Intraosseous ganglion cysts of the carpal bones located in the lunate are one of the rarely seen pathologic conditions. Here we present a case of the penetrating type of intraosseous ganglion cyst located in the lunate as an uncommon cause of wrist pain. The patient was successfully treated by surgical intervention. Intraosseous ganglion cyst should be considered in the differential diagnosis o...

The pathomechanics, ligamentous damage, and degree of carpal instability in perilunate and lunate dislocations were analyzed by experimentally loading 32 cadaver wrists to failure. Thirteen perilunate and two lunate dislocations were produced. The mechanism of injury was extension, ulnar deviation, and intercarpal supination. These dislocations occurred in a sequential fashion due to progressiv...

Unicameral bone cyst of the lunate bone is a rare condition the incidence of which has not been described in literature. We present here a case of a symptomatic lunate cyst in a 40 year old female followed up for two years and operated in view of increase intensity of symptoms and radiological evidence of cortical thinning. The cyst cavity was filled with autologous cancellous bone graft taken ...

Over the past decade, a plethora of new information has been reported regarding etiology, natural history, classification, and treatment options for lunate osteonecrosis. New disease classifications have been described based on advanced imaging determination of lunate viability as well as a cartilage-based arthroscopic classification. Here we review the newest literature regarding Kienböck dise...

Carpal malalignments in malunion of distal radius fracture are considered as an adaptive response of the carpus to loss of normal architecture of the distal radius. This condition leads to mechanical overload, ligament attenuation and progressive dynamic instability around the wrist joint. Radial corrective osteotomy is suggested as a treatment option of carpal malalignment after distal radius ...

We have performed a form of lunate replacement arthroplasty, which included excision of the lunate and insertion of a vascularised radial bone flap wrapped in pronator quadratus, for stage IIIB or stage IV Kienböck's disease, in 41 patients who have been followed up for more than three years. All patients reported an improvement in their symptoms, and 20 of the 41 became free of pain after the ...

UNLABELLED Some variances and anatomical proportions of the wrist may contribute to development of avascular necrosis of the lunate. Kienböck's disease is more often encountered in young males, who suffer, among others, from type II of the lunate (with two joint surfaces for the capitate and hamate) and/or negative variance of ulna in relation to radius. The aim of the study was to investigate ...

Background: Intraosseous ganglions (IOGs) of the lunate bone are a rare cause of chronic wrist pain. Traditional treatment by open curettage and bone grafting can lead to ongoing pain and stiffness of the wrist. Objectives: In this study, an arthroscopically assisted minimally invasive technique of debridement without grafting of the lunate IOG was presented. Patients and Methods: In a prospect...

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...