When reviewing the chart shown in the accompanying figure for a new patient with rheumatoid arthritis, the nurse reads that the patient has swan neck deformities. Which deformity will the nurse expect to observe when assessing the patient?
a. A
b. B
c. C
d. D
ANS: D
Swan neck deformity involves distal interphalangeal joint hyperflexion and proximal interphalangeal joint hyperextension of the hands. The other deformities are also associated with rheumatoid arthritis: ulnar drift, boutonniere deformity, and hallux vagus.
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