Abstract: A limb supporter apparatus supports a patient's elbow on support pegs that extend under the condyles of the humerus bone for positioning the ulna bone for bone testing. The ulna extends over the humerus and is positioned close to the skin for testing. The wrist is supported in the apparatus of the present invention between two vertical support pegs to secure the wrist in a vertical position and to prevent radial movement of the wrist. This apparatus properly positions the ulna above the humerus and allows for consistent, reproducible results during testing performed on a bone. The elbow and wrist supports extend from horizontal members which are supported by vertical support members. The vertical support members are positioned on a horizontal support member which is pivotally connected to a base member. The base member may be secured to a table by attachment bolts.