Lunotriquetral ligament instability: Difference between revisions
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==Background== | ==Background== | ||
*Ulnar equivalent of the scapholunate ligament injury | *Ulnar equivalent of the scapholunate ligament injury | ||
*May be confused | *May be confused with other causes of ulnar-sided wrist pain | ||
*Results from FOOSH with impact on hypothenar eminence | *Results from FOOSH with impact on hypothenar eminence | ||
Revision as of 21:03, 12 July 2016
Background
- Ulnar equivalent of the scapholunate ligament injury
- May be confused with other causes of ulnar-sided wrist pain
- Results from FOOSH with impact on hypothenar eminence
Clinical Features
- Localized tenderness on ulnar aspect of wrist just distal to ulna
Differential Diagnosis
Hand and finger injuries
- Distal finger
- Other finger/thumb
- Boutonniere deformity
- Mallet finger
- Jammed finger
- Jersey finger
- Trigger finger
- Ring avulsion injury
- De Quervain tenosynovitis
- Infiltrative tenosynovitis
- Metacarpophalangeal ulnar ligament rupture (Gamekeeper's thumb)
- Hand
- Wrist
- Drummer's wrist
- Ganglion cyst
- Lunotriquetral ligament instability
- Scaphoid fracture
- Extensor digitorum tenosynovitis
- Compressive neuropathy ("bracelet syndrome")
- Intersection syndrome
- Snapping Extensor Carpi Ulnaris
- Vaughn Jackson syndrome
- General
Diagnosis
- Note: subtle injuries may have normal radiographic appearance
- Imaging
- Lateral
- Volar intercalated segment instability is seen
- Lunate tilts palmar producing zigzag pattern opposite of scapholunate injury
- Volar intercalated segment instability is seen
- PA
- Widening of the triquetrolunate joint space
- Lateral
Management
- Ulnar gutter splint or short arm posterior mold; referral to orthopedist