Chair Wedge Cushion-Hip Replacement Item # 284 This Wedge Cushion is used for post operative hip replacement operations to ensure that the patient’s knees are lower than their hips when sitting. The Wedge is covered in Mediflextra, a special vinyl cover for hospital use and is easy to wipe clean. This product is to help with the prevention of pressure sores. Sometimes due to the patient deteriorating, the product may become unsuitable. Continuous monitoring is necessary and alternative products may be recommended. Spray wipe, hand or machine wash cover only, up to 80°C. Do not tumble dry or wring - air dry only.