SACH foot - Solid Ankle Cushion Heel prosthetic foot.
Shoulder disarticulation - amputation at the shoulder joint.
Shrinker - a compression sock specifically for stumps, used to control swelling.
Silicon or gel liner - a type of liner made of a rubbery synthetic material that rolls onto the stump.
Sleeve suspension - for below knee amputees a sleeve rolls over the prosthesis and onto the thigh for suspension.
Socket - a hollow replica of the stump that provides an interface between the body and the prosthesis.
Split hook - a functional steel or aluminium terminal device for the upper extremity prosthesis.
Stump/residual limb - the remaining part of arm or leg following amputation.
Stump sock - a protective sock to be used when wearing a prosthesis. They are made of various materials, the commonest being wool.
Stump pain - pain felt in the stump (residual limb).
Stump volume - size of the stump
Suction socket - a socket that requires no external suspension as it is held in place by total contact adhesion.
Surgeon - a doctor who specialises in operative treatment.
Suspension - a harness or device that holds a prosthesis on.
Supercondylar - above the condyle (which is the widest part of the knee joint).
Symes amputation - amputation through the ankle joint.