Skip to content
Phoenix Tendon Map
An anatomy-first PRP field guide

Phoenix Tendon Map

What people ask about soreness and PRP

What to ask for a straight answer

Soreness that lasts raises questions about comfort, cost, and daily activity. These short replies cover common concerns before a clinic visit. They don't identify the sore tissue, but they'll help you prepare for an exam.

How sore can the PRP blood shot feel?

PRP stands for platelet-rich plasma. Blood drawn at the clinic goes through a spinning machine, and staff use the platelet-heavy layer for the shot. Soreness and swelling can continue for several days, though experiences differ, so ask whom to call if fever, redness, heat, or worsening pain appears.

What can help a sore outer elbow?

Reduce hard gripping and repeated turning for a while. Gentle motion and suitable strength work may help the elbow handle daily use again. Stop if soreness turns sharp or the arm feels weak, and arrange an exam when the problem keeps returning.

What can help soreness under the heel?

Supportive shoes and shorter walks may reduce strain while the heel settles. Gentle strength work can help when it matches the sore tissue. Plantar fascia means the sturdy band along the foot's underside, but other tissue may hurt there, so seek an exam if walking stays difficult.

Can PRP rebuild worn knee cartilage?

Current human research hasn't shown that PRP rebuilds knee cartilage. PRP is made from a person's own blood, but that doesn't prove new tissue will grow. A clinic discussion should focus on soreness and function, including what result is realistic for your examined knee.

What must I avoid after a PRP procedure?

Follow the instructions for your treated body part. Ask the clinician who prescribed aspirin, anti-inflammatory medicine, or a blood thinner before stopping any of them. Ask when activity may resume, and seek prompt care for fever, spreading redness, calf swelling, lost function, or new weakness.

What affects PRP injection cost, the price of the blood shot, in Phoenix?

Prices and coverage vary, so ask the clinic for a written quote. Check whether the exam, blood shot, and follow-up are included, then ask your insurer about your plan. Payment terms don't show whether PRP fits your health or the sore area.

Sources

  1. A 12-centre randomized controlled trial of 230 patients with chronic lateral epicondylar tendinopathy compared tendon needling with leukocyte-enriched PRP against tendon needling alone. At 12 weeks there was no significant difference (55.1% versus 47.4% pain improvement; P=.163). At 24 weeks the PRP group reported 71.5% versus 56.1% pain improvement (P=.019), a 83.9% versus 68.3% success rate (P=.037), and significantly less residual elbow tenderness (29.1% versus 54.0%; P=.009). No significant complications occurred in either group.

    Mishra AK, Skrepnik NV, Edwards SG, et al. — Efficacy of platelet-rich plasma for chronic tennis elbow: a double-blind, prospective, multicenter, randomized controlled trial of 230 patients. American Journal of Sports Medicine, 2014. DOI: 10.1177/0363546513494359.

  2. A meta-analysis of 11 randomized trials (730 patients) with lateral epicondylitis found corticosteroid better than PRP in the short term (under 2 months) on VAS pain (MD 0.93; 95% CI 0.42-1.44) and DASH (MD 10.23; 95% CI 9.08-11.39), while PRP was better in the long term (6 months or more) on VAS (MD -2.18; 95% CI -3.13 to -1.22), DASH (MD -8.13) and Mayo Elbow Performance Score (MD 16.53). The two treatments trade places over time rather than one dominating.

    Xu Y, Li T, Wang L, 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. DOI: 10.1177/03635465231213087.

  3. A placebo-controlled, double-blind randomized trial of 40 patients with chronic rotator cuff tendinopathy compared a single ultrasound-guided subacromial injection of 5 mL PRP with 5 mL saline, with both groups completing a 6-week standard exercise programme and follow-up to one year. PRP did not produce better outcomes than saline on any measure - a reminder that the exercise programme, not the injectate, carried the improvement.

    Kesikburun S, Tan AK, Yilmaz B, et al. — Platelet-rich plasma injections in the treatment of chronic rotator cuff tendinopathy: a randomized controlled trial with 1-year follow-up. American Journal of Sports Medicine, 2013. DOI: 10.1177/0363546513496542.

  4. A systematic review and meta-analysis of nine randomized trials (239 PRP patients, 240 corticosteroid patients) in chronic plantar fasciitis found statistically significant differences in VAS pain favouring PRP at 1-1.5, 3, 6 and 12 months, and in AOFAS function favouring PRP at 6 and 12 months (no difference at 1 and 3 months).

    Hurley ET, Shimozono Y, Hannon CP, et al. — Platelet-Rich Plasma Versus Corticosteroids for Plantar Fasciitis: A Systematic Review of Randomized Controlled Trials. Orthopaedic Journal of Sports Medicine, 2020. DOI: 10.1177/2325967120915704.

  5. In a double-blind, placebo-controlled trial of 54 patients with chronic midportion Achilles tendinopathy, all doing eccentric exercises, VISA-A scores improved 21.7 points with PRP and 20.5 points with saline over 24 weeks - an adjusted between-group difference of -0.9 (95% CI -12.4 to 10.6), excluding the predefined relevant difference of 12 points. PRP added nothing to eccentric loading.

    de Vos RJ, Weir A, van Schie HT, et al. — Platelet-rich plasma injection for chronic Achilles tendinopathy: a randomized controlled trial. JAMA, 2010. DOI: 10.1001/jama.2009.1986.

  6. A 24-site, 240-patient participant-blinded randomized trial of a single intratendinous PRP injection versus a sham (subcutaneous dry needle) for chronic midportion Achilles tendinopathy found VISA-A scores of 54.4 versus 53.4 at six months (adjusted mean difference -2.7; 95% CI -8.8 to 3.3) against a 12-point minimal clinically important difference. The authors stated the findings do not support the use of this treatment for chronic midportion Achilles tendinopathy.

    Kearney RS, Ji C, Warwick J, et al. — Effect of Platelet-Rich Plasma Injection vs Sham Injection on Tendon Dysfunction in Patients With Chronic Midportion Achilles Tendinopathy: A Randomized Clinical Trial. JAMA, 2021. DOI: 10.1001/jama.2021.6986.

  7. An updated meta-analysis of six randomized trials (422 patients) found no benefit of PRP over placebo for Achilles tendinopathy on VISA-A at 3 months (mean difference 1.7; 95% CI -1.8 to 5.2), 6 months (0.5; 95% CI -8.5 to 9.3) or 1 year (-7.9; 95% CI -27.3 to 11.6), nor on VAS pain at 3 months. Funnel-plot asymmetry suggested publication bias inflating apparent benefits. The authors wrote that PRP should not be used to treat Achilles tendinopathy until high-quality trials show a clear clinical benefit.

    Barreto ESR, Antunes Junior CR, Silva IC, et al. — Is Platelet-rich Plasma Effective in Treating Achilles Tendinopathy? A Meta-analysis of Randomized Clinical Trials. Clinical Orthopaedics and Related Research, 2025. DOI: 10.1097/CORR.0000000000003349.

  8. The devices used to spin PRP at the point of care are cleared by FDA as clinical centrifuges, product code JQC, a Class I device under 21 CFR 862.2050 - for example the Biomet GPS Platelet Separation Kit (K030555, cleared 2003) and the Harvest SmartPrep2 / SmartPrep Platelet Concentration System (K103340, cleared 2010). That clearance covers the equipment that separates blood. It is not an FDA approval of platelet-rich plasma as a treatment for osteoarthritis, tendinopathy or any other orthopedic condition, and copy must never blur the two.

    U.S. Food and Drug Administration (Center for Devices and Radiological Health) — 510(k) Premarket Notification database and Product Classification: JQC, Centrifuges (Micro, Ultra, Refrigerated) For Clinical Use, 21 CFR 862.2050. FDA accessdata (CDRH device databases), 2003.

  9. Medicare's national coverage policy covers autologous platelet-rich plasma ONLY for patients with chronic non-healing diabetic, pressure and/or venous wounds, and only within an approved coverage-with-evidence-development clinical study. There is no Medicare national coverage for PRP in osteoarthritis or tendinopathy, which is why these injections are billed to the patient as cash-pay.

    Centers for Medicare & Medicaid Services — Autologous Platelet-rich Plasma (Coverage with Evidence Development). CMS.gov, 2024.

What to do when soreness keeps coming back

When soreness keeps returning, QC Kinetix offers regenerative options, its term for non-surgical care made with material already in your body. PRP is platelet-rich plasma; staff draw blood at the clinic, use a spinning machine to separate its layers, and give the platelet-heavy portion as a shot. A clinic clinician examines the area and explains what recovery may mean for your day.

For central and west Phoenix, Banner Estrella may be convenient. Other neighborhoods may be nearer Scottsdale, Peoria, or Chandler. Call (602) 837-PAIN to ask which location makes the drive easier.

Book a free consultation