04 Wrist
typora-copy-images-to: ./images
Bones
![](https://photos.thisispiggy.com/file/wikiFiles/53363D91-BDFC-41ED-AD19-C539E84B6DC0.jpg)
Scaphoid
![](https://photos.thisispiggy.com/file/wikiFiles/2506128E-0E1C-4829-801C-3360779A874F.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/F5DAAFB4-8F9D-44EC-8CD3-7E3C3F82D6E3.jpg)
- palmar and dorsal branches supply scaphoid
- blood to distal/lateral first then proximal/medial
- avascular necrosis to proximal portion
![](http://www.uworld.com/media/L11743.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/78ECA432-8BFF-45D8-87F9-0F2CA247A184.jpg)
- waist of scaphoid fracture
- result in nonunion
Lunate
![](https://photos.thisispiggy.com/file/wikiFiles/3E38B89E-2CE9-4257-8BD2-964802877A78.jpg)
- B
- sits on top and attaches to radius
- rest of bones fall backward. Lunate attached and falls forward
![](https://photos.thisispiggy.com/file/wikiFiles/7B4308F1-57A2-411D-8DBC-55604747EA9B.jpg)
- if displaced anteriorly in dislocation can compress carpal tunnel
Carpel Tunnel
![](https://photos.thisispiggy.com/file/wikiFiles/CC9303EC-6459-41E8-9A38-742FF07F8FFC.jpg)
- carpel: wrist bone
- tunnel: median nerve inside, between flexor retinaculum and bones
![](https://photos.thisispiggy.com/file/wikiFiles/315B5925-66A8-47CF-B778-7B5B3DF61E22.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/0710E149-A81B-4FF9-B899-FC3D584E37D4.jpg)
- pic: everything in yellow
- small branch of median come off before carpel tunnel and provides sensory innervation over thenar
- carpel tunnel: sensory loss of lateral fingers but not thenar
![](https://photos.thisispiggy.com/file/wikiFiles/278C94F4-8AB4-4A42-AFEE-F4A35A7C77D3.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/387F0785-9564-43CE-8FDD-044A3D55B21F.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2FA4E86C-16F0-4893-846A-9BE36DCDA3A5.jpg)
- association with carpel tunnel
![](https://photos.thisispiggy.com/file/wikiFiles/44D469C4-916D-4C97-AA67-2E513095BDE6.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/1475EB1B-9C8C-413E-A555-A83034FAD373.jpg)
Guyon's Canal
![](https://photos.thisispiggy.com/file/wikiFiles/8F490CEB-5E97-4E15-B2C5-D4D0C05010C5.jpg)
- how ulnar gets into hand, can be compressed
- above transverse ligament and not below
![](https://photos.thisispiggy.com/file/wikiFiles/5FBB99F3-CCCA-4AED-8D00-238FD3637D04.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/B9AF0367-602B-4018-8ABE-66D7F6C950DC.jpg)
Pediatric
![](https://photos.thisispiggy.com/file/wikiFiles/C4D211DF-4F0A-46D6-A690-9FD5CE6518D5.jpg)
- children have softer bones
- bone doesn't completely snap in two
Greenstick
![](https://photos.thisispiggy.com/file/wikiFiles/CB59CB87-6339-4EA0-B2F5-FD0B181C2012.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/F95B73E8-B1DC-4994-B2E7-1A98413829B3.jpg)
- part of bone still attached medially
Torus
![](https://photos.thisispiggy.com/file/wikiFiles/62CADD1E-9125-40E8-9BAA-7D2D803FD986.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/00949EFF-C293-41B7-85D3-24742C0A7DD0.jpg)
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