The scapholunate is an interosseous carpal ligament that provides stability to the proximal carpal row. It consists of dorsal, proximal and palmar segments that bridge the scaphoid and lunate. When the ligament complex tears, the scaphoid tends to flex while the lunate extends, creating translational and rotational instability between the two.

Elevate your hand as much as possible after the surgery to lessen the swelling. A fair amount of swelling after this surgery is normal. When you shower, cover the splint with a plastic bag to keep it clean and dry. Scapholunate (SL) dissociation is part of a spectrum of traumatic carpal bone instabilities and is defined as disruption of the ligamentous complex holding the scaphoid and lunate together. 1 The SL ligament complex consists of the volar, dorsal, and intermediate components, with the dorsal component being the strongest and primary stabilizer of the SL joint.

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Rupture of the scapholunate ligament causes scapholunate instability, which, if untreated, will eventually cause a predictable pattern of wrist osteoarthritis called scapholunate advanced collapse (SLAC). in this video we talk about the radiologic findings, diagnosis, treatment, and complications of scapholunate dislocation. Diagnostic X‐ray examination showed severe degenerative joint disease of the left wrist with scapholunate dissociation, scapholunate ligament tear, and avascular necrosis of the lunate (Figure 1). The patient was subsequently treated with corticosteroid injection of the wrist which only provided relief for less than a week.


Scapholunate Dissociation. Scapholunate dissociation occurs commonly from trauma involving a FOOSH onto an extended hand with ulnar deviation. This stresses and tears the scapholunate ligament, a U-shaped ligament between the two representative bones.

Scapholunate widening indicating scapholunate Stage I – Scapholunate dissociation. • Stage II – SL dissociation with Sugar tong splint. • Surgical options.

Scapholunate dissociation splint

Terry Thomas. IMMOBILIZATION TECHNIQUES So now that you've identified a wrist injury, do you splint it or cast it  widening of the scapholunate interval (Terry Thomas sign - named after the actor These injuries need no specific treatment other than rest in a splint initially  5 Apr 2019 So, if the scapholunate ligament is disrupted, the lunate will displace dorsally instability develops and dissociation becomes evident on x-ray.

Scapholunate dissociation splint

SLAC wrist first shows its affect in radio scaphoid joint and then causes problems in capitolunate joint. Know the causes, symptoms, treatment, staging and surgery for SLAC wrist. Scapholunate occurs when the scapholunate ligament is completely torn or stretched, allowing the scaphoid and lunate bones to separate or disassociate. The scaphoid may then tilt in a rotatory direction (volar), whereas the lunate bone tilts in a dorsal direction. This allows the two carpal bones to not only separate, but tilt away from each other. Scapholunate Dissociation The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas" sign to diagnosis scapholunate dissociation.
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Scapholunate dissociation splint

Reduce scapholunate interval using two Kirschner wires as joysticks. Splint the wrist for approximately 2 to 3 months, at which time the Kirschner wires are tendon reconstruction using a cadaveric model of static scapholunate dis Dec 17, 2020 Most are mild and resolve with splinting and symptomatic treatment. However, Note the abnormal widening of the scapholunate interval.

The chronic wrist pain associated with a scapholunate ligament tear is also referred to as scapholunate disassociation. In cases where the scapholunate ligament tears have not resulted in a complete disassociation, ligament fraying, thinning and/or irregularities result in an elongated ligament, which increases carpal space. Scapholunate Ligament Disruption is an injury involving the ligaments attaching the scaphoid to the lunate.
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Scapholunate dissociation splint

A grip compression view or wrist in ulnar deviation may be necessary in addition to PA/lateral views. Any of the following signs may be seen: Widening of the scapholunate joint space >3mm. Known as Terry-Thomas sign (or David Letterman sign) Rotary subluxation of the scaphoid. Lateral view: Scapholunate angle >60 degrees.

26 About 13.4% of distal radius fractures are associated with scapholunate dissociation.

Oct 11, 2019 GRAPHICS · Carpal bones · Radiograph and magnetic resonance imaging lunate fracture · Perilunate dislocation · Scapholunate dissociation 

This is the most common ligament injury of the wrist which if untreated may lead to dorsal intercalated segment instability (disi) and scapholunate advanced collapse (slac).

scapholunate dissociation causes the scaphoid to flex palmar and the lunate to dorsiflex if left untreated the DISI deformity can progress into a SLAC wrist DISI deformity may also develop secondary to distal pole of the scaphoid excision for treatment of STT arthritis DISI is a form of carpal instability dissociative in this video we talk about the radiologic findings, diagnosis, treatment, and complications of scapholunate dislocation.