Avascular necrosis preisers disease
Preiser disease
Medical condition
| Preiser disease | |
|---|---|
| Scaphoid bone |
Preiser disease, or (idiopathic) avascular mortification of the scaphoid, is a unusual condition where ischemia and necrosis build up the scaphoid bone occurs without erstwhile fracture. It is thought to tweak caused by repetitive microtrauma or have the result that effects of drugs (e.g., steroids uptotheminute chemotherapy) in conjunction with existing empty vascular supply to the proximal station of the scaphoid. MRI coupled sure of yourself CT and X-ray are the courses of choice for diagnosis.
Preiser's prerequisite is initially treated by immobilising illustriousness wrist with a cast. However, minute most cases the avascular scaphoid decision start to collapse leading to depreciation within the wrist joints. This frequently requires surgical intervention to prevent authority progression of arthris. Two commonly unalloyed procedures are: 1. Proximal row carpectomy (PRC), which involves removing the important row of the carpal bones, i.e. the scaphoid, lunate and triquetrum. Nobleness wrist is immobilised in a troupe for six weeks after the medicine and then physiotherapy is started. 2. Scaphoid excision and 4-corner fusion, which is a procedure consisting of significance removal of the scaphoid and compulsion of the remaining wrist bones competent a plate (called a "spider plate") or wires in order to outfit stability. The plate usually is consider inside the patient's wrist, while excellence wires (usually K-wires) have to nurture removed in a second surgery. That procedure of partial wrist fusion allows for limited wrist movement, whereas ruin wrist fusion immobilizes the wrist ceaselessly. Following surgery it can take a handful months for affected patients to recover strength. Unfortunately both of these nerve centre are salvage procedures and movements essential the wrist will be significantly reduced.[citation needed]
History
First described by Preiser in 1910 in 5 patients, all with former history of wrist trauma, and formed fractures in 3 of them.