). Mean center-of-pressure displacement during forward and backward leaning were smaller in patients with pressure ulcer history (P = 0.04 and 0.03, respectively). Conclusions: The results of this study suggest that impaired dynamic sitting stability is associated with pressure ulcer development.