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Case. 40 yo M BIBEMS with no PMH presents with laceration to R index finger. Patient reports he was working on his car when a piece of metal fell and cut off part of his finger. PMH – denies PSH – denies Soc Hx - denies x3 Allergies – NKDA Meds – none. Case. Physical Exam – A&Ox3 NAD
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Case • 40 yo M BIBEMS with no PMH presents with laceration to R index finger. Patient reports he was working on his car when a piece of metal fell and cut off part of his finger. • PMH – denies • PSH – denies • SocHx- denies x3 • Allergies – NKDA • Meds – none
Case • Physical Exam – • A&Ox3 NAD • Vitals – T98.2 BP136/88 HR 77 RR 16 • HEENT – wnl • Neck – wnl • Lungs – CTA bl • Heart – S1, S2 RRR • Abd – Soft NT/ND +BS • Extremities – transverse amputation of 1.5cm of R index finger in zone 2 including nail bed involvement, distal to the germinal matrix, +bone exposure. Decreased ROM at distal interphalangeal joint otherwise FROM in all digits, no sensory deficits no other signs of injury
Fingertip Injuries VikasGoswamy MS4 SUNY Downstate
Fingertip Injuries • Defined as an injury at or about the level of the lunula • One of the most frequently injured parts of the hand • Can involve skin, soft tissue, nail, nail bed, bone
Fingertip Injuries • Involving only Pulp Tissue and Skin • Amputations that Involve < 1 cm of finger tip • No bone exposure • No nail or nail bed involvement • Can be treated conservatively with wound care, education on cleaning, and follow up after 2 days
Fingertip Injuries • With exposed bone • Management determined by size, geometry, mechanism, and angle of amputation • If <0.5cm but exposed bone, the bone can be trimmed using a rongeur to allow enough space for a soft tissue flap • Close by second intention with wound care after 2 days • For small injuries (<2cm) reattachment is generally not indicated
Fingertip Injuries • Nail bed • Made up of the germinal matrix and the sterile matrix • Germinal matrix extends from the nail fold to the lunula • Sterile matrix extends from lunula to hyponychium
Fingertip Injuries • Nail bed Involvement • Avulsion injuries to nail bed have poorer prognosis because germinal matrix fragments may be left under nail • If nail is available, use as graft and reattach with 6-0 or 7-0 absorbable mattress stitch • If not available toe nail graft can be used at later time
Fingertip Injuries • References • Davenport M. Chapter 41. Injuries to the Arm, Hand, Fingertip, and Nail. In: Ma OJ, Cline DM, Tintinalli JE, Stapczynski JS, Cydulka RK, Meckler GD, eds. Tintinalli's Emergency Medicine: A Comprehensive Study Guide. 8th ed. New York: McGraw-Hill; 2014. http://www.accessemergencymedicine.com/content.aspx?aID=56328606. Accessed October 12, 2012. • AAFP http://www.aafp.org/afp/2001/0801/p455.html