The authors present a case of os hamuli proprium, a congenital anomaly of the hook of the hamate. A unilateral presentation of this anomaly is rare--this is the first to be reported in the literature. The lesion could easily be mistaken for a fracture of the hook of the hamate. Radiologists and orthopaedists should be aware of the possibility of such a misdiagnosis.
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J Hand Surg Asian Pac Vol
January 2025
Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan.
Surgeons use anatomical landmarks like the scaphoid tubercle, pisiform, trapezial tubercle and hook of hamate, along with Kaplan cardinal line (KCL) to avoid injury to the recurrent motor branch (RMB) of the median nerve during carpal tunnel release. The presence of transverse muscle fibres (TMF) overlying the transverse carpal ligament (TCL) may suggest proximity of the RMB, but their anatomical relationship is unclear. In this study, we evaluated the accuracy of anatomical landmarks to the RMB, TMF origin and insertion, and examined the relationship between TMF presence and RMB running patterns.
View Article and Find Full Text PDFJ Vasc Bras
December 2024
Universidade Federal do Ceará - UFC, Hospital Universitário Walter Cantídio - HUWC, Fortaleza, CE, Brasil.
Ulnar artery aneurysms are extremely rare and are mainly associated with hypothenar hammer syndrome, an ischemic disorder of the hand resulting from mechanical and repetitive trauma to the hypothenar region. The ulnar artery is hit against the hook of the hamate bone, causing damage to the vessel wall and leading to occlusion or formation of an aneurysm. We describe the case of a truck driver who underwent resection of an ulnar artery aneurysm in the right hand and reconstruction using end-to-end anastomosis with no complications or recurrence.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
This study aimed to investigate the diagnostic and evaluative significance of combining median nerve (MN) morphological measurements with diffusion tensor imaging (DTI) and T2 mapping metrics for carpal tunnel syndrome (CTS). Morphological and multiparametric magnetic resonance neurography (MRN), along with clinical evaluation, were conducted on 33 CTS patients and 32 healthy controls. The MRN metrics included fractional anisotropy (FA), apparent diffusion coefficient (ADC), axial diffusivity (AD), radial diffusivity (RD), T2 value, cross-sectional area (CSA) and MN flattening ratio (MNFR) at both the pisiform bone and hamate bone levels.
View Article and Find Full Text PDFJt Dis Relat Surg
January 2025
Sağlık Bilimleri Üniversitesi Ümraniye Eğitim ve Araştırma Hastanesi Ortopedi ve Travmatoloji Kliniği, 34764 Ümraniye, İstanbul, Türkiye.
Objectives: In this study, we present our extensive case series on hamatometacarpal fracture-dislocations treated with open reduction and internal fixation and share our treatment strategies and outcomes.
Patients And Methods: Between March 2014 and November 2022, a total of 17 male patients (mean age: 28.6±7.
Background: Understanding peripheral ulnar nerve anatomy is necessary to refine surgical treatment of ulnar nerve injuries. This study topographically mapped the ulnar nerve and its distal branch points from a well-defined surgical landmark and assessed for variations in interfascicular motor arrangement and branch size.
Methods: Fifty-four cadaveric upper extremities were dissected to expose the distal ulnar nerve and its branches (dorsal cutaneous (DCB), volar sensory (VSB), and motor branches).
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