Professional
Technical
In the Industry Vocabulary Test
Ankylosis
Pronunciation: an-ki-LOH-sis
Abnormal fusion of joint surfaces resulting in restricted or absent joint movement.
Full Definition
Ankylosis refers to the abnormal fusion of joint surfaces, resulting in partial or complete loss of joint mobility. In oral and maxillofacial surgery, temporomandibular joint ankylosis is a serious condition that can occur following trauma, infection, or surgical complications. The condition may involve fibrous ankylosis (tissue adhesions) or bony ankylosis (bone fusion), with the latter being more severe and requiring complex surgical reconstruction.
Usage
Usage note: Specify type (fibrous or bony) and location when documenting.
In Context
- "CT imaging revealed complete bony ankylosis of the temporomandibular joint." — Radiological report
- "Gap arthroplasty was performed to address the fibrous ankylosis and restore jaw function." — Surgical procedure note
Also known as
joint fusion
TMJ ankylosis
Contrasted with
hypermobility
joint laxity
Don't confuse with
trismus
muscle contracture
joint stiffness