Lapidus procedure. Fusion of the first metatarsal and first cuneiform joint and the first and second metatarsal bases with a tenotomy releasing the metatarsal bone; treatment for hallux valgus (bunion).
Laroyenne operation. Puncture of the posterior wall of the vagina to access the Douglas cul-de-sac for evaluation and treatment of infection.
Larrey’s amputation. Amputation at the shoulder joint.
Latarjet procedure. Surgical treatment of recurrent shoulder location by excising and securing the corocoid and its muscle attachments a few centimeters to the anterior shoulder socket.
LeFort I procedure. Treatment of upper jaw malocclusion and cleft palate by separating the maxilla and palate from the skull above the roots of the maxillary teeth and fixing the maxilla in a new position
LeFort II procedure. Treatment of facial malformation by severing the maxilla, nose, and medial aspects of the orbit from the skull and fixing the maxilla and nose in a new position.
LeFort III procedure. Treatment of facial malformation by severing the maxilla, nose, and zygoma from the skull and fixing the maxilla, nose, and zygoma in a new position.
Lembert’s fenestration. Drilling a small window into the semicircular canal and placing a skin flap over the hole to treat otosclerosis.
LeVeen shunt. Shunt surgically implanted into the peritoneal cavity to drain peritoneal fluid into a vein,
usually the internal jugular or superior vena cava.
Limberg flap. Four skin flaps that surround a rhomboidshaped defect; flap angles are 60° and 120°.
Linton procedure. Excision of varicose vessels using an open approach and with subfascial interruption of perforating veins.
Lisfranc operation. Disarticulation of the midfoot between the tarsal and metatarsal bones, with a closure of dorsal and plantar flaps.
Lord’s procedure. (1) Eversion of the tunica vaginalis to reduce hydrocele; (2) dilation of anal muscles to treat hemorrhoids.
Lynch procedure. Sinusotomy performed by entering the frontal sinus through the medial orbit, with the removal of diseased tissue.