Figure 18.

Synergistic action of tibialis posterior tendon, tibiospring ligament, and superomedial component of the spring ligament complex in maintaining the medial plantar arch. Partial tear of tibiospring ligament (pink dotted line and arrow), sprain of superomedial component of spring ligament (gray curved line and green arrow). Tibialis posterior tendinosis and partial interstitial tear (black arrow). Normal flexor digitorum longus tendon (yellow arrow). M: Medial malleolus of Tibia, ST-C: Sustentaculum tali of calcaneum, T: Talus