inguinal triangle

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triangle

 [tri´ang-g'l]
a three-cornered object, figure, or area, such as a delineated area on the surface of the body; called also trigone.
carotid triangle, inferior that between the median line of the neck in front, the sternocleidomastoid muscle, and the anterior belly of the omohyoid muscle.
carotid triangle, superior carotid trigone.
cephalic triangle one on the anteroposterior plane of the skull, between lines from the occiput to the forehead and to the chin, and from the chin to the forehead.
digastric triangle submandibular triangle.
Einthoven's triangle an imaginary equilateral triangle with the heart at its center, formed by the axes of the three bipolar limb leads.
Einthoven's triangle. Bipolar limb leads I, II, and III form Einthoven's triangle. Other standard positions for electrocardiographic leads are the augmented unipolar leads: aVR (right arm), aVL (left arm), and aVF (left leg). From Polaski and Tatro, 1996.
triangle of elbow a triangular area on the front of the elbow, bounded by the brachioradial muscle on the outside and the round pronator muscle inside, with the base toward the humerus.
triangle of election superior carotid triangle.
facial triangle a triangular area whose points are the basion and the alveolar and nasal points.
femoral triangle the area formed superiorly by the inguinal ligament, laterally by the sartorius muscle, and medially by the adductor longus muscle; called also Scarpa's triangle.
infraclavicular triangle that formed by the clavicle above, the upper border of the greater pectoral muscle on the inside, and the anterior border of the deltoid muscle on the outside.
inguinal triangle the triangular area bounded by the inner edge of the sartorius muscle, the inguinal ligament, and the outer edge of the long adductor muscle.
lumbocostoabdominal triangle that lying between the external oblique muscle of the abdomen, the posterior inferior serratus muscle, the erector muscle of the spine, and the internal oblique muscle of the abdomen.
occipital triangle the area bounded by the sternocleidomastoid muscle in front, the trapezius muscle behind, and the omohyoid muscle below.
Scarpa's triangle femoral triangle.
subclavian triangle a triangular area bounded by the clavicle, the sternocleidomastoid muscle, and the omohyoid muscle.
suboccipital triangle that lying between the posterior greater rectus muscle of the head and the superior and inferior oblique muscles of the head.

in·gui·nal tri·an·gle

[TA]
the triangular area in the lower abdominal wall bounded inferiorly by the inguinal ligament (externally) or iliopubic tract (internally), the border of the rectus abdominis medially and the inferior epigastric vessels (lateral umbilical fold) laterally. It is the site of direct inguinal hernia.

inguinal triangle

a triangular area in the lower abdominal wall bounded laterally by the inferior epigastric artery, medially by the rectus abdominis muscle, and inferiorly by the inguinal ligament.

inguinal triangle

(1) Femoral triangle (see there); trigonum femorale [NA6].
(2) Hesselbach's trianglem inguinal trigone; trigonum inguinale [NA6]—A region of the anterior abdominal wall bounded:
• Superolaterally by the inferior epigastric vessels;
• Medially by the lateral margin of the rectus sheath or linea semilunaris; and
• Inferiorly by the inguinal ligament or Poupart ligament.

Pathology
The inguinal triangle is infamous as the region through which inguinal hernias protrude from the abdominal wall, protruding from the depression known as the medial inguinal fossa.

in·gui·nal tri·an·gle

(ing'gwi-năl trī'ang-gĕl) [TA]
The triangular area in the lower abdominal wall bounded by the inguinal ligament below, the border of the rectus abdominis medially, and the inferior epigastric vessels (lateral umbilical fold) laterally. It is the site of direct inguinal hernia.
Synonym(s): trigonum inguinale [TA] , Hesselbach triangle, inguinal trigone.

Hesselbach,

Franz K., German anatomist and surgeon, 1759-1816.
Hesselbach fascia - the part of the superficial fascia of the thigh that covers the saphenous opening. Synonym(s): cribriform fascia
Hesselbach hernia - hernia with diverticula through the cribriform fascia, presenting a lobular outline.
Hesselbach ligament - fibrous or muscular strands extending from the lower border of the transversus muscle to the lacunar ligament and pectineal fascia. Synonym(s): interfoveolar ligament
Hesselbach triangle - the triangular area in the lower abdominal wall bounded by the inguinal ligament, the border of the rectus abdominis, and the inferior epigastric vessels. Synonym(s): inguinal triangle
References in periodicals archive ?
They occur through Hasselbach's triangle, which is anatomically demarcated by the inguinal ligament inferiorly, by the inferior epigastric vessels laterally, and by the rectus abdominus muscle medially (Figure 5).