What is the Triscaphe articulation?
The triscaphe joint is the shared joint between the scaphoid, trapezium and trapezoid bones in the wrist. This joint is also referred to by its much longer name, the scaphotrapeziotrapezoid (STT) joint.
What is severe Triscaphe?
Triscaphe arthrodesis involves fusion of the scaphoid, trapezium, and trapezoid bones. The external bony relationship, however, should be preserved to prevent bony collapse or the development of arthritis in the neighboring joints.
What is Triscaphe arthritis?
Triscaphe degenerative arthritis is the second most common type of degenerative arthritis in the wrist. The most common is the pattern of destruction associated with a scapholunate advanced collapse (SLAC) wrist. The diagnosis is relatively easy when radiographs confirm the isolated joint destruction to the STT joint.
What is the STT joint?
The scaphotrapeziotrapezoid (STT) joint is also known as the triscaphe joint. It is a joint that is shared between the scaphoid, trapezium and trapezoid bones in the wrist. The biomechanics of STT joint is not completely understood. It is a dome-shaped joint found on the radial side of the wrist.
Where is the Pisotriquetral joint?
wrist
The pisotriquetral joint is the smallest of the four joints of the wrist. Although separate, it is often connected to the radiocarpal joint through a fenestration. The gross anatomy and kinematics of the pisotriquetral joint have been well described.
What is scaphoid trapezium joint?
Triscaphoid joint arthritis is the localised pain and inflammation of the shared joint between the 3 carpal bones of your wrist. These bones are called scaphoid, trapezium, and trapezoid and are present at the base of your thumb.
How do you treat STT?
What treatments are available for STT arthritis? Most patients with this condition do not need surgery but manage with various combinations of painkillers, splints and activity modification. Local anaesthetic and steroid injections into the joint can sometimes relieve symptoms for some time.
What is STT injection?
Scaphotrapezium-trapezoid (STT) joint arthritis is one of the most common forms of wrist arthritis. Conservative management often involves corticosteroid injection. Despite this, there is a scarcity of literature on palpation-guided injection techniques for the STT joint.
What causes Pisotriquetral arthritis?
Osteoarthritis of the pisotriquetral joint is most often caused by acute and chronic trauma and instability. The symptoms of osteoarthritis of the pisotriquetral joint are pain over the pisiform, with pressure and grinding of the joint.
What is Pisotriquetral joint?
The pisotriquetral joint is well recognised as a site of pain on the ulnar side of the wrist. 1–5. Yamaguchi et al2 described various patterns of degenerative change in the pisotriquetral joint in a study of 80 cadaver wrists.
What is the triscaphe joint?
The triscaphe joint is the shared joint between the scaphoid, trapezium and trapezoid bones in the wrist. This joint is also referred to by its much longer name, the scaphotrapeziotrapezoid (STT) joint.
How is the capsule over the triscaphe incised?
The capsule over the triscaphe joint is incised transversely, between the tendons of the extensor carpi radialis longus and brevis. The entire articular surface of the scaphoid trapezoid and the scaphoid trapezium joints are removed with a rongeur.
What is the dorsal recess of the triscaphe joint?
This recess is the dorsal aspect of the triscaphe joint. Passive wrist flexion extension and radial/ulnar deviation were limited with tender end points. Passive forearm rotation was nontender. No other areas of tenderness or swelling were noted. This finding is similar to what is found in most patients with triscaphe degenerative arthritis.
How much gap is there between cancellous bone and triscaphe bone?
The cancellous bone is then densely packed into the triscaphe joint space with a dental amalgam tamp. With the external dimensions of the triscaphe joint maintained, this often translates to a 4- to 8-mm gap prior to grafting.