Dislocation of the hamate and its possible mechanism

Wang, L.; Xiong, Ge; Dai, Lei

doi:10.1177/1753193412460629

Cited by 6 publications

(12 citation statements)

References 3 publications

(2 reference statements)

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“…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).…”

Section: Discussionmentioning

confidence: 99%

“…If any doubt exists, a CT-scan should be performed because it shows more easily the dislocation of the hamate and allows an assessment of the associated lesions. 3…”

Section: Discussionmentioning

confidence: 99%

“…If any doubt exists, a CT-scan should be performed because it shows more easily the dislocation of the hamate and allows an assessment of the associated lesions. 3 The mechanism of dislocation is poorly described and subject to controversy. Garcia-Elias et al 10 described a zone of weakness between the hamate and capitate that was prone to rupture in posteroanterior crush injuries of the carpus (►Fig.…”

Section: Discussionmentioning

confidence: 99%

“…This rarity makes their diagnosis difficult or sometimes missed, and their management non-standardized. 2,3 Here, we report a case of isolated palmar dislocation fracture of the hamate in the context of polytrauma, and provide the different lesion mechanisms and treatments available in the literature. The initial clinical examination, performed by an orthopaedic surgery resident, focused on major trauma to both elbows and no particular symptoms were noted in the right wrist, despite a normal cognitive state (Glasgow 15).…”

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confidence: 99%

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

et al. 2023

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Objective Hamate dislocations are rare lesions of the carpus, which make their diagnosis difficult or even missed, and their management non-standardized. Case Description We report the case of a 34-year-old victim of a high kinetic traffic accident. The initial evaluation revealed multiple fractures of both upper limbs, including a palmar fracture dislocation fracture of the hamate, without any vascular or nerve complications. Open surgical treatment via a dorsal approach allowed reduction and fixation of the hamate by temporary multiple pinning. At 12-month follow-up the patient had pain free motion of the wrist with a DASH score of 3. Radiographs showed evidence of proximal pole hamate sclerosis and carpo-metacarpal narrowing. Literature Review Owing to its rarity, literature on this topic is extremity limited. Various mechanisms have been described to explain these injuries, including dorsal pressure on the carpus associated with traction of the annular carpal ligament on its hamate insertion. Symptoms can be minimal and only three cases of nerve complications have been reported. Long-term outcomes following these injuries usually result in decrease in wrist motion and grip strength. Clinical Relevance The rarity of dislocations with or without hamate fracture favors the absence or the delay of diagnosis, which must lead to a precise radiographic analysis and to the implementation of a CT scan in case of high kinetics carpal trauma, even if it is poorly symptomatic. Level of Evidence Level 5, case study.

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Section: Discussionmentioning

confidence: 99%

“…If any doubt exists, a CT-scan should be performed because it shows more easily the dislocation of the hamate and allows an assessment of the associated lesions. 3…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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

et al. 2023

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“…Combined with the integrity of the transverse carpal ligament (TCL), if the TCL is torn, the hamate bone may be dislocated to the dorsal side. If the TCL remains intact, the hamate bone may be pulled to the volar side (12). Using direct compression force that is sufficient enough to cause complete dislocation of the hamate bone, we should be vigilant about the possibility of hand tendon compartment syndrome (2,13).…”

Section: Discussionmentioning

confidence: 99%

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

Wang¹,

Wei²,

Zhang³

et al. 2022

Ann Transl Med

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Classification of Hamate Fractures: An Analysis of 247 Patients with Hamate Fractures

XIONG,

ZHENG

2024

J Hand Surg Asian-Pac Vol

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Background: We devised a new classification of hamate fractures named the TOUCH classification. Each letter of this acronym depicts a fracture type – Type I (Transverse fracture), Type II (Open and/or complex fracture), Type III (Ulnar/medial tuberosity fracture), Type IV (Coronal fracture) and Type V (Hook fracture). Each fracture type was further divided into two or three subtypes (a, b, and/or c) based on degree of severity. The aim of this study is to classify the hamate fractures treated at our centre using this classification. Methods: A retrospective review of all patients with hamate fractures treated at our hospital between 2003 and 2022 was done. Patient data with regard to age, gender, mechanism of injury, injured limb and any associated injuries was collected. Hamate fractures were classified based on the TOUCH classification. Results: A total of 247 patients with hamate fractures were included. Patients in the age group of 20–40 years accounted for 73.6% of all fractures. Female patients accounted for only 6.9% of all fractures and 76.5% of women with hamate fractures were older than 40 years. The incidence of hamate fracture tended to increase with age in women. The most common mechanism of injury was a fall (69 patients). The injury involved the right upper limb in 195 patients. And 164 patients had associated injuries in the same upper limb. Type III (coronal fracture of the hamate body) accounted for 57.4%, followed by type V (hook of hamate fracture) in 26.7% of patients. Conclusions: The TOUCH classification could cover all kinds of hamate fractures. It is easy to remember and may guide surgeons in considering treatment options. Level of Evidence: Level IV (Diagnostic)

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Dislocation of the hamate and its possible mechanism

Cited by 6 publications

References 3 publications

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

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

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

Classification of Hamate Fractures: An Analysis of 247 Patients with Hamate Fractures

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