A deep ache right at the sitting bone, worst after a long drive or a stretch of desk work and nagging during or after a run, is the classic sign of proximal hamstring tendinopathy. It is a common and frustrating cause of buttock pain, often slow to settle, but it responds well to a patient, well-staged plan. Here is what it is, why it happens, and what actually helps.
What is proximal hamstring tendinopathy
Proximal hamstring tendinopathy, also called high hamstring tendinopathy, is an overload problem of the hamstring tendons where they attach to the sitting bone at the base of the buttock. It is common in distance runners and in sprinting, hurdling and change-of-direction sport, but it also affects people who are not athletes, in whom it not uncommonly turns up on both sides. Like other insertional tendon problems, it is driven by a combination of load and compression of the tendon against the bone.
One feature sets it apart: the tendon sits right next to the sciatic nerve, so when the tendon is irritated, scarred or partly torn, the nerve can be drawn in too, adding a more nerve-like quality to the pain that can extend further down the leg.
What it feels like
The typical complaint is a deep, localised pain at the lower buttock, right around the sitting bone, that worsens during or after running, lunging and squatting, and especially with prolonged sitting, which most people identify as the single most provocative thing they do. The pain can spread vaguely down the back of the thigh. It often eases after a warm-up, only to return afterwards. Where the sciatic nerve is involved, the pain can take on a more nerve-like quality and travel further down the leg.
Why it happens
The tendon is compressed against the sitting bone whenever the hip is bent and the trunk leans forward, so the load rises with certain positions and activities. Common contributors include:
- A rapid increase in running volume or intensity, or adding hill and speed work
- Deep loaded hip bending in the gym, such as deep squats, lunges and deadlifts
- Prolonged sitting, particularly on hard surfaces
- Running patterns such as overstriding and leaning forward through the trunk
- Weak gluteal muscles and poor pelvic control, which shift load onto the hamstring origin, and often a prior hamstring strain or low back problem
How it is diagnosed
The diagnosis is clinical, anchored by well-localised tenderness at the sitting bone and pain reproduced by loading the tendon with the hip bent. A clinician will use specific tests that load the tendon in lengthened and compressed positions, along with resisted bending of the knee at different hip angles. Tests that move the nerve help work out whether the sciatic nerve is contributing. Imaging is not always needed, but ultrasound and MRI confirm the tendon changes and any partial tearing, and an MRI is particularly useful for ruling out the more serious alternatives.
What else buttock pain can be
Most pain at the sitting bone is a tendon problem, but the differential matters here. In adolescents, or after a sudden forceful injury, the growth plate or bony attachment can pull away, which needs different handling. Entrapment of the sciatic nerve in the deep buttock, and compression of tissues between the sitting bone and the thigh bone, can both mimic the picture. Referred pain from the lower back, the sacroiliac joint, a bursa at the sitting bone, or a stress injury of the sacrum complete the common alternatives. A full rupture of the hamstring origin is a surgical problem that should not be missed. This is why an accurate diagnosis comes first.
How proximal hamstring tendinopathy is treated
Most cases settle without surgery, but this one rewards patience, because the tendon takes load with almost everything you do, and the sitting bone is hard to offload in daily life. The plan reduces the compression while rebuilding the tendon's capacity in stages.
Reducing the compressive load
In the short term, the aim is to take the squeeze off the tendon: modifying how long and how you sit, easing off deep hip bending, and reducing overstriding when running. For runners, retraining to shorten the stride and lift the cadence lowers the load at the origin. These changes settle the irritation enough for the loading programme to work.
Progressive loading
The core treatment is a graded loading programme that is progressed patiently. It begins with gentle hamstring holds in positions that do not compress the tendon, builds to heavier slow strengthening, and only later introduces the lengthened, compressive positions and the spring-like loading needed for running and sprinting. Rushing the stages is the usual reason it flares, so the progression is deliberately unhurried. Where the nerve is involved, gentle nerve-mobility work is added.
Where shockwave therapy fits
For stubborn cases that have not settled with load management and progressive loading, shockwave therapy is a well-supported adjunct, with direct trial support in athletes. The sitting bone is treated with the hip positioned to bring the tendon under the applicator. Shockwave works by stimulating a stalled healing response, and it is used alongside the loading programme, not in place of it. Cortisone injections are used cautiously here, given how close the sciatic nerve is and the degenerative nature of the tissue. You can read more about how shockwave therapy works and the conditions it suits.
Warning signs to watch for
- A sudden, forceful injury with a pop or tearing sensation at the back of the hip, especially with bruising spreading down the thigh or noticeable weakness, which can indicate a tendon rupture or a bony avulsion and should be assessed quickly, particularly in teenagers
- Pain that travels down the leg with pins and needles, numbness or weakness, which suggests significant nerve involvement and warrants review
- Buttock or thigh pain with bladder or bowel changes, numbness around the saddle area, or weakness in both legs, which is a rare but urgent situation that needs immediate medical attention
- Pain that is constant, present at rest and at night, unrelated to activity, or accompanied by unexplained weight loss or feeling unwell, which should always be checked rather than assumed to be a simple tendon strain
What to expect from treatment
Recovery is often slow and measured in months, which reflects how much the tendon is loaded in everyday life and how hard the sitting bone is to fully offload. The outlook is good when the compressive load is respected and the loading programme is progressed patiently, but the condition is prone to flare and to come back if running and sitting loads are reintroduced too quickly. The patience is the treatment, as much as the exercises are.
Common questions
Why does sitting make it so much worse?
Sitting presses the tendon against the sitting bone, which is exactly the compression that drives the problem. Long periods on hard surfaces are the most provocative. Breaking up sitting and using a cushion can take some of the load off while you recover.
Should I stretch my hamstring?
Usually not aggressively. Stretching loads the tendon in the lengthened, compressed position that aggravates it, so hard stretching often makes things worse. Staged strengthening is the more reliable route.
Why is it taking so long?
The sitting bone takes load with almost everything you do, so the tendon rarely gets a full break, and the loading programme has to be built up in careful stages. Recovery measured in months is normal, and rushing it is the usual cause of setbacks.
Is shockwave therapy worth it?
For stubborn cases that have not settled with loading, shockwave has direct trial support in athletes and is a useful adjunct. It works best combined with the staged loading programme rather than on its own.
If buttock pain is making sitting or running miserable, or it is not settling the way you would expect, it is worth having it properly assessed so the right plan can be put in place. Book a visit and we will work out what is driving it and how to settle it.
