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at 8:44 a.m. Oct, 04, 2024 ]
by
Ahmed7
Author:
michaelhafen
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Midshaft fracture of the humerus

- Damage of the nerve in the spiral groove of the humerus; deep brachial artery is at risk of damage
- Triceps brachii are spared and sensory nerves over posterior arm / forearm are unaffected (nerves that supply these have already been given off); thus supination is the most impacted
Compression of the axilla
- Due to incorrect use of crutches or passing out with arm over chair
Radial head subluxation ("nursemaids elbow")
- Longitudinal traction applied to an extended an pronated arm (e.g., by nursemaid pulling vigorously at childs arm) can lead to annular ligament slipping over the head of the radius and impinging deep radial nerve
- Causes lateral elbow pain, weakness, no sensory deficits or wrist drop
Repetitive pronation / supination:
- Leads to finger drop
- E.g., screwdriver use
- Palsy in deep radial nerve (innervating the extensors of the fingers and wrist)

Lecture Notes
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Missed Questions
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Pathoma
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Boards and Beyond
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First Aid
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Sketchy




Watch Brachial Plexus Overview




Watch Brachial Plexus Overview
Sketchy 2



Watch Common Pediatric Fractures



Watch Common Pediatric Fractures
Sketchy Extra
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Picmonic
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Pixorize
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Physeo
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Bootcamp
Watch associated Bootcamp video - Shoulder and Elbow: Humerus Fractures
Watch associated Bootcamp video - Brachial Plexus Nerves and Lesions: Radial Nerve
Watch associated Bootcamp video - Brachial Plexus Nerves and Lesions: Radial Nerve
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Additional Resources


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