Calcaneus Heel bone C D E

23 Tuber calcanei. Tuberosity on the posterior aspect of the calcaneus. C D

24 Medial process of calcaneus. Processus medialis tuberis calcanei. Weak process anterior, medial and inferior to the tuberosity of the cal-caneus. D

25 Lateral process of calcaneus. Processus lateralis tuberis calcanei. Weak process inferolateral to the tuberosity of the calcaneus. C

26 Anterior tubercle of calcaneus. Tuberculum calcanei. Eminence on the anterior aspect of the inferior surface of the calcaneus. Attachment site of the plantar calcaneocuboid ligament. C

27 Sustentaculum tali. Medial prolongation ofthe calcaneus bearing the medial posterior facet of the calcaneus. D E

28 Sulcus tendinis m. flex. hall. longi. Bony groove for the flexor hallucis longus tendon located below the sustentaculum tali. D

29 Sulcus calcanei. Groove between the middle and posterior articular facets. C D

30 Sinus tarsi. Laterally opening, funnel-shaped space forming a continuation of the calcaneal sulcus and the sulcus of the talus. The inferior ankle joint is palpable here. B C. See also pp. 53C, 71 AC

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