Primary use of the index finger for reconstruction of amputated thumbs.

Seven cases of primary reconstruction of traumatic amputation of the thumb using the index finger are reported. In six cases, the reconstruction was done using an injured index finger, while in one case where the amputation of the thumb was through the carpometacarpal joint, an intact index finger was primarily pollicised. This reduces cost of treatment, hospitalisation period and allows earlier rehabilitation without a period of a 'no thumb experience'. We have followed all the patients for a minimum period of 2 years and all of them have excellent functional results. We believe that pollicisation of a normal index finger, if thumb amputation is through the carpometacarpal joint or an injured index finger at the time of initial management of a severely traumatised hand with thumb amputation is an excellent technique for thumb reconstruction.