Overview
Hammer toe is a Z-shaped deformity caused by dorsal subluxation at the metatarsophalangeal joint. Diagnosis is clinical. Treatment is modification of footwear and/or orthotics. The usual cause is misalignment of the joint surfaces due to a genetic predisposition toward aberrant foot biomechanics and tendon contractures. RA and neurologic disorders such as Charcot-Marie-Tooth disease are other causes.
Causes
If a foot is flat (pes planus, pronated), the flexor muscles on the bottom of the foot can overpower the others because a flatfoot is longer than a foot with a normal arch. When the foot flattens and lengthens, greater than normal tension is exerted on the flexor muscles in the toes. The toes are not strong enough to resist this tension and they may be overpowered, resulting in a contracture of the toe, or a bending down of the toe at the first toe joint (the proximal interphalangeal joint) which results in a hammertoe. If a foot has a high arch (pes cavus, supinated), the extensor muscles on the top of the foot can overpower the muscles on the bottom of the foot because the high arch weakens the flexor muscles. This allows the extensor muscles to exert greater than normal tension on the toes. The toes are not strong enough to resist this tension and they may be overpowered, resulting in a contracture of the toe, or a bending down of the toe at the first toe joint (the proximal interphalangeal joint) which results in a hammertoe.
Symptoms
A hammertoe causes you discomfort when you walk. It can also cause you pain when trying to stretch or move the affected toe or those around it. Hammertoe symptoms may be mild or severe. Mild Symptoms, a toe that is bent downward, corns or calluses. Severe Symptoms, difficulty walking, the inability to flex your foot or wiggle your toes, claw-like toes. See your doctor or podiatrist right away if you develop any of these symptoms.
Diagnosis
The exam may reveal a toe in which the near bone of the toe (proximal phalanx) is angled upward and the middle bone of the toe points in the opposite direction (plantar flexed). Toes may appear crooked or rotated. The involved joint may be painful when moved, or stiff. There may be areas of thickened skin (corns or calluses) on top Hammer toe of or between the toes, a callus may also be observed at the tip of the affected toe beneath the toenail. An attempt to passively correct the deformity will help elucidate the best treatment option as the examiner determines whether the toe is still flexible or not. It is advisable to assess palpable pulses, since their presence is associated with a good prognosis for healing after surgery. X-rays will demonstrate the contractures of the involved joints, as well as possible arthritic changes and bone enlargements (exostoses, spurs). X-rays of the involved foot are usually performed in a weight-bearing position.
Non Surgical Treatment
To keep your hammertoes more comfortable, start by replacing your tight, narrow, pointy shoes with those that have plenty of room in the toes. Skip the high heels in favor of low-heeled shoes to take the pressure off your toes. You should have at least one-half inch between your longest toe and the tip of your shoe. If you don't want to go out and buy new shoes, see if your local shoe repair shop can stretch your shoes to make the toe area more accommodating to your hammertoe.
Surgical Treatment
Surgery involves removing a small section of bone from the affected joint through a procedure called arthroplasty. Arthrodesis may also be performed to treat hammertoes, which involves fusing together one of the joints in the toe in order to keep it straight. This procedure requires the use of a metal pin to hold the toe in position while it heals.
Hammer toe is a Z-shaped deformity caused by dorsal subluxation at the metatarsophalangeal joint. Diagnosis is clinical. Treatment is modification of footwear and/or orthotics. The usual cause is misalignment of the joint surfaces due to a genetic predisposition toward aberrant foot biomechanics and tendon contractures. RA and neurologic disorders such as Charcot-Marie-Tooth disease are other causes.
Causes
If a foot is flat (pes planus, pronated), the flexor muscles on the bottom of the foot can overpower the others because a flatfoot is longer than a foot with a normal arch. When the foot flattens and lengthens, greater than normal tension is exerted on the flexor muscles in the toes. The toes are not strong enough to resist this tension and they may be overpowered, resulting in a contracture of the toe, or a bending down of the toe at the first toe joint (the proximal interphalangeal joint) which results in a hammertoe. If a foot has a high arch (pes cavus, supinated), the extensor muscles on the top of the foot can overpower the muscles on the bottom of the foot because the high arch weakens the flexor muscles. This allows the extensor muscles to exert greater than normal tension on the toes. The toes are not strong enough to resist this tension and they may be overpowered, resulting in a contracture of the toe, or a bending down of the toe at the first toe joint (the proximal interphalangeal joint) which results in a hammertoe.
Symptoms
A hammertoe causes you discomfort when you walk. It can also cause you pain when trying to stretch or move the affected toe or those around it. Hammertoe symptoms may be mild or severe. Mild Symptoms, a toe that is bent downward, corns or calluses. Severe Symptoms, difficulty walking, the inability to flex your foot or wiggle your toes, claw-like toes. See your doctor or podiatrist right away if you develop any of these symptoms.
Diagnosis
The exam may reveal a toe in which the near bone of the toe (proximal phalanx) is angled upward and the middle bone of the toe points in the opposite direction (plantar flexed). Toes may appear crooked or rotated. The involved joint may be painful when moved, or stiff. There may be areas of thickened skin (corns or calluses) on top Hammer toe of or between the toes, a callus may also be observed at the tip of the affected toe beneath the toenail. An attempt to passively correct the deformity will help elucidate the best treatment option as the examiner determines whether the toe is still flexible or not. It is advisable to assess palpable pulses, since their presence is associated with a good prognosis for healing after surgery. X-rays will demonstrate the contractures of the involved joints, as well as possible arthritic changes and bone enlargements (exostoses, spurs). X-rays of the involved foot are usually performed in a weight-bearing position.
Non Surgical Treatment
To keep your hammertoes more comfortable, start by replacing your tight, narrow, pointy shoes with those that have plenty of room in the toes. Skip the high heels in favor of low-heeled shoes to take the pressure off your toes. You should have at least one-half inch between your longest toe and the tip of your shoe. If you don't want to go out and buy new shoes, see if your local shoe repair shop can stretch your shoes to make the toe area more accommodating to your hammertoe.
Surgical Treatment
Surgery involves removing a small section of bone from the affected joint through a procedure called arthroplasty. Arthrodesis may also be performed to treat hammertoes, which involves fusing together one of the joints in the toe in order to keep it straight. This procedure requires the use of a metal pin to hold the toe in position while it heals.