# Joint Pain Authority > Joint Pain Authority is an evidence-based information platform for adults with joint pain — primarily Medicare beneficiaries 65 and older — covering knee, hip, and shoulder conditions, viscosupplementation and injection treatments, brand-by-brand insurance coverage details, and Medicare Part B guidance. Our content helps patients compare treatment options, understand their coverage, and make informed decisions before their next appointment. ## Conditions - [Knee Osteoarthritis](https://jointpainauthority.com/conditions/knee-osteoarthritis/): Causes, symptoms, and treatment options for the most common form of knee arthritis - [Hip Arthritis](https://jointpainauthority.com/conditions/hip-arthritis/): Non-surgical treatments for degenerative hip joint disease - [Shoulder Osteoarthritis](https://jointpainauthority.com/conditions/shoulder-osteoarthritis/): Causes, stages, and treatment options for shoulder joint degeneration - [Degenerative Joint Disease](https://jointpainauthority.com/conditions/degenerative-joint-disease/): Understanding osteoarthritis progression and treatment stages - [Bursitis](https://jointpainauthority.com/conditions/bursitis/): Symptoms, causes, and treatment options for joint bursa inflammation ## Treatments - [Hyaluronic Acid Injections](https://jointpainauthority.com/treatments/hyaluronic-acid-injections/): Complete guide to viscosupplementation therapy for joint pain - [Cortisone Injections](https://jointpainauthority.com/treatments/cortisone-injections/): Benefits, risks, and what to expect from corticosteroid joint treatment - [PRP Injections](https://jointpainauthority.com/treatments/prp-injections/): Platelet-rich plasma therapy guide and evidence review for joint pain - [Physical Therapy](https://jointpainauthority.com/treatments/physical-therapy/): Evidence-based exercise treatment for joint pain and osteoarthritis - [Arthrosamid Knee Injection](https://jointpainauthority.com/treatments/arthrosamid-knee-injection-guide/): Complete 2026 guide to polyacrylamide hydrogel injection for knee OA ## Brand Comparisons - [Hyaluronic Acid vs. Cortisone Injections](https://jointpainauthority.com/compare/ha-vs-cortisone/): Duration, effectiveness, and safety — which injection is right for you? - [Cortisone vs. Gel Injections](https://jointpainauthority.com/compare/cortisone-vs-gel-injections/): Head-to-head comparison for knee pain treatment - [Durolane vs. Synvisc](https://jointpainauthority.com/compare/durolane-vs-synvisc/): Single-injection HA brands compared on efficacy, cost, and coverage - [Euflexxa vs. Synvisc](https://jointpainauthority.com/compare/euflexxa-vs-synvisc/): Fermentation-derived vs. rooster-derived hyaluronic acid comparison - [Gel Injections vs. Knee Replacement](https://jointpainauthority.com/compare/gel-injections-vs-knee-replacement/): When to consider surgery versus continued injection therapy - [Arthrosamid vs. Cortisone](https://jointpainauthority.com/compare/arthrosamid-vs-cortisone/): Permanent hydrogel versus steroid injection — what to choose ## Insurance & Coverage - [Medicare Coverage for Knee Injections](https://jointpainauthority.com/insurance/medicare/): Complete 2026 guide to Medicare Part B coverage for joint injections - [Medicare Part B Joint Pain Coverage](https://jointpainauthority.com/insurance/medicare-part-b/): Part B coverage rules, eligibility, and cost-sharing for joint treatments - [Medicare Viscosupplementation Coverage](https://jointpainauthority.com/insurance/medicare-viscosupplementation/): Medicare coverage rules and medical necessity criteria for HA injections - [Aetna Coverage for Knee Injections](https://jointpainauthority.com/insurance/aetna/): Aetna policy guide for viscosupplementation and joint treatments - [Humana Coverage for Knee Injections](https://jointpainauthority.com/insurance/humana/): Humana coverage guide for joint pain treatments - [Cigna Coverage for Joint Pain Treatments](https://jointpainauthority.com/insurance/cigna/): Cigna prior authorization and coverage policies for injections ## Cost Guides - [Knee Gel Injection Cost](https://jointpainauthority.com/blog/knee-gel-injection-cost-guide/): 2026 prices with and without insurance for all major HA brands - [Durolane Injection Cost](https://jointpainauthority.com/blog/durolane-injection-cost-guide/): What you'll pay ($300–$1,465) with Medicare, private insurance, or self-pay - [Synvisc-One Cost](https://jointpainauthority.com/blog/synvisc-one-injection-cost-guide/): Per-injection pricing, Medicare cost, and how to pay less - [Hyalgan Injection Cost](https://jointpainauthority.com/blog/hyalgan-injection-cost-guide/): Medicare and self-pay pricing guide for 2026 - [Euflexxa Injection Cost](https://jointpainauthority.com/blog/euflexxa-injection-cost-guide/): What you'll pay in 2026 with and without insurance