Final answer:
To prevent knee flexion contracture post-BKA, it's important to support knee ligaments and ensure prosthetic components' proper alignment.
Step-by-step explanation:
To prevent flexion contracture of the knee after below-knee amputation (BKA), it is vital to ensure proper alignment and stabilization of the knee joint. The ligaments that support the knee joint include the tibial collateral ligament and the fibular collateral ligament, which help resist hyperextension and rotation of the extended knee. Additionally, the anterior cruciate ligament and posterior cruciate ligament play crucial roles in resisting hyperextension and preventing anterior displacement of the femur, respectively. Proper alignment of the prosthetic knee components during knee replacement surgery is achieved through careful placement and adjustment, ensuring that the condyles of the femur roll and glide properly over the tibial condyles. This correct alignment maximizes bony support and stability in all knee positions.