3 (4): 372-4. Scaphoid fractures are classified according to the severity of displacement--or how far the pieces of bone have moved out of their normal position: Non-displaced fracture. The fracture may be complicated in the acute phase by neurovascular injury, or in the subacute or chronic phases by nonunion, malunion, infection, osteonecrosis, or osteoarthritis. Introduction. Isolated fracture of the trapezoid bone is due to axial loading on the outstretched palm and extended wrist, transmitted through the second metacarpal bone.... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. simple vs. comminuted) integrity of the coracoclavicular ligments conoid (medial) and trapezoid (lateral) provide primary resistance to superior displacement of the lateral clavicle 2019 Fall;19(3):271-275. doi: 10.31486/toj.18.0157. The proximal surface of the trapezium, in combination with the surface of the trapezoid, forms a slightly concave facet for articulating with the distal surface of the scaphoid [11]. The next common is a Triquetrum fracture. The trapezium articulates with two of the carpal bones, the scaphoid, and the trapezoid as well as with the first metacarpal bone [7].. Trapezoid bone fracture is the least common fracture owing to the fact that it is strictly bounded to scaphoid, capitate and the base of the second metacarpal. This occurred in the same manner that a walnut is broken with nutcrackers. Trapezoid fractures are an uncommon carpal fracture. The trapezium articulates with two of the carpal bones, the scaphoid, and the trapezoid as well as with the first metacarpal bone [7].. The authors report two cases of isolated, undisplaced, fractures of the trapezoid bone. A fracture of the carpal trapezoid bone ; Anatomy. A fracture in the trapezium bone is usually due to a fall with an outstretched hand or an injury to the wrist. Most trapezoid fractures were diagnosed on computed tomographic scan. Any of the carpal bones can break, causing a broken wrist. CT scan of the right wrist showed a nondisplaced proximal comminuted trapezoid bone fracture. This is the most common location for a fracture. Being surrounded by the trapezium, capitate, scaphoid, and the second metacarpal, it is often sheltered from minor blows and injuries. The shape and size of this bone and its location below the thumb cause the integrity of the trapezium to deteriorate over time. Disease Ontology - OBO (Open Biomedical Ontologies) Closed fracture of carpal bone, unspecified; Fracture of carpal bone(s) (2008) HAND. Scaphoid fracture is the most common carpal fracture, occurring predominantly in active men with a peak prevalence in the 2nd to 3rd decades (, 8). 2016 Dec 13;6(4):879. doi: 10.4081/cp.2016.879. Mechanisms of injury have typically been reported as an axial load, with or without forced wrist flexion/extension, that is transmitted from the second metacarpal indirectly to the trapezoid. It has been reported that less than half of cases were improperly diagnosed at initial hospital visit, with the trape-zoid fracture in one patient having been identified only after 99 days [10]. Isolated fractures of this bone are even more rare, with just a few reports in the literature. eCollection 2019. The following list attempts to classify Closed fracture of trapezoid bone [smaller multangular] of wrist into categories where each line is subset of the next. Introduction . Scaphoid fracture as a "puncher's fracture". Horii E, Nakamura R, Watanabe K, Tsunoda K. J Orthop Trauma. This code was replaced … Most trapezoid fractures were diagnosed on computed tomographic scan. On the other hand, trapezoid bone fracture is rare. To our knowledge and based on a literature review, this is the first report of a true isolated trapezoid fracture without accompanying dislocation and without associated metacarpal, carpal, or distal radial fractures.  |  The trapezoid is the least commonly fractured carpal bone, with Sadowski and Montilla, 2008 reporting trapezoid fractures to account for 0.4% of all carpal injuries.  |  The injury is usually the result of high-velocity force pushing the index metacarpal into the trapezoid, causing either a fracture or a fracture-dislocation of the trapezoid. It is often associated with a second metacarpal fracture. Compound Dorsal Dislocation of Lunate with Trapezoid Fracture. Clipboard, Search History, and several other advanced features are temporarily unavailable. Because the trapezoid is fastened to the trapezium, capitate, and scaphoid by strong ligaments, fracture or dislocation is limited by this rigid fixation. They are the Scaphoid, Hamate, Lunate, Trapezium, Trapezoid, Capitate and Pisiform. Displaced fracture. A fracture in the trapezium bone is usually due to a fall with an outstretched hand or an injury to the wrist. Case Presentation . Isolated fractures of the trapezoid bone have been rarely reported in the literature, the mechanism of injury being an axial or bending load transmitted through the second metacarpal. To date, few articles have been published on isolated trapezoid fractures. 2. 814.06 is a legacy non-billable code used to specify a medical diagnosis of closed fracture of trapezoid bone [smaller multangular] of wrist. Rita M. Sadowski, Richard D. Montilla. The trapezoid bone has a very stable position within the wrist, forming a relatively immobile joint with the second metacarpal base distally. The commonest mechanism of injury is a shearing force applied to the first web space by an object held in the hand, for example the … Trapezium Bone Anatomy and Structure Surfaces and Articulation. Trapezoid fractures are uncommon in sports. 2019 Sep 5;2019:7949754. doi: 10.1155/2019/7949754. The trapezoid resides in the distal row of carpal bones, has a keystone shape, and has tight local ligamentous connections 1; Articulates with the trapezium radially, the capitate ulnarly, the scaphoid proximally, and the second metacarpal distally ; fracture or dislocation. Fractures of the trapezium are often associated with other fractures, mainly of the thumb metacarpal and the distal radius. A correct diagnosis was made in 5 cases on initial evaluation. A correct diagnosis was made in 5 cases on initial evaluation. Carpal Bone Fractures. USA.gov. 1994;8(2):107-10. doi: 10.1097/00005131-199404000-00005. 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