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Review
. 2018 Aug 6:10:41-54.
doi: 10.2147/ORR.S129620. eCollection 2018.

Optimal management of scapholunate ligament injuries

Affiliations
Review

Optimal management of scapholunate ligament injuries

Geoffrey Konopka et al. Orthop Res Rev. .

Abstract

Scapholunate ligament (SLL) injuries are a common cause of wrist pain and instability. Treatment of SLL injuries requires intricate understanding of wrist anatomy and biomechanics. Mindful physical exam and appropriate diagnostic studies can orient the surgeon to the defined stage of injury. Review of the literature on each treatment by stage can prepare the upper extremity surgeon to provide the best evidence-based care. The optimal management of SLL injuries should result in a stable, painless wrist.

Keywords: SLAC wrist; carpal dissociation; carpal instability; scapholunate ligament; wrist instability; wrist trauma.

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Conflict of interest statement

Disclosure The authors report no conflicts of interest in this work.

Figures

Figure 1
Figure 1
Wrist anatomy. Notes: (A) The bones of the wrist: trapezium (1), trapezoid (2), capitate (3), hamate (4), scaphoid (5), lunate (6), triquetrum (7), pisiform (8), radius (9), ulna (10), and the bases of the metacarpals (11). (B) The dorsal wrist ligaments: dorsalcapitohamate (12), dorsal capitotrapezoid (13), dorsal intercarpal ligament (14), radiotriquetral (15), dorsal lunotriquetral (16), dorsal scapholunate (17), and dorsolateralscaphotrapeziotrapezoid (18). (C) The palmar superficial wrist ligaments: transverse carpal ligament (19), radioscaphoid (20), scaphocapitate (21), radioscaphocapitate (22), long radiolunate (23), ulnocapitate (24), and pisohamate (25). (D) The palmar deep wrist ligaments: palmar capitotrapezoid (26), scaphocapitate (27), triquetral-hamate-capitate (28), palmar scapholunate (29), palmar lunotriquetral (30), short radiolunate (31), ulnolunate (32), ulnotriquetral (33), and palmar capitohamate (34).
Figure 2
Figure 2
Uninterrupted “Gilula Lines” 1, 2, and 3 in a wrist with normal alignment.
Figure 3
Figure 3
“Terry Thomas” sign on a wrist PA radiograph showing scapholunate diastasis.
Figure 4
Figure 4
The scapholunate angle is measured on a lateral radiograph of the wrist. Notes: The scaphoid line (S) is drawn tangential to the scaphoid along the palmar aspects of the distal and proximal poles of the bone. The lunate line (L) is drawn perpendicular to a line drawn tangential to the palmar and dorsal points of the lunate. The scapholunate angle is measured between the two lines.

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