Knee replacement alternatives that may ease soreness

Where do knee replacement alternatives begin?

Begin with movement that builds the muscles above and below your knee. A cane, brace, or pain gel may make that movement easier. These choices don't rebuild cartilage, the smooth covering on bone ends, but they may ease soreness.

Simple home care deserves a steady try.

What kind of exercise helps?

A physical therapist can teach safe ways to strengthen your thigh and hip, while walking, a seated bike, or water exercise may also suit your knee. Start with an amount that doesn't cause worse soreness for several days, then add more slowly.

The exercises help only while you keep doing them.

Alternatives to knee replacement surgery: can medicine help?

Pain gel works near the knee, so less medicine reaches the rest of your body. Pills may also help, but some aren't safe for the stomach, heart, or kidneys. Ask your doctor to check your medicine list before you use them often.

Stop and call your doctor if a medicine causes trouble.

How long can a steroid shot help?

A steroid shot can calm a short spell of worse soreness. The relief may help you move while starting exercise or getting through a busy time. Repeated shots aren't a lasting answer for a worn joint.

Ask how long relief may last and how often a shot is safe.

What are platelet-rich plasma (PRP) and biologic therapies from your body?

Platelet-rich plasma (PRP) is made by spinning a small blood sample to gather more platelets, then putting that liquid into the knee. Biologic therapies are clinic treatments made from material from your body, such as the blood used for PRP. Results differ, so ask what is used and what it costs.

You need plain answers before agreeing to care.

When do I need another exam?

Return when the knee keeps worsening despite steady care at home. Write down changes in sleep, walking, swelling, and medicine use. Those notes help the doctor compare further home care with surgery. Don't trust claims that cartilage, the smooth bone covering, can be rebuilt.

Bring the notes to your next exam.

Sources

1. 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.. Arthritis & Rheumatology, 2020. DOI: 10.1002/art.41142.

2. OARSI 2019 designates arthritis education plus structured land-based exercise (with or without dietary weight management) as CORE treatments for knee OA; topical NSAIDs are strongly recommended (Level 1A); oral and transdermal opioids are strongly NOT recommended (Level 5).

   Bannuru RR, 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.

3. 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.

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.. JAMA, 2017. DOI: 10.1001/jama.2017.5283.

5. The RESTORE trial randomized 288 adults aged 50+ with symptomatic mild-to-moderate medial knee OA to three weekly leukocyte-poor PRP injections or saline placebo. At 12 months, pain change was -2.1 vs -1.8 points (difference -0.4; 95% CI -0.9 to 0.2; P=.17) and medial tibial cartilage volume change was -1.4% vs -1.2% (P=.81). 29 of 31 prespecified secondary outcomes showed no significant between-group difference. The authors concluded the findings 'do not support use of PRP for the management of knee OA.'

   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.

6. 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. FDA (Center for Biologics Evaluation and Research), 2020.

7. A safety review of intra-articular PRP in knee OA found significantly higher rates of mild knee pain and swelling than hyaluronic acid (p<0.001), driven specifically by leukocyte-RICH formulations; leukocyte-poor PRP showed a safety profile similar to HA. No severe adverse events were reported in any group.

   PM&R authors — Assessment of adverse events and safety associated with intra-articular platelet-rich plasma injections compared with hyaluronic acid and saline in knee osteoarthritis.. PM&R, 2026. DOI: 10.1002/pmrj.70141.