What to do when soreness isn't only in the knee

What to try for the place that hurts

Easy movement and warmth may loosen a stiff knee or hip. A shoulder may settle when you pause repeated reaching. Feet and elbows often ache after one task gets overdone. Back soreness can change with sitting, lifting, or sleep position.

Change the activity without giving up all movement, unless your doctor says otherwise. Use warmth for stiffness or ice after a task stirs the ache. Keep exercise easy enough that you don't hurt more hours later. I'd check the sore area again that evening and the next morning.

Write down the exact motion that hurts. Add what settles the ache and whether you notice weakness or swelling. Lost sleep belongs in your note too. These facts help the doctor examine the right area.

When to go in and what to ask

Book routine care when soreness changes how you walk, dress, drive, or sleep. Go sooner after a bad fall or with sudden weakness. A very hot, swollen joint or fever needs quick attention. Don't keep reading reviews while urgent trouble grows.

Show the exact movement that hurts during the visit. Ask what the exam or X-ray says about that body part. An exam or X-ray from one joint can't decide care for another. Discuss home care, medicine, and physical therapy before you choose anything.

Don't miss this point. Ask what doctors know about your sore area and what remains uncertain. A firm answer should still admit what isn't known.

A treatment for one body part still needs its own explanation. Don't assume a blood-based choice works the same way everywhere. QC Kinetix's medical providers—the clinic staff who examine you and perform care—offer concentrated PRP, meaning platelet-rich plasma made by drawing and spinning your blood before placing the platelet-rich part at the sore area, as a non-surgical regenerative choice for soreness due to a condition.

Evidence sources

1. A network meta-analysis of 11 RCTs (1,353 patients) with HIP osteoarthritis found that at 2-4 and 6 months NO intervention - corticosteroid, hyaluronic acid or PRP - significantly outperformed intra-articular saline placebo for either pain or function, while all interventions including placebo produced improvement exceeding the minimal clinically important difference from baseline. Evidence from the knee does not transfer to the hip.

   Gazendam A, et al. — Intra-articular saline injection is as effective as corticosteroids, platelet-rich plasma and hyaluronic acid for hip osteoarthritis pain: a systematic review and network meta-analysis of randomised controlled trials.. British Journal of Sports Medicine, 2021.

2. A meta-analysis of 11 RCTs (730 patients) with lateral epicondylitis found the timing reverses the answer: corticosteroid was significantly BETTER than PRP in the short term (under 2 months: VAS mean difference 0.93 favouring steroid; DASH 10.23 favouring steroid), the two did not differ at 2-6 months, and PRP was significantly better at 6 months or more (VAS -2.18; DASH -8.13; Mayo Elbow +16.53).

   Xu Y, et al. — Platelet-Rich Plasma Has Better Results for Long-term Functional Improvement and Pain Relief for Lateral Epicondylitis: A Systematic Review and Meta-analysis of Randomized Controlled Trials.. American Journal of Sports Medicine, 2024.

3. A meta-analysis of 27 RCTs (1,779 patients) across rotator cuff injury, lateral epicondylitis, plantar fasciitis and tenosynovitis found no PRP advantage at one month anywhere, and in some tendons corticosteroid was better early; PRP overtook corticosteroid at 3 months for rotator cuff VAS and at 6 months for plantar fasciitis VAS and AOFAS and for tenosynovitis VAS.

   Ye Z, et al. — Platelet-rich plasma and corticosteroid injection for tendinopathy: a systematic review and meta-analysis.. BMC Musculoskeletal Disorders, 2025.

4. A meta-analysis of 24 RCTs (1,653 participants) with plantar fasciitis found PRP produced significantly better VAS pain than corticosteroid at 3 and 6 months but not at 1 month or 12 months, and better AOFAS function scores at 3, 6 and 12 months. Plantar fascia thickness did not differ significantly at any time point.

   Zuo A, et al. — Platelet-Rich Plasma Versus Corticosteroids in the Treatment of Plantar Fasciitis: A Systematic Review and Meta-analysis.. American Journal of Physical Medicine & Rehabilitation, 2025.

5. A meta-analysis with meta-regression of 10 Level I-II studies (696 patients) of PRP augmentation during rotator cuff repair classified trials by whether the platelet concentration factor exceeded a 4-fold increase over whole blood. Neither patient-reported outcomes nor retear rates differed between high-dose and low-dose PRP - a direct test of the 'more platelets is better' premise, which it did not support in this setting.

   Lim JJ, et al. — Platelet Concentration Does Not Influence Clinical Efficacy and Retear Rates of Rotator Cuff Repair With Platelet-Rich Plasma: A Systematic Review and Meta-analysis With Meta-Regression.. American Journal of Sports Medicine, 2026.

6. A multicenter prospective crossover randomized trial randomised 40 patients with discogenic chronic low back pain to a saline trigger-point control, intradiscal PRP, or intradiscal bone marrow concentrate, with crossover permitted for non-responders. Both PRP and BMC produced statistically significant improvement in pain and function with no adverse events, hospitalisations or surgery at 12 months - but ALL placebo patients reported under 50% relief and crossed over, and the trial was small and open-label.

   Navani A, et al. — The Safety and Effectiveness of Orthobiologic Injections for Discogenic Chronic Low Back Pain: A Multicenter Prospective, Crossover, Randomized Controlled Trial with 12 Months Follow-up.. Pain Physician, 2024.

7. The AAOS patient-education FAQ on orthobiologics states that because orthobiologics are relatively new the evidence supporting their use is LIMITED, that rigorous testing of effectiveness in most orthopedic conditions is lacking, and that preliminary results are encouraging but hard to evaluate. It names tendinopathies such as tennis elbow, pain from early knee osteoarthritis, adjunct healing after rotator cuff repair, and avascular necrosis as the settings where biologic therapies have shown promise, and notes that stem cell treatments not derived from the patient's own body and further manipulated in a laboratory can only be offered inside an FDA-approved clinical trial.

   American Academy of Orthopaedic Surgeons — Orthobiologics (Regenerative Medicine) FAQ. OrthoInfo (AAOS), 2024.