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Correction of swan neck deformity in rheumatoid arthritis using a new lateral extensor band technique.

Authors
  • Sirotakova, M
  • Figus, A
  • Jarrett, P
  • Mishra, A
  • Elliot, D
Type
Published Article
Journal
Journal of Hand Surgery (European Volume)
Publisher
SAGE Publications
Publication Date
Dec 01, 2008
Volume
33
Issue
6
Pages
712–716
Identifiers
DOI: 10.1177/1753193408092787
PMID: 18694915
Source
Medline
License
Unknown

Abstract

Swan neck deformity is a progressive and disabling condition that commonly affects rheumatoid arthritic hands. During a 4-year period, 101 fingers in 43 patients had this deformity corrected using a new procedure combining the distally based extensor lateral band technique described by Littler and the flexor digitorum superficialis (FDS)-palmar plate pulley introduced by Zancolli. The ranges of motion of the metacarpophalangeal, proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints were assessed pre-operatively and 12 months after surgery. An average PIP joint hyperextension of -13.3 degrees was converted to +13.4 degrees . The ranges of motion of the proximal and DIP joints were significantly different (Student's t-test). No patient suffered recurrence of the deformity during an average follow-up of 20 months. This new technique improves some unappealing aspects of previous techniques and provides a stable and reliable correction of swan neck deformity.

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