Foot drop is when you have difficulty lifting the front part of your foot. This may cause you to drag your foot when you walk. Foot drop, also called drop foot, can be caused by a problem with the muscles, nerves, or anatomy of your foot or leg.
Peroneal nerve injury - foot drop; Foot drop palsy; Peroneal neuropathy; Drop foot
Foot drop is not a condition by itself. It is a symptom of another disorder. Foot drop can be caused by a number of health conditions.
The most common cause of foot drop is
Conditions that affect the nerves and muscles in the body can lead to foot drop. They include:
Peripheral neuropathy. Diabetesis the most common cause of peripheral neuropathy Muscular dystrophy, a group of disorders that cause muscle weakness and loss of muscle tissue. Charcot-Marie-Tooth diseaseis an inherited disorder that affects the peripheral nerves Poliois caused by a virus, and can cause muscle weakness and paralysis
Brain and spinal cord disorders can cause muscle weakness and paralysis and include:
Stroke Amyotrophic lateral sclerosis (ALS) Multiple sclerosis
Foot drop can cause problems walking. Because you can't raise the front of your foot, you need to raise your leg higher than normal to take a step to avoid dragging your toes or tripping. The foot may make a slapping noise as it hits the ground. This is called a steppage
Depending on the cause of foot drop, you may feel numbness or tingling on the top of your foot or shin. Foot drop may occur in one or both feet, depending on the cause.
Exams and Tests
Your health care provider will perform a physical exam, which may show:
- Loss of muscle control in the lower legs and feet
- Atrophy of the foot or leg muscles
- Difficulty lifting up the foot and toes
Your provider may order one or more of the following tests to check your muscles and nerves and to determine the cause:
Electromyography(EMG, a test of electrical activity in muscles) Nerve conduction teststo see how fast electrical signals move through a peripheral nerve)
- Imaging tests such as
MRI, X-rays, CT scans
- Nerve ultrasound
- Blood tests
Treatment of foot drop depends on what is causing it. In some cases, treating the cause will also cure foot drop. If the cause is a chronic or ongoing illness, foot drop may be permanent.
Certain people may benefit from physical and occupational therapy.
Possible treatments include:
- Braces, splints, or shoe inserts to help support the foot and keep it in a more normal position.
- Physical therapy can help stretch and strengthen muscles and help you walk better.
- Nerve stimulation may help retrain the nerves and muscles of the foot.
Surgery may be needed to relieve pressure on the nerve or to try to repair it. For long-term foot drop, your provider may suggest fusing the ankle or foot bones. Or you may have tendon surgery. In this, a working tendon and attached muscle is transferred to a different part of the foot.
How well you recover depends on what is causing foot drop. Foot drop will often go away completely. If the cause is more severe, such as stroke, you may not recover completely.
When to Contact a Medical Professional
Call your health care provider if you have trouble walking or controlling your foot:
- Your toes drag on the floor while walking.
- You have a slapping gait (walking pattern in which each step makes a slapping noise).
- You are unable to hold up the front of your foot.
- You have decreased sensation, numbness, or tingling in your foot or toes.
- You have ankle or foot weakness.
Del Toro DR, Seslija D, King JC. Fibular (peroneal) neuropathy. In: Frontera WR, Silve JK, Rizzo TD, eds. Essentials of Physical Medicine and Rehabilitation. 4th ed. Philadelphia, PA: Elsevier; 2019:chap75.
Katirji B. Disorders of peripheral nerves. In: Daroff RB, Jankovic J, Mazziotta JC, Pomeroy SL, eds. Bradley's Neurology in Clinical Practice. 7th ed. Philadelphia, PA: Elsevier; 2016:chap 107.
Thompson PD, Nutt JG. Gait disorders. In: Daroff RB, Jankovic J, Mazziotta JC, Pomeroy SL, eds. Bradley's Neurology in Clinical Practice. 7th ed. Philadelphia, PA: Elsevier; 2016:chap 24.
Review Date: 06/07/2019
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright ©2019 A.D.A.M., Inc., as modified by University of California San Francisco. Any duplication or distribution of the information contained herein is strictly prohibited.
Information developed by A.D.A.M., Inc. regarding tests and test results may not directly correspond with information provided by UCSF Health. Please discuss with your doctor any questions or concerns you may have.