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A scaphoid fracture is a break of the scaphoid bone in the wrist. [1] Symptoms generally includes pain at the base of the thumb which is worse with use of the hand. [ 2 ] The anatomic snuffbox is generally tender and swelling may occur. [ 2 ]
Because SLAC results from scapholunate ligament rupture, there is a larger space between the two bones, also known as the Terry Thomas sign. [10] Scaphoid instability due to the ligament rupture can be stactic or dynamic. [11] When the X-ray is diagnostic and there is a convincing Terry Thomas sign it is a static scaphoid instability.
The main symptom is pain, particularly with gripping and pinching. [7] [8] This pain is often described as weakness, but true weakness is not a part of this disease. People may also note a change in shape of the thumb. [7] [8] Some people choose surgery, but most people find they can accommodate trapeziometacarpal arthritis. [9] [10] [11]
This causes sharp fragments of bone to float between the joints, causing excruciating pain. At this point, the lunate is ready for removal. The most frequently performed surgery is the Proximal Row Carpectomy, where the lunate, scaphoid and triquetrum are extracted. This greatly limits the range of motion of the wrist, but pain relief can be ...
Blood enters the scaphoid distally. Consequently, in the event of a fracture the proximal segment of the scaphoid will be devoid of a vascular supply, and will—if action is not taken—avascularly necrose within a sufferer's snuffbox. Due to the small size of the scaphoid and its shape, it is difficult to determine, early on, whether or not ...
Avascular necrosis (AVN), also called osteonecrosis or bone infarction, is death of bone tissue due to interruption of the blood supply. [1] Early on, there may be no symptoms. [1] Gradually joint pain may develop, which may limit the person's ability to move. [1] Complications may include collapse of the bone or nearby joint surface. [1]
The scapholunate ligament is an intraarticular ligament binding the scaphoid and lunate bones of the wrist together. It is divided into three areas, dorsal, proximal and palmar, with the dorsal segment being the strongest part. [3] It is the main stabilizer of the scaphoid. In contrast to the scapholunate ligament, the lunotriquetral ligament ...
The Herbert classification is a system of categorizing scaphoid fractures. [1] Classification. Type Description A ... Fracture dislocation B5 Comminuted fracture: C