What Is an Above the Knee Amputation?

Knee arthrotomy is a pediatric surgery / amputation and arthrotomy.

Knee dissection

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Knee arthrotomy is a pediatric surgery / amputation and arthrotomy.

Chinese name

Knee dissection

Foreign name

complete leg amputation

Knee joint disconnection; complete leg amputation; knee joint disarticulation

Classification of knee dissection

Orthopedics / Amputation

Anatomy of knee dissection

Surgery related anatomy.

Knee Dissection Anesthesia and Posture

Use spinal or epidural anesthesia. Supine position, soften the injured limb slightly with a soft pillow.

Knee Dissection Surgery Procedures

Cut the anterior long posterior short (2: 1) flap, the anterior flap should be slightly wider than the posterior flap, so that the anterior flap can completely cover the femoral condyle, and cut the skin fascia according to the shape of the flap The anterior flap should include the patellar ligament and the aponeurosis on both sides.

Peel the upper end, and cut the sacro-tibial tract, joint capsule, anterior cruciate ligament, and bilateral collateral ligaments one by one while turning the anterior fascial flap, and cut the biceps femoris tendon on the fibula head.

After pulling the calf, straighten the knee joint, and cut the posterior knee capsule and diaphragm. The iliac arteries and veins were cut and double ligated. The phrenic nerve was gently pulled downward and cut with a sharp knife, and allowed to retract above the muscle section.

After cutting the gastrocnemius, hemimenis, semitendinosus, gracilis, and sartorius muscles one by one behind the upper end of the tibia, the lower leg is detached from the femoral condyle, and the synovium and patella of the femoral condyle are finally removed.

Pull the iliac ligament to the intercondylar femoral condyle and stump of the cruciate ligament and suture the stump of the gastrocnemius muscle, relax the tourniquet, completely stop bleeding, and rinse the wound with isotonic saline.

The incision is sutured in layers, and one rubber drainage strip is placed on each side of the wound. If it is found that the patella has adhered to the femoral condyle during surgery, it is not necessary to remove the patella; if the synovium of the joint capsule has shrunk and loses secretion The function of synovial fluid eliminates the need to remove the synovial membrane.