1. What is the usual mechaism of a scaphoid fx?
2. What are complications of a scaphoid fx?
3. How are scaphoid fx's classified?
4. What is seen clinically in scaphoid fx?
5. What are the borders of the anatomical snuff box?
6. What imaging is done to assess scaphoid fx?
7. What is the treatment of scaphoid fx?
Answers:
1. Fall on dorsiflexed wrist.
2. Osteonecrosis due to poor blood supply (supply is mainly to the distal 1/3 of bone) with carpal collapse.
3. By location: tubercle, distal pole, waist, proximal pole.
4. Swelling and tenderness around anatomical snuff box.
5. Base is scaphoid bone, lateral is APL and EPB, medial is EPL.
6. Plain films in ulnar deviation.
7. Fx may not appear on X-ray so treat anyway if suspicioius. If nondisplaced (<2mm),>2mm or not healing, need to consider surgery.
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