Process of the Calcaneal Tuberosity Medial

The medial process of the calcaneal tuber (processus medialis tuberis calcanei, pna, bna; tuberculum tibiale tuberis calcanei, jna) is a bony protrusion located on the medial surface of the calcaneal tuber. It serves as the attachment point for the medial head of the gastrocnemius muscle.

The medial process of the calcaneal tuber has a triangular shape and is directed anteriorly and upward. Its anterior surface is rough for the insertion of the gastrocnemius tendon. The posterior surface of the process is smooth and covered with articular cartilage, forming part of the subtalar joint.

The medial process of the calcaneal tuberosity plays an important role in the biomechanics of the foot, participating in the transfer of load from the lower leg to the foot during walking and running. Damage to this process can lead to gait disturbances and pain in the heel area.