When soreness needs care and what to bring

When to seek help right away

Seek care soon when pain grows worse each day or keeps worsening week by week. Night pain that won't ease also needs a medical visit. So do unexplained weight loss or a history of cancer. Long morning stiffness in more than one swollen joint can mean more than ordinary wear.

A doctor needs to find the cause before any planned procedure.

Call the office that did a recent procedure if swelling or drainage appears. A fever makes that call more urgent. If you aren't sure where to go, seek medical care instead of waiting for the soreness to settle.

What makes a planned visit worthwhile

Plan a visit when soreness returns, limits walking, or breaks your sleep. The clinician will ask when the ache started and what makes it worse. The exam may check tender spots, swelling, movement, and strength. An X-ray may show wear or marks from an old injury.

The X-ray finding and your daily limits both matter.

Tell the clinician about physical therapy, braces, a cane, and medicines you've tried. Say if you bleed easily or take blood thinners. Mention any infection you have now. Also mention immune problems, meaning an illness that lowers your defense against germs or a drug that does the same. Before changing a prescribed drug, speak with the doctor who ordered it.

What to bring to the consultation

Take your written medicine names, earlier X-rays, and notes about a usual task. Say how far you can walk or which arm movement hurts. Have the clinician explain the exam and name the choices that fit it. Ask about likely cost, risks, and recovery time.

If PRP comes up, ask what could make that blood-based procedure unsafe for you.

PRP is part of your blood with more clotting pieces called platelets. The answer may point you toward another choice. While you wait, move only enough that you don't limp or use your other hand to lift the sore arm.

Sources

1. The RESTORE trial - a participant-, injector- and assessor-blinded RCT of 288 adults aged 50+ with symptomatic medial knee OA (Kellgren-Lawrence 2-3) - compared three weekly intra-articular PRP injections against saline placebo, with co-primary endpoints of 12-month knee pain and medial tibial cartilage volume on MRI. PRP did not beat placebo on either. It is the single best-designed test of the specific claim that PRP changes joint structure, and it was negative.

   Bennell KL, 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.

2. A four-arm, multicentre, single-blind phase 2/3 randomized trial of 480 knee OA patients (KL II-IV) compared autologous bone marrow aspirate concentrate, autologous adipose stromal vascular fraction and allogeneic umbilical-cord-tissue mesenchymal stromal cells against a corticosteroid injection control. At 12 months NONE of the three orthobiologic injections was superior to another, or to the corticosteroid control, and none of the four groups showed a significant change in MRI osteoarthritis score from baseline. No procedure-related serious adverse events occurred.

   Mautner K, et al. — Cell-based versus corticosteroid injections for knee pain in osteoarthritis: a randomized phase 3 trial.. Nature medicine, 2023. DOI: 10.1038/s41591-023-02632-w.

3. A 2026 systematic review and meta-analysis of 28 randomized trials of intra-articular mesenchymal stem cell-based therapies in knee OA found significant improvements in several pain and function measures (delta-VAS MD -1.67; KOOS pain MD 15.37) but NO significant difference in WOMAC, KOOS quality of life or the Lequesne index, and MRI-based WORMS scores were non-significant - indicating no consistent structural benefit. Its own conclusion: these therapies serve a primarily SYMPTOM-modifying rather than STRUCTURE-modifying role, with higher frequencies of local reactions to weigh against the symptomatic benefit.

   Awad G, et al. — Efficacy and safety of intra-articular mesenchymal stem cell-based therapies in knee osteoarthritis: A systematic review and meta-analysis of randomized controlled trials.. Clinical rheumatology, 2026. DOI: 10.1007/s10067-026-08042-w.

4. The Cochrane review of exercise for knee osteoarthritis found high-quality evidence that land-based therapeutic exercise provides short-term benefit in pain and physical function, sustained for at least 2-6 months after the programme ends, with mild transient soreness the only reported adverse effect across 45 trials. It is the best-evidenced treatment for this condition and it costs nothing per injection.

   Fransen M, et al. — Exercise for osteoarthritis of the knee.. The Cochrane database of systematic reviews, 2015. DOI: 10.1002/14651858.CD004376.pub3.

5. A randomized trial in the New England Journal of Medicine compared physical therapy against intra-articular glucocorticoid injection for knee osteoarthritis and found physical therapy produced better WOMAC outcomes at one year. When a clinic offers an injection, the comparator that matters is not 'nothing' - it is a course of supervised exercise.

   Deyle GD, et al. — Physical Therapy versus Glucocorticoid Injection for Osteoarthritis of the Knee.. The New England journal of medicine, 2020. DOI: 10.1056/NEJMoa1905877.

6. The AAOS clinical practice guideline summary on SURGICAL management of knee osteoarthritis - the other end of the ladder, and the honest comparator for anyone told a biologic injection will let them avoid an operation.

   Srivastava AK, et al. — American Academy of Orthopaedic Surgeons Clinical Practice Guideline Summary of Surgical Management of Osteoarthritis of the Knee.. The Journal of the American Academy of Orthopaedic Surgeons, 2023. DOI: 10.5435/JAAOS-D-23-00338.

7. FDA states plainly that no stem cell, exosome, stromal vascular fraction, umbilical cord blood, Wharton's jelly or amniotic-fluid product has been approved for the treatment of ANY orthopedic condition - it names osteoarthritis, tendonitis, disc disease, tennis elbow, back pain, hip pain, knee pain, neck pain and shoulder pain individually. The only FDA-approved stem cell products in the United States are cord-blood-derived blood-forming stem cells for disorders of the hematopoietic system, and there are currently no FDA-approved exosome products.

   US Food and Drug Administration, Center for Biologics Evaluation and Research — Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes. FDA, 2020.