Knee Arthritis Specialist in Northampton

Struggling with knee pain that won’t go away? You’re not alone, and you’ve come to the right place.

Persistent knee pain, stiffness or reduced mobility can make walking, exercising and everyday activities increasingly difficult. If your symptoms are not improving, an accurate diagnosis can help establish whether knee arthritis is responsible and which treatment options may be appropriate. Mr Pierre Nasr provides specialist assessment and treatment for knee arthritis and knee pain in Northampton and surrounding areas, offering both non-surgical treatments and knee replacement surgery when clinically appropriate.

Knee arthritis usually causes symptoms centred around the knee itself, including pain, stiffness, swelling and reduced movement. Some people can also experience referred discomfort into the thigh or shin, or develop pain elsewhere because their walking pattern has changed. However, persistent pain in the calf, ankle or throughout the whole leg should not automatically be attributed to knee arthritis. These symptoms can have several possible causes and may require a broader clinical assessment.

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Model of a human knee joint

Understanding Knee Arthritis

What Is Knee Arthritis?

Knee arthritis is the gradual breakdown of the cartilage lining inside the knee joint, the smooth, cushioning tissue that allows your bones to glide freely against one another. As cartilage wears away, bones begin to rub together, causing pain, stiffness, swelling, and a progressive loss of mobility.

It is one of the most common musculoskeletal conditions in the UK, particularly affecting adults over 50, though it can occur at any age following injury or in the context of certain medical conditions.

When Is It Time to Consider a Knee Replacement?

Knee replacement may be considered when significant knee pain, night pain and loss of function are substantially affecting everyday life and appropriate non-surgical treatments are no longer providing sufficient relief. The decision is based on your symptoms, examination and imaging rather than any single symptom. 

Resources:

What is Arthritis – Information Booklet

Arthritis | Causes, symptoms, treatment | Versus Arthritis

What is osteoarthitis?

Knee pain

How Is Knee Arthritis Diagnosed?

Mr Nasr takes a thorough, structured approach to diagnosis:

  • Clinical Assessment: A detailed discussion of your symptoms, their pattern, and their impact on your daily life
  • Physical Examination: Assessment of joint alignment, range of motion, tenderness, and gait
  • Weight-Bearing X-rays: The main imaging investigation used to assess joint-space narrowing, bone changes and the extent of arthritis 
  • MRI Scan (where clinically indicated): Used selectively when additional information about cartilage, menisci or other soft tissues is required, rather than routinely for established knee arthritis 
  • Blood Tests: To rule out or confirm inflammatory or rheumatoid arthritis when clinically suspected

Concerned about your symptoms?
Request a diagnostic consultation

Osteoarthritis vs. Rheumatoid Arthritis: What's the Difference?

There are two primary forms of knee arthritis, and understanding the distinction matters for your treatment:

    Osteoarthritis (OA)

    The most common type. Osteoarthritis is a degenerative joint condition affecting the cartilage, underlying bone and other structures within the knee. It may affect one knee more than the other and often develops gradually.

    Rheumatoid Arthritis (RA)

    An autoimmune condition in which the body’s immune system attacks the joint lining (synovium), causing inflammation, pain, and cartilage damage. RA often affects both knees symmetrically and is managed with specialist rheumatological input alongside orthopaedic care. 

Recognising the Symptoms: Early and Advanced Knee Arthritis

Early identification of knee arthritis allows for the widest range of treatment options and the best long-term outcomes. The following symptoms are associated with knee arthritis at varying stages:

* Pain extending well beyond the knee, particularly persistent calf, ankle or whole-leg pain, should not automatically be assumed to be caused by knee arthritis and may require assessment for other causes. 

    Early Knee Arthritis Symptoms

    Aching or stiffness inside the knee, especially in the morning or after sitting.

    A feeling of instability or the knee “giving way” on uneven ground.

    Mild swelling around the knee joint after use.

    Difficulty with specific activities like climbing stairs or walking.

    Tenderness along the inner or outer aspect of the knee.

    Advanced & Severe Arthritis Symptoms

    Persistent or night-time knee pain that may disrupt sleep.

    Significant limitation of everyday activities because of knee pain.

    Significant swelling and warmth in and around the joint.

    Reduced range of movement; difficulty fully straightening or bending the knee.

    Persistent discomfort that affects the entire leg.

Non-Surgical Treatment Options

For many patients, particularly those with early or moderate knee arthritis, non-surgical treatment can help reduce pain, improve function and potentially delay the need for surgery. 

Physiotherapy and Exercise Rehabilitation

Structured physiotherapy is one of the most evidence-based treatments for knee arthritis. A tailored exercise programme strengthens the muscles around the knee, particularly the quadriceps and hamstrings, helping to support the joint and improve mobility. 

Weight Management

Even a modest reduction in body weight can reduce the forces acting through the knee joint. Combined with physiotherapy, weight management can form an important part of non-surgical care. 

Knee Injection Treatments

When pain relief from exercise and lifestyle modification is insufficient, targeted injections may provide useful symptomatic relief for selected patients: 

Corticosteroid (Steroid) Injections

Anti-inflammatory medication is injected directly into the knee joint and can provide temporary pain relief for some patients, particularly during symptomatic flare-ups. The duration and degree of relief vary between individuals. 

Hyaluronic Acid (Viscosupplementation) Injections

Hyaluronic acid is a substance naturally present in joint fluid. Some patients obtain useful symptomatic relief following hyaluronic acid injections, although the response and duration of benefit vary between individuals. The treatment does not reverse the underlying arthritis and is considered selectively as part of an individual treatment plan. 

Explore our knee injection options 

Surgical Excellence: When Surgery Is the Right Answer

If your knee arthritis has progressed to the point where pain is constant, your quality of life is substantially affected, and conservative measures no longer provide adequate relief, surgery may be the most effective and lasting solution.

Partial Knee Replacement (Unicompartmental)

  • A smaller incision and operation compared to a total knee replacement
  • Faster recovery: many patients are mobilising within hours and return home the same day or within 24 hours
  • A more natural-feeling knee post-operatively
  • Preservation of the healthy parts of the joint for the future

Total Knee Replacement (Total Knee Arthroplasty)

  • Excellent long-term outcomes, implants routinely lasting 15–20 years or more
  • Substantial and durable pain relief of arthritis-related knee pain 
  • Improved mobility and ability to return to everyday activities and low-impact exercise 
  • Rapid recovery pathways: Mr Nasr’s patients benefit from enhanced recovery protocols designed to get them moving safely and confidently as quickly as possible.

Why Choose Us

At Northampton Hip and Knee Clinic, we pride ourselves on providing exceptional care for hip and knee conditions. Here are four reasons to choose us:

Experience

Mr. Pierre Nasr has extensive experience in hip and knee treatments, performing hundreds of procedures annually. His expertise ensures high-quality surgical outcomes.

Expertise

As a specialist in hip and knee surgeries, Mr. Nasr brings a depth of knowledge and skill to every case, offering advanced treatment options tailored to each patient.

Personalised Care

We tailor our approach to each patient's unique needs and circumstances, ensuring a treatment plan that best suits your condition and lifestyle.

Proven Outcomes

Our clinic consistently achieves excellent results, with high patient satisfaction rates reflecting our commitment to exceptional care and successful treatments.

Success stories for our patients

Our dedication to outstanding care is evident in the stories of our patients. Explore how our treatments have significantly improved lives, offering relief and restoring mobility for individuals just like you.

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Caroline SCATTERGOOD
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My experience has been PERFECT. Mr Pierre Nasr,explains every thing so clearly and with compassion. He has a way with him that makes you feel good and strong .! Really prompt attention from Sarah, not left worrying if you will here from her ..! Every one at 3 shires are exceptionally, kind and caring ... so well done .... and THANKYOU so much x If medals were awarded you would all get Gold medals for GREAT GREAT WORK. LOVE Caroline. 🏆💙.x
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Lorraine Stones
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I had a knee replacement surgery at Three Shires. The care I received was excellent, all the staff were friendly and made me feel at ease. The surgery went well , Mr Nasr and Mr Tanner were both welcoming and explained everything to me and made sure that I understood what was going to be done, even the after care was excellent. My time in Three Shires was very relaxing and the staff were there for you anytime night or day. I would highly recommend going there for your treatment.
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Linda Pike
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I had absolutely wonderful care at Three Shires hospital in Northampton and great recoveries from two total knee replacements carried out by Mr Pierre Nasr. Mr Howard Tanner followed up on my care after the operations and was extremely professional and personable. Many thanks to all.
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Geraldine Smith
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Had a TKR at Three Shires Hospital on 7/11/25. Right from the very begining I was told what would happen and how it would feel. I had a nerve block, and the lovely anesthetist said he would also give me sedation. I can remember going into the pre-op room, the next I remember was waking up in recovery. I can highly recommend this hospital, was really looked after. I went in as an NHS patient in a private hospital. Due to have the other knee done soon.Thank you.
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Michael H
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Went to see Pierre in 2018 for an Arthroscopy it’s my 5th and by far the most pain free of them all I was walking fine after 2/3 days and back to work after 7 Can’t thank Pierre enough & 16th December 2025 I’ve had a 1/2 knee replacement so far so good Thanks again Pierre I hope to play Tennis again & possibly ski again in the future
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David Medlicott
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Had appointment with Mr salha. A consultant at three shires hospital. when we arrived we found plenty of parking.well signed posted. And well-maintained. On entering the reception it was well light and very cleen. The receptionist was very polite and directed me to were i needed to be. The dowas on time.well managed And explain everything in detail that need to be done. Escorted me to the x-ray department. Then when x-ray was sent to his computer.he proceeded to point out the problem things and explain what the next step should be. Left there with a hand shake and a feeling of reassurance I would highly recommend this hospital
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Mike Fearey
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Everything was excellent. I can wholeheartedly recommend Pierre Nasr and the Three Shires Hospital.
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Vivienne and John Benjamin
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Very pleased with the care received from Mr Nasr. He is professional yet friendly and approachable. He explains things in an understandable way. Surgery went smoothly and successfully.
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Nicola Newman
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Mr Nasr is very personable, knowledgeable and skilled. He put me at my ease during the first consultation, before and after my hip revision surgery and at follow-up. He allows time for questions and answers thoroughly, with examples of scans / evidence. Highly recommended.
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Mark Cotton
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An extremely professional, expedient and flexible experience with a brilliant, pain free outcome. Cannot recommend highly enough

 

Ways to get in touch

Mr Pierre Nasr, MBBS BSc Dip IMC RCS (Ed) FRCS (Tr&Orth), is a Consultant Trauma and Orthopaedic Surgeon with extensive experience in hip and knee replacements and fracture management. His expertise ensures you receive the highest standard of care at Northampton Hip and Knee Clinic.

Remote Consultations for Hip and Knee Pain and Lower Limb Trauma

Experiencing hip or knee pain or a recent lower limb injury? You no longer need to wait for in-person appointments to receive expert advice and care. At Northampton Hip and Knee Clinic, we offer remote consultations that allow you to discuss your condition with our specialist team from the comfort of your own home.

For more information about fracture treatment or to schedule a consultation with Mr Nasr, please contact us:

    Circle Three Shires Hospital, The Avenue, Northampton NN1 5DR

    Knee Arthritis FAQs

    Can knee arthritis pain radiate down the leg?

    Yes. Knee arthritis can sometimes cause referred discomfort beyond the knee, particularly into the thigh or shin. Changes in the way you walk because of a painful or stiff knee can also contribute to discomfort elsewhere in the leg. However, persistent calf, ankle or whole-leg pain may have other causes, so specialist assessment can help identify the source.

    What are the early symptoms of knee arthritis?

    Early knee arthritis symptoms include morning stiffness that eases within 30 minutes of movement, aching during or after physical activity, mild swelling after use, and tenderness along the inner or outer aspect of the knee joint. Many patients also notice a creaking or grating sensation (crepitus) when bending or straightening the knee. Early diagnosis allows for the greatest range of treatment options.

    What is the difference between osteoarthritis and rheumatoid arthritis of the knee?

    Osteoarthritis is a degenerative joint condition affecting the cartilage and other structures within the knee. Rheumatoid arthritis is an autoimmune disease in which the immune system attacks the joint lining, causing inflammation and joint damage, often affecting both knees. Clinical examination, imaging and, where appropriate, blood tests can help distinguish between them.

    How do I know if I need a knee replacement?

    You may need to consider a knee replacement when knee arthritis pain is constant, including at rest and at night; significantly limits your daily activities; is no longer controlled by non-surgical treatments such as physiotherapy, weight management, or injections; and when imaging confirms advanced joint damage.

    Does your whole leg hurt when you need a knee replacement?

    Whole-leg pain is not a reliable indicator that you need a knee replacement. Persistent pain affecting the whole leg can have several possible causes and requires appropriate assessment. More relevant indicators for considering knee replacement include significant knee pain, night pain, substantial functional limitation and advanced arthritis that has not responded adequately to non-surgical treatment.

    Are there non-surgical treatments for severe knee arthritis?

    Yes, although the options become more limited as arthritis advances. Steroid injections can provide temporary symptomatic relief for some patients. Hyaluronic acid injections may also provide useful relief in selected patients, although response varies and they do not reverse the underlying arthritis. Pain medication, appropriate physiotherapy and walking aids may also help manage symptoms.

    Can bad knees cause leg pain beyond the knee itself?

    Yes, sometimes . When knee function is compromised, changes in walking and loading can place additional demands on surrounding muscles and joints. Knee arthritis can also be associated with referred discomfort, particularly into the thigh or shin. However, persistent calf, ankle or whole-leg pain should not automatically be attributed to the knee. Treating confirmed knee arthritis may improve symptoms that are genuinely related to it, but this depends on the underlying cause of the wider leg pain.

    Is a partial knee replacement better than a total knee replacement?

    Neither is universally better; the right choice depends entirely on which parts of your knee joint are affected by arthritis. If arthritis is confined to one compartment, a partial replacement is less invasive, faster to recover from, and often feels more natural. If multiple compartments are damaged, a total knee replacement is more appropriate and remains a highly effective, durable procedure.