Type of Article:  Original Research

Volume 8; Issue 3.1 (July 2020)

Page No.: 7604-7608

DOI: https://dx.doi.org/10.16965/ijar.2020.172


Mallikarjun M, Raveendra Patil GT, Solomon Krupanidhi U.

1 Professor and Head, Department of Anatomy, Vijayanagar institute of medical sciences (VIMS), Bellary, Karnataka, India.

*2 Associate professor, Department of Anatomy, Vijayanagar institute of medical sciences (VIMS), Bellary, Karnataka, India.

3 Professor, Department of Anatomy, Vijayanagar institute of medical sciences (VIMS), Bellary, Karnataka, India.

Corresponding Author: Dr. Raveendra Patil GT, Associate professor, Department of Anatomy, Vijayanagar institute of medical sciences (VIMS), Bellary, Karnataka, India.

Mobile: +919742666674 E-Mail: drravi2201@gmail.com


Background: A thin bony plate present between coronoid fossa and olecranon fossa of humerus bone sometimes perforated to form a foramen named as supratrochlear foramen (STF) or septal aperture. This was first described by Meckel in 1825. According to Hirsh (1927) thin plate of bone between coronoid & olecranon fossa is always present until the age of 7 years after which the bony septum occasionally becomes absorbed to form STF. It has been described in hyena, dog, cattle and other primates. STF in the distal end of the humerus is associated with narrow intramedullary canal (IMC). During radiological evaluations of the humerus, the presence of STF may result in erroneous interpretation as osteolytic lesion or cystic lesion. Previous studies on the Indian population have the varying incidences from 19.2% to 34.4%.

Aims and Objectives: The present study was done 1) to know the proportion of STF and 2) to know the various types (shapes) of supratrochlear foramen in adult humerus bones.

Material and Methods: The study was done on 200 (100 Right &100 Left) adult dry humerus bones of both sexes collected over a period of 3 years from the department of Anatomy, Vijayanagar institute of medical sciences (VIMS), Bellary, Karnataka. Study of various types (shapes) of supratrochlear foramen was done by naked eye observation. Opacity and Translucency of septum were observed by placing its lower end against X- ray lobby. The data obtained was tabulated and statistically analysed.

Results: STF was observed in 64(32%) humeri and was classified into various types. Out of 64 humeri having STF the commonest shape was oval 28(43.75%), followed by rectangular 12(18.75%), triangular 8(12.5%), sieve like 6(9.35%), round 5(7.81%) and reniform 3(4.68%). We found 2(3.12%) left humeri with multiple sieve like foramen in coronoid olecranon aperature and also in radial fossa. Opaque septum was observed in 79 (39.5%) humeri and translucent septum in 57 (28.5%) humeri.        

Conclusion: Supratrochlear foramen is a common anatomical variation in lower end of humerus bone with significant surgical implication. Proper identification of this anomaly on preoperative radiographs should alert the surgeon while insertion of intramedullary nailing for treatment of supracondylar fractures of humerus. The presence of supratrochlear foramen is also important for radiologists and orthopedicians for proper interpretation of X-rays, since they are radiolucent and are easily mistaken for osteolytic and cystic lesions.

Key words: Supratrochlear foramen, Supracondylar fracture, Intramedullary nailing Osteolytic lesion, Anthropology.


  1. Meckel JH, Kate BR, Dubey PN. A note on septal apertures in the humerus of central Indians. E anthropol. 1970;33:270-84.
  2. Hirsh SI, Morton SH, Crysler WE. Osteochondritis dessicans of the supratrochlear septum. J Bone Joint Surg. 1945;27-A:12-24.
  3. Haziroglu RM, Ozer M. A supratrochlear foramen the humerus of cattle. .Anat Histol Embryol. 1990;19:106-8. https://doi.org/10.1111/j.1439-0264.1990.tb00893.x PMid:2240581
  4. Paraskevas GK, Papaziogas B,Tzaves A, Giaglis G, Kitasoulis P, Natsis K. Supratrochlear foramen the humerus and its relation to intramedullary canal: a potential surgical application. Med Sci Monit. 2010;16(4):119-23.
  5. Lamb DS. The olecranon perforation. Am Anthrapol. 890;3;159-74. https://doi.org/10.1525/aa.1890.3.2.02a00050
  6. Tyl¬lianakis M, Tsompos P, Anagnostou K et al. Intramedullary nailing of humeral diaphyseal fractures. Is distal locking really necessary? Int. J Shoulder Surg. 2013;7(2):65-8. https://doi.org/10.4103/0973-6042.114233 PMid:23960365 PMCid:PMC3743033
  7. Brauer CA, Lee BM, Bae DS et al. A systemic review of medial and lateral entry pinning versus lateral entry pinning of supracondylar fracture of humerus. J Pediatric Orthop. 2007;27:181-6. https://doi.org/10.1097/bpo.0b013e3180316cf1 PMid:17314643
  8. Blakely RL, Marmouze RJ, Wynne DD: The Incidence of the Perforation of the coronoid-olecranon Septum in the Middle Mississippian Population of Dickson Mounds, Fulton Coun¬ty, Illinois. In Proceedings of the Indiana Academy of Sci¬ence, 2013;78:73-82.
  9. Chapman DL, Garvey N, Hancock S, Alexiou M, Agulnik SI, Gibson-Brown JJ et al. Expression of the Tbox family genes, TBx1-TBx 5, during early mouse development. Dev Dyn.1996;206:379-90.https://doi.org/10.1002/(SICI)1097-0177(199608)206:4<379::AID-AJA4>3.0.CO;2-F
  10. Kate BR, Dubey PN. A note on septal apertures in the Humerus. E Anthropol.1970;33:270-84.
  11. Singh S, Singh SP. A study of the supratrochlear foramen in the humerus of North Indians. J Anat Soc India. 1972;21:52-56.
  12. Singhal S, Rao V. Supratrochlear foramen of the humerus. Anat Sci Int. 2007;82(2):105-7. https://doi.org/10.1111/j.1447-073X.2007.00172.x  PMid:17585566
  13. Soubhagya R Nayak, Srijit Das, Krishnamurthy A, Prabhu V, Potu BK. Supratrochlear foramen of the humerus: Anatomico-Radiological study with clinical implications. Upsala J of Med Sci. 2009;114(2)90-4. https://doi.org/10.1080/03009730802688819 PMid:19396695 PMCid:PMC2852753
  14. Savitha V, Dakshayani KR. Study of supratrochlear foramen of humerus. Int J Ant Res. 2016;4(4):2979-83. https://doi.org/10.16965/ijar.2016.387
  15. Sangeetha V, Premchand SA. Morphology of humeral septal aperture: an osteologic study. NJBMS 2017;8(2):83-6.
  16. Cheng JC, Shen WY. Limb fracture in different paediatric age group: a study of 3350 children. J Orthop Trauma,1993;7:15-22. https://doi.org/10.1097/00005131-199302000-00004 PMid:8433194
  17. Varlam H, St Antoe D, Christol RO. Supracondylar process and supratrochlear foramen of humerus:a case report and review of literature. Morphologie:bulletin de 1 Association de anatomists.2005;89(286):121-5. https://doi.org/10.1016/S1286-0115(05)83248-5.
  18. Akabori E. Septal apertures in the humerus in Japanese, Ainu and Koreans. Am J Phys Anthropol. 1934;18:395-400. https://doi.org/10.1002/ajpa.1330180320
  19. Benfer RA, Tappen NC. The occurrence of the septal perforation of the humerus in three non-human primate species. Am J Phys Anthropol. 1968;29:19-28. https://doi.org/10.1002/ajpa.1330290111 PMid:4971986
  20. Krishnamurthy A, Yelicharla AR, Takkalapalli A, Munishamappa V, Bovinndala EB, Chandramohan M. Supratrochlear foramen of humerus – a morphometric study. Int J Biol Med Res. 2011;2(3):829-31.
  21. Jing LI, Qinghua MAO, Wenyuan LI, Xiaoyan LI. An anatomical study of the Supratrochlear foramen of Jining population. Turk J Med Sci. 2015;45(6):1369-73. https://doi.org/10.3906/sag-1407-44 PMid:26775396
  22. Glanville EV. Perforation of the coronoid-olecranon septum humero-ulnar relationships in Netherlands and African populations. Am J Phys Anthropol. 1967;26:85-92 https://doi.org/10.1002/ajpa.1330260111 PMid:5633731
  23. Hrdlicka A. The humerus: septal apertures. Anthropologie. 1932;10:31-95.

Cite this article: Mallikarjun M, Raveendra Patil GT, Solomon Krupanidhi U. MORPHOLOGICAL STUDY OF SUPRATROCHLEAR FORAMEN IN ADULT DRY HUMERUS BONES. Int J Anat Res 2020;8(3.1):7604-7608. DOI: 10.16965/ijar.2020.172