Unknown prevalence. Acquired form: post-resection of the mandible status without reconstruction. Congenital form: association of major retrognathia with small mouth opening and temporomandibular ankylosis. Unlike Franceschetti syndrome (see this term), there are no abnormalities of the ears or  the zygomatic arches.

Anesthetic implications:

risk of obstructive sleep apnea; difficult mask ventilation and intubation; keep a spontaneous breathing to perform a fibroscopic intubation with a nasopharyngeal airway for oxygenation and possible administration of a halogenated agent; careful extubation

References :

-        Aziz SR.
Andy Gump and his deformity.
J Oral Maxillofac Surg 2010;68:6513.

-         Lilly GL, Petrisor D, Wax MK.
Mandibular rehabilitation: From the Andy Gump deformity to jawinaday.
Laryngoscope Investig Otolaryngol 2021;6:70820.

-        Chhabra S, Sharma L, Mohammed S, Rathod D.
Anaesthetic challenges in staged correction of Andy Gump deformity in a young girl with severe obstructive sleep apnoea.
Indian J Anaesth 2022 ; 66 :386-7

Updated: October 2022