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29 Cards in this Set
- Front
- Back
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In ORIF for diaphyseal distal humeral fractures, in what two ways can the construct torsional stiffness be increased?
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Longer plates and screws
Bicortical fixation |
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What is the treatment for a nondisplaced lateral column distal humerus fracture?
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Cast in supination
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What is the treatment for a nondisplaced medial column distal humerus fracture?
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Cast in pronation
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lf the distal triceps is taken down for dissection, how should it be repaired?
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Suture through transosseous tunnels
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What are the two most common complications associated with distal humeral ORIF?
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Decreased elbow ROM
Ulnar nerve injury |
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What ligamentous structure is commonly injured with radial head fracture?
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MCL
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What nerve is most commonly injured?
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Posterior interosseous nerve
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When planning treatment for a radial head fracture, patients with what distal injury must be excluded? Why?
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Essex-Loprestin lesion
Contraindication to radial head excision without prosthetic replacement |
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Must also check for what associated bony injury? Why?
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Coronoid fracture
Component of "terrible triad" injury Contraindication to radial head excision without prosthetic replacement |
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If there are no contraindications to excision, can a partial excision of the radial head be performed?
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No
Radial head excision must be "all or none" |
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To maintain the stability of the elbow, what percent of the olecranon must be
intact? |
30%
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What is the ideal fracture pattern for use of a tension band?
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Transverse
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What are the three indications for plate fixation?
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Comminuted
Distal to coronoid Oblique fracture pattern |
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To maintain elbow stability, what percent of the coronoid must be intact?
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50%
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Therefore, what is the indication for coronoid ORIF?
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>50% coronoid involved
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A coronoid fracture may be a marker of what condition?
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Posteromedial rotatory instability(PMRI)
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What is the preferred surgical approach to address coronoid fracture?
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Dissect between two heads of the flexor carpi ulnaris (FCU)
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What is a Hahn-Steinthal injury?
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Capitellar fracture fragment consists of bone and cartilage
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How is it treated?
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ORIF
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What is a Kocher-Lorenz injury?
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Capitellar fracture fragment consists of cartilage
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How is it treated?
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Excision
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What is the definition of a type Monteggia fracture?
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Fracture apex anterior
Anterior radial head dislocation |
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What is the dehnition of a type II Monteggia fracture?
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Fracture apex posterior
Posterior radial head dislocation |
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What is the definition of a type III Monteggia fracture?
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Metaphyseal fracture
Lateral dislocation |
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What is the definition of a type IV Monteggia fracture?
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Radius and ulna fractures
Anterior dislocation |
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In what position should the elbow be casted after ORIF of Monteggia type I?
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110 degrees of flexion
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. . . type II?
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70 degrees flexion
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How can a Monteggia fracture be differentiated from a transolecranon fracture/dislocation?
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In a transolecranon fracture, proximal radioulnar joint (PRUJ) remains intact
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What is the primary stabilizer of the PRUJ?
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Annular ligament
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