Management of fingertip injuries

INTRODUCTION

Nail bed injuries and fingertip avulsions occur frequently and may have significant associated functional or cosmetic morbidity. These injuries are commonly treated in an outpatient setting. Nail bed lacerations require careful repair and measures to preserve the nail folds and germinal matrix. Complete fingertip avulsions require debridement, cleansing, and local wound care.

The repair of nail bed lacerations and fingertip avulsions are reviewed here. The management of subungual hematoma is discussed separately. (See "Subungual hematoma".)

MECHANISM OF INJURY

Isolated nail bed injury typically occurs as a result of direct blunt trauma (eg, crush in a door jamb). A nail bed injury almost always accompanies a partial or complete fingertip avulsion [1-3]. Fingertip avulsions often occur in the setting of door closure upon the finger, either along the edge of the door on the side of the hinge or the latch. Most avulsions are partial avulsions of the fingertip, although full amputations are not rare.

Fingertip avulsions are also caused by knives, slicers, exercise equipment (eg, treadmills, exercise bicycles), power tools and lawn mowers. In contrast to adults, complete or partial avulsions heal extremely well in children especially before adolescence. In particular, the literature indicates that children younger than two years of age are very likely to demonstrate complete distal tip regeneration after amputation when managed without repair [4,5].

ANATOMY

Proper management of fingertip injuries requires knowledge of anatomy of the nail bed as well as familiarity with the motor and neurovascular anatomy of the finger (figure 1).

                   

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Literature review current through: Aug 2014. | This topic last updated: Aug 19, 2014.
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