Goldenstien Trauma List 3 Flashcards
Causes of compartment syndrome (7)
Intrinsic
- Fracture
- Ischemia-reperfusion
- Rhabdomyolysis
- Space occupying processes (abscess/hematoma)
Extrinsic
- Tight wound closure
- Tight dressings/splints/casts
- Circumferential burns (eschar)
Cierny classification of osteomyelitis (4)
- Type I: medullary
- Type II: superficial
- Type III: localized
- Type IV: diffuse
Cierny host types (3)
- A: little/no immunocompromise, normal response to infection
- B: mild systemic/local immunocompromise, impaired response to infection
- C: severe immunocompromise, no response to infection
XR findings of osteomyelitis (6)
- Soft tissue swelling (earliest)
- Trabecular destruction/lysis
- Cortical destruction
- Periosteal reaction
- Involucrum formation
- Sequestrum
Indications for surgical debridement of osteomyelitis (4)
- Presence of an abscess
- Presence of a sequestrum
- Presence of metallic implants
- Refractory cases
Possible indications for removal of implants (8)
- Pain at the implant site
- Risk of late infection
- Implant dislodgement/migration
- Stress-shielding
- Implant corrosion
- Implant-induced metal hypersensitivity
- Tumorigenesis
- Teratogenesis
IM nail hoop stresses decreased by (4)
- Posterior start point
- Slotted nails
- Thin-walled nails
- Titanium nails
IM nail stiffness increased by (5)
- Interlocking
- Increased nail diameter
- Increased wall thickness
- Open sections (slotted)
- Stainless steel nail (vs. titanium)
Types of plate fixation (5)
- Compression (static)
- Tension band (dynamic compression)
- Neutralization
- Buttress
- Bridging
Ways to maximize screw pullout strength (4)
- Larger outer diameter
- Smaller root diameter
- Finer pitch
- Increased bone density
Rule of 7 70’s for brachial plexus injury (Narakas) (7)
- 70% caused by motor vehicle accidents
- 70% involve motorcycles/bicycles
- 70% have multiple injuries
- 70% of brachial plexus injuries are supraclavicular
- 70% have at least one root avulsion
- 70% with a root avulsion have a lower plexus (C7-T1) root avulsion
- 70% with a lower root avulsion develop chronic pain
Findings of preganglionic brachial plexus injury (5)
- Horner’s syndrome
- Scapular winging (serratus anterior or rhomboids)
- Diaphragmatic paralysis
- Early neuropathic pain
- Preserved sensory nerve action potentials
Components of early nonoperative management of brachial plexus injuries (3)
- EMG at 6 weeks and 3 months
- Early referral to plastic surgery
- Splinting
- Physiotherapy to prevent contractures
- Antagonist botox injections
- Neuromodulating medications for pain control
(E.E.S.P.A.N.)
Options for surgical treatment of brachial plexus injuries
- Exploration and primary repair
- Neuroma excision and cable grafting
- Neurotization (root avulsions)
- Tendon transfers
- Free innervated muscle transfer
- Arthrodesis
- Amputation
Surgical priorities when treating brachial plexus injuries (3)
#1 – elbow flexion
- Nerve transfer
- Tendon transfer
#2 – stable shoulder
- Nerve transfer
- Arthrodesis
#3 – hand function
- Nerve transfer
- Tendon transfer/tenodesis
- Arthrodesis
- Free innervated muscle transfer
Decision-making factors regarding peripheral nerve repair (5)
- Age of the patient (#1)
- Patient expectations
- Rehabilitation potential
- Type and severity of nerve injury
- Alternate reconstruction options
Good prognostic factors for outcome of peripheral nerve injury (5)
- Younger age (< 20)
- Sharp, clean wounds
- Early repair (10-14 days)
- Direct repair
- Healthy, clean, vascular bed
Poor prognostic factors for outcome of peripheral nerve injury (5)
- Age > 20
- Blast or rupture injury
- Delayed repair (> 14 days)
- Segmental defect
- Infected or scarred bed
Principles of nerve repair (5)
- Healthy, vascular bed
- Tension-free repair
- 8-0 suture to gauge tension then 9-0/10-0
- Appropriate orientation of the nerve
- Postoperative immobilization for 3 weeks
Methods of determining correct nerve orientation (3)
- External topography
- Fascicular arrangement
- Vascular anatomy
Methods of dealing with nerve gaps
- Shorten the bone
- Neurolysis
- Transposition
- Nerve graft
- Bioactive conduits
Types of nerve repairs (3)
- Basic epineural suture (digital/sensory nerves)
- Group fascicular repair (major mixed peripheral nerves)
- Conduit repair (single function nerves with short gaps)
Classification of glenoid fractures (Mayo) (5)
- Type I: anteroinferior glenoid rim, body intact
- Type II: superior 1/3-1/2 of glenoid with coracoid, body intact
- Type III: inferior/posteroinferior glenoid, body intact
- Type IV: inferior glenoid with extension into body
- Type V: type IV plus additional coracoid, acromion or free superior articular fragment
Injuries associated with scapular fractures (12)
- Head injury
- Skull fractures
- Cervical spine injuries
- Brachial plexus injuries
- Arterial injury (not aorta)
- Clavicle fractures
- Rib fractures
- Pneumo/hemothorax
- Pulmonary contusions
- Intraabdominal injury
- Pelvic fractures
- Extremity fracture
(Proximal → distal)
Indications for ORIF of scapula fractures (5)
glenohumeral instability
- > 25% glenoid involvement with subluxation of humerus
- > 5mm of glenoid articular surface step off or major gap
- excessive medialization of glenoid
displaced scapula neck fx
- with > 40 degrees angulation or 1 cm translation
open fracture
loss of rotator cuff function
coracoid fx with > 1cm of displacement
Indications for ORIF of glenoid fossa fractures (3)
- > 5 mm displacement of the articular surface
- Displacement with subluxation of the humeral head
- > 25% involvement of the glenoid
- excessive medialization of glenoid
Indications for ORIF of glenoid neck fractures (3)
- > 1 cm of medial displacement
- > 40° angulation of the glenoid
- Floating shoulder
Injuries associated with scapulothoracic dissociation (3)
- Axillary artery disruption
- Brachial plexus injury (90%)
- Clavicle fracture (50%)
Classification of clavicle fractures (11)
Group I – middle third (80%)
Group II – distal third (15%)
- Type I: minimally displaced, LATERAL to the intact coracoclavicular ligaments
- Type II: displaced, medial to CC ligaments
- Type III: intraarticular with AC ligament injury
- Type IV: displaced with periosteal avulsion/rupture
- Type V: comminuted
Group III – medial third
- Type I: minimally displaced, ligaments intact
- Type II: displaced, ligaments ruptured
- Type III: intraarticular
- Type IV: physeal separation
- Type V: comminuted
Deforming forces acting on midshaft clavicle fractures (3)
- Superior pull of sternocleidomastoid
- Inferior weight of the arm
- Medial pull of pectoralis major
Clavicle fractures associated injuries (4)
- Sternoclavicular/acromioclavicular joint separations
- Brachial plexus injury
- Vascular injury
- Pneumothorax
Injuries associated with open clavicle fractures (4)
- Closed head injuries
- Cervical/thoracic spine fractures
- Scapulothoracic dissociation
- Pulmonary injuries
Indications for surgical intervention in clavicle fractures (8)
- Open fractures
- Neurovascular injury
- Floating shoulder
- Skin compromise
- Type III distal clavicle fractures
- Midshaft fractures with > 2 cm of shortening
- Symptomatic nonunions
- Segmental fractures (?)
Complications of clavicle fractures (5)
- Non-union
- Malunion
- Skin numbness
- Symptomatic hardware
- Neurologic symptoms
Risk factors for non-union of clavicle fractures (8)
- Inadequate immobilization
- Refracture
- Marked displacement
- Primary ORIF
- Type III lateral clavicle fractures
- Increased age
- Female
- Comminution
Outcomes of surgically treated displaced midshaft clavicle fractures vs. nonoperative treatment (5)
- Higher patient satisfaction
- Similar ROM
- Improved strength
- Improved endurance
- Decreased nonunion rates
Indications for surgical treatment of a “floating shoulder” (5)
- Glenohumeral instability
- Articular displacement > 5 mm
- Open injury
- Neurovascular compromise
- Any indication for treatment of the isolated injuries
Stabilizers of the acromioclavicular joint (5)
Static
- Capsule
- AC ligaments
- Coracoclavicular ligaments
Dynamic
- Anterior deltoid
- Trapezius
Classification of acromioclavicular joint injuries (Rockwood) (6)
- Type I: AC sprain
- Type II: AC rupture, CC ligaments intact (< 25% superior displacement)
- Type III: AC rupture, CC disruption (25-100% superior displacement)
- Type IV: posterior displacement of lateral clavicle
- Type V: > 100% superior displacement of lateral clavicle through deltotrapezial fascia
- Type VI: subcoracoid displacement of lateral clavicle
Nonoperative treatment of AC joint injuries (4)
- Sling for comfort until pain gone
- Start PT for ROM when non-painful
- Strengthening when symmetric shoulder ROM
- Return to contact sports at 3-4 months (type III)