There is an obvious correlation between the Plantar Aponeurosis tension and the Achilles tendon force. In other words, these two very important components of the human foot work together to support the arch of the foot and "efficient propulsion during gait". In other words, the Plantar Aponeurosis or Plantar Fascia actually "transmits the Achilles tendon forces from the hindfoot to the forefoot" during walking.
It is a thick connective tissue and runs to the metatarsal bones. The metatarsal bones are the five bones which run the length of the foot up to the toes. (The five hand bones are called metacarpals.)
Without the Plantar Aponeurosis, then the foot's fragility would be greatly increased and balance difficult. Not only does it cushion the metatarsals, on top of the bony region, it actually absorbs the shocks of running. Repetitive running and tearing can, according to bestrunningtips.com, lead to what is called a "spur". It is very painful, and particularly so when the foot is bent and weight applied, as in walking or running. The pain is usually very pronounced very early in the morning because the fascia shrinks back into place and has not had time to limber up. Ice packs and heel supports are helpful for this condition.
According to BMJ.com, a German hospital attempted extracorporeal shock wave treatment for the spur and it was reported to be ineffective as a treatment.
According to revolutionhealth.com, in 5% of spur cases (or plantar fasciitis), Plantar Fascia Release, or a cutting of the ligament is helpful to alleviate pain. The result being the release of tension and the relief of inflammation of the ligament. The good news being that this surgery is relatively simple and can be done endoscopically. Meaning less damage of the area and a faster healing time. There are times, when the surgeon will actually have to remove damaged tissue. It is said that 75 out of a 100 people get permanent relief after the procedure.
Your Plantar Aponeurosis, is very important to your human experience and it is kind of like the inner tread within the tire on your bicycle or car. Most usually, we only get one set of these magnificent tread and taking care of them is vitally important.
If you are a runner, it is advisable to take some time and spend some good money on shoes which will protect your Plantar Aponeurosis or fascia.
For inner maintenance, one might try Vitamins C, E and the Fish Oils. Remember that the fascia is a ligament which stretches and shrinks. Give it a light work out before running to allow for stretching. It really isn't such a good idea to jump out of bed and hit the ground running.
Sources: www.ejbjs.org ezinearticles.com wikipedia.com