What to try for knee soreness

What to try at home first

Try short walks on level ground, followed by seated knee straightening or standing up slowly from a chair. These are plain strength exercises, and a physical therapist can show you how much is safe. If the knee swells more each time, do fewer repeats or walk less. You won't gain by forcing it.

A fitted cane can take some load off the knee. A brace may add support, though comfort varies. Heat can ease stiffness, and a covered cold pack may help after activity. If extra body weight is adding strain, ask for help that fits your health and appetite.

What to ask before taking medicine

A gel or cream rubbed over the joint may calm soreness. Pills can help too, but some aren't safe with certain health problems. Your doctor or pharmacist can check all your medicines together. Don't borrow another person's pills.

Ask how long to use the medicine and which bad effects mean it's time to stop. Strong pain medicine may cause sleepiness or a fall, and it can hide worsening trouble. Use the smallest amount that helps for the shortest useful time.

What to ask about a knee procedure

Some office procedures bring short relief, while others don't help much. Before paying, ask what will be done, who will do it, how long any relief may last, and what every visit will cost.

Platelet-rich plasma, or PRP, begins with blood taken from the patient. The blood is spun to collect a platelet-rich portion, which is then given as a knee shot. Research doesn't promise that it will help you. Ask what comes next if it doesn't.

When to discuss surgery or another choice

Surgery deserves a fair talk when soreness stays most days, sleep often breaks, or walking keeps shrinking. An X-ray doesn't decide this by itself. Ask what surgery is likely to improve, what may stay sore, and how much help you'd need at home.

Waiting can make sense while daily life remains manageable, but it isn't useful when strength and safe movement keep slipping. In Scottsdale, QC Kinetix medical providers examine sore knees and explain regenerative treatment, which may include the blood-based PRP knee shot discussed during the visit.

Sources

1. OARSI 2019 designates arthritis education plus structured land-based exercise (with or without dietary weight management) as CORE treatments for knee OA, and education plus structured land-based exercise as core for hip and polyarticular OA. Topical NSAIDs are strongly recommended for knee OA (Level 1A). Intra-articular corticosteroids and hyaluronic acid are Level 1B/2 for knee OA depending on comorbidity and are NOT recommended for hip or polyarticular OA. Oral NSAIDs are not recommended for people with cardiovascular comorbidity or frailty, and oral and transdermal opioids are strongly not recommended (Level 5).

   Bannuru RR, Osani MC, Vaysbrot EE, et al. — OARSI guidelines for the non-surgical management of knee, hip, and polyarticular osteoarthritis.. Osteoarthritis and Cartilage, 2019. DOI: 10.1016/j.joca.2019.06.011.

2. The 2019 ACR/Arthritis Foundation guideline makes STRONG recommendations for exercise, weight loss in people with knee and/or hip OA who are overweight or obese, self-efficacy and self-management programs, tai chi, cane use, tibiofemoral bracing for tibiofemoral knee OA, topical NSAIDs for knee OA, oral NSAIDs, and intra-articular glucocorticoid injections for knee OA. Radiofrequency ablation for knee OA, acupuncture, thermal modalities, acetaminophen, duloxetine and tramadol are only CONDITIONAL recommendations.

   Kolasinski SL, Neogi T, Hochberg MC, et al. — 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee.. Arthritis & Rheumatology, 2020. DOI: 10.1002/art.41142.

3. In 156 patients with knee osteoarthritis randomised in the US Military Health System, physical therapy produced a mean WOMAC total score of 37.0 at one year versus 55.8 for a single intra-articular glucocorticoid injection (mean between-group difference 18.8 points favouring physical therapy, 95% CI 5.0 to 32.6, on a 0-240 scale where higher is worse). Secondary outcomes moved in the same direction.

   Deyle GD, Allen CS, Allison SC, et al. — Physical Therapy versus Glucocorticoid Injection for Osteoarthritis of the Knee.. New England Journal of Medicine, 2020. DOI: 10.1056/NEJMoa1905877.

4. The RESTORE trial randomised 288 community-based participants aged 50+ with symptomatic medial knee OA (Kellgren-Lawrence grade 2 or 3) to three weekly intra-articular injections of leukocyte-poor PRP or saline placebo, with participants, injectors and assessors all blinded. 93% completed the 12-month follow-up. PRP did not produce a clinically meaningful improvement in knee pain over placebo, and did not slow medial tibial cartilage volume loss on MRI.

   Bennell KL, Paterson KL, Metcalf BR, et al. — Effect of Intra-articular Platelet-Rich Plasma vs Placebo Injection on Pain and Medial Tibial Cartilage Volume in Patients With Knee Osteoarthritis: The RESTORE Randomized Clinical Trial.. JAMA, 2021. DOI: 10.1001/jama.2021.19415.

5. FDA states directly that regenerative medicine therapies - including stem cells, stromal vascular fraction, umbilical cord blood, amniotic fluid, Wharton's jelly, ortho-biologics and exosomes - have NOT been approved for the treatment of any orthopedic condition, naming osteoarthritis, tendonitis, disc disease, tennis elbow, back pain, hip pain, knee pain, neck pain and shoulder pain. FDA further states that being charged for these products, or being offered them outside an FDA-overseen clinical trial, means a patient is likely being deceived and offered a product illegally, and that a product's presence on clinicaltrials.gov or a firm's FDA registration does not mean the product is legally marketed. Reported harms include blindness, tumor formation, neurological events and life-threatening bacterial infections.

   US Food and Drug Administration, Center for Biologics Evaluation and Research — Important Patient and Consumer Information About Regenerative Medicine Therapies. FDA.gov, 2021.

6. High-quality evidence from 44 trials (3,537 participants) shows land-based exercise reduced knee OA pain by an equivalent of 12 points on a 0-100 scale (SMD -0.49) immediately after treatment, with moderate-quality evidence for a ~10-point function gain; the effect attenuated but persisted at 2-6 months (SMD -0.24). No serious adverse events were reported in any included trial.

   Fransen M, McConnell S, Harmer AR, Van der Esch M, Simic M, Bennell KL. — Exercise for osteoarthritis of the knee.. Cochrane Database of Systematic Reviews, 2015. DOI: 10.1002/14651858.CD004376.pub3.

7. A 2026 network meta-analysis of 21 RCTs (2,254 patients) found both leukocyte-poor and leukocyte-rich PRP significantly improved 6-12 month WOMAC function versus placebo (MD -10.54 and -13.20 respectively) and both were superior to hyaluronic acid, with leukocyte-poor PRP ranked first (P-score 0.96) — a materially more favourable read of PRP than the RESTORE trial, which is why this corpus presents both.

   Journal of Orthopaedic Surgery and Research authors — Leukocyte-rich versus leukocyte-poor platelet-rich plasma and hyaluronic acid for knee osteoarthritis: a systematic review and network meta-analysis.. Journal of Orthopaedic Surgery and Research, 2026. DOI: 10.1186/s13018-026-06689-4.