# Straight answers about knee soreness and the next step *Knee Questions Answered | Knee Pain Treatment Scottsdale* > Knee pain treatment Scottsdale answers about scans, swelling, common causes, surgery, urgent signs, cost and local care. Can a short answer tell you exactly what is wrong? It can't, but it can point toward a sensible next step. These notes can help you ask clearer questions. A severe or sudden change needs prompt care. ## Sources 1. A systematic search of population studies found the proportion of people with knee pain who have radiographic osteoarthritis ranges from 15% to 76%, and the proportion of people with radiographic knee OA who have pain ranges from 15% to 81%. The authors conclude that knee x-ray results 'should not be used in isolation when assessing individual patients with knee pain'. Bedson J, Croft PR. — [The discordance between clinical and radiographic knee osteoarthritis: a systematic search and summary of the literature.](https://pubmed.ncbi.nlm.nih.gov/18764949/). *BMC Musculoskeletal Disorders*, 2008. DOI: 10.1186/1471-2474-9-116. 2. A prospective longitudinal study of 64 patients with acute medial meniscus posterior root tear managed non-operatively found 76.6% continued non-operative care and only 23.4% converted to surgery (median 6 months). Pain fell from 7.6 to 1.3 on an 11-point scale within 6 months and stayed there — even though structural degeneration on MRI progressed. Symptoms and structure moved in opposite directions. Knee Surgery, Sports Traumatology, Arthroscopy authors — [Clinical improvement despite structural degeneration after nonoperative treatment of medial meniscus posterior root tear: A prospective longitudinal study.](https://pubmed.ncbi.nlm.nih.gov/42573108/). *Knee Surgery, Sports Traumatology, Arthroscopy*, 2026. DOI: 10.1002/ksa.70570. 3. The 2019 ACR/Arthritis Foundation guideline makes STRONG recommendations for exercise, weight loss in people with overweight or obesity, self-efficacy and self-management programs, tai chi, cane use, tibiofemoral bracing, topical NSAIDs, oral NSAIDs and intra-articular glucocorticoid injections in knee OA; radiofrequency ablation for knee OA is only a conditional recommendation. Kolasinski SL, et al. — [2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee.](https://pubmed.ncbi.nlm.nih.gov/31908163/). *Arthritis & Rheumatology*, 2020. DOI: 10.1002/art.41142. 4. In a 2-year, double-blind RCT of 140 patients with symptomatic knee OA and ultrasound synovitis, intra-articular triamcinolone 40 mg every 12 weeks caused significantly GREATER cartilage volume loss than saline (index-compartment cartilage thickness change -0.21 mm vs -0.10 mm; between-group difference -0.11 mm, 95% CI -0.20 to -0.03) with NO significant difference in pain (-1.2 vs -1.9 on the WOMAC Likert pain subscale). McAlindon TE, LaValley MP, Harvey WF, et al. — [Effect of Intra-articular Triamcinolone vs Saline on Knee Cartilage Volume and Pain in Patients With Knee Osteoarthritis: A Randomized Clinical Trial.](https://pubmed.ncbi.nlm.nih.gov/28510679/). *JAMA*, 2017. DOI: 10.1001/jama.2017.5283. 5. FDA states verbatim: 'None of these products have been approved for the treatment of any orthopedic condition, such as osteoarthritis, tendonitis, disc disease, tennis elbow, back pain, hip pain, knee pain, neck pain, or shoulder pain.' The only FDA-approved stem cell products in the United States are blood-forming (hematopoietic progenitor) cells derived from umbilical cord blood, approved only for disorders of blood production. There are currently NO FDA-approved exosome products. U.S. Food and Drug Administration — [Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes](https://www.fda.gov/vaccines-blood-biologics/consumers-biologics/consumer-alert-regenerative-medicine-products-including-stem-cells-and-exosomes). *FDA (Center for Biologics Evaluation and Research)*, 2020. ## Do I need an MRI for knee pain? Often, you don't. A slow ache can usually be assessed from your history, an exam and sometimes an x-ray. An MRI may help after a major injury, when the knee locks or when its answer would change care. Ask what the picture needs to settle. ## What does an x-ray show for knee arthritis? It shows bone, alignment, bone spurs and the space inside the joint. Cartilage doesn't appear directly, though a smaller space can suggest that it has worn down. The image can't measure soreness, so the doctor also needs to hear how your knee feels. ## What are the symptoms of arthritis in the knee? Common signs include aching with walking, stiffness after rest, swelling and less motion. Stairs or standing from a chair may become harder. These signs can have other causes. Your doctor uses the pattern, the exam and sometimes a picture to sort them out. ## Does arthritis in the knee cause swelling? It can. The lining inside the joint may become irritated and make extra fluid. Slow swelling after activity differs from fast swelling after an injury. A very hot, red knee with fever needs same-day care because infection is possible. ## What is causing my knee pain? Arthritis, a sore tendon, kneecap strain and meniscus trouble are common causes. The hip or back can also send pain toward the knee. The sore spot and the movement that starts the ache help narrow the cause. An exam is often needed. ## Do I need surgery for a meniscus tear? Not always. A meniscus is the firm pad between the knee bones. Tears caused by wear may improve with exercise and time. A locked knee or a major new injury is different. Your symptoms, strength and exam guide the choice. ## When is knee pain an emergency? Get prompt help when you can't stand after an injury or the knee looks bent. Fast swelling, locking, new numbness or a cold foot also matter. A red, hot joint with fever may be infected. Those signs call for care sooner than a routine appointment. ## Who treats knee arthritis in Scottsdale? A primary-care doctor can start the exam for a gradual ache. A doctor who handles joint problems can assess lasting limits. A surgeon may help when function is poor and surgery is being considered. Choose someone who connects your symptoms to the knee picture. ## Does the Arizona heat make knee arthritis worse? Heat isn't known to damage an arthritic knee. Weather can still change how much you walk and how your body handles activity. Track movement, swelling and next-day soreness. That record is more useful than blaming the temperature alone. ## Bring your knee picture and the story behind the ache If the soreness hasn't eased, describe where it starts and which tasks are harder. Bring old reports and your medicine list. Ask what the exam suggests, whether another picture would help and how you will judge progress. The Scottsdale office is in the Mountain View Road medical corridor east of Loop 101. Call the Phoenix-area clinic team at (602) 837-PAIN. Book a free consultation: --- Your symptoms and your knee picture answer different questions. Knee pain treatment Scottsdale guidance for an aching joint, from relief at home to signs that need an exam. Plain Scottsdale guidance for understanding a sore knee, choosing a next step and knowing when to seek care. This site is operated by the owners of the QC Kinetix Phoenix-area clinics, and it openly recommends their Scottsdale location as a first-party business that benefits when readers book. © 2026 Scottsdale Knee Field Notes. General education, not medical advice for an individual knee; seek qualified in-person care for diagnosis and urgent symptoms.