Review of the Literature and Case Report of Surgical Treatment of a Neglected Dislocation of Hamate

Abstract

Introduction: Hamate dislocation is an uncommon injury, and there are only 17 reported cases in the literature. Ten of them are isolated injuries, and in 7 cases the hamate dislocation is a part of other injuries of the hand. Hamate dislocation can be caused by both direct and indirect forces, or as a part of complex injury of the wrist and hand. Case Report: A case report of a 26-year-old man who presented with a machine injury to his hand with a volar hamate dislocation which was initially missed in the Emergency department as a volar lacerated wound of the hand and was subsequently discovered in the Orthopaedic clinic 6 weeks later. Conclusion: This is only the second report in literature of a neglected hamate dislocation being surgically treated and the 18th reported case of a hamate dislocation over the last 130 years. The direction of dislocation depends on the direction of force applied. Surgical treatment with fixation is optimal even for neglected cases. There was no incidence of avascular necrosis of hamate reported, reflecting the almost equal volar and dorsal blood supply of the hamate.

Palmar Dislocation Fracture of the Hamate: A Case Report and Review of Literature

“…It is a rare lesion, often unrecognized, which can go undetected. 3,8 If dorsal dislocations cause a significant deformity by subcutaneous protrusion of the hamate, the symptoms of palmar dislocations are more frustrated and are often limited to an edema and a more moderate wrist pain. 3 Surprisingly, only three cases were associated with nerve compression (one isolated ulnar palsy, one isolated median palsy, and one combined medial-ulnar palsy).…”

“…Various therapeutic techniques have been described in the literature, 4,8 including closed reduction (with or without pinning), hamate excision, and open reduction and internal fixation by pinning. The latter was chosen in order to obtain optimal reduction and stabilization, particularly between the two rows of the carpus and the carpometacarpal joint.…”

Volar Perilunate Carpal Fracture Dislocation: A Case Report of Uncommon Injury Pattern

“…Also the triquetral fractures and dislocations rarely occur in isolation, and 12% to 25% of triquetral injuries are the result of a PFD pattern [16][17][18][19][20] . Volar hamate dislocations are exceedingly rare that can be easily missed, and also are a part of complex wrist injuries, and surgical management by open reduction even in neglected cases gives good results [20][21][22] . A considerable proportion of perilunate carpal injuries are frequently missed and often difficult to diagnose, that may not be obvious on the plain X-ray film because of the complex bony architecture, so most of the authors recommend CT scans or MR imaging to assess and diagnose these specific injuries [1][2][3][4][5][6][7] .…”

Isolated complete dislocation of hamate bone with an ulnar nerve injury: a case report and literature review

“…Carpal dislocation is a serious injury that may affect the stability of the wrist joint and lead to functional disability of the wrist. Complete dislocation of the hamate bone is very rare (1,2). In our routine work, we encountered a case of isolated complete dislocation of the hamate bone with an ulnar nerve injury.…”