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Linea semilunaris

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(Redirected from Semilunar line)
Not to be confused with Linea semicircularis.
Linea semilunaris
The obliquus externus abdominis. (Linea semilunaris labeled vertically at center, at border between brown and gray.)
Linea semilunares are at lateral borders of rectus abdominis.
Identifiers
TA98A04.5.01.025
TA22380
FMA19929
Anatomical terminology

The linea semilunaris (also semilunar line or Spigelian line) is a curved line found on either side of the rectus abdominis muscle.

History

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The linea semilunaris was first described by Adriaan van den Spiegel.[1][2][3]

Structure

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There are two commonly used definitions identifying the linea semilunaris.[4][1][5] The first is defined as corresponding with the lateral border of the rectus sheath.[1][6][7][8][9] In this definition, it is formed by the aponeurosis of the internal oblique at its line of division to enclose the rectus.[9][10] This is reinforced anteriorly by the external oblique, and posteriorly by the transversus abdominis above the arcuate line.[11][10][9] The second definition identifies it as the line forming and marking the transition from muscle to aponeurosis in the transversus abdominis muscle, known as the spigelian aponeurosis.[1][12][13][14] In both definitions, it extends from the cartilage of the ninth rib to the pubic tubercle.[4][6][7] The terms spigelian fascia and spigelian aponeurosis have also been used to define the linea semulunaris.[5] In this definition it refers to the aponeuroses of the lateral abdominal muscles lateral to the rectus muscle.[5] In other definitions the spigelian aponeurosis/spigelian fascia is the aponeurosis of the transverse abdominal muscle medial to the linea semilunaris and lateral to the rectus muscle.[15][14]

Clinical significance

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A hernia through the linea semilunaris is called a Spigelian hernia.[16][17] This usually occurs at the meeting point of the linea semilunaris with the arcuate line and the lateral border of the rectus abdominis muscle.[16]

References

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  1. ^ a b c d Vierstraete, Maaike; Pereira Rodriguez, Jose Antonio; Renard, Yohann; Muysoms, Filip (2023-12-22). "EIT Ambivium, Linea Semilunaris, and Fulcrum Abdominalis". Journal of Abdominal Wall Surgery. 2: 12217. doi:10.3389/jaws.2023.12217. ISSN 2813-2092. PMC 10831682. PMID 38312427.
  2. ^ de Moulin, Daniel (1985). "Paul Barbette, M.d: A Seventeenth-Century Amsterdam Author of Best-Selling Textbooks". Bulletin of the History of Medicine. 59 (4): 511. ISSN 0007-5140. . [Paul] Barbette did not in fact explicitly mention the linea semilunaris but described an abdominal hernia 'under and beside the umbilicus, way above the groin.' The linea semilunaris was first described by Adriaan van den Spiegel, De humāni corporis fabrica libri decern (Venice: Ev. Deuchenius, 1627), p. 118. Quoted by Gerrit A. Lindeboom, Adriaan van den Spiegel (Amsterdam: Rodopi, 1978), p. 68. Spiegel made no mention of any hernia.
  3. ^ Van den Spiegel, Adriaan; Van der Linden, Jan Antonides (1645). Adriani Spigelii Bruxellensis Opera quae extant, omnia, ex recensione Ioh. Antonidae Vander Linden. p. 46. Linea semilunaris à Spigelio dicta, circa quam tendines obliquorum abdominis musculorum incipiunt.
  4. ^ a b Bailey, David (1 March 1957). "Spigelian hernia report of five cases and review of the literature". Journal of British Surgery. 44 (187): 502–506. doi:10.1002/bjs.18004418714. In previous reports there appears to be some difference of opinion as to what exactly constitutes Spiegel's line. Watson (1948) defines it as the line which represents the point of division of the internal oblique aponeurosis to enclose the rectus muscle. River (1942) defines it as the line of transition between the muscle bundles and aponeurosis of the transversus. This lies for the greater part at some distance lateral to the edge of the rectus sheath, but the muscle-fibres of the internal oblique extend right up to the edge of the sheath.
  5. ^ a b c Read, Raymond C. (1978). "Spigelian Hernia". In Nyhus, Lloyd M.; Condon, Robert E. (eds.). Hernia (2 ed.). J. B. Lippincott Company. p. 375. ISBN 0397503903.
  6. ^ a b Schwartz, Seymour; Ellis, Harold (1990). Maingot's Abdominal Operations (9 ed.). Appleton & Lange. pp. 269–270. ISBN 9780838561010. The semilunar line that marks the lateral border of the rectus sheath streches from the tip of the ninth rib cage to the pubic tubercle
  7. ^ a b Holder, Lawrence E.; Schneider, Harold J. (August 1974). "Spigelian Hernias: Anatomy and Roentgenographic Manifestations". Radiology. 112 (2): 309–313. doi:10.1148/112.2.309. The linea semilunaris is a curved depression which extends from the tip of the ninth costal cartilage to the symphysis pubis. It marks the lateral edge of the rectus sheath
  8. ^ Ahmed, Abdul (2017-01-01), Brennan, Peter A.; Schliephake, Henning; Ghali, G. E.; Cascarini, Luke (eds.), "37 - Common Free Vascularized Flaps: The Rectus Abdominis", Maxillofacial Surgery (Third Edition), Churchill Livingstone, pp. 533–542, ISBN 978-0-7020-6056-4, retrieved 2021-01-26
  9. ^ a b c Leigh, Watson (1948). Hernia Anatomy, Etiology, Symptoms, Diagnosis, Differential Diagnosis, Prognosis, and Treatment (3 ed.). St. Louis: The C.V. Mosby Company. p. 370.
  10. ^ a b Cunningham, Daniel John (1914). Cunningham's Textbook of Anatomy (4 ed.). New York: William Wood and Company. pp. 482–483.
  11. ^ Reuben, Brian; Vargo, Daniel; Massey, Marga F. (2009-01-01), Evans, Stephen R. T. (ed.), "Chapter 55 - Component Separation for Complex Abdominal Wall Reconstruction and Recurrent Ventral Hernia Repair", Surgical Pitfalls, Philadelphia: W.B. Saunders, pp. 545–569, doi:10.1016/b978-141602951-9.50069-4, ISBN 978-1-4160-2951-9, retrieved 2021-01-26
  12. ^ Fitzgibbons, Robert; Gerson Greenburg, Anleigh (2002). Nyhus and Condon's hernia. Lippincott Williams & Wilkins. p. 405. ISBN 9780781719629.
  13. ^ River, Louis P. (September 1942). "Spigelian Hernia: Spontaneous Lateral Ventral Hernia Through the Semilunar Line". Annals of Surgery. 116 (3): 405. doi:10.1097/00000658-194209000-00012.
  14. ^ a b Skandalakis, Panagiotis N.; Zoras, Odyseas; Skandalakis, John E.; Mirilas, Petros (1 January 2006). "Spigelian Hernia: Surgical Anatomy, Embryology, and Technique of Repair". The American Surgeon. 72 (1): 42–48. doi:10.1177/000313480607200110. We remind the reader that the convex linea semilunaris (semilunar line of Spieghel) is pro- duced by and marks the site of transition from the aponeurotic part to the muscular part of the transverse abdominal muscle.
  15. ^ Smith, C. (2002). Morris, Peter J.; Wood, William C. (eds.). Oxford Textbook of Surgery (2 ed.). Oxford University Press. p. 1879. ISBN 0192628844.
  16. ^ a b Weber, Thomas R. (2010-01-01), Holcomb, George Whitfield; Murphy, J. Patrick; Ostlie, Daniel J. (eds.), "chapter 49 - UMBILICAL AND OTHER ABDOMINAL WALL HERNIAS", Ashcraft's Pediatric Surgery (Fifth Edition), Philadelphia: W.B. Saunders, pp. 637–640, ISBN 978-1-4160-6127-4, retrieved 2021-01-26
  17. ^ Pegoli, Walter; Drugas, George T. (2007-01-01), Garfunkel, Lynn C.; Kaczorowski, Jeffrey M.; Christy, Cynthia (eds.), "Hernias, Abdominal Wall", Pediatric Clinical Advisor (Second Edition), Philadelphia: Mosby, pp. 264–265, ISBN 978-0-323-03506-4, retrieved 2021-01-26
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