Soft tissue ganglion cysts are the most common benign tumours of the wrist; their pathogenesis remains controversial. We prospectively screened the radiographic appearance of the wrists of 51 patients presenting to a single surgeon with dorsal wrist ganglions during a one-year period. Postero-anterior and lateral radiographs were systematically performed looking for possible associated intraoss...

The brain of Homo floresiensis was assessed by comparing a virtual endocast from the type specimen (LB1) with endocasts from great apes, Homo erectus, Homo sapiens, a human pygmy, a human microcephalic, specimen number Sts 5 (Australopithecus africanus), and specimen number WT 17000 (Paranthropus aethiopicus). Morphometric, allometric, and shape data indicate that LB1 is not a microcephalic or ...

BACKGROUND Four-corner fusion is an effective procedure to treat advanced degenerative osteoarthritis of scaphoid nonunion advanced collapse or scapho-lunate advanced collapse wrists. However, lunocapitate fusion, an alternative procedure, shows benefits including less dissection of the soft tissue and also a shorter operation time. We reviewed 10 cases to reveal the complication rates and clin...

A few numbers of patients admitted to the emergency department due to the lunate dislocation can cause a direct injury to the wrist ligament, which mainly occurs after wrist trauma, and often diagnosis is far from the mind. A 32 years old man due to severe pain and tenderness of the wrist started the previous day during swimming, referred to Emergency Department of Imam Reza Hospital of Mashhad...

A young 22-year-old male presented with complaints of pain, tingling, and numbness over his right wrist for 1 year had a history falls on outstretched hand. Radiological evaluations such as X-rays were done, which showed break in the proximal carpal arc. An MRI affected was done. findings are suggestive avascular necrosis lunate along dislocation marrow edema/contusion lunate. Complete disrupti...

Background. Instability of the wrist, leading to the appearance of a fissure between the scaphoid and lunate bones (SLD), is generally attributed to damage of the scapholunate ligaments (SLIL). However, repair of the SLIL does not give a good outcome. SLD recurs in many cases, despite correct reconstruction. The structures of the joint may be exposed to further overloading and damage, with all ...

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...

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...

Transecting the transverse carpal ligament (TCL) is a routine procedure to surgically treat carpal tunnel syndrome; yet, its mechanical consequences on carpal bones are unclear. In this study, our intent was to perform a computational analysis of carpal biomechanics resulting from TCL release. A three-dimensional finite element model of the wrist was constructed, which included all the carpal b...