It is likely that she may be having a trigger thumb. A nodule forms at the level of the palm crease that gets stuck in a pulley leading to flexion deformity. Such a deformity cannot be seen on the xray.
It would be ideal for you to visit a pediatric ortho surgeon who can rule out this condition by clinical examination. Following this he may order USG or MRI to confirm his clinical examination.
Answered2016-05-18 07:01:50
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