A bunion, also known as hallux valgus, is a bony prominence at the base of the big toe. In this condition, the 1st metatarsal bone of the big toe angles outward abnormally from its joint in the midfoot. This often results in pain, redness, and rubbing in footwear. A bunion can change the shape of your foot, making it difficult for you to wear regular shoes. The symptoms can worsen if left untreated.
Although it is not clearly understood why bunions occur, possible causes include:
The main indication of a bunion is when the big toe angles towards the other toes of the foot. Other signs and symptoms include:
Your doctor will review your medical history and perform a physical examination to assess the extent of bony misalignment and damage to the soft tissues. Weight-bearing X-rays or X-rays taken while standing help to assess the severity of the bunion and the deformity of the toe joints.
Your doctor will initially recommend conservative treatment measures with the goal of reducing or eliminating your foot pain.
Such measures can include:
Conservative treatment measures can help relieve the discomfort of a bunion, however, if symptoms worsen and interfere with your daily routine you may need surgery. There are many surgical procedures to treat bunions. Your doctor will choose a procedure that is ideal for your condition and severity. Surgery may involve a bunionectomy where the bump or enlarged portion of the bone is removed. It may involve an osteotomy or cutting of the bone along with realignment. It may also involve arthrodesis or fusion of the big toe joint. This is performed if the joint has developed severe arthritis.
A bunion is a bony prominence caused by mal-alignment of the bones in the foot. It may result in pain, swelling, and foot deformity causing difficulty with wearing shoes. Bunions can often be treated with conservative methods successfully to realign the joint and relieve pain and discomfort. Surgery may be recommended if there is worsening pain and disability. Talk to your doctor to learn more about the treatment for bunions.
A bunion, also known as hallux valgus, is bony prominence at the base of the big toe, which often results in pain, redness and rubbing in footwear. The 1st metatarsal bone abnormally angles outward towards the other foot from its joint in the midfoot. A bunion can change the shape of your foot, make it difficult for you to find shoes that fit correctly and worsen the symptoms if left untreated.
Although it is not clearly understood why bunions occur, possible causes include:
Family history and genetics
Arthritis (inflammation of the joints) including rheumatoid arthritis, psoriatic arthritis and gout
Neuromuscular conditions such as cerebral palsy which affects movement and co-ordination
Connective tissue disorders such as Marfan’s syndrome (affects the connective tissues)
Tight fitting shoes that are too tight, narrow or high heeled.
The main indication of a bunion is the pointing of the big toe towards the other toes of the foot. Other signs and symptoms include:
The diagnosis of a bunion by an surgeon includes taking a medical history, and performing a physical examination to assess the extent of misalignment and damage to the soft tissues. Your surgeon will usually order weight bearing X-rays that are. taken while standing to access the severity of the bunion and deformity of the toe joints.
Your Physician may have already initially recommended conservative treatment measures with the goal of reducing or eliminating your foot pain.
Such measures can include:
Conservative treatment measures can help relieve the discomfort of a bunion, however these measures will not prevent the bunion from becoming worse.
Surgery is the only means of correcting a bunion. Surgery is also recommended when conservative measures fail to treat the symptoms of a bunion.
There are many surgical options to treat a bunion. The common goal is to realign the bones in the foot, correct the deformity, and relieve pain and discomfort. The surgery is performed as a day procedure, under the effect of a light general anaesthetic and a regional nerve block. When you wake up, you will not be in pain and will be able to walk on your foot straight away.
Osteotomy is a common type of bunion surgery that involves the surgical cutting and realignment of the bones around your big toe. Your surgeon selects the appropriate surgical procedure based on the type of bunion and its severity.
There are 3 main types of osteotomies used by foot and ankle surgeons; namely akin osteotomy, chevron osteotomy, and scarf osteotomy.
Akin osteotomy corrects the sideways deviation of the big toe. In this procedure, your surgeon makes a small cut in the proximal phalanx (base of the big toe) and removes a wedge of bone to straighten the big toe. The bony fragments are then stabilised using a screw or staples. This procedure is often used in conjunction with the other procedures below.
A chevron osteotomy is usually recommended for mild to moderate bunion deformities. During this procedure, your surgeon will make an incision over your big toe. The joint capsule is opened and the bunion is removed using a surgical saw. A V-shaped cut is made on your big toe and the metatarsal bones are shifted to bring your toe into its normal anatomical position. The bunion is then shaved and the soft tissues are realigned to correct the position. Akin osteotomy may be performed if necessary. The mobility of your big toe is examined, and the capsule and wound are re-approximated with sutures. Screws or pins are used to hold the bones in their new position until healing.
This procedure can also be performed minimally invasively with keyhole style incisions.
Arthrodesis: Involves fusing the two bones that form the big toe joint. This procedure is used for severe bunions and when arthritis has set in. The movement of your big toe is reduced following this procedure but pain and deformity are very well controlled.
Scarf osteotomy is usually recommended for moderate to severe bunion deformities.
Your surgeon will make an incision along your big toe and open up the joint capsule to expose the bump. The bump on your big toe is then removed using a bone saw. Your first metatarsal bone is then cut in a Z shape and realigned to correct the deformity. Your surgeon will fix the cut bone with pins or screws. The joint capsule and surgical wounds are then re-approximated using dissolvable sutures keeping your toe in a straight position. This is a very powerful corrective procedure with excellent long term results.
As with any surgery, bunion surgery involves certain risks and complications. They include:
Patients should follow all instructions given by the surgeon following the surgery. These include:
A bunion is bony prominence caused by mal-alignment of the bones in the foot. Bunions result in pain, swelling and deformity of the foot and make it difficult to find comfortable shoes. Bunion surgery can be performed to realign the joint, correct the deformity, and relieve the pain and discomfort.