Jnl Wrist Surg
DOI: 10.1055/s-0037-1607029
Case Report
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Divergent Axial Carpal Dislocation and Its Pathomechanics

R. E. López-Cervantes
Division of Orthopedics and Trauma Surgery, UMAE “Dr. Victorio de la Fuente Narváez” IMSS, Trauma Hospital, México City, México
,
M. García-Elias
Department of Hand and Upper Limb Surgery, Institut Kaplan, Barcelona, Spain
,
I. Bermúdez Soto
Division of Orthopedics and Trauma Surgery, Department of Upper Limb Surgery UMAE “Dr. Victorio de la Fuente Narváez” IMSS, Trauma Hospital, México City, México
› Author Affiliations
Further Information

Publication History

04 July 2017

17 August 2017

Publication Date:
22 September 2017 (eFirst)

Abstract

Background Axial carpal dislocations and fracture dislocations are 1.4 to 2.08% of all the fractures and dislocations of the wrist. These injuries are caused by high-energy blast or compression mechanisms. Only 11 cases of axial–radial–ulnar (ARU) fracture dislocations have been described in the literature.

Case Description We describe a case with a traumatic transtrapezoid, peritrapezium, transhamate, peripisiform ARU in a patient with acute compartment syndrome, traumatic transverse flexor retinaculum (TFR) rupture, and radial nerve palsy.

Literature Review The ARU fractures are injuries where the carpus is torn into three columns. ARU injuries have a high incidence of neurovascular, soft-tissue cover, and muscular-associated injuries. Depending on the injuries mentioned earlier, a bad functional prognosis can be expected. Nearly without exception, in ARU cases, a traumatic TFR rupture takes place. Garcia-Elias mentioned that the injury pattern is given by the speed, magnitude, and energy entry point.

Clinical Relevance We describe a case of an ARU injury which has not been previously described. In an analysis of the 12 ARU cases previously reported, we observed that when two or more applied forces converge, an ARU injury pattern can occur. That suggests that in ARU injuries, one side of the injury occurs before the other. Due to the extensive carpal damage, in patients with ARU, a restricted range of motion is more likely to happen than residual instability. Thus, in all these cases, an early mobilization and intensive rehabilitation is highly necessary.