Breed: Samoyed, weight: 12.6kg, age: 6 months, gender: male.

This is a very thin but large-boned young Samoyed. For unknown reasons, his left femoral head was dislocated and he was therefore unable to walk. He was referred to our hospital from another hospital to seek treatment. The best treatment option for hip disease is, of course, hip replacement. But can such a young patient undergo hip replacement? The answer is yes. Animals that can undergo total hip replacement surgery can be operated on from 5-6 months of age, provided that the growth plate of the acetabulum has closed and the acetabulum does not continue to "grow". The x-rays show that the patient's left femoral head is dislocated and the acetabular growth plate has closed. Hip replacement surgery can be performed. The advantage of hip replacement in young animals is that the bones have an abundant blood supply, good healing and recovery ability, and the bones can quickly grow into the implant. The prosthesis thus achieves a stable state. The disadvantages are the softness of the bones in juvenile animals, the tendency to lose compression in biological hip joints, the unclosed growth plate of the greater trochanter, and the thin femoral cortex (susceptibility to fracture). As in this patient.

The appropriate femoral stem prosthesis and acetabular cup prosthesis were selected after calibrationaccordingto Marker on the iBlueVet orthopaedic planning system. Preoperative planning determined the use of a #6 biological femoral stem, a 22mm biological acetabular cup, and the preparation of +0, +3, and +6 13mm femoral head prostheses. Intraoperative testing with a femoral head prosthesis model was performed before deciding on the final femoral head prosthesis.

Planned implants: #6 biological femoral stem, 22mm biological acetabular cup, +0 or +3 or +6 13mm femoral head prosthesis.

Preoperative X-rays