Congenital carpal coalition is an uncommon anomaly that results from an incomplete joint cavitation of the primitive carpus. Congenital carpal coalition between the capitate and hamate is generally believed to be asymptomatic and, thus, is usually discovered on radiographs taken for unrelated reasons. We report two cases of congenital carpal coalition (capitate-hamate) associated with pain of the wrist.
Carpal Bones ; Joints ; Wrist

There are few reports of an isolated dislocation of the pisiform. An isolated dislocation of the pisiform without other injuries involving the carpal bones is particularly uncommon. This type of injury can be neglected in the acute period. We report a case of an isolated dislocation of the pisiform without a carpal bone injury in a young man treated primarily with a closed reduction, pinning and immobilization.
Carpal Bones ; Dislocations* ; Immobilization

A carpal coalition that indicates the fusion of two carpal bones resulting from the failure of differentiation is a rare condition compared to the tarsal coalition. The most common carpal coalition is the luno-triquetral coalition, followed by the capitate-hamate coalition. Most of these coalitions are usually asymptomatic. Thus far, only a few cases of a coalition between the scaphoid and lunate with accompanied anomalies in the ipsilateral hand, such as accessory carpal bone or ray deficiency, have been reported. We present, for the first time, a case of a symptomatic isolated scapho-lunate coalition without any accompanying anomalies.
Carpal Bones ; Hand

The wrist, or carpus, is a deformable anatomic entity composed of 8 small carpal bones (scaphoid, lunate, triquetrum, pisiform, hamate, capitate, trapezium and trapezoid) and the surrounding soft-tissue structures. We should get radiological knowledge of normal wrist in order to identify pathology of that. So we measured the several values on AP, PA and lateral roentgenograms of 228 normal wrist(male : 124 cases, femal: 104 cases). The following results were obtained: 1. Scapholunate gap : 1.4±0.5mm 2. Ulnar variance : 1.3 ±1.7mm, Positive variance … 59.7%, Neutral variance … 25.4% 3. Carpal height ratio : 0.543 ±0.078 4. Carpal ulner distance ratio : 0.32 ±0.04 5. Scapholunate angle : 45.8 ± 8.7° 6. Capitatolunate angle : 19.3 ± 8.2° 7. Radiolunate angle : 8.9 ± 4.7° 8. Ulnar tilt: 23.5 ± 3.3° 9. Volar tilt: 12.0 ± 4.7°
Carpal Bones ; Pathology ; Wrist

The carpal scaphoid is the commonest of the carpal bones to be fractured, and this injury is the commonest to befall the wrist of working man. There is still some disaggrement as to the optimum treatment and as to how long immobilization should be maintained. The twenty seven cases of the carpal scaphoid were treated at department of orthopaedic surgery, Maryknoll Hospital. They were analyzed in regared to the clinical and radiological aspects. The results were summarized as follows. l. Of 27 cases 24 cases were in the age group 20 to 39, and all cases were male patients. 2. In 17 cases, the fracture was found in right side. 3. In 19 cases (70.4%), the fracture was found on the middle 1/3 of the carpal scaphoid and in 18 cases(66.8%), the fracture line was transverse. 4. The union rate of fracture was 100% in the distal 1/3 fracture, 89.5% in the middle 1/3 fracture and 66.3% in the proximal fracture. The average period of immobilization were 10.3, 14.9 and 15.3 weeks respectively. 5. By Maudsley's assessment, the end result was good in all cases of the distal 1/3 fracture, 84.2% in the middle 1/3 fracture and 66.7% in the proximal 1/3 fracture. 6. Traumatic arthritis developed in 3 cases, avascular ncerosis in 7 cases, nonunion in 4 cases.
Arthritis ; Carpal Bones ; Humans ; Immobilization ; Male ; Wrist

Essential osteolysis is a rare, progressive, slow and bone-resorptive disease that mainly involves carpal bone, metacarpal bone, tarsal bone, metatarsal bone and elbow joint. Authors had recently experienced one case of “essential osteolysis” that had involved the bilateral carpal, metacarpal, bilateral tarsal, metatarsal bone, elbow and ankle joint without associated renal insufficiency, hypertension and significant familial history.
Ankle Joint ; Carpal Bones ; Elbow ; Elbow Joint ; Hypertension ; Metatarsal Bones ; Osteolysis, Essential ; Renal Insufficiency ; Tarsal Bones

Although intraosseous ganglion of the carpal bones is an uncommon lesion, it can be a cause of chronic wrist pain. Especially, pathologic fracture as complication of idiopathic intraosseous ganglion of the lunate is extremely rare. We report a rare case of idiopathic intraosseous ganglion with pathologic fracture of the lunate that was successfully treated by curettage and autogenous cancellous bone graft.
Bone Cysts* ; Carpal Bones ; Curettage ; Fractures, Spontaneous* ; Transplants ; Wrist

The wrist joint is a complicated structure composed of many bones and ligaments. Therefore, understanding the anatomy and the biomechanics of the wrist is important in order to administer proper treatment for patients. To easily understand the complicated structure, there were many trials to unite the complicated structure with a simple group such as the carpal row concept and the carpal column concept. Movement and load transfer along the wrist joint occurs with balanced action between carpal bones. To evaluate this static equilibrium, measuring tools such as carpal height ratio are used. When wrist flexion/extension occurs, each carpal row moves synchronously with action of the scaphoid. In contrast with flexion/extension, when wrist radial deviation/ulnar deviation occurs, the proximal carpal row moves in the sagittal plane, instead of the coronal plane. Recently, the dart throwing motion which occurred from the position of dorsiflexion with radial deviation to volar flexion with ulnar deviation is considered the main movement of the wrist joint.
Carpal Bones ; Humans ; Ligaments ; Range of Motion, Articular ; Wrist Joint ; Wrist*

Dorsal perilunar dislocations are rare traumatic entities. Associated fractures such as carpal bones and radial styloid processes can occur. However, the dorsal perilunar dislocation associated with dislocation of distal radioulnar joint is extremely rare. The authors herein report the case of a 34-year-old man who was presented with transscaphoidal perilunar dislocation which is associated with dislocation of distal radioulnar joint.
Adult ; Carpal Bones ; Dislocations* ; Humans ; Joints* ; Lunate Bone ; Scaphoid Bone

PURPOSE: We intend to set up the plan by analyzing the case applying operative treatment for the diagnosis and treatment of the fourth and fifth metacarpal bone base fracture. MATERIALS AND METHODS: Among 15 cases treated operatively from January of 2004 to October of 2009, there were 9 cases being fifth isolated carpometacarpal fracture, 5 cases being the fourth and fifth carpometacarpal comminuted fracture, 2 cases accompanied by hamate body fracture, 10 cases were comminuted fracture of carpal bone or metacarpal bone. RESULTS: The 13 cases of 15 cases which have got operative treatment for the fourth and fifth carpometacarpal fracture were men, average age were 26.3 years old, injury mechanism were direct hit for 9 cases, slip-down for 6 cases. 12 cases were done closed reduction and pinning, 3cases were done open reduction because of comminution or accompanied by hamate fracture. CONCLUSION: Appropriate diagnostic tool such as computed tomography and careful physical examination are essential for good result of the fourth and fifth carpometacarpal fracture treatment.
Carpal Bones ; Fractures, Comminuted ; Humans ; Male ; Physical Examination