Anatomical orientation by palpation and marking of anatomical landmarks:
- 1. SSF = Extensor tendon compartment
- 1. CMC joint (saddle joint) = Carpometacarpal joint
- STT joint = Scapho-trapezo-trapezoidal joint
Longitudinal skin incision dorsally over the saddle joint with an arched extension proximally over the 1st SSF. Sharp transection of the subcutis under bipolar coagulation of individual veins.