Inclusion Criteria:  Will have cryoneurotomy as part of their standard treatment for spastic hip adductors in VGH spasticity multidisciplinary clinic. Are at least 12 years of age at the time of the procedure. Have the ability to attend testing sessions, comply with testing protocols and provide written informed consent. Are able to understand and complete study-related questionnaires (must be able to understand and speak English or have access to an appropriate interpreter as judged by the investigator).  Exclusion Criteria:  Have a history of previous nerve procedures such as chemical neurolysis with alcohol, cryoneurotomy, or any surgery to the obturator nerve. Have any other neurological pathology different from that responsible for the spasticity.