aponeurotome
/ˌæpənuːˈroʊtəm/ or /ˌæpəˌnuːroʊˈtoʊm/Definitions
1. noun
A surgical instrument used to cut or separate the aponeurosis, a type of connective tissue that attaches muscles to bones.
“The surgeon carefully used the aponeurotome to separate the aponeurosis and access the underlying muscle.”