Types of Condylar Hypoplasia - Congenital (primary) - Acquired (secondary)

Congenital Condylar Hypoplasia (Primary) - Small condyle present in one or both sides of the lower jaw - Usually associated with systemic diseases such as Hemifacial microsomia, Mandibulofacial Dysostosis, Goldenhar syndrome, Hurler syndrome, Proteus syndrome, and Morquio syndrome

Acquired Condylar Hypoplasia (Secondary) - Occurs due to injury or infection during growth - Traumatic injuries can lead to stoppage of condyle growth - Infections related to the ear and childhood rheumatoid arthritis are known causes - Parathyroid hormone deficiency can also cause acquired condylar hypoplasia

Presentation of Condylar Hypoplasia - Small mandible - Symmetry in the lower jaw - Increased overjet - Limited opening of the mouth depending on the presence or absence of the condyle

Treatment of Condylar Hypoplasia - Requires a multi-team approach involving an oral surgeon, orthodontist, and plastic surgeon - Involves bone grafting from the patient's own body to the lower jaw - Costochondral bone graft has been successfully used - Lengthening of the graft through distraction osteogenesis - Orthognathic surgery may be performed after the growth spurt is complete