# What do you need to know about cartilage care? *Cartilage Repair Scottsdale — answers to common questions* > Cartilage repair Scottsdale answers about soreness, MACI, microfracture, insurance, home care, and local nonsurgical options. Which questions matter after a scan shows cartilage damage? Most concern soreness, surgery, cost, and what you can do at home. The scan shows where tissue is worn. It may suggest a cause, but it can't tell how you feel. An exam checks whether the sore place matches the damaged area. Use these answers to prepare for that visit. ## Sources 1. The NIHR health technology assessment of autologous chondrocyte implantation reviewed the trials and built a new economic model. Survival analysis suggested better long-term results with ACI than microfracture, and in most analyses the incremental cost-effectiveness ratios for ACI versus microfracture fell within a range usually considered acceptable. The assessment flagged the absence of randomised data beyond five years, and that the long-term data come from forms of ACI now superseded. Mistry H, et al. — [Autologous chondrocyte implantation in the knee: systematic review and economic evaluation.](https://pubmed.ncbi.nlm.nih.gov/28244303/). *Health Technol Assess*, 2017. DOI: 10.3310/hta21060. 2. FDA biologics licence BL 125603 (Vericel) describes MACI verbatim as "an autologous cellularized scaffold product indicated for the repair of symptomatic, single or multiple full-thickness cartilage defects of the knee with or without bone involvement in adults." The licensed indication is a two-stage surgical implantation for full-thickness DEFECTS of the knee in adults. It is not an injection, it is not licensed for osteoarthritis, and it is not licensed for any joint other than the knee. U.S. Food and Drug Administration — [MACI (autologous cultured chondrocytes on porcine collagen membrane)](https://www.fda.gov/vaccines-blood-biologics/cellular-gene-therapy-products/maci-autologous-cultured-chondrocytes-porcine-collagen-membrane). *FDA, Center for Biologics Evaluation and Research*, 2024. 3. FDA's consumer alert states verbatim of stem cell products, exosome products, adipose-derived stromal vascular fraction, umbilical cord blood, Wharton's Jelly and amniotic fluid products: "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 stem cell products carrying FDA licensure are blood-forming cells derived from umbilical cord blood, licensed only for disorders of blood production, and there are currently no licensed exosome products. U.S. Food and Drug Administration — [Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes](https://www.fda.gov/vaccines-blood-biologics/consumers-biologics/consumer-alert-regenerative-medicine-products-including-stem-cells-and-exosomes). *FDA, Consumers (Biologics)*, 2020. 4. Forty-five people who had had a partial medial meniscectomy 3-5 years earlier were randomised to four months of supervised exercise three times weekly or to no intervention. The exercise group improved cartilage glycosaminoglycan content measured by dGEMRIC relative to controls (+15 ms versus -15 ms; P = 0.036), with a strong dose-response to reported activity. Adult cartilage can adapt its composition to loading - which is not the same as filling a hole in it. Roos EM, et al. — [Positive effects of moderate exercise on glycosaminoglycan content in knee cartilage: a four-month, randomized, controlled trial in patients at risk of osteoarthritis.](https://pubmed.ncbi.nlm.nih.gov/16258919/). *Arthritis Rheum*, 2005. DOI: 10.1002/art.21415. 5. A meta-analysis of 24 MRI studies (446 knees) found knee cartilage thickness and volume drop 3.3% to 4.9% immediately after a run, that T2 relaxation times return to baseline within about 91 minutes, and that existing cartilage defects were unchanged within 48 hours of running. The certainty of evidence was very low, but there is no measured sign that a run damages the joint surface. Coburn SL, et al. — [Is running good or bad for your knees? A systematic review and meta-analysis of cartilage morphology and composition changes in the tibiofemoral and patellofemoral joints.](https://pubmed.ncbi.nlm.nih.gov/36402349/). *Osteoarthritis Cartilage*, 2023. DOI: 10.1016/j.joca.2022.09.013. ## How much does MACI surgery using your own cartilage cells cost? There isn't one set price. MACI means matrix-induced autologous chondrocyte implantation. One operation takes cartilage cells from your knee, and a lab grows them. Another operation places those cells into the damaged spot. Ask for a written estimate covering both operations, anesthesia, the facility, later visits, and rehab. ## Does insurance cover MACI using your own cartilage cells? Coverage depends on your plan and the damage shown in your records. Ask whether each operation needs its own approval. For MACI, the product charge pays for the sheet that carries your grown cartilage cells. Ask the surgeon's billing office and your health plan whether that charge is included. Keep every answer and estimate in writing. ## What does microfracture surgery involve? The surgeon makes small openings in the bone beneath the damaged cartilage. Blood and marrow cells pass through and form a covering over the bare spot. That covering isn't the same as your original smooth cartilage. Ask whether earlier microfracture could affect another cartilage operation later. ## How is an osteochondral defect involving cartilage and bone different? An osteochondral defect is one damaged spot involving cartilage and the bone beneath it. Damage limited to cartilage stops before the bone. That difference can change which operation a surgeon considers. Ask the clinician to show you the spot and explain whether it matches where you hurt. ## What can I do for knee cartilage damage at home? Cut back the movement that brings swelling or sharp soreness. Slowly bend and straighten the knee within a comfortable limit. Gentle exercises can support it, and a cane or rail may make walking safer. Don't ignore locking, fast swelling, or a knee that won't hold your weight. Get medical care for those signs. ## When should I ask about chondromalacia treatment for softened kneecap cartilage? Chondromalacia means softened or damaged cartilage, often under the kneecap. Ask about chondromalacia treatment when soreness there keeps returning or limits normal tasks. An exam checks movement, strength, and the tender place. Bring notes about stairs, sitting, and walking, since each may affect the soreness differently. ## Can QC Kinetix discuss cartilage restoration? Cartilage restoration usually refers to surgery that repairs one damaged spot. QC Kinetix doesn't promise that cartilage will return. Its Scottsdale clinicians offer regenerative treatment options, including platelet-rich plasma (PRP) prepared from your spun blood and placed into the sore joint without surgery. Bring your scan report so they can tell you whether the visit fits your concern. ## Have the sore joint checked At the Scottsdale office, a clinician reviews your soreness, daily limits, and goals. QC Kinetix offers consultations and regenerative treatment options, including PRP made from your spun blood and placed into the joint without surgery. Ask whether the visit fits your concern or whether you need an orthopedic exam. Book a free consultation: --- Clear answers for a sore joint. Learn what may cause joint soreness, what can help at home, when to seek care, and which choices a clinician may discuss. Plain help with a sore joint, steps at home, doctor visits, and cartilage choices in Scottsdale. This publication is operated by the owners of QC Kinetix's Phoenix-area clinics, with that clinic relationship disclosed wherever an appointment is suggested. © 2026 Scottsdale Cartilage Desk. General education only; personal medical and insurance decisions require qualified professionals and your own plan documents.