Fig. 132.—Bad apparatus for amputation in the upper third of the forearm. The front of the arm piece is insufficiently cut away.
Fig. 133.—Good apparatus. The arm piece is well cut away, consequently the flesh does not bulge out.
2. Construction of the Joint.—In most cases this is a simple articulation between the steels of the arm and the forearm pieces by two hinge joints.
Fig. 134.—Limb for amputation through the lower third of the forearm, with elbow joint of strong leather.
Fig. 135.—Details of the joint.
The objection to this is that the movements of pronation and supination, if these are present in the stump, are abolished.