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Published online: 2024-04-26

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Never undescribed four — headed plantaris muscle

Nicol Zielinska1, Krystian Maślanka1, Andrzej Węgiel1, Konrad Kurtys1, Łukasz Olewnik1
Pubmed: 38757503

Abstract

The plantaris is a small muscle of the superficial posterior compartment of the leg. It originates at the lateral supracondylar line of the femur and the knee joint capsule, from where it continues distally, forming a long and slender tendon distally attached to the calcaneal tuberosity. During standard anatomical dissection four-headed plantaris muscle was found and all of its heads connected to each other as a single muscle belly passing into tendinous structure which was distally attached as a standard plantaris muscle. The first head originated from the popliteal surface of the femur. The second one was originated from distal Kaplan fiber. In turn, the third and fourth heads were proximally attached to the lateral femoral epicondyle.   Knowledge about morphological variations is necessary because of its potential clinical significance, which means not only neurovascular compressions, but also surgical procedures.

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References

  1. Bergman RA. Illustrated encyclopedia of human anatomic variation: Opera. Anatomy Atlases 2006, Iowa City 1996.
  2. Berthold DP, Willinger L, Muench LN, et al. Visualization of proximal and distal kaplan fibers using 3-dimensional magnetic resonance imaging and anatomic dissection. Am J Sports Med. 2020; 48(8): 1929–1936.
  3. Diogo R, Siomava N, Gitton Y. Development of human limb muscles based on whole-mount immunostaining and the links between ontogeny and evolution. Development. 2019; 146(20).
  4. Geeslin AG, Chahla J, Moatshe G, et al. Anterolateral knee extra-articular stabilizers: a robotic sectioning study of the anterolateral ligament and distal iliotibial band kaplan fibers. Am J Sports Med. 2018; 46(6): 1352–1361.
  5. Kotian S, Sachin KS, Bhat K. Bifurcated plantaris with rare relations to the neurovascular bundle in the popliteal fossa. Anatomical Science International. 2013; 88(4): 239–241.
  6. Kurtys K, Gonera B, Olewnik Ł, et al. Is the plantaris muscle the most undefined human skeletal muscle? Anat Sci Int. 2021; 96(3): 471–477.
  7. Kwinter D, Lagrew J, Kretzer J, et al. Unilateral double plantaris muscle: a rare anatomical variation. Int J Morphol. 2010; 28(4): 1097–1099.
  8. Iordache EA, Hirschmann M, Amsler F, et al. Injuries of Kaplan fibers in ACL deficient and reconstructed knees — redefining the structure and risk assessment on MRI using injury patterns. Orthopaedic Journal of Sports Medicine. 2021; 9(6_suppl2): 2325967121S0018.
  9. Maślanka K, Zielinska N, Paulsen F, et al. A three-headed plantaris muscle fused with Kaplan fibers: potential clinical significance. Folia Morphol (Warsz). 2023 [Epub ahead of print].
  10. Olewnik Ł, Karauda P, Gonera B, et al. Impact of plantaris ligamentous tendon. Sci Rep. 2021; 11(1): 4550.
  11. Olewnik Ł, Kurtys K, Gonera B, et al. Proposal for a new classification of plantaris muscle origin and its potential effect on the knee joint. Ann Anat. 2020; 231: 151506.
  12. Olewnik Ł, Podgórski M, Polguj M, et al. The plantaris muscle — rare relations to the neurovascular bundle in the popliteal fossa. Folia Morphol. 2015.
  13. Olewnik Ł, Wysiadecki G, Podgórski M, et al. The plantaris muscle tendon and its relationship with the achilles tendinopathy. Biomed Res Int. 2018; 2018: 9623579.
  14. Olewnik Ł, Wysiadecki G, Polguj M, et al. Anatomic study suggests that the morphology of the plantaris tendon may be related to Achilles tendonitis. Surg Radiol Anat. 2016; 39(1): 69–75.
  15. Olewnik Ł, Zielinska N, Aragones P, et al. The accessory heads of the quadriceps femoris muscle may affect the layering of the quadriceps tendon and potential graft harvest lengths. Knee Surg Sports Traumatol Arthrosc. 2023; 31(12): 5755–5764.
  16. Olewnik Ł, Zielinska N, Karauda P, et al. A three-headed plantaris muscle: evidence that the plantaris is not a vestigial muscle? Surg Radiol Anat. 2020; 42(10): 1189–1193.
  17. Smędra A, Olewnik Ł, Łabętowicz P, et al. A bifurcated plantaris muscle: another confirmation of its high morphological variability? Another type of plantaris muscle. Folia Morphol. 2021; 80(3): 739–744.
  18. Spang C, Alfredson H, Docking SI, et al. The plantaris tendon. Bone Joint J. 2016; 98-B(10): 1312–1319.
  19. Waśniewska A, Olewnik Ł, Diogo R, et al. Morphological variability of the plantaris muscle origin in human fetuses. Ann Anat. 2022; 239: 151794.
  20. Yildiz S, Kocabriyik N, Ilingiroglu S, et al. Morphometry of plantaris muscle in human fetuses. Gülhane Tıp Derg. 2011; 53: 149–153.
  21. Zielinska N, Olewnik Ł, Karauda P, et al. A very rare case of an accessory subscapularis muscle and its potential clinical significance. Surg Radiol Anat. 2021; 43(1): 19–25.