J Korean Soc Surg Hand.  2010 Jun;15(2):98-101.

Pseudomallet Finger Caused by an Osteochondroma from the Distal Part of the Middle Phalanx in a Child: A Case Report

Affiliations
  • 1Department of Orthopedic Surgery, Ajou University School of Medicine, Korea. Cho@ajou.ac.kr

Abstract

Osteochondroma is the most common benign bone tumor around the metaphysis. Usually, it is originated from the peripheral area of metaphysis-physis junction due to mutation of physeal chondrocyte. This 1-year and 3-month-old boy presented with a mallet deformity. Radiographs showed an abnormal mass on the distal part of the middle phalanx. It was connected to the articular cartilage which was not associated with the physis. Operative and pathologic findings showed typical osteochondroma. After excision of the osteochondroma with sparing of the extensor tendon and immobilization for 6 weeks with a full extension splint, the pseudomallet deformity disappeared.

Keyword

Finger phalanges; Osteochondroma; Mallet deformity

MeSH Terms

Cartilage, Articular
Chondrocytes
Congenital Abnormalities
Finger Phalanges
Fingers
Humans
Immobilization
Infant
Osteochondroma
Splints
Tendons
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