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X-ray images indicate scapholunate ligament instability when the scapholunate distance is more than 3 mm, which is called scapholunate dissociation. [7] A static scapholunate instability is generally readily visible, but a dynamic scapholunate instability can only be seen radiographically in certain wrist positions or under certain loading conditions, such as when clenching the wrist, or ...
In radiology, the Terry-Thomas sign is a scapholunate ligament dissociation on an anteroposterior view of the wrist. [1] [2] Most commonly a result of a fall on the outstretched hand , the scapholunate ligament ruptures resulting in separation of the lunate and scaphoid bones. This burst causes the scaphoid bone to dorsally rotate. [3]
Scapholunate advanced collapse (also known as SLAC wrist) is a type of wrist osteoarthritis. SLAC wrist is the most common type of post-traumatic wrist osteoarthritis [ 1 ] and is often the result of an undiagnosed or untreated scapholunate ligament rupture. [ 2 ]
Scapholunate advanced collapse is the most common form, followed by scaphoid non-union advanced collapse (SNAC). [3] Other post-traumatic causes such as intra-articular fractures of the distal radius or ulna can also lead to wrist osteoarthritis, but are less common.
Scapho-lunate dissociation: Atlas of Signs in Musculoskeletal Radiology: Gap between the scaphoid and lunate bones on AP wrist radiograph Thomas test: Hugh Owen Thomas: Orthopaedics: Fixed flexion deformity of hip: Supine patient flexes one hip whilst keeping other leg flat; back arches if flexion deformity is present Throckmorton's reflex
Scapholunate dissociation II Lunocapitate disruption III Lunotriquetral disruption IV Lunate dislocation References. External links This page was last edited ...
Scapholunate dissociation; Scapholunate ligament instability (rupture of this ligament leads to wrist instability) Triangular fibrocartilage complex (injury and degeneration) De Quervain tenosynovitis (when two tendons that control movement of the thumb become constricted by their tendinous sheath in the wrist)
Instability in the wrist can be caused by a torn Scapholunate ligament. The Brunelli Procedure does not fix the torn ligament. A hole is drilled through the Scaphoid bone and a part of a tendon taken from the patient is put through this hole and attached to the nearby bones. The procedure usually results in reduced movement of the wrist.