Jaboulay operation. Creation of an expanded opening between the distal stomach and the duodenum by surgical gastroduodenostomy between the antrum and the stomach and the duodenum; the pylorus is
not incised.
Jaboulay pyloroplasty. Side-to-side gastroduodenostomy; the goal is to increase the diameter of a narrowed or thickened pylorus without incising the pylorus.
Jaboulay–Winkelmann operation. Excision of tunica vaginalis to reduce a hydrocele.
Jantene operation. Arterial switch operation of the aorta and the pulmonary artery; surgical treatment of transposition of the great vessels.
Johansen/Johanson procedure. Two-stage urethroplasty to repair a stenotic or injured male urethra; an indwelling catheter remains while the tissue around it scars to create the lumen.
Jones procedure. Transection of the extensor halluces longus at interphalangeal joint of hallux; it is then rerouted through a hole in the first metatarsal head and sutured back to itself proximally; distal stump is sutured to extensor halluces brevis and interphalangeal joint fusion is performed to prevent hammertoe; performed to release retrograde plantar buckling.
Joplin procedure. Fusion of the proximal phalanx and metatarsal bone with transplant of the extensor tendon to the head of the metatarsal bone; treatment for hallux valgus (bunion).