Abnormal triangular epiphysis causing angular deformity of the thumb

The Journal of Hand Surgery
Goo Hyun BaekHyoung Ho Kim

Abstract

To present a triangular-shaped abnormal secondary ossification center of the distal phalanx causing angular deformity of the thumb and the surgical outcome of corrective closing-wedge osteotomy for this deformity. We treated 6 patients with abnormal triangular epiphysis in the distal phalanx of the thumb, including 3 bilateral cases. The average age was 43 months and there were 2 boys and 4 girls. Of the 9 thumbs intraepiphyseal closing-wedge osteotomy was performed in 5 and proximal phalangeal closing-wedge osteotomy was performed in 4. We measured the deformities in degrees of angulation and the range of motion of the interphalangeal (IP) joint. The average duration of the follow-up period was 27 months after the surgery. Preoperative angular deformity of ulnar deviation averaged 30 degrees , which was reduced to an average of 12 degrees after osteotomy at the last follow-up assessment. All osteotomies healed and there was no evidence of physeal or articular damage. Interphalangeal joint range of motion did not decrease after surgery in all cases. Patients and parents were satisfied with the results of the surgery, although mild deformity persisted in the interphalangeal joint when in the flexed position after proximal phalan...Continue Reading

References

Jan 1, 1976·Clinical Orthopaedics and Related Research·V E Wood
Nov 1, 1976·Plastic and Reconstructive Surgery·T Miura
Jan 1, 1992·The Journal of Hand Surgery·J F JenningsF S Sherwin
May 1, 1985·The Journal of Hand Surgery·C A Peimer

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Citations

Oct 26, 2010·Pediatric Radiology·Jason M JohnsonDiego Lemos
Oct 10, 2008·Chirurgie de la main·F NoratG Magalon
Nov 30, 2007·Annals of Plastic Surgery·M M Al-Qattan

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