Swan Neck Deformity
Hyperextension of PIP with flexion of DIP joint. Caused by RA (most common), trauma, chronic mallet finger, spasticity. Clinical: finger looks like swan neck, loss of grip strength. Treatment: splints, silver rings, tendon balancing procedures, arthrodesis in severe cases. Differentiate from boutonniere (opposite deformity).
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1Practised by MCQ
10What is the characteristic joint position in a swan neck deformity?
mcqWhich of the following is the most common cause of swan neck deformity?
mcqIn swan neck deformity, which anatomical structure primarily prevents PIP hyperextension?
mcqWhich test is used to assess intrinsic tightness in the context of swan neck deformity?
mcqWhat is the main treatment option for a patient with type I swan neck deformity?
mcqWhat is the primary difference between swan neck and boutonnière deformity?
mcqIn the management of type II swan neck deformity, which procedure may be necessary?
mcqWhich of the following conditions can lead to swan neck deformity due to mallet finger?
mcqWhat is the management for a fixed PIP deformity with joint destruction in swan neck deformity?
mcqWhat happens to the terminal extensor tendon in swan neck deformity?