A bunion, (medical term: hallux abductovalgus) is a condition resulting in boney prominence at the inside of the foot at the big toe joint. A bunion occurs when the big toe begins to deviate toward the second toe. The biggest misconception is that bunions occur from an overgrowth of bone. While that may be true in very few people, the bunion really represents a dislocation of the big toe joint as it bulges against the skin. Causes
Bunions are sometimes genetic and consist of certain tendons, ligaments, and supportive structures of the first metatarsal that are positioned differently. This bio-mechanical anomaly may be caused by a variety of conditions intrinsic to the structure of the foot, such as flat feet, excessive flexibility of ligaments, abnormal bone structure, and certain neurological conditions. These factors are often considered genetic. Although some experts are convinced that poor-fitting footwear is the main cause of bunion formation, other sources concede that footwear only exacerbates the problem caused by the original genetic structure. Bunions are commonly associated with a deviated position of the big toe toward the second toe, and the deviation in the angle between the first and second metatarsal bones of the foot. The small sesamoid bones found beneath the first metatarsal (which help the flexor tendon bend the big toe downwards) may also become deviated over time as the first metatarsal bone drifts away from its normal position. Arthritis of the big toe joint, diminished and/or altered range of motion, and discomfort with pressure applied to the bump or with motion of the joint, may all accompany bunion development. Atop of the first metatarsal head either medially or dorso-medially, there can also arise a bursa that when inflamed (bursitis), can be the most painful aspect of the process.
Symptoms
symptoms and problems caused by bunions include pain. You may then have difficulty walking due to pain. Inflammation and swelling at the base of the toe. This sometimes becomes infected. The foot may become so wide that it can be difficult to find wide enough shoes. You may get arthritis in the big toe. The second toe can become deformed. In severe cases, the big toe can push your second toe up out of place.
Diagnosis
Your doctor can identify a bunion by examining your foot. Watching your big toe as you move it up and down will help your doctor determine if your range of motion is limited. Your doctor will also look for redness or swelling. After the physical exam, an X-ray of your foot can help your doctor identify the cause of the bunion and rate its severity.
Non Surgical Treatment
Custom orthoses or over-the-counter insoles to aid big toe joint function, help control over-pronation and maintain proper alignment of the bones in the feet. Properly sized, supportive footwear that are torsionally stable (can?t be folded or twisted easily) and that feature a good ?rocker profile? (curved from the ball to tips of the toes) help to reduce stress on the joint when walking. Footwear modifications to expand the area of the shoe surrounding the bunion to relieve pressure. Physical therapy modalities include rest, icing and massage. Injections, surgery and other treatment options, please consult your medical doctor for information and/or referral to a podiatrist or other foot and ankle specialist.
Surgical Treatment
Surgery should only be considered for bunions that are painful, not for correction of the cosmetic appearance! The primary indication for operative intervention should be pain that is not relieved by appropriate non-operative management. Although symptom-free bunions can slowly increase in size over time surgical treatment is not recommended unless significant pain symptoms develop. The prolonged recovery time associated with most bunion operations, combined with the potential for complications means that patients should be extremely cautious of undergoing bunion surgery for purely cosmetic reasons.
Prevention
Shop for shoes that possess a removable liner, or insole, and stand on the liner after you have removed it from your shoe. This is an effective method to see if your shoe is wide enough in the forefoot to accommodate your bunion. If your bunion and forefoot are wider than the insole, your shoe will squeeze and constrict your bunion and create the symptoms that define this health problem. The insole should also be wide enough to fully accommodate your big toe when it points outward, away from your other toes.