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11 Cards in this Set
- Front
- Back
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What is the vascular supply to the humeral diaphysis?
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Perforating branches of brachial artery, with the main nutrient artery entering the medial humerus distal to the midshaft
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What nerve function must you be wary of with humeral shaft fractures?
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Radial nerve
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Classification scheme for humeral shaft fractures
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Descriptive
- Open versus Closed - Location - Nondisplaced/Displaced - Direction - Intrinsic condition of bone - Articular extension |
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Most humeral shaft fractures (>90%) is treated surgically or non-surgically?
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Nonsurgically
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What are the tolerances of humeral shaft fractures?
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1. 20 degrees of anterior angulation
2. 30 degrees of varus angulation 3. 3 cm of bayonet apposition |
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Nonoperative treatment options for humeral shaft fractures
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1. Hanging cast
2. Coaptation splint ** After 1 to 2 weeks, can switch to functional bracing (hydrostatic soft tissue compression and maintain fracture alignment) |
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What ORIF provides best functional results for humeral shaft fractures?
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4.5mm dynamic compression plate with fixation of 6 to 8 cortices proximal and distal to fracture site
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What are the indications for IM fixation of a humeral shaft fracture?
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1. Segmental fractures in which plate placement would require considerable soft tissue dissection
2. Osteopenic bone 3. Pathologic fractures |
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With antegrade nailing of humeral shaft fractures, what neurovascular structure is at risk for injury during proximal locking screw insertion?
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Axillary nerve
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Why are distal locking screws for IM nail of humeral shaft fracture placed in AP plane rather than lateral to medial?
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Risk injury to lateral antebrachial cutaneous nerve and the radial nerve
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What are indications for external fixation of humeral shaft fractures?
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1. Infected nonunions
2. Burn patients with fractures 3. Open fractures with extensive soft tissue loss (GUNSHOT) |
