Hand & Wrist Videos: Ligament
- Triangular fibrocartilage complex (TFCC) injuries are increasingly recognized as a cause of ulnar-sided wrist pain. Palmer grouped these tears into either traumatic or degenerative, with various subclassifications. Magnetic resonance imaging (MRI), arthrogram, and arthroscopy are the methods used to establish the diagnosis. Several arthroscopic methods of TFCC repair including outside-in, inside-out, and all-inside techniques have been described. The outside-in repair, which involves piercing the TFCC via the ulnar side of the wrist, has been described by several authors, but the technique varies among authors with respect to instrumentation and subtle surgical modifications.
- Scapholunate ligament (SLL) injury is the most frequent injury of the intrinsic carpal ligaments. The dorsal part of the SLL is the most important part for the stability of the scapholunate joint, and tears of this part and at least one of its secondary capsular attachments cause scapholunate dissociation. The arthroscopic technique most frequently used for acute injuries is reduction and fixation with Kirschner wires, and techniques that involve a primary repair of the injured ligament are performed by open surgery with efficient results.
- Scapholunate (SL) ligament injury is among the most common injuries of the intrinsic ligaments of the carpus. Arthroscopic treatment in complete and nonacute injuries has had poor results. These cases have typically been treated using open surgical techniques that require a broad dorsal approach and produce soft tissue impairment, which leads to reduced wrist mobility. The development of wrist arthroscopy techniques has allowed the treatment of complete and nonacute injuries of the SL ligament, without the disadvantages of open surgery, respecting the soft tissues and avoiding injury of the posterior interosseous nerve, in an attempt to preserve the proprioception of the wrist and the secondary dorsal stabilizers.
- Although typically reported in thumb and small fingers, collateral ligament ruptures of the metacarpophalangeal (MCP) joints have been described in all digits. Traditional open repair requires a dissection that violates the sagittal band and may result in increased scarring and decreased hand function. Arthroscopic repair of MCP collateral ligaments has not been previously described. We present a new technique for repairing MCP collateral ligaments arthroscopically.