How To Tell If You Are Lost

If you get lost in this approach, reconsider radiology. It is easy to get lost in the terminology, so here are a few definitions:

Eponychium: The thin membrane of tissue extending from the nail wall for a short distance onto the nail. Hyponychium: The mass of keratin beneath the distal nail (just distal to the distal edge of the sterile matrix). Lunula: The convex opaque portion of the proximal nail, corresponding to the underlying germinal matrix. Nail bed: All of the soft tissue beneath the nail plate, including the germinal matrix and sterile matrix.

Nail fold: The depression on the dorsum of the finger, where the nail inserts.

Nail wall: The dorsal skin overlying the nail fold. Parionychium: The nail bed and the paronychium (border tissue around the nail).

Paronychia: An abscess or soft tissue infection of the eponychium or paronychium.

Paronychium: The border tissue around the nail.

Eponychium

FIGURE 29—3 The eponychium and nail wall are elevated off of the nail plate for decompression of purulence.

Paronychium
FIGURE 29-1 The anatomy of the nail.

FIGURE 29—3 The eponychium and nail wall are elevated off of the nail plate for decompression of purulence.

Il Hyponychium

B Eponychium

B Paronychium

FIGURE 29—2 Incision for the treatment of a simple paronychia.

FIGURE 29—4 The nail plate can be removed to address injuries to the nail bed or for treatment of more extensive infection.

B Lunula

B Germinal Matrix

B Nail Bed

B Sterile Matrix

SECTION VII

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Anterolateral

(watson-jones) approach

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