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...

– should lunate fixation have been performed at the primary operation? Take home message: • Paediatric carpal fractures are rare and are commonly missed and possible underestimated. • No evidence exists on the specific management of paediatric lunate fractures and asymptomatic non-union in these patients. • No long term studies provide the possible sequelae of carpal fracture non-union in child...

The roentgen appearance and pathogenesis of carpal instability are described in an evaluation of patients and cadavers with rheumatoid arthritis and calcium pyrophosphate deposition disease. Dorsiflexion (16%) and palmar flexion (8%) instability occurs in rheumatoid arthritis, particularly in patients with moderate to advanced disease. Navicular-lunate dissociation frequently accompanies dorsif...

Devastating perilunate injuries are rare, compromising of less than 10% of wrist injuries. We report a 19-year-old worker man who presented with left wrist pain and swelling after falling from a height. Not only the lunate was seen in middle third of forearm, but also proximal part of the scaphoid was in distal forearm. Open reduction and internal fixation was done via volar approach. He came b...

Kienböck’s disease or lunatomalacia is an aseptic osteonecrosis of the lunate bone initiating a progressive collapse of the lunate bone, followed by total carpal collapse. The first description was made one hundred years ago (107). Thus far, its exact cause and natural history remain unknown (44). Several extrinsic and intrinsic factors have been investigated as to their role in the aetiology o...

We report a case of a symptomatic unicameral (simple) bone cyst of the lunate in a 42-year- old woman. The lesion was treated with curettage and cancellous autogenous iliac bone grafting. At five years of follow-up the wrist was pain free, there were no limitations of motion, and the radiographs showed complete obliteration of the cavity. To the best of our knowledge, no other unicameral bone c...

Figure 1. Preoperative posteroanterior radiographs showing progressive fragmentation and collapse of the lunate, as well as subsequent pathologic fracture of the scaphoid.