Could anyone give me any info about cmt type 1a please?

Charcot-Marie-Tooth: I believe that you are asking about the familial disorder of CMT or charcot-marie-tooth disease. This presents as loss of muscle strength in toes, foot, fingers with malposition of toes, feet, ankles and fingers. This usually is slowly progressive over many years. It can present in childhood but usually is more disabling at adolescence. Bracing and exercises can help, and in some cases surgery.

Nerve problem: Cmt 1a is a demylenating peripheral nerve disease that effects sensory and motor nerves. The variable degree to which the disease effects muscles results in imbalance which often requires surgery to correct.