my son is 10 months old he was born 34 weeks weighing 2.7kg that time now he is 8.3kg with height 72cms, we have notice some discripency in his leg his legs r not equal nor his knees there a lil differnce in cms. his left leg is lil big then right what can be done. we have done an xray and the doc said that the thigh limb is growing slower its small compare to other. what can i do as there is no medicine right now.