A case of bilateral mallet little finger is described. A 44-year-old male X-ray engineer who was lifting approximately 15-20 kilograms with both hands at work, noticed a deformity in both his little fingers. He had no family history of mallet finger and was not suffering from rheumatoid arthritis, carpal tunnel disease or trigger finger. There was no fracture or dislocation. The deformity was treated by splinting, with a satisfactory result. This case raises a question regarding the possible role of biochemical abnormalities causing mallet fingers.
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