Knee Pain: What Causes It and How Physiotherapy in Calgary Can Help (2026 Update)

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Most people use "knee pain" the way they use "headache" — as if it is one thing. It is not. The pain you feel going down stairs, the click that comes with squatting, the deep ache after a 10K run, and the sharp giving-way of a twisted knee are completely different problems with completely different treatments. Lumping them together is how patients end up doing the wrong exercises for the wrong condition for months.

The Six Most Common Knee Problems We See

1. Patellofemoral pain ("runner's knee")

Aching pain around or behind the kneecap, worse with stairs, squatting, sitting for long periods ("movie-goers sign"), and running — especially downhill. Affects roughly 1 in 4 active adults at some point. Patellofemoral pain is the most common cause of knee pain in young, active people, and it does not need an MRI to diagnose.

2. Knee osteoarthritis

Deep, aching pain that worsens with load, stiffness in the morning or after sitting, and sometimes a sense of "creaking." We have a dedicated arthritis post — the short version: exercise, weight management, and education are first-line regardless of imaging severity. Most patients can delay or avoid replacement with serious, supervised rehab.

3. Meniscus injuries

Two flavours: an acute traumatic tear from a twisting injury (usually in a younger, athletic knee) and a degenerative tear (usually in a middle-aged or older knee, often without a clear injury). They behave differently and are treated differently. The 2024 five-year FIDELITY placebo-surgery follow-up confirmed that arthroscopic partial meniscectomy for degenerative meniscus tears produces no meaningful benefit over sham surgery (Sillanpää et al., 2024). For acute tears in younger patients, surgical opinion may still be appropriate — but for most degenerative tears, the answer is rehab.

4. ACL injuries

A "pop" with rapid swelling, often a non-contact pivoting injury (skiing, soccer, basketball). Historically treated with prompt reconstruction surgery. The 2010 KANON trial randomized 121 young active adults with acute ACL ruptures to early reconstruction plus rehab, or rehab with the option of delayed reconstruction if needed. At 2 and 5 years, outcomes were similar between groups — and more than half of the "rehab-first" group never needed surgery (Frobell et al., 2010; Frobell et al., 2013). Reconstruction is still the right call for many patients, but it should not be automatic.

5. Patellar tendinopathy ("jumper's knee")

Pain at the lower pole of the kneecap, worse with jumping, deceleration, and heavy squats. Common in volleyball, basketball, and running. Like other tendinopathies in this series, it is a load-tolerance problem, not a structural disaster — and the most reliable treatment is progressive heavy loading, not rest.

6. Iliotibial band (ITB) syndrome

Sharp lateral knee pain that develops at a consistent point during a run, often improving with rest and returning at the same distance the next time. Worth flagging: stretching the ITB is not the answer (and may not even be mechanically possible). The current evidence points to glute strength, running form modification, and load management.

What the Evidence Actually Says

Patellofemoral pain: hips matter as much as quads

The 2019 JOSPT clinical practice guideline on patellofemoral pain ranks exercise therapy — particularly combined hip and knee strengthening — as the strongest evidence-based intervention (Willy et al., 2019). The 2018 international consensus statement from the Patellofemoral Pain Research Retreat reached the same conclusion: hip-focused work produces faster and larger pain reductions than knee-only programs (Collins et al., 2018). If your previous program was all leg extensions, that is why you did not get better.

ACL: not every torn ACL needs to be replaced

The KANON trial 5-year follow-up published in the BMJ remains one of the most important and underused pieces of orthopedic evidence in the last 15 years. Patients who started with rehab and proceeded to surgery only if needed had similar patient-reported outcomes, similar return-to-activity rates, and no increased risk of subsequent meniscus surgery or osteoarthritis compared to those who had early reconstruction (Frobell et al., 2013). The decision should be driven by your sport, your knee's stability under load, and your goals — not by a knee-jerk default to surgery.

Degenerative meniscus tears: rehab beats arthroscopy

The FIDELITY trial randomized 146 adults with degenerative meniscus tears to arthroscopic partial meniscectomy or sham surgery. At 5 years, there were no meaningful differences between groups in pain, function, or structural progression on MRI (Sillanpää et al., 2024). Most international guidelines now recommend against arthroscopy for degenerative knee disease except in select cases. If a degenerative tear is incidentally found on your MRI and the proposed plan is "let's clean it up," ask why.

What an Honest Treatment Plan Looks Like

1.     Diagnose, then treat. Patellofemoral pain, meniscus injury, OA, and tendinopathy all present at the knee but respond to different programs. A real clinical exam — not "looks like runner's knee" — sets up the rest.

2.     Strengthen the chain. Quadriceps, hip abductors, hip external rotators, and calves — almost every knee condition we see benefits from work above and below the joint, not just at the knee.

3.     Load it sensibly. For tendinopathies and OA, progressive heavy or moderate loading two to three times a week, scaled to where you are right now. The tendon and the joint adapt; they do not want to be left alone.

4.     Modify provocation early, return to load deliberately. Temporary reduction in the aggravating activity, while building capacity, then a planned return — not indefinite avoidance.

5.     Manual therapy as an adjunct. Useful to reduce sensitivity so loading can progress. Not the main course.

6.     Realistic timelines. Patellofemoral pain typically responds in 6–12 weeks. Tendinopathy is 3–6 months. OA is a long-term project measured in months and seasons. ACL rehab — surgical or non-surgical — is roughly 9–12 months back to high-level sport.

Home Strategies That Actually Help

•      Walk daily. Movement is medicine for joints and tendons. Most knees do better with more, gentler movement than with rest.

•      Train hips. Side-lying clamshells, single-leg bridges, banded lateral walks, and split squats two to three times a week.

•      Build leg strength. Goblet squats, step-ups, and Romanian deadlifts scaled to your starting point. Twice a week is enough.

•      Stop the "perfect form, painful exercise" loop. If a movement hurts more than 3–4/10 and pain lingers afterward, change something — load, range, or tempo.

•      Sleep enough and manage stress. Sleep restriction amplifies pain sensitivity in every musculoskeletal condition we have studied.

When Knee Pain Needs Urgent Attention

•      A "pop" with rapid swelling and a feeling of instability — possible ACL or major ligament injury.

•      Inability to bear weight, or a locked knee that will not fully straighten.

•      Severe pain with redness, warmth, and fever — possible joint infection.

•      Calf pain, swelling, or warmth after prolonged immobility — possible deep vein thrombosis.

•      Sudden, severe pain after a fall, especially in older adults — possible fracture.

How We Treat Knee Pain at Our Calgary Clinic

1.     Detailed assessment. Differentiating patellofemoral pain from meniscus, tendon, and joint problems through careful clinical exam — and screening for hip and lumbar contributors.

2.     Progressive loading programs. Built for adults with jobs, running goals, ski seasons, or grandchildren to chase. Not a sheet of bridges and clamshells.

3.     Manual therapy and movement re-education where indicated. Used to reduce sensitivity so loading can progress.

4.  Honest navigation of imaging and surgery. When an MRI or orthopedic consult is appropriate, we coordinate. When it is being offered as a shortcut for a condition the evidence says rehab can handle, we say so.

5.  Outcome tracking. Validated tools (KOOS, AKPS for patellofemoral pain, VISA-P for patellar tendons, single-leg hop tests) so progress is measured, not guessed.

Why Choose Our Clinic on MacLeod Trail?

We are at 8989 MacLeod Trail SW, serving Haysboro, Kingsland, Fairview, Acadia, and the surrounding South Calgary neighbourhoods. We see a lot of knees — runners on the Glenmore Reservoir, hockey and ringette players, Kananaskis hikers, and adults with hip-driven knee pain from sedentary work. As an FCAMPT-certified clinician, I bring advanced manual therapy and clinical-reasoning training to every assessment.

Book a Knee Pain Assessment

If your knee has been bothering you for more than a couple of weeks, is getting worse, or is starting to dictate what you do at work, in sport, or around the house, get it assessed before it becomes entrenched. Most patients see meaningful change inside the first three to four sessions when the plan is matched to the actual problem.

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This article is for general educational purposes only. It is not medical advice, does not replace individualized assessment by a qualified healthcare professional, and does not create a physiotherapist–patient relationship. Always consult a regulated healthcare provider before starting a new exercise program or making changes to your care.

Bibliography

Collins, N. J., Barton, C. J., van Middelkoop, M., Callaghan, M. J., Rathleff, M. S., Vicenzino, B. T., Davis, I. S., Powers, C. M., Macri, E. M., Hart, H. F., de Oliveira Silva, D., & Crossley, K. M. (2018). 2018 Consensus statement on exercise therapy and physical interventions (orthoses, taping and manual therapy) to treat patellofemoral pain: Recommendations from the 5th International Patellofemoral Pain Research Retreat, Gold Coast, Australia, 2017. British Journal of Sports Medicine, 52(18), 1170–1178. https://doi.org/10.1136/bjsports-2018-099397

Frobell, R. B., Roos, E. M., Roos, H. P., Ranstam, J., & Lohmander, L. S. (2010). A randomized trial of treatment for acute anterior cruciate ligament tears. New England Journal of Medicine, 363(4), 331–342. https://doi.org/10.1056/NEJMoa0907797

Frobell, R. B., Roos, H. P., Roos, E. M., Roemer, F. W., Ranstam, J., & Lohmander, L. S. (2013). Treatment for acute anterior cruciate ligament tear: Five year outcome of randomised trial. BMJ, 346, f232. https://doi.org/10.1136/bmj.f232

Sillanpää, N., Iivanainen, M., Turkiewicz, A., Sihvonen, R., Paavola, M., Taimela, S., Järvinen, T. L. N., & Englund, M. (2024). Effect of arthroscopic partial meniscectomy on structural degeneration of the knee — A 5-year MRI-based follow-up of the placebo-surgery controlled FIDELITY (Finnish Degenerative Meniscus Lesion Study) trial. Osteoarthritis and Cartilage, 32(12), 1607–1615. https://doi.org/10.1016/j.joca.2024.09.001

Willy, R. W., Hoglund, L. T., Barton, C. J., Bolgla, L. A., Scalzitti, D. A., Logerstedt, D. S., Lynch, A. D., Snyder-Mackler, L., & McDonough, C. M. (2019). Patellofemoral pain: Clinical practice guidelines linked to the International Classification of Functioning, Disability and Health from the Academy of Orthopaedic Physical Therapy of the American Physical Therapy Association. Journal of Orthopaedic & Sports Physical Therapy, 49(9), CPG1–CPG95. https://doi.org/10.2519/jospt.2019.0302