<prompt> Carpal fusion is seen in?Aperts syndromeRheumatoid arthritisPost-traumatic casesAll of the above  <response>: Ans DThe most commonly involved bones are the lunate and triquetrum. Multiple carpal coalitions are often associated with other anomalies including Apert syndrome, Ellis-van Creveld syndrome, Holt-Oram syndrome, Turners syndrome. Acquired intercarpal fusion can either be a consequence of an inflammatory arthropathy e.g. rheumatoid arthritis, psoriatic arthritis, reactive arthritis or injury, or due to surgical arthrodesis. 