Pain guide · Leg pain
Foot drop (drop foot) means you can't lift the front of your foot and toes properly, so your toes catch, your foot slaps down, or you lift your knee higher to clear the ground. It is a sign rather than a diagnosis: most often a squeezed or injured nerve at the outer knee or a trapped nerve root in the lower back, and less often a stroke, multiple sclerosis (MS) or another nerve or muscle condition. Many cases improve over months, and some don't, depending on the cause.
The cause decides how fast to act and what happens next. Sudden weakness with a drooping face or slurred speech, or with numbness around your bottom or bladder or bowel changes, needs 999; weakness that is getting worse needs help the same day; any new foot drop needs a GP. This guide explains the causes and the outlook, braces and electrical stimulation, and gives a staged plan with 3D demos to keep the ankle moving and the leg strong while the nerve recovers, as your team allows.
Exercise is for pain that has been checked or is clearly mild and settling.
Foot drop, also called drop foot, means it's difficult to lift the front of your foot and toes. It usually affects one foot and changes the way you walk: the toes catch, the foot slaps down, or you lift your knee higher to clear the ground. It's a sign rather than a diagnosis, and the cause decides what happens next.
Source 1
The NHS says the commonest cause is an injury to a nerve that runs down the leg and controls the muscles that lift the foot. The common peroneal (fibular) nerve wraps around the outer knee just below the joint, where it is easily squeezed. Peroneal nerve palsy is the commonest trapped nerve in the leg, usually from pressure at the top of the fibula, the thin outer shin bone. Triggers include crossing your legs, kneeling or squatting for long periods, sports injuries, hip or knee replacement, and long spells not moving, for example in hospital. Rapid weight loss raises the risk: two people losing weight quickly developed foot drop from habitual leg crossing.
A slipped disc pressing on a nerve root in the lower back is another cause. In 918 people having surgery for foot drop from wear and tear in the lower back, 79% had a slipped (herniated) disc and 22% a narrowed spinal canal.
Less often it comes from nerve damage from diabetes (peripheral neuropathy); the brain or spinal cord, after a stroke or with cerebral palsy, Parkinson's disease or MS; or inherited nerve and muscle conditions such as Charcot-Marie-Tooth disease, muscular dystrophy, spinal muscular atrophy and motor neurone disease.
Serious outer-knee injuries can stretch or tear the nerve: it was injured in 16 of 61 operated injuries to the outer corner of the knee (26%), and in 31% of injuries to several ligaments that involved that corner, against 4% of those that didn't.
The NHS foot drop page says to see a GP if you find it difficult to lift the front of your foot and toes. Our reading of NHS physiotherapy leaflets and our knee guides adds: get help the same day if the weakness is getting worse, or if it follows an injury to the outer knee.
Call 999 if it comes on suddenly with a drooping face, an arm you can't lift or slurred speech (signs of a stroke), or with back pain and numbness around your bottom or genitals, or bladder or bowel changes (signs of cauda equina syndrome).
For everyone else, our suggestion is to book a GP appointment promptly rather than wait: when a slipped disc is the cause, people treated within about 6 weeks recovered more in studies of surgery.
A GP examines your leg and foot and watches you walk, and may refer you for tests. Clinicians check which muscles are weak and where the skin is numb, to tell a problem at the knee from one in the back or the brain. Nerve conduction studies and electromyography (EMG, which records the electrical activity in muscles) help find the problem and judge the outlook; they're usually done a few weeks after it starts, once the changes have had time to show.
An MRI (magnetic resonance imaging) scan of the lower back is used when a nerve root is suspected. Disc changes are common in people without symptoms: disc bulges in 30% of 20-year-olds rising to 84% of 80-year-olds, and protrusions in 29% to 43%. So a bulge on a scan is only part of the picture.
Squeezed at the knee: most people recover over months, in case series. In an Italian study that followed 49 people with a squeezed peroneal nerve, strength, nerve tests and disability all improved, and stronger shin muscles and faster nerve conduction at the start predicted a better recovery. In 39 people with fibular nerve damage, everyone whose nerve was compressed without an injury had a good outcome. A series that mixed 25 peroneal and 58 radial nerve palsies found about 9 in 10 with good strength at an average follow-up of 8.9 months: that is when they were checked, not how long recovery took.
Injured in a knee injury: partial nerve injuries recovered fully in the series we found, but complete ones mostly didn't (12% regained function in one series), and nerve surgery worked better for nerves that were still intact than for long gaps.
From the lower back: after surgery to take pressure off the nerve, 60% recovered good strength and 82% improved by at least one grade, and people treated within about 6 weeks, with some strength left and at a younger age, recovered more. These are observational studies: they show that timing and severity matter, not that every foot drop needs surgery.
From a stroke or MS: foot drop reflects the underlying condition, and braces and electrical stimulation are about walking safely rather than a cure. Our stroke and MS exercise guides cover the wider rehabilitation.
How foot drop is treated depends on the cause and how long you've had it, and sometimes it gets better on its own. For a squeezed peroneal nerve, a review says many people do well with changes to activity, a brace, physiotherapy and medicines. Surgery to free the nerve is considered when it doesn't recover, or for a lump pressing on the nerve, a cut nerve or severe changes on nerve tests, and tendon or nerve transfers when recovery is unlikely. For permanent foot drop, the NHS lists surgery to fuse the ankle and foot joints or to repair or graft the nerve.
An ankle-foot orthosis (AFO) is a brace that holds the foot up as you walk. The stroke rehabilitation guideline from NICE (the National Institute for Health and Care Excellence) says to consider one for people who trip or have poor control of the ankle after a stroke, fitted and reviewed by qualified staff.
After stroke, 13 crossover trials (334 people) found an AFO improved walking and balance straight away, and a meta-analysis of 19 studies (434 people) found faster walking and longer steps; only short-term effects have been studied. Some people with a lasting peroneal nerve palsy choose an AFO as their long-term solution. Evidence for other causes is thin, but the brace's job, lifting the toes clear, is the same.
Functional electrical stimulation (FES) uses small electrical pulses to the nerve to lift the foot as you step. NICE says the evidence supports it for foot drop caused by the brain or spinal cord, as after a stroke or with cerebral palsy, MS or a spinal cord injury, and that it is not normally suitable when the damage is in the nerve to the muscle, as with a squeezed peroneal nerve or a trapped nerve root.
After a stroke, FES and an AFO improve walking about equally: in a trial of 197 people over 30 weeks, both improved walking speed by similar amounts and FES users were more satisfied; in 495 people, FES was as good as the AFO at 6 months; and meta-analyses of 7 trials and 5 trials found equal improvements.
The NHS lists physiotherapy to strengthen or stretch the muscles of the leg and foot. No trial has tested exercise for foot drop from a nerve injury; in the Italian study, rehabilitation seemed to help walking, though the link was unclear.
Exercise can't make a nerve regrow faster. What it sensibly does is stop the calf tightening and the ankle stiffening, keep the rest of the leg strong, train balance and safe walking, and strengthen the shin and outer ankle muscles as movement returns. The doses in the plan below are editorial.
In 20 studies (918 people), 60% recovered good strength after decompression surgery, 82% improved by at least one grade, and 18% didn't improve. In individual data from 96 people, being 47 or younger, symptoms for 6 weeks or less, some remaining strength and early improvement predicted more recovery, and those operated on within 6 weeks were up to 6 times more likely to recover more.
In 71 people, half of those who improved had started to within about 6 weeks of the operation, and in 20 people with painless foot drop, a longer palsy did worse. These are observational studies. Our sciatica guide covers the wider evidence on surgery.
In 318 operated peroneal nerve injuries at the knee, freeing a nerve that still conducted signals restored useful function in 88%, direct repair in 84%, short grafts in 75%, and longer grafts in 16% to 38%. After serious outer-knee injuries with a complete palsy, surgeons recommend a long trial of non-surgical care before nerve or tendon surgery.
The NHS advises avoiding crossing your legs and long spells kneeling or squatting, and warns that foot drop raises the risk of trips and falls: wear well-fitting, supportive shoes, use a walking aid if you need one, clear the floors, light the house well and fit handrails. In two people who developed foot drop while losing weight quickly, stopping leg crossing, with physiotherapy and in one case a brace, was followed by recovery over 3 to 4 months.
Pain is rarely the limit with foot drop; weakness, tiredness and safety are. With back pain or sciatica, the NHS says moving is not harmful even if it hurts. Ease off any exercise that sends pain further down the leg or brings on more numbness or weakness, and come back to it in a smaller range (our sciatica guide's rule).
For every cause (our suggestion): stop a walking, standing or balance exercise when your toes start to catch, your foot starts to slap, or you need to hitch your hip to clear the floor. That's tiredness, and it raises the trip risk. Rest, and do a little less next time.
Leg weakness that is getting worse isn't a pain-rule question: get help the same day. And if the top of your foot is numb, pain won't warn you about rubbing from a brace or shoe, so check your skin after exercise.
Start at the first stage. Each move opens a full guide with a 3D demo.
Stop the calf tightening and the ankle stiffening while the shin muscles are weak, keep the hip, knee and calf strong, and stay safe on your feet. Wear your brace and supportive shoes for walking if you have them. After a nerve injury, surgery or a cast, follow your team's plan; after a stroke or with MS, our stroke and MS exercise guides come first. Add the helped ankle lifts (written steps below).
3D demoSeated calf stretch with a towelBeginner · Other / check instructionsHold 30 s, 3 times, once or twice a day · Editorial dose. The NHS lists stretching the leg and foot muscles
3D demoAnkle circlesBeginner · No equipment10 slow circles each way; if the foot can't lift, help it round with your hands or a towel · The move page's dose
3D demoSeated marchBeginner · A bench or box1 to 2 minutes, or 5 lifts each leg · The move page's dose
Harder: Standing march
3D demoSit to stand from a chairBeginner · A bench or box2 sets of 5 to 8, feet flat, in your shoes and brace · Editorial dose
Easier: Sit to stand, pushing on the thighs · Harder: Bodyweight squat
3D demoSemi-tandem stanceBeginner · A wall3 holds of 10 s each way, a hand on the counter · Editorial dose
3D demoStationary cyclingBeginner · Cardio machine10 to 20 minutes, with a toe strap to keep the foot on the pedal · Editorial dose
Easier: Recumbent exercise bike · Harder: Air bike intervals
Move on when: You can lift the front of your foot a little on your own when sitting.
Strengthen the returning shin and outer ankle muscles (the peroneal nerve supplies both), keep the calf supple and strong, and train balance.
3D demoTibialis raiseBeginner · No equipmentOne foot at a time, sitting, heel on the floor: 2 sets of 8 to 12 · Editorial dose, starting with the move's own easier version; move to the standing version when you can lift fully while sitting
Harder: Single-leg tibialis raise
3D demoIsometric ankle eversion against a wallBeginner · A wall + A bench or boxPress the outside of the foot into a wall for about 6 s, 8 to 12 times · Editorial dose, as the move's steps describe
Harder: Band ankle eversion
3D demoBand ankle eversionBeginner · A band + A bench or box2 sets of 10 with a light band, once the wall press is easy · Editorial dose
Easier: Isometric ankle eversion against a wall · Harder: Single-leg stand
3D demoWall calf stretch (gastrocnemius)Beginner · A wallHold 30 s, 3 times, once you're steady standing · Editorial dose
Easier: Seated calf stretch with a towel · Harder: Heel-on-step calf and hamstring stretch
3D demoSlow calf raiseBeginner · A wall2 sets of 10 on both feet, a hand on the wall · Editorial dose. The calf is usually spared, and it powers your push-off
Easier: Seated bent-knee calf raise (soleus raise) · Harder: Standing dumbbell calf raise
3D demoSingle-leg standBeginner · A wall3 holds of 10 to 20 s on each leg, beside a counter, with your brace if you have one · Editorial dose
Easier: Tandem stance and heel-to-toe walk · Harder: Single-leg reach matrix
Move on when: You can lift the front of the foot fully against gravity several times, and walk short distances without catching your toes, with or without the brace.
Strength and endurance in the lifting muscles, and safe walking on stairs, slopes and uneven ground.
3D demoSingle-leg tibialis raiseIntermediate · No equipment2 sets of 8 to 12 · Editorial dose
Easier: Tibialis raise
3D demoHeel walkBeginner · No equipment2 to 3 lengths of a room, beside a wall · Editorial dose
Easier: Tibialis raise · Harder: Single-leg tibialis raise
3D demoTandem stance and heel-to-toe walkBeginner · A wallHold 10 to 20 s each way, then 10 heel-to-toe steps beside a wall · Editorial dose
Easier: Semi-tandem stance · Harder: Single-leg stand
3D demoStep-upBeginner · A step2 sets of 8 on each leg, on a low step, holding a rail · Editorial dose
Easier: Low step-up · Harder: Dumbbell step-up
3D demoBand ankle eversionBeginner · A band + A bench or box3 sets of 12 to 15 with a firmer band · Editorial dose
Easier: Isometric ankle eversion against a wall · Harder: Single-leg stand
3D demoTreadmill walkingBeginner · Cardio machineBuild time, then pace, then slopes and uneven ground, as your therapist advises · Editorial dose
Harder: Treadmill jogging
Move on when: Keep going. Ask your therapist or orthotist before you stop using the brace. The foot and ankle strengthening routine and the balance exercises routine take it further; leave out ankle bounces until hopping is easy and safe.
Editorial steps for a foot that can't lift on its own yet, done in stage 1 alongside the ankle circles.
Editorial, for anyone with a numb foot or a brace.
From the NHS foot drop page and a case series, with our suggestion marked.
The NHS foot drop page's advice: foot drop raises the risk of tripping and falling.
Source 1
| Habit or position | Why it matters | Instead |
|---|---|---|
| Crossing your legs | It squeezes the peroneal nerve at the outer knee. | Sit with both feet flat on the floor. |
| Long spells kneeling or squatting | The NHS lists it as a cause. | Sit on a low stool, or kneel on one knee for short spells. |
| Anything pressing on the outer knee just below the joint | Pressure at the top of the fibula is the commonest cause of peroneal nerve palsy. | Loosen tight straps or supports, and tell your team if a cast or brace presses there. |
| Walking barefoot or in loose slippers | Foot drop raises the risk of trips and falls. | Supportive, well-fitting shoes, and your brace. |
| Walking on until your toes start catching | Tiredness raises the trip risk (our suggestion). | Shorter walks with rests, building up gradually. |
| Hopping and bounding drills before the foot lifts reliably | A risk of falls and sprains (our suggestion). | Balance work first, and heel walks later.Try: Single-leg stand |
| Ignoring numb skin under a brace or shoe | Pressure marks can turn into sores when you can't feel them (our suggestion). | The nightly skin check. |
| Waiting months with back pain and a new foot drop | In studies of surgery, a longer foot drop went with less recovery. | See a GP promptly, and the same day if it's getting worse. |
A 35-minute home routine for numb feet: seated ankle work, leg strength and balance at a counter, then a walk, with shoes on and a foot check before and after.
35 minBeginner13 movesA bench or box, Something with weightA 15-minute barefoot routine for stronger toes, arches, calves and ankles, finishing with balance. You need only a towel, a wall and a resistance band.
15 minBeginner11 movesA wall, Other / check instructionsBalance practice in 10 minutes: tandem stance, single-leg stands, marches, heel walks, tree pose and floor transfers.
10 minBeginner7 movesA wall, A bench or boxStrength and balance in one session: squats, Romanian deadlifts, push-ups, rows, step-ups, back extensions, carries and single-leg balance.
45 minBeginner14 movesA wall, A dumbbellA gentle 20-minute routine for home after a stroke: moves on the bed, in a chair and standing at a chair, then a short walk. Do the parts your team has agreed.
20 minBeginner12 movesA bench or box, Something with weightA 25-minute workout done sitting, in a chair or wheelchair: seated cardio intervals, light strength work, posture and stretches, with pacing and cooling built in.
25 minBeginner14 movesA bench or box, A dumbbellDifficulty lifting the front of your foot and toes, so your toes catch or your foot slaps down when you walk. It usually affects one foot, and it is a sign of a problem rather than a diagnosis.
Most often an injured or squeezed nerve: the nerve at the outer knee (from crossing your legs, kneeling or squatting for long, an injury, or after a hip or knee replacement) or a nerve root in the lower back from a slipped disc. Less often it comes from diabetes, a stroke, MS or other nerve and muscle conditions.
Sometimes. Call 999 if it comes on suddenly with a drooping face, arm weakness or slurred speech, or with back pain and numbness around your bottom or bladder or bowel changes. Our reading of NHS leaflets and our knee guides is to get help the same day if the weakness is getting worse or follows an injury to the outer knee; otherwise, the NHS says to see a GP.
Often, depending on the cause. When the nerve at the knee has been squeezed rather than injured, most people recover over months in case series. A torn nerve, or long-standing pressure on a nerve root in the back, is less likely to recover fully.
Usually months, and it depends on the cause, so nobody can give you a date. In case series of squeezed nerves at the knee, most people had good strength again when they were checked months later. With foot drop from a slipped disc treated with surgery, half of those who improved had started to within about 6 weeks of the operation.
Yes: a slipped disc pressing on a nerve root in the lower back is one of the causes. If it happens, see a GP promptly, because in studies of surgery, people treated within about 6 weeks and with some strength left recovered more. Our sciatica guide covers the rest.
An ankle-foot orthosis (AFO), fitted by an orthotist or physiotherapist, holds the foot up as you walk; NICE suggests considering one after a stroke for tripping or poor control. Off-the-shelf braces vary, and a professional fitting matters because a brace that rubs can damage numb skin.
For foot drop caused by a stroke, MS or another brain or spinal cord condition, functional electrical stimulation helps walking about as much as a brace. It isn't normally suitable when the nerve at the knee or in the back is damaged.
Calf stretches and ankle movement to stop stiffness, strength work for the hip, knee and calf, balance practice with support, and shin-lifting exercises as movement returns. No trial has tested a specific programme for foot drop from a nerve injury, so a physiotherapist should guide it.
Yes: crossing your legs is a recognised cause, and two people who lost weight quickly while habitually crossing their legs developed foot drop. It recovered over 3 to 4 months once they stopped.
Most foot drop from a squeezed nerve at the knee is treated without surgery. Surgery is considered when the nerve has been cut or doesn't recover, when a lump is pressing on it, or for a disc in the back, and tendon transfers and joint fusion are options for permanent foot drop.
Exercise education, not a diagnosis or treatment plan. It is written from the guidelines and studies listed above; review by a clinician is pending. If your pain follows an injury, is severe, is getting worse, or comes with any warning sign listed on this page, get it assessed. Health disclaimer.
