The term "hallux valgus" or "hallux abducto-valgus" are the most commonly used medical terms associated with a bunion anomaly, where "hallux" refers to the great toe, "valgus" refers to the abnormal angulation of the great toe commonly associated with bunion anomalies, and "abductus/-o" refers to the abnormal drifting or inward leaning of the great toe towards the second toe, which is also commonly associated with bunions. It is important to state that "hallux abducto" refers to the motion the great toe moves away from the body's midline. Deformities of the lower extremity are usually named in accordance to the body's midline, or the line bisecting the body longitudinally into two halves. In more severe cases, the hallux continuing in the abductus fashion eventually either overlaps or underlaps subsequent lesser (small) toes especially the second (adjacent toe).
The most important causative factor is poor fitting footwear. This accounts for an higher incidence among women than men. Family history of bunions. Abnormal foot function, excessive pronation. Poor foot mechanics, such as excessive pronation (rolling inwards of the foot), causes a medial force which exerts pressure and can lead to the formation of bunions. Rheumatoid or osteoarthritis. Genetic and neuromuscular diseases, which can result in a muscular imbalance such as Down's syndrome. If one leg is longer then the other, the longer leg is more inclined to develop a bunion. If the ligaments in the feet are very weak. In some cases, bunions can occur due to trauma or injury to the feet.
A bunion, also called a hallux valgus, is a bony prominence on the inside of the big toe, caused by a misalignment of the joint. The overlying skin maybe swollen, red and tender. Bunions are often painful and can limit what shoes you can wear.
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
Detecting and treating bunions can relieve many of the symptoms associated with this condition. Doctors often consider whether the condition requires non-surgical or surgical treatment. The decision is based on the severity of the symptoms. Because bunions often get worse over time, early detection and proper treatment are very important. Some non-surgical methods to reduce the symptoms related to bunions include cushioning the area with padding or tape, taking medication to relieve pain and inflammation, using physiotherapy to reduce pain and related symptoms (e.g., ultrasound, whirlpool baths, joint mobilization), wearing custom orthotics to provide better movement and stability of the foot, wearing well-fitted comfortable shoes that are not too tight (if your shoes used to fit but now are too tight around the bunion area, you may be able to have them stretched in this area), using a special splint at night to decrease the amount the toe angles towards the other toes. When non-surgical methods do not provide relief, surgery may be needed. During surgery, the doctor will remove the tissue or bone in the area of the bunion and attempt to straighten the big toe, and may join the bones of the affected joint.
The main goal of surgery is to realign the big toe joint in order to relieve symptoms, correct deformity and restore function. Surgery to remove a bunion is known as a bunionectomy. There are many variations of this operation and the type of surgery performed will vary depending on factors such as the degree of deformity, the strength of the bones, the person's age and the surgeon?s preferred approach. Most surgery involves the removal of the bony outgrowth (exostosis) and the realignment of the bones of the joint. Soft tissue structures such as the ligaments and tendons may be repositioned and the bursa may be removed. The insertion of screws and pins may be required to stabilise the bones in their new, realigned position.
To help prevent bunions, select your style and size of shoes wisely. Choose shoes with a wide toe area and a half-inch of space between the tip of your longest toe and the end of the shoe. Shoes also should conform to the shape of your feet without causing too much pressure.