This one has a very particular signature: a deep, nagging ache right where you sit, at the bony point at the base of your buttock. It bites when you sit on a hard chair, when you drive, and when you push the pace in a run or lower into a lunge. It's proximal hamstring tendinopathy, and while it can be a slow burner, it responds well to a patient, well-structured loading plan.
What is it?
Your hamstrings — the three muscles running down the back of your thigh — share a common anchor point on the sitting bone at the base of the pelvis, known as the ischial tuberosity. Proximal hamstring tendinopathy is an overload problem of that shared tendon attachment. As with other tendinopathies, it's driven by more load than the tendon can currently handle, rather than by simple inflammation, with changes to the tendon's collagen structure and cell activity at its point of attachment to bone (Goom et al., 2016).
One feature makes this tendon distinctive compared with others in the body: it's sensitive to compression as well as tension. Positions that press the tendon against the sitting bone — deep hip bends, prolonged sitting, aggressive hamstring stretching — tend to aggravate it, because they combine tensile load with direct compressive pinching of the tendon against bone. That single fact shapes almost everything about how this condition is managed differently from other tendinopathies. The hamstrings themselves are made up of three separate muscles — the biceps femoris, semitendinosus and semimembranosus — which share this common origin before running down the back of the thigh and crossing both the hip and knee joints. Because they cross two joints, they're required to control both hip extension and knee flexion simultaneously during activities like running, which places particularly high and repetitive demand through this shared attachment point compared with single-joint muscles elsewhere in the body.
Why does it happen?
It's common in runners, especially those who do a lot of hill work, sprinting, or interval training, and in anyone who has ramped up activities that load the hamstring in a lengthened position — think lunges, Romanian deadlifts, or hurdling. It also appears, somewhat counterintuitively, in more sedentary people, where long hours of sitting at a desk or during a commute keep the tendon under sustained compression even without any sporting load at all.
As ever, the theme is capacity versus demand. A spike in running volume or hill sessions, a new gym programme heavy in hip-hinge movements, or simply a lot of sitting on hard surfaces during a busy period, can all be the tipping point. Reduced hamstring and gluteal strength, poor running mechanics, and a sudden change in training surface or terrain have all been linked with increased risk. It's also seen in sports involving repeated deep hip flexion under load, such as dance, gymnastics, and field sports with a lot of high-speed sprinting, where the tendon is stretched to end-range while simultaneously bearing significant force.
What does it feel like?
The pain sits deep in the buttock, right near the sitting bone, and it's closely linked to load and to compression. It's typically worse with sitting — particularly on hard chairs, during long car journeys, or on bicycle saddles — and with running, lunging, or bending forward with a straight leg, such as touching your toes. It usually builds gradually over weeks rather than arriving suddenly after a single incident.
Because the sciatic nerve runs directly beneath and alongside this tendon, symptoms can occasionally be confused with, or accompanied by, referred pain from the lower back or irritation of the nerve itself. Sorting one from the other is a key part of the assessment, since the treatment approach differs.
Conditions that can look similar
Deep buttock and upper hamstring pain has a few possible sources. Referred pain from the lumbar spine, particularly from the lower lumbar discs or facet joints, can mimic this condition closely and needs to be screened for. Deep gluteal syndrome, where the sciatic nerve is irritated as it passes through the deep muscles of the buttock, causes a similar deep ache but often comes with more nerve-type symptoms such as tingling down the leg. Ischial bursitis causes more localised, superficial tenderness directly over the sitting bone without the same load-related pattern. And in a traumatic setting, a hamstring tear or partial avulsion from the bone causes a sudden, sharp pain, often with bruising, rather than the gradual onset typical of tendinopathy. Because several of these can coexist or overlap, a careful assessment matters more here than in most tendinopathies. This is different from the picture with a lumbar disc problem, where nerve-type symptoms and the pattern of pain tend to change with spinal movements and positions rather than with hip and hamstring loading specifically.
How we assess it
We'll take a careful history covering your training, your sitting habits and daily routine, and exactly which positions provoke the pain. On examination we'll press directly over the sitting bone to find the tender spot, and use a combination of resisted hamstring tests and specific stretch-based tests — loading the tendon in positions of increasing hip flexion — that reproduce your symptoms and help gauge severity.
We'll also screen your lower back and check the strength and control of the surrounding hip and gluteal muscles, both to confirm the diagnosis and to identify the factors feeding into it, such as pelvic control, running technique and overall hamstring capacity. This broader picture is what allows us to build a plan that addresses the cause, not just the symptom. A specialist tendon health questionnaire can also be used at the start of treatment and repeated periodically, giving an objective score to track alongside your own sense of progress rather than relying on symptoms alone.
How it's treated
Loading is again the foundation of treatment, but with an important twist that reflects this tendon's dislike of compression. We usually start with isometric holds performed in a position of relatively little hip flexion, both for pain relief and to introduce load safely without compressing the tendon excessively. From there we progress through heavier strength work — typically starting in positions with less hip bend and gradually working towards more hip-flexed positions as tolerance improves — and eventually into running- or sport-specific loading as symptoms allow (Goom et al., 2016).
Early in the programme we deliberately avoid deep stretching and heavily bent-hip positions such as touching your toes or deep lunges, because these compress the tendon directly against the sitting bone and can flare symptoms significantly, even though stretching often feels intuitively like the right thing to do. This is one of the more common mistakes people make when self-managing this condition, and it's worth understanding clearly before starting any home exercise.
Hands-on treatment, dry needling, and work on the surrounding gluteal and lower back muscles can help you feel more comfortable and keep moving through the programme, and addressing pelvic and hip control supports the whole posterior chain. As with all tendinopathies, though, these are adjuncts to the loading programme, not a replacement for it. Managing your sitting matters more here than in almost any other injury we treat: softer or contoured seating, breaking up long spells of sitting with regular standing breaks, and avoiding the specific positions that pinch the tendon can make a genuinely meaningful difference to how quickly things calm down, often more so than any single hands-on treatment.
A typical rehabilitation timeline
Because this tendon dislikes both excessive tension and compression, rehabilitation tends to progress in careful stages rather than jumping straight to end-range stretching or heavy hip-hinge work. In the first two to four weeks, the focus is usually on calming irritability with isometric holds performed in positions of minimal hip flexion, combined with strict management of aggravating sitting postures. From around four to eight weeks, most people progress to isotonic strengthening — slow, controlled exercises such as bridges and light Romanian deadlifts performed through a gradually increasing range — building tolerance without pushing into painful end ranges.
From roughly two to four months onward, depending on progress, loading becomes more specific to the person's sport or activity: for runners this might mean gradually reintroducing hill work and stride work, while for those whose main aggravating factor was sitting, the focus shifts more towards building tolerance to prolonged sitting itself. Full return to unrestricted training or sport, including sprinting and plyometric work, is usually the final stage once strength and symptom control have been consistently good for several weeks in a row.
Because this is often a slower-to-resolve tendinopathy than others, such as those at the knee, it's particularly important to track progress with something more objective than day-to-day feel — whether that's a symptom diary, a simple 0–10 pain rating with specific provocative tasks, or a structured outcome measure used in clinic. Seeing gradual, week-on-week improvement is far more reassuring, and far more accurate, than judging progress by any single good or bad day.
What you can do yourself
In the early weeks, focus on protecting the tendon from compression: use a cushion when sitting on hard surfaces, get up and move every 30–45 minutes if you have a desk job, and hold off on aggressive hamstring stretches even though it can feel like the natural thing to do for a tight-feeling area. Keep up your loading programme consistently, and let the 24-hour pain response — some discomfort during exercise is fine as long as it settles by the next day — guide how hard you push each session.
When you return to running, build your volume back gradually rather than jumping straight to your previous level, and be particularly cautious with hills and sprint work early on, as these load the tendon hardest and are the most common triggers for a flare-up during rehabilitation.
When to seek help
See someone if the pain has settled into a clear pattern over a few weeks, is limiting your running or your ability to sit comfortably through a work day, or keeps flaring whenever you train. Seek prompt review after any sudden, forceful injury with bruising and marked weakness in the back of the thigh, which can signal a more serious hamstring tear or tendon avulsion rather than a gradual-onset tendinopathy.
Frequently asked questions
Should I stop sitting as much as possible? You don't need to avoid sitting altogether, but reducing prolonged, uninterrupted sitting on hard or unsupportive surfaces during the acute phase does help. Regular short breaks to stand and move make more difference than trying to eliminate sitting entirely.
Is stretching helpful for this condition? Generally not in the early stages, and it can actively aggravate symptoms by compressing the tendon. This is one of the more counterintuitive aspects of managing this particular tendinopathy compared with others.
How long does it typically take to resolve? Proximal hamstring tendinopathy is often one of the slower tendinopathies to settle, commonly taking three to six months of consistent, correctly-staged loading, and sometimes longer in more established cases.
Can I still cycle or use a cross-trainer while recovering? Both can aggravate this condition because they combine hip flexion with sustained compression against the saddle or seat, so they're often reduced or modified early in rehabilitation, with a graded return once symptoms allow.
Will a scan help confirm the diagnosis? Usually not necessary. Ultrasound or MRI can be useful in longer-standing or unclear cases, or to rule out a partial tear, but the diagnosis is most often made confidently from the history and physical examination alone.
At BPR we'll pinpoint whether it's truly the tendon, rule out the back and nerve as contributing culprits, and design a staged loading plan that respects the tendon's particular sensitivity to compression. Book your assessment at bpr.rehab.
References
Goom, T.S.H., Malliaras, P., Reiman, M.P. and Purdam, C.R. (2016) 'Proximal hamstring tendinopathy: clinical aspects of assessment and management', Journal of Orthopaedic & Sports Physical Therapy, 46(6), pp. 483–493.
Cook, J.L. and Purdam, C.R. (2009) 'Is tendon pathology a continuum? A pathology model to explain the clinical presentation of load-induced tendinopathy', British Journal of Sports Medicine, 43(6), pp. 409–416.