Management of a Patient With Ankylosing Spondylitis and Multiple Comorbidities Who Underwent a Percutaneous Nephrolithotomy Using an Innovative Positioning Strategy.

Ankylosing spondylitis (AS) is a chronic inflammatory disorder leading to bony ankylosis, ossification, and fibrosis of the spine. Airway management is difficult in these patients due to restricted head and neck movement as well as a stiff body posture. This also poses challenges in lying down supine as well as surgical positioning. We report a case of a patient with AS and multiple co-morbidities who underwent a percutaneous nephrolithotomy for renal calculi, and the customisations made in anaesthetic and surgical techniques to safely perform the procedure.