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Most hamstring strains happen in about a second and a half. You're sprinting for the ball at Saturday footy, or chasing a kid across the oval, or just stepping up the pace in the last stretch of a run, and then there's a sharp grab at the back of your thigh. Some people say it feels like being hit with a cricket ball. Others hear or feel a pop. Almost everyone pulls up, grabs the leg and says a word they'd rather their kids didn't hear.
The injury itself is bad enough. What frustrates people more is what comes next. The leg settles after a week or two, you go back to playing, and three weeks later it goes again, usually worse. If that sounds familiar, this guide is for you. It's also for anyone in Truganina or Tarneit who has just done a hamstring and wants to know what to do tonight, what to do this week, and how to stop it becoming a habit.
We'll cover what the hamstrings actually are, how strains are graded, what you can reasonably do at home in the first few days, why re-injury is so common, what rehab should include, and how to tell when you're genuinely ready to sprint again. We'll also be upfront about the parts of the research that are solid and the parts that are still argued about.
"The hamstring" is really a group of three muscles that run down the back of your thigh: biceps femoris on the outer side, and semitendinosus and semimembranosus on the inner side. They start at the sitting bone at the bottom of your pelvis and cross both the hip and the knee before attaching below the knee joint.
That two-joint arrangement matters. The hamstrings extend your hip (pulling your leg back behind you) and bend your knee. When you run, they do something less obvious and far more demanding. In the late swing phase of each stride, just before your foot hits the ground, your leg is flying forward and the hamstrings have to slow it down. They are lengthening while they are working hard, which is called an eccentric contraction. They're acting as a brake on a fast-moving leg.
This is why the injury clusters in sprinting, kicking and sudden acceleration. The muscle is being stretched to a long length at the same moment it's being asked to produce a lot of force. If the demand outstrips what the muscle can handle on that day, fibres tear. Most commonly the damage sits in the biceps femoris, near where the muscle fibres blend into a tendon. Occasionally it's closer to the sitting bone, and those injuries tend to be slower and more stubborn.
There's a second, less common pattern: strains that happen during slow, deep stretching rather than sprinting. Think high kicks, splits, or a slip where the leg goes out in front of you. These tend to involve the semimembranosus and the tendon near the sitting bone, and they often take longer to settle. If your injury didn't happen at speed, mention that to your physio, because it can change the plan.
Truganina and Tarneit are young, active suburbs. There's no shortage of local footy, soccer and cricket clubs, athletics and park running, and plenty of people who haven't done much for months and then sign up for a fun run or join a social team. The hamstring is the classic injury of all of these groups.
The usual suspects are footballers and soccer players, sprinters and middle-distance runners, and anyone doing sudden stop-start work such as touch footy, futsal or netball. But it isn't only athletes. We also see tradies who've slipped on a wet slab, parents who sprinted after a toddler heading for the road, and people who've gone hard at a gym session after a long break and tried to do too much too soon.
A few things raise the odds of straining a hamstring. A previous hamstring injury is the strongest, and we'll come back to why. Age is another: the risk climbs as we get older, partly because we lose some muscle strength and power over time. Fatigue matters too. A lot of strains happen late in a game or session, when the muscle is tired and technique loosens. And a sudden jump in load, like going from two easy runs a week to a speed session, catches people out.
The old advice that tight hamstrings cause strains, so you should stretch more, is not well supported. Flexibility on its own is not a strong predictor. Strength, especially strength at long muscle lengths, and how well your training load has been built up, seem to matter more.
Physios and doctors usually describe strains in three grades. The grading is a rough guide to how much of the muscle is damaged, and it's the main factor in how long recovery takes.
Timeframes in the published material vary a lot, and you'll see wildly different numbers depending on which website you read. Broadly, a mild strain is commonly quoted as taking one to three weeks, a moderate one around four to eight weeks, and severe injuries many weeks to months, with some sources quoting up to six months or more for a full rupture. Treat those as ballparks. Your own timeline depends on where the injury is, how you respond, what you do for a living, the sport you're returning to, and whether you've done this before.
One thing worth knowing: the grade you feel on day one isn't always the grade the injury turns out to be. People often underestimate. A "bit of tightness" that you try to run off on the weekend can turn into a proper tear by Monday. If you aren't sure, get it looked at rather than guessing.
Pain at the back of the thigh doesn't always come from the hamstring. A few other things can feel similar, and it's worth separating them.
Referred pain from the lower back or nerve irritation can produce an ache in the back of the thigh without any injury to the muscle. A real strain tends to have a clear moment of onset, pain you can point to with a finger, and pain that reproduces when you stretch the muscle or push against resistance with your knee bent. Nerve-related pain is more likely to be vague, to travel, to come with tingling or numbness, and to be affected by how you sit or bend your back. If that sounds more like you, our guide to sciatica and leg pain covers how to tell the difference.
Pain right at the sitting bone, especially when you sit on a hard surface or after long drives, can be a hamstring tendon problem rather than a muscle tear. That one is more of a gradual overload issue than a sudden injury, and it responds to a different kind of loading program.
Pain in the back of the knee or calf might be a calf strain, a Baker's cyst or, rarely, a clot in the leg. If your calf is swollen, hot, red and tender, especially after a long flight or period of immobility, get seen urgently.
The old "RICE" routine (rest, ice, compression, elevation) has been rethought over the last decade or so. Sports medicine now tends to favour a gentler approach to the first few days, summarised in various acronyms. The practical version is simpler than any of them.
Stop what you were doing straight away. Pushing through a hamstring strain is how a Grade 1 becomes a Grade 2. Take the load off for the first day or two, but don't treat bed rest as the goal. Walk gently as pain allows, with a shorter stride if needed. Short, comfortable walks keep the area moving and tend to be better than sitting still for days.
Ice for comfort is fine if you find it helps, and so is a compression bandage or shorts. Neither will make or break the outcome. What you want to avoid in the first few days is anything that aggressively stretches or massages the injured area. Deep massage and hard stretching in the first 48 to 72 hours can increase bleeding in the muscle. Keep it gentle until the initial inflammation settles.
Over-the-counter painkillers are a decision for you and your GP or pharmacist, particularly if you have any other health conditions or take other medications. Some people avoid anti-inflammatory tablets in the first couple of days, because there's an argument that inflammation is part of normal healing, but this is not settled and the practical difference is likely small. Ask a health professional about what suits you.
Crutches are not usually needed for a mild strain. For a moderate or severe one where walking is painful, they can help for a few days. If you can't walk without a significant limp or can't put weight on the leg, that's a reason to be seen sooner.
You don't need a referral to see a physio. For most strains, a physio is the right first stop, and an early assessment (within the first several days) is useful for working out how bad it is and what the plan should be.
See a doctor or go to an emergency department promptly if you heard or felt a significant pop, there's a visible gap or lump in the muscle, the bruising is extensive, you can't bear weight, your leg is numb or tingly, or you have signs of a blood clot such as a swollen, hot, tender calf. A complete tear at the sitting bone attachment is one of the injuries where timing can matter, because surgical repair tends to work better when it's done early rather than months later.
For the large majority of strains, imaging such as ultrasound or MRI isn't needed for the first assessment. A good clinical examination tells your physio most of what they need. Scans become useful when the diagnosis is uncertain, when the injury is severe or involves the tendon near the sitting bone, or when recovery stalls and you aren't progressing as expected. In elite sport, MRI is used to help predict return times, but its predictive value for everyday recreational players is more limited.
At our clinic, hamstring injuries sit within our sports physiotherapy work, and you can book at either our Truganina clinic or our Tarneit clinic.
People often wonder what will actually happen, so here's the usual shape of it.
First comes the conversation. Your physio will ask how it happened, what you were doing, what it felt like at the time, whether you've hurt the same leg before, what your training or sport looks like, and what you want to get back to. This part matters more than people expect. The mechanism (sprinting versus stretching), the location of the pain and your history all shape the diagnosis and the timeline.
Then the examination. You'll be asked to walk, perhaps squat or do a gentle bridge, and then lie down so the physio can feel along the muscle for the tender spot, check for swelling, bruising or a defect, and test how far you can raise the leg straight and how it feels to push against resistance with your knee bent at different angles. They'll also check your lower back, hip and the nerve itself, because those can mimic or contribute to hamstring pain.
Pain on stretching and resisted contraction, tenderness at a specific point and a clear injury story all point towards a strain. Your physio can then give you a working grade and, importantly, a rough sense of the likely timeline, with the caveat that it's an estimate which gets sharper once you see how the first week goes.
Finally, a plan. In the early stage that usually means what to do and avoid over the next few days, a few gentle movements to start, and a rough outline of what the next phases will look like. You should leave knowing why you're doing each thing, not just a sheet of exercises.
Re-injury is the defining problem with this injury. In professional football and athletics, studies commonly report that a notable share of hamstring strains recur, with figures often quoted somewhere between 12 and 30 percent depending on the sport and the study. Recurrences also tend to be at least as severe as the first injury and sometimes worse. We don't have a precise number for recreational players in Melbourne's west, and it would be dishonest to pretend we did, but the pattern is clearly familiar to anyone who has treated a lot of them.
There are a few reasons the muscle gets hurt again.
Returning on feel rather than function. The pain goes away well before the muscle is back to full capacity. Walking pain-free at two weeks doesn't mean the hamstring can handle a flat-out sprint. One of the better-documented findings is that eccentric strength (the braking strength we talked about earlier) can remain reduced after a player is cleared to return, and this lingering deficit is thought to be one reason the injury recurs.
Scar tissue and altered mechanics. The repaired area heals with tissue that isn't identical to the original. Without progressive loading, it may stay less able to tolerate stretch and force than the surrounding muscle, so the weak point is now in a specific spot.
Rushing the speed work. Sprinting is the highest-risk activity for the hamstring, and it's also what people want to do first. Returning to full-speed running before the muscle has been exposed to progressively faster running is among the most common causes of a repeat strain.
Fixing the leg and ignoring the system. The hamstring sits between the lower back, pelvis, hip and knee. If trunk control, glute strength, or pelvic position has been poor, the hamstring may be doing more work than it should. Good rehab looks at the whole chain, not just the sore patch.
The good news is that rehab done well seems to reduce the risk. The evidence base isn't perfect, but there's reasonable agreement that a progressive program built around strengthening the muscle at long lengths, followed by a graded return to running speed, gives you the best chance.
Good hamstring rehab is progressive and criteria-based. That means you move to the next stage when you can do the current one well, not when a calendar says so. Here's how that tends to look.
The aim is to calm things down while keeping the leg moving. Gentle walking, easy range-of-movement work and pain-free isometric holds (pushing the heel into a surface without moving the leg) get the muscle working without stressing the healing fibres. Isometrics can also reduce pain. In a mild strain you may be through this stage in a few days. In a moderate one it can take longer.
As soreness eases, the load increases. Typical exercises include bridges (starting with both legs and progressing to one leg), gentle hamstring curls with a band or a slider, and hip hinge patterns such as Romanian deadlifts with light weight. We also work the glutes, calves and trunk, because they share the load. Cycling on an exercise bike and walking uphill are useful for keeping fitness ticking over without sprint-type stress.
Pain guides the dose. A mild ache that settles within a day is generally acceptable. Sharp pain, or soreness that's worse the next morning, means you've done too much and should back off a notch.
This is the phase that separates a good rehab from a quick one. The muscle needs to get strong while lengthened, because that's where it gets injured. Examples include slow, controlled Romanian deadlifts at heavier loads, single-leg deadlift variations, slider leg curls, and the Nordic hamstring exercise, where you kneel with your ankles anchored and lower your body forward as slowly as you can, controlling the descent with your hamstrings.
The Nordic curl has the strongest research behind it for reducing the chance of a first hamstring strain, with several trials and reviews in football players suggesting a substantial reduction in injury rates when it's done consistently. You'll sometimes see figures like a 50 percent reduction quoted. Be a little cautious with the exact number. The studies vary, many were in football, and compliance in real life is often lower than in trials. What does seem consistent is that the benefit depends on actually doing it regularly, and the effect fades if people stop.
The Nordic exercise isn't gentle. It produces a lot of muscle soreness if you jump in too heavy, so it's usually introduced gradually, starting with small ranges and low volume, and some people with a recent injury are given other eccentric work first. Your physio will decide when it's appropriate for you.
Running comes back in stages. A typical progression moves from jogging, to controlled striding at moderate pace, to build-up runs where you accelerate gradually over 50 to 80 metres, and only later to maximum-effort sprints, changes of direction and sport-specific drills. Each step should be pain-free and followed by a normal next day.
The key point is that top-speed running is exposed in small doses before you return to sport. If the first time your hamstring sees a flat-out sprint is during a game, it's been a surprise exam with no revision.
Return to training comes before return to games. A sensible sequence is non-contact training, full training, then a reduced-minutes game and then full match load. After that, the strength work should continue. Dropping your hamstring program the moment you're cleared is one of the most common mistakes, and it undoes a lot of the protection you built.
"Is it still sore?" is a poor test on its own. Better questions are more concrete.
Can you walk, jog and stride at pace without pain or protective tightness? Can you do a single-leg bridge or hamstring curl on the injured side to a similar level as the other leg, ideally within roughly 10 to 20 percent? Can you do a full stretch test, with similar range on both sides and no pain at the end? Can you sprint at close to maximum effort, in a straight line first, and then with changes of direction, and feel confident rather than guarded? Can you do the sport-specific movements, such as kicking, cutting or jumping, without hesitation?
Strength testing can be done with hand-held dynamometers or simple field tests, and many physios use hop and curl tests as well. The specific cut-offs vary between clinics and sports. In elite programs, a strength deficit under about 20 percent compared with the other leg is often used as a threshold, though research on exactly which numbers best predict re-injury is still developing. No single test settles it. The point is to look at several measures together and to be honest about the demands of your sport.
Confidence matters too. Many people return physically ready but psychologically hesitant, and that's reasonable. A staged return, with the opportunity to run at speed in training before a match, helps rebuild trust in the leg.
Stretching a fresh strain. Hard stretching in the first few days can aggravate the tear. Save it for later, and when you do stretch, keep it comfortable.
Resting completely for weeks. The muscle weakens quickly without load. Some rest early on is sensible, but long periods of doing nothing mean you start rehab from further back.
Returning because the pain has gone. By far the most common reason for round two. Function, strength and sprint tolerance should lead the decision, not the absence of pain alone.
Skipping the boring strength work. The glute bridge and Romanian deadlift aren't exciting. They're also doing most of the work in protecting you.
Doing the program once and stopping. A hamstring that has been injured once is more likely to be injured again. A maintenance routine of one or two strength sessions a week, including some eccentric work, is cheap insurance.
Ignoring the wider picture. If your running technique, trunk control or training schedule contributed to the injury and nobody changes them, you're likely to see the same result again.
It's fair to ask what a physio adds beyond a list of exercises you could find online. The honest answer is mostly three things.
The first is accurate diagnosis and grading, so you're not rehabbing a back problem as a hamstring or missing a tear that needs a surgeon. The second is dosing: knowing when to push and when to hold back, adjusting the load week by week based on how you respond. That's hard to do alone, and getting it wrong in either direction costs time. The third is the return-to-sport framework, including testing, so the decision about when you're ready doesn't rest on your gut feeling after a fortnight of watching the footy from the sidelines.
Hands-on techniques such as soft tissue work can help with comfort in the later stages of recovery and can make it easier to get into the exercises, but they are an add-on rather than the treatment. Dry needling is sometimes used for tight, sore muscle areas around the injury, and if you're interested you can read about it in our dry needling guide. Machines such as ultrasound or laser don't have strong evidence as stand-alone fixes for a muscle tear. The things with the strongest support are progressive loading and a well-managed return to running.
Platelet-rich plasma (PRP) injections come up now and then. The research so far has been mixed, and several trials haven't found a clear benefit over good rehab for acute hamstring tears. If someone suggests one, it's reasonable to ask what the evidence is for your particular injury and what it adds on top of a good loading program.
Not all hamstring pain starts with a bang. Two other patterns are worth mentioning.
Proximal hamstring tendinopathy. This is a gradual, deep ache at the sitting bone, often worse when sitting, driving, climbing stairs or running hills and hard intervals. It behaves a lot like other tendon problems. It's an overload issue, it's slow to settle, and it responds to graded loading and temporary changes to the activities that provoke it, not to rest alone or aggressive stretching, which can actually irritate the tendon by compressing it against the bone. If you've dealt with a stubborn tendon elsewhere, such as the Achilles, the principles are very similar: load it progressively, be patient, and expect weeks to months rather than days.
Chronic or recurrent tightness. Some people live with a nagging, tight hamstring for months. Sometimes this is an old partial tear that never fully rehabilitated. Sometimes it's coming from the lower back, hip, or nerve. A proper assessment can sort out which, and that's worth doing before trying yet another stretching routine.
If you're a runner, you may wonder how a hamstring problem compares with other injuries that show up in the same training blocks. Shin pain, for example, usually builds up gradually over a few weeks of increased load and sits at the front or inner edge of the lower leg, while a hamstring strain is typically sudden and sits at the back of the thigh. We've covered the shin end of things in our shin splints guide. What they share is the underlying theme: most running injuries come down to load exceeding capacity, and most good rehab is about rebuilding capacity gradually.
Prevention for a hamstring comes down to a few habits that are boring and effective.
Build strength in the hamstrings, particularly eccentric and long-length work such as Nordic curls and Romanian deadlifts, at least once or twice a week through the season. Include some sprint exposure in training so that match speed isn't a shock. Increase training load gradually, avoiding big jumps from one week to the next. Warm up properly with progressive running and dynamic movement before hard efforts, rather than static stretching alone. Manage fatigue, since late-game and late-session injuries are common, and treat persistent tightness as information instead of something to run off. Look after the rest of the chain, including glutes, calves, trunk and hips.
None of it is complicated, but the list works only if you keep doing it. The programs that appear to reduce injuries in studies are the ones people stuck with.
To make this less abstract, here's roughly how a moderate (Grade 2) strain might unfold for a recreational footballer. This is an illustration, not a promise. Real timelines move around a lot.
A mild strain might compress that into two to four weeks. A larger or higher injury might take considerably longer. And if something flares along the way, the timeline stretches, which is normal and not a failure.
Not hard, and not early. Gentle movement within comfort is fine from the first days. Aggressive stretching while the tear is fresh can hurt rather than help. As healing progresses, controlled lengthening comes back, but strength at long muscle lengths matters more than raw flexibility.
Generally no, at least not at pace. Easy walking is fine. Jogging can come back once walking is pain-free and you have basic strength, but sprinting should wait. A mild strain that gets pushed often turns into a bigger one.
It depends on grade, location, your sport and how rehab goes. As rough ranges, a few weeks for mild strains and a couple of months for moderate ones, with severe injuries taking longer. Your physio can give you a sharper estimate after assessing you and seeing your first week of response.
Often not. Most strains can be diagnosed and managed clinically. A scan is more useful when the injury is severe, involves the sitting bone attachment, or isn't progressing as expected.
Tightness can linger from muscle guarding, reduced strength, or scar tissue that hasn't been loaded progressively. It can also come from the lower back or nerve. Re-assessing and continuing the strength program usually helps more than stretching alone.
Yes. Keep up a regular strength routine that includes eccentric hamstring work, expose yourself to sprinting gradually in training, and avoid big spikes in load. A history of previous injury is the biggest risk factor, so ongoing maintenance is worth the effort.
No. You can book directly. If you're claiming through private health, Medicare programs, or another funding stream such as WorkCover, bring any paperwork you have, and the front desk can walk you through what applies to your situation.
Young athletes can injure the hamstring attachment at the sitting bone, where the growth plate is still developing, and this can look like a strain but needs different handling. If a teenager has a sudden, severe pain in the buttock or back of the thigh during sport, get it checked rather than assuming it's a simple pull.
If you've just hurt your hamstring, the most useful thing to do this week is to settle it down, keep it gently moving, and get an assessment so you know what you're dealing with. If you're coming back from an old one that keeps flaring, a full review of what happened last time, and what is different this time, is often where the answer lies.
Our physios see hamstring and other muscle injuries at both our Truganina and Tarneit clinics, and the process described in this article is the shape of how we approach it: work out what's injured, load it progressively, test before you sprint, and keep the strength work going after you're back. You can find our locations and contact details on our Truganina and Tarneit pages, or if you'd like to read more about our general approach to injury treatment and return to play, have a look at our sports physiotherapy guide.
A hamstring strain is a tear in one of the three muscles at the back of the thigh, usually during fast running or a stretch. Pain-free walking comes well before full recovery, and returning on feel is the main reason strains recur. Grades range from mild (a few weeks) to severe (months, sometimes surgery), though timelines vary. In the first days, stop, keep gently moving, and avoid hard stretching or deep massage. Good rehab is progressive: gentle movement, then strength, then eccentric and long-length loading including Nordic-style work, then graded running and sprinting, with testing before you return to sport. Keep the strength routine going afterwards. See a doctor promptly for a pop with a visible gap, severe bruising, inability to bear weight, numbness, or signs of a clot. Otherwise, a physio can assess and guide you without a referral.
This article is general information and isn't a substitute for an individual assessment. If you're unsure about your injury, get it checked.
