Bunion is a prominence of the medial portion of the head of the 1st metatarsal bone. The cause is often variations in position of the 1st metatarsal bone or great toe, such as lateral angulation of the great toe (hallux valgus). Secondary osteoarthritis and spur formation are common. Symptoms may include pain and redness, bursitis medial to the joint, and mild synovitis. Diagnosis is usually clinical. Treatment is usually a shoe with a wide toe box, protective pads, and orthotics. For bursitis or synovitis, corticosteroid injection may be helpful.
Shoes with narrow toes can trigger a bunion, but they?re not the underlying cause. Bunions run in families, because foot type (shape and structure) is hereditary, and some types are more prone to bunions than others. Low arches, flat feet, and loose joints and tendons all increase the risk. The shape of the metatarsal head (the top of the first metatarsal bone) also makes a difference: if it?s too round, the joint is less stable and more likely to deform when squeezed into shoes with narrow toes.
The most common symptoms associated with this condition are pain on the side of the foot just behind the great toe. A red painful bump is usually present. Pain is usually brought on with walking or sports. Shoes don't cause bunions but will typically aggravate them. Stiff leather shoes or shoes with a tapered toe box are the prime offenders. This is why bunion pain is most common in women whose shoes have a pointed toe box. The bunion site will often be slightly swollen and red from the constant rubbing and irritation of a shoe. Occasionally, corns can develop between the 1st and 2nd toe from the pressure the toes rubbing against each other.
Your family doctor or chiropodist /podiatrist can identify a bunion simply by examining your foot. During the exam, your big toe will be moved up and down to determine if your range of motion is limited. You will be examined for signs of redness or swelling and be questioned about your history of pain. A foot x-ray can show an abnormal angle between the big toe and the foot. In some cases, arthritis may also be seen. A X-ray of your foot may help identify the cause of the bunion and rate its severity.
Non Surgical Treatment
Sometimes observation of the bunion is all that's needed. A periodic office evaluation and x-ray examination can determine if your bunion deformity is advancing, thereby reducing your chance of irreversible damage to the joint. In many other cases however some type of treatment is needed. Early treatments are aimed at limiting the progression of the deformity and easing the pain of bunion or an associated joint. Conservative treatments such as orthotics can achieve this but they won't reverse the deformity itself. These options include changes in shoewear. Padding. Pads placed over the area of the bunion can help minimise pain, but will not stop the progression of the bunion. Activity modifications. Avoid activity that causes bunion pain, this could include standing for long periods of time. Medications. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, may help to relieve pain. Icing. Applying an ice pack several times a day helps reduce inflammation and pain. Orthotic devices. Orthotics are the mainstay of non-surgical treatment for bunions.
Surgery may be considered if your symptoms are severe and don't respond to non-surgical treatments. The type of surgery will depend on the level of deformity, the severity of your symptoms, your age, and any other associated medical conditions.