Trendelenburg, Friedrich

(redirected from steep Trendelenburg position)

Trendelenburg, Friedrich

Ger. surgeon, 1844–1924.

Trendelenburg gait

A side lurching of the trunk over the stance leg caused by weakness in the gluteus medius muscle.

Trendelenburg limp

An abnormal gait in which the patient transfers his or her weight laterally over the femoral head on the weight-bearing side and then shifts the weight back to a central position as the leg on that side is lifted from the ground. It is caused by weak hip adduction.

Trendelenburg position

A position in which the patient's head is low and the body and legs are on an elevated and inclined plane. This may be accomplished by having the patient lie flat on a bed and then elevating the foot of the bed. In this position, the abdominal organs are pushed up toward the chest by gravity. The foot of the bed may be elevated by resting it on blocks. This position is used in abdominal surgery. It is also usually used in treating shock, but if there is an associated head injury, the head should not be kept lower than the trunk. Synonym: head-down position See: position for illus

reverse Trendelenburg position

A body position in which the trunk and head are elevated above the pelvis and lower extremities.

Trendelenburg sign

A pelvic drop on the side of the elevated leg when the patient stands on one leg and lifts the other. It indicates weakness or instability of the gluteus medius muscle on the stance side.

Trendelenburg test

A test to evaluate the strength of the gluteus medius muscle. The examiner stands behind the patient and observes the pelvis as the patient stands on one leg and then the other. A positive result determines muscle weakness on the standing leg side when the pelvis tilts down on the opposite side.
Medical Dictionary, © 2009 Farlex and Partners


Friedrich, German surgeon, 1844-1924.
Brodie-Trendelenburg test - see under Brodie, Sir Benjamin C
reverse Trendelenburg position - supine position, without flexing or extending, in which the head is higher than the feet.
steep Trendelenburg position
Trendelenburg cannula
Trendelenburg gait
Trendelenburg limp
Trendelenburg lurch
Trendelenburg operation - pulmonary embolectomy.
Trendelenburg position - a supine position on the operating table, used during and after operations in the pelvis or for shock.
Trendelenburg sign - in congenital dislocation of the hip or in hip abductor weakness, the pelvis will sag on the side opposite to the dislocation when the hip and knee of the normal side is flexed.
Trendelenburg symptom - a waddling gait in paresis of the gluteal muscles, as in progressive muscular dystrophy. Synonym(s): Trendelenburg waddle
Trendelenburg tampon
Trendelenburg test - a test of the valves of the leg veins.
Trendelenburg vein ligation
Trendelenburg waddle - Synonym(s): Trendelenburg symptom
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Influence of steep Trendelenburg position and CO2 pneumoperitoneum on cardiovascular, cerebrovascular and respiratory homeostasis during robotic prostatectomy.
During this extended time, surgeons performing the procedure improved their technique and reduced operative times, in turn decreasing patient time in steep Trendelenburg position and possibly affecting patient outcomes and thus study findings.
Of course, one should always consider that vaginal surgery provides a "minimally invasive" approach without the difficulty of ventilating an obese patient in steep Trendelenburg position.
(2,3) Also, pelvic anatomy visualized two-dimensionally under magnification during traditional laparoscopy can look very different than it does during conventional surgery, due to the effects of the pneumoperitoneum, steep Trendelenburg position, and/or the use of uterine manipulators.
When haemodynamically stable conditions were reached, measurements were performed at the following four points: after induction of anaesthesia in the supine position ([T.sub.S]), three minutes after pneumoperitoneum during which time insufflation pressure was set to 20 mmHg ([T.sub.P]), three minutes after the steep Trendelenburg position (35[degrees] which was measured with protractor) was added to pneumoperitoneum during which time insufflation pressure was set to 15 mmHg ([T.sub.P+T]), and three minutes after administration of 500 ml of colloid (Voluven[R]; Fresenius Kabi, Germany) over ten minutes using an infusion pump in the [T.sub.P+T] position ([T.sub.P+T/VL]) (Figure 1).
As for many surgical procedures, laparoscopic gynecological surgery requires specific body positioning in which the patient is placed in a steep Trendelenburg position (25-45 degrees head down).
Patients with increased intracranial pressure or increased intraocular pressure (glaucoma) should not undergo robotic surgery in the steep Trendelenburg position.
I typically use an extra-large vacuum bean bag to keep the patient firmly in place while she is in the moderate to steep Trendelenburg position, but the use of a gel pad placed between the patient and the bed is an alternative approach to keep the patient from sliding cephalad during the surgery.
During gynaecological laparoscopic surgery the combination of pnuemoperitoneum and the steep Trendelenburg position increases the risk of endobronchial intubation by decreasing the distance between the tip of the endotracheal tube (ETT) and the carina (1,2).
A minimum degree of Trendelenburg position can be as effective as a steep Trendelenburg position in achieving adequate surgical exposure, thereby allowing safe completion of hysterectomy without increasing operative time.
To prevent sliding in a steep Trendelenburg position, the patient is placed on an egg-crate mattress, and both the patient and the mattress are taped to the table.