Fingertip avulsion: Difference between revisions
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*The '''sterile matrix''' is deep to the nail, adheres to it and is distal to the lunule. | *The '''sterile matrix''' is deep to the nail, adheres to it and is distal to the lunule. | ||
*The '''germinal''' portion is proximal to the matrix and is responsible for nail growth. | *The '''germinal''' portion is proximal to the matrix and is responsible for nail growth. | ||
===Fingertip Zones=== | |||
*Zone I - Distal to tip of phalanx | |||
*Zone II - Between tip of phalanx and lunule | |||
*Zone III - Proximal to lunule | |||
==Management== | ==Management== |
Revision as of 20:46, 5 January 2015
Background
- Consult hand surgeon for all patients with Amputation proximal to the lunula (crescent-shaped whitish area)
Anatomy
- The perinychium includes the nail, the nailbed, and the surrounding tissue.
- The paronychia is the lateral nail folds
- The hyponychium is the palmar surface skin distal to the nail.
- The lunula is that white semi-moon shaped proximal portion of the nail.
- The sterile matrix is deep to the nail, adheres to it and is distal to the lunule.
- The germinal portion is proximal to the matrix and is responsible for nail growth.
Fingertip Zones
- Zone I - Distal to tip of phalanx
- Zone II - Between tip of phalanx and lunule
- Zone III - Proximal to lunule
Management
No exposed bone or nail bed involvement
- Treat conservatively with serial dressing changes alone
- Cover wound with nonadherent dressing
- Instruct pt to soak fingertip in antibacterial soap-added water for 10min QD and then rapply nonadherent dressing
- F/u in 2d
Exposed Bone
- Rongeur bone if bony protuberance is <0.5cm in length
- Then let heal by secondary intention as described above
Source
- Tintinalli