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
Causes of replantation failure (3)
- Arterial thrombosis
- Venous congestion/thrombosis
- Infection
Options for surgical treatment of thumb amputations (4)
- Replantation (#1 choice)
- Revision amputation
- Toe-to-thumb transfer
- Pollicization
Classification of ring avulsion injuries (Urbaniak) (3)
Type 1: circulation adequate
Type 2A: circulation inadequate, no bone/tendon injury
Type 2B: circulation inadequate, bone/tendon injury
Type 3: complete degloving
Principles of digit amputation (6)
- Preserve functional length
- Maintain function and cosmesis
- Stable and nontender soft tissue coverage
- Preserve sensibility
- Avoid symptomatic neuromas
- Early mobilization
Principles of treatment of high pressure injection injuries (5)
- Immediate decompression and mechanical debridement
- Wide exploration
- Leave wounds open
- Multiple debridements as needed
- Broad spectrum antibiotics
Negative prognostic factors in high pressure injection injuries (5)
- Presentation > 10 hours after injection
- Pressure > 7000 psi
- Oil-based paint
- More material
- Injection into digit
Classification of extensor tendon injuries (9)
Zone I: at the DIP joint
Zone II: over the middle phalanx
Zone III: at the PIP joint
Zone IV: over the proximal phalanx
Zone V: at the MCP joint
Zone VI: over the metacarpal
Zone VII: dorsal wrist
Zone VIII: distal forearm
Zone IX: proximal forearm
Classification of mallet finger (zone I extensor tendon injuries) (4)
Type I: closed/blunt trauma ± a small chip fracture
Type II: laceration at or proximal to DIP
Type III: deep abrasion with loss of tendon substance
Type IV: physeal fracture in children
Indications for surgical fixation of a mallet finger (4)
- Fracture fragment ≥ 30% of the articular surface
- Displacement > 2 mm
- Volar subluxation of the distal phalanx
- Occupation prevents splinting
Complications of mallet fingers (9)
- Persistent deformity/extensor lag
- Secondary swan neck deformity
- Post-traumatic DIP arthritis
- Skin slough
- Nail deformity
- Joint incongruity
- Infection
- Pin failure
- Subluxation
Causes of boutonniere deformity with zone III extensor tendon injuries (3)
- Central slip rupture
- Triangular ligament injury/attenuation
- Lateral band volar migration
Indications for surgical treatment of zone III extensor tendon injuries (central slip rupture) (3)
- Avulsion with a bone fragment
- Acute injury with volar subluxation of the lateral bands (traumatic boutonniere)
- Delayed treatment of a missed central slip injury
Poor prognostic factors for delayed treatment of a central slip rupture (3)
- PIP contracture > 30°
- Failure to regain full extension preoperatively
- Age > 45 years
Classification of flexor tendon laceration (Verdan) (5)
Zone I: distal to FDS insertion
Zone II: within the fibroosseous tunnel (“no man’s land”)
Zone III: in the palm
Zone IV: within the carpal tunnel
Zone V: proximal to the carpal tunnel
Criteria for successful flexor tendon repair (6)
- Appropriate timing (up to 10 days)
- Appropriate incisions
- Minimal touching of tendon
- Preserve pulleys
- Core and epitendinous suture repair
- Early protected ROM
Principles of tendon repair (3)
- Strength proportional to the # of strands crossing repair
- Dorsal placement stronger
- Best suture configuration is a 4-strand Kessler with epitendinous repair
Advantages of adding an epitendinous repair (3)
- Increases strength of repair
- Decreases gap formation at repair site
- Improves tendon gliding by smoothing repair
Methods to increase the strength of a flexor tendon repair (3)
- Adding an epitenon repair
- More sutures across repair site
- Dorsal sutures
Classification of flexor digitorum profundus avulsion injuries (“Jersey finger” - Leddy & Packer) (3)
- Type I: retracted into palm, vincula disrupted
- Type II: retracted to A2/3 pulley, vincula intact
- Type III: bony avulsion with retraction to the A4 pulley (DIP)
- Type IIIA: fracture and tendon avulsion
Principles of rehabilitation of flexor tendon injuries (3)
- Dorsal block splint for 6 weeks (30°wrist flexion, 70° MCP flexion)
- 4 weeks of passive PIP/DIP flexion
- Active flexion started at 4 weeks
Negative prognostic factors following flexor tendon repair (5)
- Crush injury
- Associated fracture
- Skin loss
- Zone II injuries
- Increasing age
Complications of repair of flexor tendons (3)
- Flexion contracture
- Lumbrical plus finger (IP extension with finger flexion)
- Quadrigia effect
Indications for flexor tendon reconstruction (5)
- Failed repair
- Stiff digit
- Chronic laceration
- Scarred bed
- Incompetent pulley system
Requirements for flexor tendon reconstruction (4)
- Supple, mature skin
- Adequate vascularity
- Sensate finger
- Full passive ROM