II. Mechanism
- Fall on Outstretched Hand
- Scapholunate interosseous ligament is disrupted resulting in instability
III. Symptoms
- Radial aspect Wrist Pain, worse with gripping
IV. Imaging
-
Wrist XRay
- Scaphoid Bone and Lunate Bones separated 3 mm or more (aka Terry Thomas Sign, David Letterman Sign)
- Clenched-Fist View
- Accentuates widening between the Scaphoid Bone and the Lunate Bone
V. Differential Diagnosis
VI. Associated Conditions
VII. Management
- Immobilization in short arm volar splint
- Refer to orthopedics or orthopedic hand specialist
- Surgical repair
- Indicated for static dissociations
- Dynamic dissociations may be treated with 2-6 weeks of Forearm cast
VIII. Complications
- Scapholunate advanced collapse (SLAC Wrist)
IX. References
- Eiff (2018) Fracture Management, Elsevier, Philadelphia, p. 99-101
- Swadron and Mallon in Herbert (2018) EM:Rap 18(12): 3-4
Images: Related links to external sites (from Bing)
Related Studies
Concepts | Injury or Poisoning (T037) |
SnomedCT | 209602001 |
English | Complete tear scapholunate lig, Complete tear of scapholunate ligament, Complete tear of scapholunate ligament (disorder) |
Spanish | desgarro completo de ligamento escafosemilunar (trastorno), desgarro completo de ligamento escafosemilunar |
Ontology: Rupture of scapholunate ligament of wrist (C2317169)
Concepts | Pathologic Function (T046) |
SnomedCT | 430892004 |
English | Rupture of scapholunate ligament of wrist, Rupture of scapholunate ligament of wrist (disorder) |
Spanish | ruptura de ligamento escafosemilunar de la muñeca, ruptura de ligamento escafosemilunar de la muñeca (trastorno) |
Ontology: Scapholunate advanced collapse (C3164615)
Concepts | Disease or Syndrome (T047) |
SnomedCT | 447775001 |
English | Scapholunate advanced collapse, Scapholunate advanced collapse (disorder) |
Spanish | colapso escafosemilunar avanzado (trastorno), colapso escafosemilunar avanzado |