page_title: Wrist osteoarthritis
section_title: Types
hierarchical_section_title: Wrist osteoarthritis / Types
caption_attribution_description: English: SLAC (Scapho-Lunate Advanced Collapse)
context_page_description: Wrist osteoarthritis is a group of mechanical abnormalities resulting in joint destruction, which can occur in the wrist. These abnormalities include degeneration of cartilage and hypertrophic bone changes, which can lead to pain, swelling and loss of function. Osteoarthritis of the wrist is one of the most common conditions seen by hand surgeons.
  Osteoarthritis of the wrist can be idiopathic, but it is mostly seen as a post-traumatic condition. There are different types of post-traumatic osteoarthritis. Scapholunate advanced collapse is the most common form, followed by scaphoid non-union advanced collapse. Other post-traumatic causes such as intra-articular fractures of the distal radius or ulna can also lead to wrist osteoarthritis, but are less common.
context_section_description: SLAC and SNAC are two patterns of wrist osteoarthritis, following predictable patterns depending of the type of underlying injury. SLAC is caused by scapholunate ligament rupture, and SNAC is caused by a scaphoid fracture which does not heal and because of that will develop in a non-union fracture. SLAC is more common than SNAC; 55% of the patients with wrist osteoarthritis has a SLAC wrist.
caption: Scapholunate advanced collapse
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