The flexor digitorum longus muscle can cause and contribute to pain in the foot that radiates into the back of the leg. It can contribute to the development of hammertoe and claw toe.
The abductor hallucis muscle is located on the bottom of the foot. It can cause pain in the ankle and heel. There is a deep aching pain in the heel and ankle when trying to rest.
The flexor digitorum brevis muscle is located on the bottom of the foot. It can cause a sharp stabbing pain in the ball of the foot that becomes a deep ache when resting.
The piriformis muscle contributes to pain in the low back, buttocks, hip, and hip joint, pelvic area, and pain down the back of the thigh.
The peroneus longus and peroneus brevis contribute to pain on the outside of the ankle, the foot, and pain in the lower leg just below the knee. The muscles are contributors to weak ankles and foot drop.
The flexor hallucis brevis muscle contributes to pain on the bottom of the foot, just under the big toe. It can also be a factor in plantar fasciitis, hammer toe, turf toe and gout.
The adductor hallucis muscle contributes to pain in the ball of the foot just under the toes. It can be a primary contributor to plantar fasciitis.
The gastrocnemius muscle is a prime contributor to pain in the back of the knee. It can contribute to lower leg, ankle, and arch pain.
The peroneus tertius muscle can cause and contribute to pain in the lower leg bend where the leg, ankle and foot connect. Pain is often felt on the outside of the heel. If your ankles are weak and have a tendency to buckle, you should check this muscle for trigger points and tightness. A classic sign of peroneus tertius dysfunction is pain worsens with each step.
The soleus muscle can cause and contribute to pain in the heel, ankle and back of the knee. It can also cause pain in the low back on the same side of the affected leg. Dysfunction of the soleus muscle can also contribute to swelling in the foot and ankle. Occasionally a trigger point at the bottom and outside of the muscle can contribute to pain in the jaw and side of the head.
The tibialis posterior muscle can cause and contribute to pain in the lower leg just above the heel. This pain will often extend into the heel and the bottom of the foot. The pain will sometimes extend up into the lower calf. If you have fallen arches, you should check the tibialis posterior for trigger points and tightness because dysfunction of this muscle will allow your ankles to collapse inward.
The abductor digiti minimi muscle can cause ankle pain that is similar to a sprained ankle. Pain is felt on the outside of the heel and ankle.
The quadratus plantae is a primary contributor to plantar fasciitis and calcaneal compartment syndrome. Pain is felt in the heel.