posted on 16 Jan 2015 01:48 by gainheight
The plantar fascia is a strong, relatively inflexible, fibrous ligament band that runs through the bottom of the foot. That band helps to keep the complex arch system of the foot, absorb shock, plays a role in body balance and in the various phases of gait. The band transmits your weight across the bottom of the foot with each step you take. When the heel of the trailing leg starts to get off the ground, the band bears tension that is approximately twice the body weight. The tension on the band at this moment is even greater if the calf muscles are not flexible enough.
As a person gets older, the plantar fascia becomes less like a rubber band and more like a rope that doesn't stretch very well. The fat pad on the heel becomes thinner and can't absorb as much of the shock caused by walking. The extra shock damages the plantar fascia and may cause it to swell, tear or bruise. You may notice a bruise or swelling on your heel. Other risk factors for plantar fasciitis include being overweight and obesity. Diabetes. Spending most of the day on your feet. Becoming very active in a short period of time. Being flat-footed or having a high arch.
Plantar fasciitis typically causes a stabbing pain in the bottom of your foot near the heel. The pain is usually worst with the first few steps after awakening, although it can also be triggered by long periods of standing or getting up from a seated position.
Plantar fasciosis is confirmed if firm thumb pressure applied to the calcaneus when the foot is dorsiflexed elicits pain. Fascial pain along the plantar medial border of the fascia may also be present. If findings are equivocal, demonstration of a heel spur on x-ray may support the diagnosis; however, absence does not rule out the diagnosis, and visible spurs are not generally the cause of symptoms. Also, infrequently, calcaneal spurs appear ill defined on x-ray, exhibiting fluffy new bone formation, suggesting spondyloarthropathy (eg, ankylosing spondylitis, reactive arthritis. If an acute fascial tear is suspected, MRI is done.
Non Surgical Treatment
To alleviate the stress and pain on the fascia, the person can take shorter steps and avoid walking barefoot. Activities that involve foot impact, such as jogging, should be avoided. The most effective treatments include the use of in-shoe heel and arch cushioning with calf-stretching exercises and night splints that stretch the calf and plantar fascia while the patient sleeps. Prefabricated or custom-made foot orthotics may also alleviate fascial tension and symptoms. Other treatments may include activity modifications, NSAIDs, weight loss in obese patients, cold and ice massage therapy, and occasional corticosteroid injections. However, because corticosteroid injections can predispose to plantar fasciosis, many clinicians limit these injections. For recalcitrant cases, physical therapy, oral corticosteroids, and cast immobilization should be used before surgical intervention is considered. A newer form of treatment for recalcitrant types of plantar fasciosis is extracorporeal pulse activation therapy (EPAT), in which low-frequency pulse waves are delivered locally using a handheld applicator. The pulsed pressure wave is a safe, noninvasive technique that stimulates metabolism and enhances blood circulation, which helps regenerate damaged tissue and accelerate healing. EPAT is being used at major medical centers.
Plantar fasciotomy is often considered after conservative treatment has failed to resolve the issue after six months and is viewed as a last resort. Minimally invasive and endoscopic approaches to plantar fasciotomy exist but require a specialist who is familiar with certain equipment. Heel spur removal during plantar fasciotomy has not been found to improve the surgical outcome. Plantar heel pain may occur for multiple reasons and release of the lateral plantar nerve branch may be performed alongside the plantar fasciotomy in select cases. Possible complications of plantar fasciotomy include nerve injury, instability of the medial longitudinal arch of the foot, fracture of the calcaneus, prolonged recovery time, infection, rupture of the plantar fascia, and failure to improve the pain. Coblation (TOPAZ) surgery has recently been proposed as alternative surgical approaches for the treatment of recalcitrant plantar fasciitis.