Lunato-triquetral fusion and associated spinal abnormality.

Lunato-triquetral fusion is a rare congenital anomaly. Its association with skeletal dysplasias, tarsal coalitions and synostotic states in the upper limbs and other parts of the body is well established. There is not mention in the English literature about its association with congenital spinal abnormalities and secondary osteoarthrosis in the wrist and two such cases are now described. Both cases presented with symptoms in the dominant hand and had symptoms of backache in the past. Their clinical course and X-ray findings are described.