title: Avascular necrosis of the lunate bone (Kienböck's disease) secondary to scapholunate ligament tear as a consequence of trauma - a case study.
abstract: 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 possibly be a factor in some cases. This case presented with multifactorial etiology.
  
  
  METHODS
  In the presented case, a patient with negative ulnar variant had injured her right wrist and presented at an orthopedic clinic due to nonspecific pain 6 months later. An arthro-MRI examination revealed necrosis of the lunate bone, scapholunate ligament tear and coexisting TFCC (triangular fibrocartilage complex) tear.
  
  
  CONCLUSIONS
  Early diagnosis and treatment can prevent progression of necrotic lesions and bone collapse. MRI examination seems to be the key diagnostic method in the early stage of the Kienböck's disease with negative x-ray and CT images. Arthro-MRI examination also allows us to identify the underlying ligamentous injury. In cases of traumatic etiology, an additional CT test enables stating the final diagnosis.
authors: Department of Imaging Diagnostics, Independent Public Clinical Hospital, Otwock, Poland.
authors: Dorota
authors: D
authors: Kulhawik
authors: Department of Imaging Diagnostics, Independent Public Clinical Hospital, Otwock, Poland.
authors: Tomasz
authors: T
authors: Szałaj
authors: Department of Imaging Diagnostics, Independent Public Clinical Hospital, Otwock, Poland.
authors: Monika
authors: M
authors: Grabowska
keywords: Kienböck’s disease; MR/CT arthrography; scapholunate ligament