Discrepancy in limb lengths (anisomelia) is a common orthopedic 
   problem, arising from either shortening or overgrowth of one or more bones
   in the limbs. The object of this study was determination of lower limb
   lengthening operation results in 21 patient with lower limbs - length
   discrepancy that were admitted in Hamadan Hospitals in 1987- 1999.

          In this Cross - Sectional Descriptive Study , all lower limb lengthening
   operated in Hamadan Hospitals in 1987 - 1999 were studied. Primary data
   were recorded on the basis of patients files in hospital, then the necessary data
   were completed using the patients files in the private centers and later
   examination. Finally collected data were analyzed by EPI Info 6 software.

          The mean of age in the studied patients was 16.6± 4.9years. The most
   frequency of patients age (38%), was in age group of 13-15 years. 90.5% of
   patients were operated by leg lengthening and 9.5% of them by  thigh
   lengthening. 71.5% of patients were obtained increasing of length amounting
   to 30-55 mm in involved limb after operation. “ Wagner” external fixator was
   used in treatment of 14.3% of patients. 14.3% of patients needed corrected
   surgery before main surgery. 85.7% of patients needed complementary surgery
   after main surgery. The most common minor complication after lower limb
   lengthening operation created in 90% of patients was pain. The most common
   major complication after lower limb langthening operation was severe
   equanus deformity of foot that was created in 57.1% of patients.

          Evaluation of 21 lower limb lengthening operation showed that more
   attention should be paid to lower limb lengthenig operation because of
   poliomyelitis handicaps and war handicaps and accessibility of instruments
   for operation which not only can solve cosmetic problems but also
   functioning of handicaps