Biology:Conjoint tendon
| Conjoint tendon | |
|---|---|
 The interfoveolar ligament, seen from in front. (Inguinal aponeurotic falx labeled at lower left.) | |
| Details | |
| Identifiers | |
| Latin | falx inguinalis, tendo conjunctivus |
| Anatomical terminology | |
The conjoint tendon (previously known as the inguinal aponeurotic falx) is a sheath of connective tissue formed from the lower part of the common aponeurosis of the abdominal internal oblique muscle and the transversus abdominis muscle, joining the muscle to the pelvis. It forms the medial part of the posterior wall of the inguinal canal.
Structure
The conjoint tendon is formed from the lower part of the common aponeurosis of the abdominal internal oblique muscle and the transversus abdominis muscle.[1] It inserts into the pubic crest and the pectineal line immediately behind the superficial inguinal ring.[1] It is usually conjoint with the tendon of the internal oblique muscle, but they may be separate as well. It forms the medial part of the posterior wall of the inguinal canal.[1]
Clinical significance
The conjoint tendon serves to protect what would otherwise be a weak point in the abdominal wall.[1] A weakening of the conjoint tendon can precipitate a direct inguinal hernia.[1][2]
A direct inguinal hernia will protrude through Hesselbach's triangle, whose borders are the rectus abdominis (medially), inferior epigastric artery and inferior epigastric vein (superolaterally), and the inguinal ligament (inferiorly). The hernia lies medial to the inferior epigastric artery.[3] This is in contrast to an indirect inguinal hernia, which will protrude laterally to the inferior epigastric artery and is most commonly due to an embryological defect in the closure of the deep inguinal ring.
History
The conjoint tendon is also known as the inguinal aponeurotic falx, and Henle's ligament.[4]
Additional images
Anterior abdominal wall.Intermediate dissection.Anterior view
See also
- Falx (disambiguation) — other parts of the anatomy with names including "falx"
- interfoveolar ligament
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Jiang, Jay; Koay, Jennifer (2021), "Anatomy, Abdomen and Pelvis, Conjoint Tendon (Inguinal Aponeurotic Falx)", StatPearls (Treasure Island (FL): StatPearls Publishing), PMID 31747179, http://www.ncbi.nlm.nih.gov/books/NBK549772/, retrieved 2021-04-12
- ↑ Relevant Anatomy at University of Connecticut Health Center. Retrieved Jan 2013
- ↑ Clinical Anatomy by Ernest W. April. 3rd Edition. Published by Lippincott Williams & Wilkins, 1997. Pages 326-327.
- ↑ Jiang, Jay; Koay, Jennifer (2021), "Anatomy, Abdomen and Pelvis, Conjoint Tendon (Inguinal Aponeurotic Falx)", StatPearls (Treasure Island (FL): StatPearls Publishing), PMID 31747179, http://www.ncbi.nlm.nih.gov/books/NBK549772/, retrieved 2021-04-12
External links
- Anatomy photo:35:18-0103 at the SUNY Downstate Medical Center - "Anterior Abdominal Wall: Reflection of the Transversus Abdominis Muscle"
- Anatomy image:7531 at the SUNY Downstate Medical Center
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