Subluxation
Pronunciation: sub-luk-SAY-shun
Partial dislocation where joint surfaces remain in contact but are misaligned from normal position.
Full Definition
Subluxation is a partial joint dislocation characterized by incomplete separation of articular surfaces, with some degree of joint surface contact maintained. Unlike complete dislocation where joint surfaces lose all contact, subluxation represents a spectrum of joint instability where normal anatomical relationships are disrupted but not completely lost. This condition can be acute following trauma or chronic due to ligamentous laxity, muscle weakness, or degenerative changes. In rehabilitation, subluxations require specific management strategies to restore joint stability and prevent progression to complete dislocation.
Usage
Usage note: Distinguish from complete dislocation where joint surfaces have no contact; subluxation maintains partial contact.
In Context
- "The patient experienced recurrent shoulder subluxation during overhead activities." — orthopedic evaluation
- "Treatment focused on strengthening exercises to prevent further episodes of subluxation." — rehabilitation goals