Knee osteoarthritis may lead to narrowing of the intercondylar notch due to osteophyte formation. thereby causing changes in native knee biomechanics. The normal close contact between the condyles and the anterior cruciate ligament (ACL) during knee extension may be compromised due to narrowing of the notch and result in ACL damage. progression of knee osteoarthritis. https://www.roneverhart.com/Medline-Wheelchair-Hip-Bolster-Positioners-Wheelchair-Hip-Bolster-Wedge-14-x-2-x-5-MDTHB1425/