SYNOPSIS One hundred and seventy-four patients with a posterior communicating aneurysm were seen over a 21 year period. There was a ratio of four females to one male and women were on average five years older.

Botterell, Lloyd, and Hoffman (I962) suggested that full recovery from a complete third nerve paresis occurred if direct surgical attack on the aneurysm was undertaken within IO days of the onset of the paresis. Two of their patients, who had incomplete palsies preoperatively, recovered fully after the paresis had been present for more than io days. However, Paterson (i968), in 28 cases also treated by direct surgical attack, found that:".... although recovery from the third nerve palsy was complete from a subjective point of view, on testing ocular movements, all patients had some slight impairment of upward gaze in the originally affected eye."

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Objective Mucormycosis is a rapidly progressive and fulminant fungal infection mainly affecting the nose and paranasal sinuses and often requiring aggressive surgical debridement, which commonly includes inferior maxillectomy. Conventional inferior maxillectomy involves removal of the bony hard palate and its mucoperiosteum. This can lead to formation of an oroantral fistula and thereby increase the morbidity in these patients leading to prolonged rehabilitation. Subperiosteal inferior maxillectomy involves sparing of the uninvolved mucoperiosteum of the hard palate. This flap is used for closure of the oroantral fistula, which preserves the functional capabilities of the patient, such as speech, mastication and deglutination. Method This case series describes the experience of using the technique of mucosa-preserving subperiosteal inferior maxillectomy in five patients with mucormycosis. Results With the technique used in this study, complete oronasal separation was achieved in all six patients. The overall surgery time was also decreased when compared with free tissue transfer. Patients also did not have to bear the weight of prosthesis. Conclusion Mucoperiosteal palatal flap-preserving subperiosteal inferior maxillectomy is an excellent approach for all patients with mucormycosis and healthy palatal mucosa.

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