According to the data you provided (heel, ankle and foot pain, not being able to push off of the foot, snapping sensation in heel/ankle) it is possible that you might be experiencing a posterior tibialis tear and/or tendonitis.
The tendon of the posterior tibialis muscle is attached to the navicular bone, which holds the foot arch. The inflammation of the tendon (tendonitis) or its tear might be caused by excessive use of the tendon (walking, hiking, or climbing), degeneration or trauma.
Once the tear happens or inflammation is present, pain in the ankle, loss of the arch, inability to stand on the toes and other symptoms might be present.
A popping sound might be associated with the tear causing significant pain.
The therapy options include: anti-inflammatory medications in cases of tendonitis, rest or even immobilization of the foot, orthotic devices and physical therapy. In more severe cases, surgery might be needed to repair the tendon, to remove the misaligned bones or to remove certain of the inflamed tissue. Physical therapy is usually recommended after the surgery.
According to the information you provided, it seems likely that your condition might have worsened. You might want to visit your orthopedist for a physical examination in order to evaluate the present condition and determine the most beneficial therapy options for you.
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