Floor Shortening Of The Scaphoid Bone

Two cases of painful posttraumatic scaphoid malunion hump back deformity associated with dorsal intercalated segmental instability deformity and lim.

Floor shortening of the scaphoid bone. The lunate is triangular in shape outlined area as it has slipped into a dorsal intercalated segment instability disi position. Thus it is essential to identify this finding on. The scaphoid bone is one of the carpal bones of the wrist it is situated between the hand and forearm on the thumb side of the wrist also called the lateral or radial side. There is shortening of the scaphoid on the pa view with an obvious cyst fig.

A long bone fracture in a child can have devastating consequences in terms of the child s skeletal maturity and potential for limb shortening and malformation when the facture line involves the. Your wrist is made up of eight small bones carpal bones plus two long bones in your forearm the radius and the ulna. 80 of it is covered with cartilage. Scaphoid fractures that do not heal are referred to as a scaphoid non union.

The scaphoid pa axial view is part of a four view series of the scaphoid wrist and surrounding carpal bones. Scapholunate dissociation also known as rotary subluxation of the scaphoid refers to an abnormal orientation of the scaphoid relative to the lunate and implies severe injury to the scapholunate interosseous ligament and other stabilizing ligaments. The scaphoid is shaped like a twisted peanut and is only about 1 inch long or a little shorter. Carpal dissociation implies carpal instability which has important clinical implications.

The most commonly injured carpal bone is the scaphoid bone located near the base of your thumb. It forms the radial border of the carpal tunnel the scaphoid bone is the largest bone of the proximal row of wrist bones its long axis being from above downward lateralward and forward. Indications the scaphoid pa axial view aims to show the scaphoid in its true a. Vascularized bone grafts are used for proximal pole nonunions and occasionally for scaphoid waist fractures with osteonecrosis or when traditional bone grafting has failed to achieve union.

Figure 1 shows radiographs of a scaphoid waist fracture with delayed union. If you press with your finger deep into the floor of the anatomic snuffbox you can barely feel the scaphoid. Once significant radiocarpal or intercarpal arthrosis has developed because of a scaphoid nonunion it is difficult to decide which treatment to adopt. The scaphoid bone is vulnerable to fracture because of its position within the wrist and its role in wrist function.

The lunate is a small bone in the center of the wrist right next to the scaphoid.