Swan neck deformity is:: (A) Hyperextension at DIP, Flexion of PIP, (B) Extension of DIP, Hyperflexion at PIP, (C) Extension of both DIP & PIP, (D) Flexion at DIP, Hyperextension at PIP
Answer is D. Deformities of RA - Swan Neck Deformity - Flexion at DIP and hypeension at PIP - Flexor insufficiency of PIP - Boutonniere deformity / Button hole deformity - Extensor deficiency at PIP joint - Hypeension of DIP & Flexion of PIP - Z deformity of thumb - Ulnar detion of fingers Z-deformity of thumb