bony ankylosis

Full Definition

A severe form of ankylosis where joint surfaces become completely fused through bony tissue formation, resulting in total elimination of joint movement. In craniofacial surgery, bony ankylosis most commonly affects the temporomandibular joint following trauma, infection, or congenital conditions. Unlike fibrous ankylosis which may allow limited movement, bony ankylosis requires surgical intervention including joint reconstruction, gap arthroplasty, or total joint replacement to restore function and prevent progressive facial deformity.

Usage

Usage note: Distinguished from fibrous ankylosis by complete absence of movement rather than restricted movement.

In Context

• "CT imaging confirmed bony ankylosis of the left temporomandibular joint." — Radiological report
• "Treatment of bony ankylosis required gap arthroplasty with interpositional grafting." — Surgical procedure