This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Spring ligament consists of all except - 
Select and explain. 
A. Plantar calcaneocuboid ligament, B. Plantar calcaneonavicular ligament, C. Medial calcaneonavicular ligament, D. Lateral calcaneonavicular ligament
A: Plantar calcaneocuboid ligament
Answer: A: Plantar calcaneocuboid ligament 
Explanation: Ans. is 'a' i.e., Planter calcaneocuboid ligament o The spring ligament (Plantar calcaneonavicular ligament) is a group of ligaments which connect calcaneum to navicular,o It consists ofSuperomedial ligament.Medioplantar oblique ligament fmedial or intermedial calcaneonavicular ligament).Inferoplantar longitudinal ligament (Lateral calcaneonavicular ligament).o The spring ligament or plantar calcaneonavicular ligament is powerful.o It is attached posteriorly to the anterior margin of the sustentaculum tali, and anteriorly to the plantar surface of the navicular bone between its tuberosity and articular margin,o The head of the talus rests directly on the upper surface of the ligament, which is covered by fibrocartilage.o The plantar surface of the ligament is supported by the tendon of tibialis posterior medially, and by the tendons of flexor hallucis longus and flexor digitorum longus, laterally.