The calcaneal medial rami (rami Calcanei Mediales, BNA) are a set of seven bundles of posterior nerve roots at the base of the fifth metatarsal. They begin on each side of the spinal cord and travel to the calcaneal nerve. As they wrap around the heel bone, they form the medial point of the forefoot joint. The calcaneal branches provide sensations of pressure, movement, pain, and heat to the back of the foot, and also provide innervation to the skin of the heel area.
The calcaneal branches are an important element of the innervation of the distal fibulas, calcaneus and top of the foot, as they extend along the entire length of the soles
The calcaneal rami of the medial muscle group are 5 muscles of the lower leg located behind the heel. This group of muscles provides support for the body when standing and performing physical exercises on the balls of the feet. If this muscle group is weakened, then when the foot is worn, depreciation is reduced and overload of the periosteum is aggravated, which leads to painful sensations in the heel. For example, the longitudinal muscles of the forefoot are often hypotonic, and with strong traction of the foot they tend to “roll”, so that the edge of the sole of the shoe “rides” along the instep of the foot. With prolonged strain on the foot, pain in the first interdigital joint is often also observed (tight shoes, etc.). The muscles of the hindfoot are particularly prone to overload