Bunions form when the normal balance of forces that is exerted on the joints and foot?s tendons becomes disrupted-leading to foot deformity. They are brought about by years of abnormal motion and pressure over the MTP joint. It is acknowledged that bunions run in families. One theory advanced by Dr. Burton S. Schuler, a practicing podiatrist for over 38 years, Director of the Ambulatory Foot Clinic in Panama City, Florida, and author of Why You Really Hurt. It All Stars in the Foot, is that it is not necessarily bunions that are inherited but toe length, which can lead to the development of bunions.
Bunions form when the normal balance of forces that is exerted on the joints and tendons of the foot becomes disrupted. This disruption can lead to instability in the joint and cause the deformity. Bunions are brought about by years of abnormal motion and pressure over the MTP joint. They are, therefore, a symptom of faulty foot development and are usually caused by the way we walk and our inherited foot type or our shoes.
Patients with bunions will often display pain over the prominent bump on the inside of their forefoot (the medial eminence?). However, they may also have pain under the ball of the foot (under the area near the base of the second toe). Symptoms can vary in severity from none at all to severe discomfort aggravated by standing and walking. There is no direct correlation between the size of the bunion and the patient?s symptoms. Some patients with severe bunion deformities have minimal symptoms, while patients with mild bunion deformities may have significant symptoms. Symptoms are often exacerbated by restrictive shoe wear, particularly shoes with a narrow toe box or an uncomfortable, stiff, restraining upper.
Generally, observation is adequate to diagnose a bunion, as the bump is obvious on the side of the foot or base of the big toe. However, your physician may order X-rays that will show the extent of the deformity of the foot.
Non Surgical Treatment
Treatment may be surgical or non-surgical. The goal of non-surgical treatment is to relieve pressure on the foot and to prevent pressure sores and foot ulcers. This is accomplished by prescribing accommodative shoes with a wide toe box - sandals or extra depth shoes with soft moulded insoles. It may also be possible to relax the leather on shoes to make room for a bunion.
The choice of surgical procedures (bunionectomy) is based on a biomechanical and radiographic examination of the foot. Because there is actual bone displacement and joint adaptation, most successful bunionectomies require cutting and realigning the 1st metatarsal (an osteotomy). Simply “shaving the bump” is often inadequate in providing long-term relief of symptoms and in some cases can actually cause the bunion to progress faster. The most common procedure performed for the correction of bunions is the 1st metatarsal neck osteotomy, near the level of the joint. This refers to the anatomical site on the 1st metatarsal where the actual bone cut is made. Other procedures are preformed in the shaft of the metatarsal bone (see procedures preformed in the shaft of the metatarsal) and still other procedures are selected by the surgeon that are preformed in the base of the metatarsal bone (see surgeries preformed in the base of the metatarsal).
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