Sacroiliitis:

October 13, 2025

Causes, Symptoms, and Expert Physiotherapy Treatment in Northwich, Cheshire

Living with persistent lower back, hip, or buttock pain can be frustrating — especially when the discomfort seems to flare up after standing, climbing stairs, or sitting for long periods. One often-overlooked cause of such pain is sacroiliitis — inflammation of the sacroiliac (SI) joints that connect your spine to your pelvis.


At Weaver Physiotherapy & Sports Injury Clinic in Northwich, Cheshire, our experienced Chartered Physiotherapists diagnose and treat sacroiliitis using evidence-based methods that target the root cause, not just the symptoms. Whether your pain is mild or debilitating, early physiotherapy intervention can make a huge difference in your recovery, mobility, and long-term comfort.


What Is Sacroiliitis?


Sacroiliitis refers to inflammation or irritation of one or both sacroiliac joints, which are located at the base of your spine — where the sacrum (the triangular bone at the bottom of your spine) meets the iliac bones of your pelvis. These joints act as shock absorbers, transferring weight and forces between the upper body and legs.


When inflamed, the SI joints can cause sharp, aching, or radiating pain in the lower back, hips, buttocks, and sometimes down the legs. Sacroiliitis can be either acute (short-term) or chronic (long-lasting), and it’s often mistaken for other conditions such as sciatica, lumbar disc injury, or hip arthritis.


Understanding the Role of the Sacroiliac Joints


Although small in movement, the sacroiliac joints play a major role in stabilising your body during walking, running, and lifting. They’re supported by strong ligaments and muscles that provide both stability and slight flexibility.


When these joints become irritated, overloaded, or restricted, the result can be pain, stiffness, and postural imbalance — affecting everything from walking patterns to sleep quality.


Common Causes of Sacroiliitis


There are several reasons why the sacroiliac joints become inflamed or painful. Some of the most common causes include:


1. Trauma or Injury


A sudden impact — such as a fall onto the buttocks, car accident, or sporting collision — can damage the SI joints or supporting ligaments, leading to inflammation and pain.


2. Repetitive Stress


Repetitive loading through the pelvis, such as running on uneven surfaces, lifting heavy weights, or standing for prolonged periods, can place excessive stress on the joints.


3. Leg Length Discrepancy or Poor Biomechanics


Even a small difference in leg length, pelvic tilt, or abnormal gait can cause asymmetrical stress across the SI joints, leading to irritation over time.


4. Pregnancy and Postpartum Changes


During pregnancy, hormonal changes cause the ligaments around the pelvis to relax to prepare for childbirth. This can make the SI joints more mobile and prone to inflammation — a condition often called postpartum pelvic girdle pain.


5. Inflammatory Conditions


Autoimmune or inflammatory diseases such as ankylosing spondylitis, psoriatic arthritis, or Crohn’s disease can cause chronic inflammation of the sacroiliac joints.


6. Degenerative Changes


As we age, wear and tear of the SI joints can lead to osteoarthritis, contributing to stiffness and pain in the lower back and hips.


Symptoms of Sacroiliitis


Sacroiliitis can cause a variety of symptoms that often mimic other lower back or hip problems. Common signs include:

    •    Dull, aching, or sharp pain in the lower back, buttocks, hips, or thighs

    •    Pain that worsens with prolonged standing, climbing stairs, or running

    •    Stiffness and reduced mobility in the lower back or pelvis

    •    Pain when rolling over in bed or getting up from a seated position

    •    Radiating pain that may mimic sciatica

    •    Discomfort when weight-bearing on one leg

    •    In severe or chronic cases, inflammation may cause night pain or fatigue


If these symptoms sound familiar, it’s important to seek professional assessment rather than self-diagnosing. Conditions like disc herniation, piriformis syndrome, or hip arthritis can present similarly, but require different treatments.


How Sacroiliitis Is Diagnosed


At Weaver Physiotherapy & Sports Injury Clinic in Northwich, diagnosis begins with a comprehensive assessment by one of our Chartered Physiotherapists.


This includes:

    1.    Detailed history-taking – understanding how and when your pain started, any aggravating factors, injuries, or medical history.

    2.    Postural and gait analysis – to detect pelvic misalignment or leg length discrepancies.

    3.    Palpation and movement testing – gentle pressure and movement tests to identify SI joint tenderness and asymmetry.

    4.    Functional testing – assessing movement patterns like sitting, bending, and walking to see how your body compensates.

    5.    Special tests – such as the FABER test (Flexion, Abduction, External Rotation) and sacral thrust test to confirm SI joint involvement.


In chronic or complex cases, your physiotherapist may recommend imaging such as X-rays, MRI, or CT scans to rule out other causes like arthritis or disc injury.


How Physiotherapy Can Help Sacroiliitis


Physiotherapy is one of the most effective, non-invasive treatments for sacroiliitis. At Weaver Physio, our goal is to:


✅ Reduce pain and inflammation

✅ Restore normal movement and alignment

✅ Improve core and pelvic stability

✅ Prevent recurrence through education and exercise


Let’s look at how we achieve this step-by-step.


1. Pain Relief and Inflammation Reduction


In the early stages, the focus is on reducing inflammation and relieving pain. This may include:

    •    Manual therapy – gentle mobilisations of the sacroiliac joint to restore alignment and movement.

    •    Soft tissue release – targeting tight muscles such as the glutes, piriformis, and lower back.

    •    Acupuncture or dry needling – to release muscle tension and promote blood flow.

    •    Shockwave therapy – for chronic or stubborn sacroiliac pain, to stimulate healing and reduce sensitivity.

    •    Heat or ice therapy – depending on whether inflammation or stiffness is dominant.


2. Correcting Alignment and Mobility


If pelvic or spinal alignment issues are contributing to your sacroiliitis, your physiotherapist may use:

    •    Joint mobilisation to restore normal SI joint movement

    •    Muscle energy techniques (METs) to correct pelvic asymmetry

    •    Postural re-education to improve sitting and standing alignment

    •    Stretching programmes for tight hip flexors, hamstrings, and gluteal muscles


This phase is crucial for restoring normal biomechanics and preventing recurring irritation.


3. Strengthening and Stability Work


Long-term relief from sacroiliitis depends on building core and pelvic stability. Your physiotherapist will design a personalised exercise programme including:

    •    Core strengthening – targeting deep abdominal and back stabilisers

    •    Glute activation – to support hip and pelvic alignment

    •    Pelvic floor engagement – especially important for postpartum clients

    •    Functional stability training – such as single-leg balance and controlled movement drills


At Weaver Physio, we often incorporate these exercises into tailored rehabilitation programmes that evolve as your strength improves.


4. Education and Lifestyle Advice


Understanding what triggers your pain is vital. We’ll guide you on:

    •    Correct sitting, lifting, and sleeping postures

    •    Safe return to sport or gym training

    •    Footwear and orthotic advice (if poor biomechanics contribute)

    •    Load management – how to pace daily activities to avoid flare-ups

    •    Strategies for stress reduction and relaxation, as tension can worsen pain


5. Return to Normal Activity


Once pain is under control and movement is restored, we’ll help you return to your normal lifestyle safely — whether that’s running, playing sport, or working pain-free.


For runners and athletes, we also offer Video Gait Analysis and Runner’s MOT assessments to ensure your biomechanics are balanced and injury-resistant.


Other Treatments That May Support Recovery


In some cases, sacroiliitis may benefit from additional interventions alongside physiotherapy:

    •    Shockwave Therapy – highly effective for chronic inflammation and tendon involvement around the SI joint.

    •    Sports or Deep Tissue Massage – to relieve muscle tension and improve circulation.

    •    Acupuncture – to reduce pain and stimulate natural healing.

    •    Rehabilitation classes – to maintain flexibility and strength long-term.


At Weaver Physiotherapy & Sports Injury Clinic, we tailor each treatment plan to your specific needs — ensuring a truly personalised recovery journey.


How Long Does Recovery Take?


Recovery from sacroiliitis depends on several factors — the severity of inflammation, duration of symptoms, and underlying cause.

    •    Mild cases: 2–6 weeks with consistent physiotherapy and home exercises.

    •    Moderate to chronic cases: 8–12 weeks or more, particularly if posture or biomechanical issues are contributing.

    •    Inflammatory or arthritic conditions: require ongoing management and exercise to maintain comfort and function.


The good news is that most people experience significant improvement with the right combination of hands-on treatment, strengthening, and lifestyle modifications.


Can Sacroiliitis Be Prevented?


While not all cases can be avoided, you can greatly reduce your risk by:

    •    Maintaining strong core and gluteal muscles

    •    Practising good posture and lifting technique

    •    Avoiding prolonged sitting or standing

    •    Keeping hip and lower back mobility through regular stretching

    •    Ensuring proper footwear and gait alignment

    •    Managing body weight and stress levels


Preventive physiotherapy sessions, such as a postural assessment or Runner’s MOT, can detect and correct issues before they lead to SI joint irritation.


When to See a Physiotherapist


If your back or hip pain:

    •    Persists for more than a few weeks

    •    Worsens when standing or climbing stairs

    •    Radiates into the buttock or thigh

    •    Affects sleep or daily movement


…it’s time to seek help. Early physiotherapy treatment can prevent chronic pain and long-term dysfunction.


Why Choose Weaver Physiotherapy & Sports Injury Clinic, Northwich


At Weaver Physio, we’re passionate about helping people across Northwich, Knutsford, Winsford, Middlewich, Tarporley, and Frodsham move better, feel stronger, and live pain-free.


Here’s why patients trust us for sacroiliitis treatment:

    •    Over 70 years of combined clinical experience in physiotherapy and rehabilitation

    •    Chartered Physiotherapists & Sports Injury Specialists registered with the HCPC and CSP

    •    Advanced treatments including Shockwave Therapy, Acupuncture, Sports Massage, and Video Gait Analysis

    •    Tailored treatment plans designed around your goals and lifestyle

    •    Free onsite parking and flexible appointments

    •    Trusted by local GPs, consultants, and athletes across Cheshire


Our mission is simple — to help you recover faster, move better, and return to doing what you love, without pain or restriction.


Book Your Sacroiliitis Assessment Today


If you’re struggling with sacroiliac joint pain, don’t wait for it to get worse. The sooner you get assessed, the faster your recovery can begin.


📞 Call Weaver Physiotherapy & Sports Injury Clinic today on 01606 227484

🌐 Visit https://www.weaverphysio.com

📍 Serving Northwich, Knutsford, Winsford, Middlewich, Tarporley & surrounding Cheshire areas


Let our expert physiotherapists help you find the root cause of your pain, guide you through a personalised recovery plan, and get you back to a pain-free, active lifestyle.


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Have you ever been told that your running style is “wrong” and immediately wondered whether you need to change it? Advice online can make normal differences in movement look like faults. While certain running habits may be worth exploring—particularly when pain keeps returning—there is no single perfect stride, cadence or foot strike for every runner. At Weaver Physiotherapy & Sports Injury Clinic, we take an individual approach to running technique. Your training history, symptoms, strength, mobility, goals and the way you respond to load all matter. For runners in Northwich, Middlewich, Winsford, Knutsford, Sandbach, Frodsham and Tarporley, our Runner’s MOT and running gait analysis⁠ provides clear, personalised feedback rather than generic rules. What are common running form mistakes? A “running form mistake” is often better described as a movement habit to investigate. A pattern may look unusual without being harmful, and a video alone cannot confirm that it is the cause of pain. Common concerns include: Overstriding – the foot appearing to land well ahead of the body. Upper-body tension – raised shoulders, clenched hands, a tight jaw or stiff arm swing. Forcing foot strike – deliberately trying to run on the forefoot or heel when it feels awkward. Slumped posture – losing trunk control as fatigue develops. Abrupt changes in technique – trying to alter cadence, posture and foot strike at the same time. These patterns can change with pace, hills, footwear, fatigue, confidence and training load. Research has found limited evidence that individual biomechanics alone predict running injury, which is why form should be considered alongside the wider picture rather than treated as a diagnosis. Is there one correct way to run? No. Effective running does not look identical from person to person. Your anatomy, strength, experience, speed, terrain and fatigue level all influence your stride. A single photograph or short clip captures only one moment. It cannot explain how you feel during a run, what your training has involved that week, or whether a movement pattern is actually contributing to symptoms. If you are comfortable, progressing well and free from persistent pain, you may not need to change your technique simply because it differs from someone else’s. The aim is not to chase a “perfect” running style. It is to understand your own movement and make sensible adjustments only when they are relevant to your goals or symptoms. How to assess your running form safely Start with one question. Perhaps your foot feels as though it reaches too far forwards, your shoulders tighten on longer runs, or you notice discomfort appearing as you fatigue. During an easy run at your usual pace, consider: Does your breathing feel relaxed? Are your shoulders, hands and jaw unnecessarily tense? Does your stride feel comfortable and natural? Does your movement alter later in the run? Is there recurring pain during, after or the following day? If you use video, record a brief clip from a safe, consistent position beside the route or on a treadmill. Never hold or watch a phone while running. Footage can be useful for observation, but it should prompt questions—not provide a self-diagnosis. How to change running technique without overdoing it Avoid making dramatic changes based on a social-media tip or a one-size-fits-all rule. A sudden change in cadence, posture or foot strike may feel unnatural and can make it difficult to work out what is helping. Instead: Choose one area to explore. Use one simple cue during an easy run. Keep the adjustment gentle and brief. Notice how it feels during the run and over the next 24–48 hours. Do not introduce several technique changes at once. For example, if you feel tense through the upper body, a helpful cue may be “soft shoulders and easy arms” rather than forcing a rigid posture. If you are concerned about stride length, focus on a light, comfortable rhythm rather than trying to land in a prescribed position. Training progression matters too. Increasing distance, pace, hills and frequency too quickly can overload tissues, regardless of how your running looks. NHS advice recommends building running gradually and listening to pain rather than pushing through it. Read the NHS guide to common running injuries ⁠. When should you seek individual running advice? Consider a running assessment if pain: Keeps returning or becomes more severe Changes the way you run Persists after reducing or adapting training Is associated with swelling, weakness, limping or a loss of confidence Leaves you unsure which changes, if any, are appropriate Sudden severe pain, inability to bear weight, major swelling, numbness, deformity or a suspected serious injury should be assessed urgently. NHS guidance on sprains and strains explains when to seek urgent help. What can running gait analysis help with? A running gait analysis does not promise to predict injury or reveal one universal correction. It can, however, provide a clearer view of movement patterns in the context of your symptoms, training and goals. At Weaver Physio, our Runner’s MOT (/runners-mot)⁠ combines slow-motion video gait analysis with strength, mobility and movement assessment. We look at factors such as: Running rhythm and lower-limb control Trunk, hip, knee and foot movement Strength, balance and mobility Previous injuries and current symptoms Training volume, recovery and running goals Your findings are then used to create practical, personalised recommendations. This may include a gradual gait cue, running-specific strength work, mobility exercises, load-management advice or a structured return-to-running plan. Our Chartered Physiotherapists and Sports Rehabilitators bring more than 70 years of combined clinical experience to help runners move with greater understanding and confidence. Build a stronger, more confident running stride Running form is not a test you have to pass. A movement pattern may be worth exploring, but it does not automatically mean that something is wrong. Pay attention to comfort, recurring symptoms and changes that develop with fatigue. Make adjustments gradually, progress training sensibly and seek individual support if pain continues. For runners across Northwich and Cheshire, Weaver Physio’s running gait analysis service (/runners-mot)⁠ offers professional, tailored guidance to help you run stronger and with more confidence. Frequently Asked Questions Is there one correct running form for everyone? No. There is no single ideal foot strike, cadence or posture that applies to every runner. 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Common symptoms include: Pain or stiffness at the back of the heel, especially first thing in the morning Discomfort when walking uphill, climbing stairs or rising onto tiptoes Pain during or after running, football, tennis, gym training or long walks Thickening or tenderness in the tendon Symptoms that improve as you warm up, then return later At Weaver Physio, we assess whether your symptoms are likely to be related to mid-portion or insertional Achilles tendinopathy, and screen for other possible causes of heel and calf pain. If there is concern about a rupture, significant tear or another condition requiring medical investigation, we will advise on the appropriate next step. What Is Shockwave Therapy? Extracorporeal Shockwave Therapy—often shortened to ESWT or radial shockwave therapy—uses controlled acoustic pressure waves delivered through a handheld applicator. It is not an electric shock and does not involve injections or surgery. 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We look beyond the painful spot to understand the full picture, including: Your symptom history and training or activity levels Previous injuries and treatment Calf strength, ankle mobility and balance Achilles tendon tenderness and loading tolerance Footwear, running surface and recent changes in training volume Hip, knee and foot control where relevant This allows us to confirm whether shockwave therapy is an appropriate option and develop a recovery plan tailored to you. Weaver Physio’s team also provides specialist physiotherapy and sports injury rehabilitation ⁠, so your treatment can be integrated with hands-on care, exercise rehabilitation and return-to-sport planning where needed. What Does a Typical Course Involve? A course of shockwave therapy commonly involves three to five sessions, often spaced about one week apart. The exact number and timing will depend on your presentation, response to treatment and rehabilitation goals. Each appointment is combined with guidance on tendon loading. This may include: Isometric calf exercises for pain management Progressive heel raises and heavy slow resistance work Soleus and gastrocnemius strengthening Balance, control and single-leg stability work A gradual return to running, hills, speed work or plyometric exercise Rather than avoiding all activity, we help you find an appropriate level of movement that keeps the tendon challenged without repeatedly exceeding its current capacity. Is Shockwave Therapy Right for You? Shockwave therapy may be suitable if you have persistent Achilles symptoms that have not settled with sensible activity modification and a targeted rehabilitation programme. It is particularly relevant for people who want a non-invasive option before considering more invasive interventions. However, it is not suitable for everyone. Your physiotherapist will discuss relevant precautions and assess factors such as pregnancy, blood-clotting issues, certain medications, recent steroid injection near the treatment area, suspected rupture or other medical considerations. It is also important to seek urgent medical advice if you experience a sudden pop in the back of the ankle, immediate weakness when pushing off, marked bruising or an inability to rise onto your toes. These can be warning signs of an Achilles rupture. Why Choose Weaver Physio? Weaver Physiotherapy & Sports Injury Clinic combines clinical assessment with a practical understanding of sport, training and everyday activity. We are based in Northwich and regularly support patients travelling from Knutsford, Alderley Edge, Holmes Chapel, Middlewich and across Cheshire. Our approach is built around three principles: Accurate assessment We identify the likely driver of your Achilles pain rather than treating every heel problem the same way. Evidence-informed rehabilitation Shockwave therapy is used as one part of a clear, progressive plan designed to restore strength and confidence. A return to the life you enjoy Whether your goal is pain-free dog walks, a hiking holiday, club running or competitive sport, your programme is shaped around it. Book an Achilles Tendon Assessment Persistent Achilles pain does not have to dictate how active you can be. If you are looking for shockwave therapy for Achilles tendinitis in Knutsford, Weaver Physio can help you understand your options and build a tailored recovery plan. Contact Weaver Physiotherapy & Sports Injury Clinic to arrange an assessment: Book or contact Weaver Physio 01606 227 484 07795 908 027 110 Middlewich Road, Northwich, CW9 7DP Frequently Asked Questions Is shockwave therapy painful? Most people describe shockwave therapy as uncomfortable rather than painful. The feeling is similar to firm tapping against the skin, and the intensity can be adjusted throughout treatment. Mild soreness, redness or tenderness can occur afterwards and usually settles within a few days. How many sessions will I need? Many patients have a course of three to five sessions, usually one week apart. Your clinician will recommend an appropriate plan based on your symptoms, tendon presentation and response to treatment. Can I exercise after shockwave therapy? Light daily activity is usually encouraged, but your clinician may advise avoiding high-impact exercise—such as running, jumping or hard hill work—for a short period after treatment. You will be given clear guidance on what to continue, reduce and progress. Will shockwave therapy cure my Achilles pain? No treatment can guarantee a cure. Shockwave therapy may help reduce pain and support recovery in suitable cases, but lasting improvement usually depends on combining treatment with a progressive loading programme, sensible activity management and a gradual return to sport.
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