We report a 15-year-old girl who underwent a mid-carpal fusion for undiagnosed impaction-fractures of the capitate, lunate, and triquetrum after a fall on her outstretched left hand in a dorsiflexed and radially deviated position. The joint was dis-impacted, and the height of the lunate was restored using a cortical bone graft. The damaged proximal capitate articular surface was decorticated to...

A 30-year old male right handed professional tennis player complained about reduced athletic performance, chronic pain and restricted extension of his right wrist. Lateral radiograph of the right wrist demonstrated an osteophyte projecting from the dorsal lip of the lunate bone. The presence of an osteophyte on the lateral radiograph of the lunate along with the history, clinical examination, i...

PURPOSE Kienböck disease is characterized by avascular necrosis of the lunate bone, which is usually progressive without treatment. This study examined lunate core decompression for its treatment potential. METHODS We surgically treated 20 patients with stage 1 to 3b Kienböck disease with lunate core decompression. We evaluated pain, range of motion, functional disability, and radiographic in...

BACKGROUND Avascular necrosis of the lunate bone (Kienböck's disease), is a condition in which lunate bone, loses its blood supply, leading to necrosis of the bone. There is probably no single cause of Kienbock's disease. Its origin may involve multiple factors, such as the blood supply (arteries), blood drainage (veins), and skeletal variations. Trauma, either isolated or repeated, may possibl...

The radiographic files of 70 patients with Kienbock's disease were analyzed. Ulnar variance, carpal height and Kienbick stage were determined. A significant difference in ulnar variance was seen between early and late stages of the disease. In later stages there is a marked negative ulnar variance, not caused by bone apposition on the radius. We hypothesize that negative ulnar variance encourag...

Diagnosing of injuries of the wrist bones is problematic due to a highly complex and variable geometry. knowledge of variations of healthy bone shapes is essential to detect wrist pathologies, developing prosthetics and investigating biomechanical properties of the wrist joint. In previous literature various methods have been proposed to classify different scaphoid and lunate types. These class...

An osteoid osteoma is a rare benign tumor of the carpal bones. It is extremely rarely found in the lunate bone in patients above 30 years of age. We present a case report of a 61-year-old man with an osteoid osteoma of the left wrist, which was masked by degenerative carpal bone disease and a comorbidity of an inflammatory bowel disease. The mainstay of imaging including plain radiographs, comp...

Lunate fractures are rare and usually occur together with other fractures, dislocations, or ligament disruptions. We want to report an acute fresh isolated lunate fracture without additional ligamentous injury fixated early surgical intervention. A 23-year-old right-hand-dominated male patient was admitted our hospital after falling from 1.5-meter ladder over right hand’s palmar face. Standard ...

Receptive field properties of cells deep in the posterior bank of lunate sulcus and on the annectant gyrus (V3) were studied in the awake, fixating monkey. Properties of these cells were compared with those of a population of cells recorded in V2. Receptive fields of cells in V3 were larger than fields of V2 cells at comparable eccentricities. Cells were classified according to their sensitivit...