What is STT osteoarthritis?

STT arthritis. This is arthritis occurring between three bones in the wrist; the Scaphoid, the Trapezium and the Trapezoid. It can lead to pain and stiffness in the thumb and wrist.

What type of joint is the STT?

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.

Where is the STT joint in the hand?

The most common symptom of osteoarthritis of the carpometacarpal (CMC) joint or scapho-trapezium/trapezoid (STT) joint, is pain at the bottom of the thumb. The pain can be worse with activities that require pinching, such as opening jars, turning door knobs or keys, and writing.

What is the STT complex?

Abstract. Arthritis of the scaphotrapeziotrapezoid (STT) joint presents with deep thenar eminence and thumb basilar pain and is often coexistent with carpometacarpal arthritis of the thumb. Conservative treatment includes splinting and corticosteroid injections.

What is the little bone in your wrist called?

Your wrist is made up of eight small bones (carpal bones) plus two long bones in your forearm — the radius and the ulna. Each finger consists of one hand bone (metacarpal) and three finger bones (phalanges), while each thumb consists of one metacarpal bone and two phalanges.

Is the triscaphe joint a common site of arthritis?

The triscaphe joint is also a commonly affected site in degenerative and inflammatory arthritis 2 . 1. The Wrist. LWW. (2009) ISBN:0781783399.

How are radial styloids excised in triscaphe degenerative arthritis?

Although not done in this case, we now routinely excise the distal 5 mm of the radial styloid with a rongeur, sloping volarly from distal to proximal. A transverse incision is made in the capsule, and the radioscaphoid joint is inspected. If the radioscaphoid joint has significant degenerative arthritis, then a SLAC reconstruction is performed.

Which is the dorsal aspect of the triscaphe joint?

The patient had specific localized tenderness and swelling of the scaphoid-trapezium-trapezoid (STT/triscaphe) joint. This area is located by following the index metacarpal proximally until a recess is palpated. This recess is the dorsal aspect of the triscaphe joint.

How is the capsule over the triscaphe joint 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. The dorsal nonarticular surface of the trapezium-trapezoid are cut back to cancellous bone.