Definition of "subluxation"

Lateral subluxation of the atlantoaxial joints has also been observed in rheumatoid arthritis patients.

1988, Donald Resnick, Diagnosis of Bone and Joint Disorders

Many diseases and trauma are associated with lens subluxation. Clinical Features. All degrees of subluxation may be seen. Classically, iridodonesis is seen on slit lamp examination with eye movement. Phakodonesis may also be observed.

2001, William Tasman, Edward A. Jaeger, The Wills Eye Hospital Atlas of Clinical Ophthalmology, Lippincott Williams & Wilkins, page 78

Subluxation of a tooth may cause bleeding and mobility of the tooth as a result of injury to the periodontal fibers. Displacement of the tooth is not usually apparent. Approximately 15 % to 20 % of reported trauma cases exhibit [it].

2004, Michael Crocetti, Michael A. Barone, Frank A. Oski, Oski's Essential Pediatrics, Lippincott Williams & Wilkins, page 176