Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 7. Lower Limb

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Atlas of Human Anatomy in Cross Section: Section 7. Lower Limb

Plate 7.15

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed

Upper Left Quadrant	Lower Left Quadrant	Lower Right Quadrant	Upper Right Quadrant
1. Infrapatellar fat pad 2. Medial patellar retinaculum	3. Tibial collateral ligament 4. Sartorius m. 5. Great saphenous v. 6. Tendon m. gracilis 7. Tendon sartorius m. 8. Tendons mm. semitendinosus and semimembranosus 9. Articular capsule 10. Gastrocnemius m. (medial head) 11. Popliteus m. (first appearance) and posterior cruciate ligament	12. Popliteal v. and a. 13. Tibial nerve 14. Medial sural cutaneous nerve 15. Gastrocnemius m. (lateral head) 16. Lateral sural cutaneous nerve and plantaris m. 17. Gastrocnemius m. (lateral head) 18. Fibular collateral ligament 19. Common peroneal curve 20. Tendon m. biceps femoris	21. Lateral patellar retinaculum and iliotibial tract 22. Tibia 23. Patellar ligament

This section passes just below the articular surface of the tibia and slightly above the tibiofibular articulation (seen in next cut). It cuts the tendons of biceps femoris (20), semitendinosus and semimembranosus (8), sartorius (4, 7), and gracilis (6). The sartorius muscle (but not its tendon) makes its last appearance, and the popliteus muscle (11) makes its first appearance in this section.

The lateral patellar retinaculum (21) is discussed with Plate 7. 11. The medial patellar retinaculum (2) is derived from the tendon of vastus medialis. It is attached to the patella along its medial border and passing along its sides to the tibia it attaches onto the oblique ridge and extends as far as the tibial collateral ligament (3). The medial patellar retinaculum extends distally beyond the oblique ridge to blend with the periosteum of the shaft of the tibia. The patellar retinaculum also becomes inseparably joined with the fibrous membrane of the articular capsule.

The fibular (18) and tibial (3) collateral ligaments are discussed with Plate 7.14.

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