Pulled Hammy or Something Else? Understanding Hamstring Pain
Hamstring injuries are among the most common problems we treat at 4DHP, from weekend runners to field-sport athletes. Not all hamstring pain is a "pulled hammy," though. The two main culprits are tendinopathy and muscle strain. They look different, behave differently, and need different management.
A Quick Anatomy Refresher
Three muscles make up the hamstrings. They attach at the sit bone (ischial tuberosity) at the top, cross the knee, and attach to the tibia and fibula below. Their job is to extend the hip and bend the knee, which means they're working hard every time you run, jump, or sprint.
Hamstring Tendinopathy: The Slow Burn
Tendinopathy develops when a tendon is loaded more than it can tolerate, repeatedly, over time. There's no single moment of injury. Pain creeps in over weeks. Where you feel it depends on which end of the hamstring has been overloaded.
- Deep ache in the lower buttock or around the sit bone
- Worse with sitting, especially on hard chairs or in the car
- Flared by hills, lunges, deep squats, and stretching into hip flexion
- Often eases once warmed up, then aches afterwards or the next morning
- Pain behind the knee, on the inner or outer side
- Aggravated by running, sprinting, and loaded knee bending
- Morning stiffness and soreness after training
- Builds gradually with volume rather than from a single incident
Common Triggers
Hamstring Strain: The Sudden Hit
A strain is an acute tear of the muscle fibres. It happens in a single moment when the load on the muscle exceeds what it can handle. The onset is sharp and unmistakable, usually mid-run or mid-movement, and often with a clear "something just went" sensation.
What It Feels Like
- Sharp, sudden pain at the back of the thigh, sometimes with a "pop"
- Bruising and swelling over the following days
- Weakness and difficulty walking normally
How It Happens
How Severe Is It?
Grading matters
We grade hamstring strains using the British Athletics Muscle Injury Classification (BAMIC), from Grade 0 through to Grade 4 (complete rupture). The grading also considers where the tear sits. Injuries that extend into the tendon generally take longer to return from than injuries confined to the muscle belly.
Accurate grading matters because it's what lets us set realistic return-to-sport timeframes, instead of guessing.
Tingling or shooting pain down the leg after a hamstring injury can mean swelling is irritating the sciatic nerve. This should be assessed promptly rather than waited out.
Side by Side
When patients ask us how to tell what they've got, this is usually the quickest way to work it out.
Do You Need a Scan?
Most hamstring injuries can be diagnosed with a thorough clinical assessment. Imaging is worth considering when:
- The injury appears severe or involves the tendon
- You have a competition or deadline and need a precise return timeline
- Recovery isn't progressing the way we'd expect
MRI gives the most detail for grading strains. Ultrasound is a faster, more accessible option for assessing tendons.
How We Manage It at 4DHP
Our physiotherapists, exercise physiologists, chiropractors, and strength and conditioning coaches work as one team, so your rehab flows from first appointment to full performance.
Dealing With Hamstring Pain?
Whether it came on suddenly during a sprint or has been quietly building for weeks, our team can work out what's going on and build a structured plan to get you back to training with confidence.