Goldenstien Trauma List 6 Flashcards
Contraindications to ORIF of scaphoid nonunions (4)
- Smoker
- Older patient
- Progressive carpal arthrosis
- Chronic non-union
Decision-making factors for treatment of scaphoid nonunions (3)
- Location of nonunion
- Vascularity
- Deformity
Radiologic findings of proximal pole AVN in scaphoid nonunions (4)
- Bone resorption
- Cystic changes
- Sclerosis
- Low signal on T1 and T2 MRI
Complications of surgery for scaphoid nonunions (5)
- Persistent nonunion
- Hardware malpositioning
- Stiffness
- Chronic pain
- Nerve injury
Classification of scaphoid nonunion advanced collapse (4)
- Stage I: the osteoarthritis is only localized in the distal scaphoid and radial styloid.
- Stage II: the osteoarthritis is localized in the entire radioscaphoid joint.
- Stage III: the osteoarthritis is localized in the entire radioscaphoid joint with involvement of the capitolunate joint.
- Stage IV: the osteoarthritis is located in the entire radiocarpal joint and in the intercarpal joints. It also may involve the distal radio-ulnar joint (DRUJ).
Indications for ORIF of ulnar styloid fractures (4)
- Open injury
- Associated with DRUJ instability
- Significant displacement
- Large fragment involving the base
- Intraarticular fragment
Complications of DRUJ injuries (5)
- Late instability
- Post-traumatic arthritis
- Ulnocarpal abutment/impaction
- TFCC degeneration
- ECU tendon subluxation/dislocation
Stages of perilunar instability (Mayfield) (4)
- Stage I: Scapholunate ligament tear (scapholunate dissociation)
- Stage II: capitolunate ligament tear
- Stage III: Lunotriquetral ligament tear (perilunate dislocation)
- Stage IV: dorsal radiolunate ligament tear (lunate dislocation)
Sequence of events in progressive perilunar instability (Mayfield) (7)
- Scaphoid extension
- Opening of the space of Poirier
- Scaphoid failure
- Distal row dissociation
- Triquetrum hyperextension
- Lunotriquetral ligament failure
- Dorsal dislocation of the carpus
Things to look for on XR of perilunate injuries
- Bones for fracture
- Carpal height
- Gilula’s lines
- Carpal interosseous spaces
- Scapholunate and radiolunate angles
- Rotatory positions in proximal row
Intrinsic muscle releases for hand compartment syndrome (4)
- Thenar muscle release
- Hypothenar release
- Interossei release (2 dorsal incisions)
- Carpal tunnel release
Complications of nailbed injuries (8)
- Hypersensitivity
- Cold intolerance
- Split nail
- Hook nail
- Nonadherent nail
- Ingrown nail
- Ridging
- Osteomyelitis
Principles of treatment of fingertip injuries with tissue loss (5)
- Attempt to maintain length
- Prevent joint stiffness/contracture
- Preserve nail function if possible
- Provide sensate soft tissue to pulp
- Enable eventual pain-free use of the finger
Indications for replantation in upper extremity traumatic amputations (5)
- Thumb (almost any level)
- Multiple digit amputations
- Metacarpal amputations through the palm
- Amputation at the wrist or proximal
- Almost anything in a child
- Individual digits distal to the FDS insertion (zone I)
Contraindications to replantation (5)
- Single digit proximal to FDS insertion (zone II)
- Multitrauma
- Segmental injury/crush/avulsion
- Multiple medical comorbidities
- Poor rehabilitation potential
- Prolonged ischemic time (> 6 hours proximal to the carpus, > 12 warm/24 cold for a digit)
Principles of digit replantation surgical technique (8)
- Bone shortening and stable fixation
- Extensor tendon repair
- Flexor tendon repair
- Digital artery anastamosis (at least one/digit)
- Digital nerve repair
- Digital vein anastamosis (2 dorsal/digit)
- Skin repair
- Fasciotomies as needed