Lunotriquetral coalition refers to fusion of the lunate and triquetrial bones of the wrist and is the most frequent type of carpal coalition. Carpal coalition is rare and is considered a normal anatomic variant. It is frequently asymptomatic and often discovered as an incidental finding.
What is Lunotriquetral ligament?
The lunotriquetral (LT) ligament is an intrinsic ligament of the wrist, more particular an interosseous carpal ligament which provide stability to the proximal carpal row. This ligament has a thin, horseshoe- shaped structure and can be divided into three parts: a dorsal, a proximal and a volar one.
What is congenital fusion of the lunate and triquetrum?
Lunotriquetral coalition is the most common type of congenital carpal anomaly and represents congenital fusion of the lunate and triquetral bones of the carpus. It is most often diagnosed as an incidental finding in asymptomatic patients.
Where is the triquetrum?
wrist joint
The triquetrum is one of eight carpal bones that forms part of the wrist joint. It is a pyramidal shaped bone that can be found in the medial side of the wrist. The name triquetrum is derived from the Latin word triquetrus which means “three-cornered”.
Why does my Triquetrum hurt?
A Triquetral fracture is a break of the Triquetral bone (sometimes called triquetrum). It is one of the eight small carpal bones in the wrist and the second most commonly fractured carpal. A sudden, direct impact is the most common cause, resulting in wrist pain on the little finger side.
What is the Scapholunate joint?
The scapholunate joint is a small joint between two carpal bones at the wrist crease, namely the scaphoid and lunate bones. The scapholunate joint is very important for the stability of the wrist joint. It is often injured during sport, for example, if you fall heavily onto your hand.
Where is the Lunotriquetral ligament located?
The lunotriquetral ligament is centrally located at the region of the ulna (the smaller forearm bone) and carpal (wrist) bones. A lunotriquetral tear is in the region of the triangular fibrocartilage complex and is often difficult to differentiate in wrist pain.
What causes ulnar abutment syndrome?
Ulnar impaction syndrome, also known as ulnar abutment or ulnocarpal impaction or loading, is a painful degenerative wrist condition caused by the ulnar head impacting upon the ulnar-sided carpus with the injury to the triangular fibrocartilage complex (TFCC).
Where is the lunate bones found?
carpal
The lunate is a crescent-shaped carpal bone found within the hand. The lunate is found within the proximal row of carpal bones. Proximally, it abuts the radius. Laterally, it articulates with the scaphoid, medially with the triquetral, and distally with the capitate.
Why does my triquetrum hurt?
What stabilizes the wrist joint?
The triquetrum bone is the last bone found in the first row of carpal bones. It’s located closest to the pinky finger. It helps to stabilize the wrist and allows the joint to bear more weight.
Is triquetral and triquetrum same?
The triquetral bone (/traɪˈkwɛtrəl, -ˈkwiː-/; also called triquetrum, pyramidal, three-faced, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones.
Is isolated lunotriquetral arthrodesis rare?
As discussed earlier, isolated lunotriquetral arthritis is rare unless it is the result of a partial carpal coalition. This is one of the few clear indications for isolated lunotriquetral arthrodesis.
Can lunotriquetral coalition arthrodesis cause wrist instability and arthritis?
To that end, lunotriquetral coalition arthrodesis is performed [10]. However, carpal fusions can cause wrist instability and arthritis. Therefore, it is recommended to first exhaust all conservative managements before proceeding for surgical intervention.
What are the treatment options for lunotriquetral coalition?
Lunotriquetral coalition is managed conservatively or surgically. Initially, immobilization, elevation and anti-inflammatory drugs are prescribed [2]. If surgical intervention is required, complete fusion of the coalition is accepted as one of the treatments.
How common is lunotriq UE-Tral arthritis?
Although degenerative problems associated with scapholunate dissociation are a very common cause of wrist arthritis, isolated lunotriq ue-tral arthritis is rare unless it is encountered as a result of a partial carpal coalition [36].
