Application methods of pet medical equipment in joint fixation

Writer：admin Time：2023-04-03 22:38 Browse：℃

Application methods of pet medical equipment in joint fixation

Some injuries are too extensive to be successfully reconstructed. These injuries are extensive bone loss in those medial radial columnar processes. If the bone is lost and extends to the joint surface of the radius, there will not be sufficient joint support from the radiocarpal bone. In addition, the ability to generate sufficient medial ligament support is questionable, and in this case, full body joint fixation of the wrist bone is the best method to maintain limb function. Although reconstruction may occur, if not possible, it would be joint fixation surgery, which would waste a lot of time and cost.

Application methods of pet medical equipment in joint fixation

When using external bone fixation, joint fixation surgery should be performed early before the wound heals, which has a possibility of successful fusion and a lower chance of bone infection. The process will be delayed for a few days until the debridement stage is completed and some granulation tissue has already begun to appear. During this period, the wrist bone needs to be fully supported with bandages, sometimes augmented with hot plastic splints or steel wire frames. If it is necessary to use external provisions to support the joint, fusion should also be performed, as described in the overstretched section above. The main difference is the use of self formed porous bone grafts, as there must be sufficient soft tissue to cover the graft and allow it to undergo early vascular distribution. For early bone transplantation, exudate is another contraindication, because the secretion may take away the graft fragments. In this case, joint debridement and fixation should be performed, but the transplantation should be delayed until there is a healthy granulation tissue bed with no exudate. In that case, the granulation tissue should be carefully lifted from the joint surface to allow the graft to wrap around the joint space. Cover this area with impregnated gauze cotton balls for a few days until the granulation tissue covers the area again.

Metacarpal and phalangeal bones

Metacarpal fracture: Metacarpal fractures occur in all three anatomical parts of the bone - the base (proximal end), the bone body, and the head (distal end).

Basal fractures: The medial (second) and lateral (fifth) bones are the most common. Because these are the tips where ligaments are inserted, the angle of foot valgus (lateral) metastasis can be seen in the second metacarpal fracture, and the angle of foot valgus (medial) metastasis can be seen in the fifth metacarpal fracture. Attention should be paid to the injury of the ligament between the carpal bone and the palm, which may also cause excessive extension between the carpal and palm.

Closed reduction: Non metastatic fractures can be treated with external fixation, but during the inappropriate combination of eversion or inversion during healing, there is usually some fragment transfer. Be sure to use a reliable plastic splint or short leg dressing.

Open reduction and internal fixation: The fixation of metastatic fractures is generally carried out through the technique of circular tensile metal wire. Square head screw are also useful in this case. Comminuted fractures in a large variety may need to be treated with a combination of small discs, square head screw and ring binding wires.

Application methods of pet medical equipment in joint fixation

Greyhound can suffer a stress fracture of the second metacarpal bone (and third metacarpal bone) of the right foot.

The fixation of acute injury was performed using a splint in the palm for 4 weeks. Fix with square head screw of 2.0mm pocket screw when there is no reaction to fixation. Chronic injury can be stimulated and restarted through the healing response of osteocentesis. Some 1.5~2mm holes were drilled into the fracture site to stimulate the healing response, which was performed 4 weeks after the foot was fixed with a splint.

Postoperative care: Primary fixation with dressings or splints requires approximately 6 weeks, except in pressure fractures, which require only 4 weeks.

If internal fixation is performed, plastic palm splints or short dressings should be maintained for 3-4 weeks. After removing the splint, limit practice to 3-4 weeks.

Bone fracture

When two intermediate bones are not included, a fracture of one or even both metacarpal bones is not a serious injury. A simple palm splint can help them heal quite quickly, and when three or all four bones break, the situation is completely different, especially in large and giant species. Generally, a single splint can cause delayed or inappropriate healing, often resulting in no healing. This is a problem, especially when using spoon shaped cleats. In addition, there may be a reduction of valgus and arch of the bone's foot, as they cannot be fully supported in the spoon shaped splint.