Spastic Ataxia 5, Autosomal Recessive, also known as spax5, is related to spastic ataxia 5 and contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a, and has symptoms including ataxia, muscle spasticity and myoclonus. An important gene associated with Spastic Ataxia 5, Autosomal Recessive is AFG3L2 (AFG3 Like Matrix AAA Peptidase Subunit 2). Affiliated tissues include skeletal muscle and cerebellum, and related phenotypes are spasticity and eeg abnormality