What Is Wrist Arthrodesis?

Thumb metacarpal joint fixation is suitable for pain caused by osteoarthritis of thumb metacarpal joints. It fuses most of the horn bones of the first metacarpal bone, eliminates the pain, and makes the hand grip strong.

Thumb palm wrist fixation

Right!

Thumb metacarpal joint fixation is suitable for pain caused by osteoarthritis of thumb metacarpal joints. It fuses most of the horn bones of the first metacarpal bone, eliminates the pain, and makes the hand grip strong.

Thumb palm wrist fixation

Thumb-carpal-to-carpal joint fusion; thumb-carpal-to-carpal joint fusion; thumb-carpal-to-carpal joint fixation

Orthopedics / joint fusion / wrist fusion

81.2601

The wrist joint is very important for the flexibility of the hand. The joints of the wrist include the radial wrist, the intercarpal bone, and the metacarpophalangeal joint. Therefore, the wrist joint fusion points: radial wrist (radius, boat, lunar bone), intercarpal bone (boat, moon, skull), metacarpal (carpal and metacarpal), total carpal fusion.

Wrist fusion refers to total wrist fusion. Radial carpal fusion only retains a small amount of flexion and extension between the carpal bones and completely loses lateral movement, which is not as stable as full wrist fusion. Carpal bone fusions, such as boat and moon injuries, have been replaced by many procedures. The metacarpal-wrist fusion is mainly used for the first metacarpal and carpal fusion.

The functional position of the wrist joint fusion is dorsiflexion of 20 °, neutral position or ulnar deviation of 5 ° to 10 °, and the maximum grip strength of the hand. Wrist fusion surgery must strictly grasp the indications. If it can be solved by other surgery, try not to perform fusion. Only when the carpal bone is severely damaged and other operations cannot restore function, fusion surgery is performed.

Anatomy related to thumb, palm and wrist fixation surgery.

Make a 2.5cm transverse incision at the base of the large ichthyus muscle of the palmar face. If necessary, use an L-shaped incision for the first metacarpal bone. Peel off the starting point of the intermuscular muscle, directly expose most of the horns and metacarpophalangeal joints, pull the abductor hallucis longus and extensor hallucis tendon to the radial side, and find the radial flexor wrist muscle to protect it. The articular surfaces of the first metacarpal and most of the horn bones were excised, and the osteosynthesis was aligned with the upper Kirschner wire, or drilled with screws. Suture the wound.

After thumb and wrist fixation, keep the thumb to the palm position, but not on the plane of the palm. The forearm was fixed with a tubular cast (the distal end including the interphalangeal joint) for 6 to 8 weeks, until bone healing was achieved. After half a year, the Kirschner wires or screws were removed under local anesthesia.