Gap Arthroplasty: Surgical Modality of TMJ Ankylosis

  • Shishir Dhar Assistant Professor, Department of Dentistry/Oral & Maxillofacial Surgery, Government Medical College, Saharanpur, UP. India.
  • Shubhamoy Mondal Reader, Department of Oral & Maxillofacial Surgery, Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, UP, India.
  • Sumit Verma Reader, Department of Oral & Maxillofacial Surgery, Awadh Dental College & Hospital, Jamshedpur, Jharkhand, India.
  • Anshul Sawhney Assistant Professor, Department of Dentistry, Autonomous State Medical College, Bahraich, UP, India.
Keywords: Gap Arthroplasty, TMJ Ankylosis, Pre Auricular, Al Kayat Bramley, Coronoidectomy.


This report describes surgical management of a 13-year-old female with unilateral TMJ (true) bony ankylosis with restricted IIO of 2mm, mandibular retrognathism, difficulty in speech, eating & breathing, along low self-confidence. Unilateral gap arthroplasty through a preauricular approach with ipsilateral coronoidectomy was done followed by aggressive jaw physiotherapy. Post surgically oral prophylaxis, restoration, extraction of carious teeth along speech therapy & psychological counselling were also done to enhance function & boost self-esteem & confidence ultimately resulting in good mouth opening, removing impaired functions & psychological stigma.