The opening position of patella surgery in dogs is incision in the lower third of lateral femur. Both varus and varus adopt lateral skin incision, which passes through the lateral trochlear crest to the lower part of tibial tuberosity. Cut the skin, separate the subcutaneous fascia, cut the tensor fasciae, and fully expose the joint capsule. The longitudinal incision of the joint capsule should not be cut near the trochlear ridge, and a certain suture joint capsule should be left on the side of the trochlear ridge to fully expose the knee joint.

Patella, commonly known as kneecap, is the seed bone formed in the tendon of quadriceps femoris and the largest seed bone in the whole body. It is flat and millet-shaped, located under the skin and easy to touch. The upper width of the bone is the bottom, the tip is downward, the front is thick and the back is slippery. Can move up, down, left and right to protect the knee joint. The back of patella is smooth, covered with cartilage, connected with the patellar surface of femur, and the front is rough, with quadriceps tendon passing through it.

Treatment-related content

Emergency rescue should be carried out at the scene of the disease to prevent serious complications caused by the displacement of the broken end or the moving of the pet dog. Emergency rescue includes: First, stop bleeding, and tie the wound with bandages, cloth strips, ropes, etc. Rub iodine on the affected area, and take out the iodoform sulfanilamide powder from the wound. Second, after the fracture was temporarily bandaged and fixed, it was immediately sent to the veterinary clinic for treatment.

Reset, take Baoding, and reset under local anesthesia. When the fracture part of the limb is displaced, the assistant can pull it along the distal end of the limb shaft to straighten the displaced fracture part and make the two broken ends reset correctly. At this time, we should pay attention to whether the limb axis is normal and whether the two limbs are equal in length.

General cleaning of fixed and non-open fractures. For open fractures, after general treatment, iodoform sulfanilamide powder is taken out from the wound and fixed with plaster bandage or small splint. When fixing, it should be filled with cotton or cotton pad to prevent friction. Minimize the amount of exercise after fixation. After 3 to 4 weeks, you can exercise properly. Generally, after 40 to 60 days, the bandage and splint can be removed.