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The knee is one of the most commonly injured joints in sport and everyday life. Dr. Andrew Dold, a board-certified, fellowship-trained sports medicine surgeon in Frisco, Texas, treats the full range of knee conditions, from ligament and meniscus injuries to cartilage damage, tendon ruptures, fractures and arthritis. Choose a condition below to learn about symptoms, diagnosis, treatment options and the research behind them.

On this page:Ligament injuries · Meniscus, cartilage and arthritis · Kneecap and tendon problems · Fractures · Bursitis and cysts · Procedures · Patient Q&A · FAQs · Research

Not sure what is causing your pain? Start with our Knee Pain Guide, organized by where it hurts.

Ligament injuries

ACL tearsTorn anterior cruciate ligament, a common sports injury that causes the knee to give wayPCL tearsTorn posterior cruciate ligament, often from a fall onto a bent knee or a dashboard injuryMCL tearsInner-knee ligament sprains and tears, usually treated with a brace and rehabLCL, posterolateral corner and multi-ligament injuriesOuter-knee and combined ligament injuries that often need surgeryPosteromedial corner injuriesInjuries to the back-inner corner of the knee, the subject of Dr. Dold’s JAAOS review

Meniscus, cartilage and arthritis

Meniscus tearsTears of the knee’s shock-absorbing cartilage, including root tearsDiscoid meniscusAn unusually shaped meniscus, often found in children and teenagersCartilage defects and OCDDamage to the joint’s cartilage lining, including osteochondritis dissecansKnee osteoarthritisWear of the joint cartilage, from exercise and injections to osteotomy and knee replacementPatellofemoral arthritis and chondromalaciaCartilage wear behind the kneecap that hurts on stairs, squatting and sittingKnee osteonecrosis and SONKLoss of blood supply or an insufficiency fracture in the bone near the knee joint

Kneecap and tendon problems

Kneecap dislocation and instabilityA kneecap that slips or dislocates out of its grooveRunner’s knee (patellofemoral pain)Pain around or behind the kneecap with running, stairs or sittingPatellar tendinitis (jumper’s knee)Pain in the tendon below the kneecap from jumping and runningQuadriceps tendon ruptureA tear of the tendon above the kneecap that stops you straightening the legPatella tendon ruptureA tear of the tendon below the kneecap, usually repaired surgicallyQuadriceps tendinitisPain in the tendon just above the kneecap from jumping, squatting or runningPlica syndromeAn irritated fold of joint lining that can catch or ache at the front of the kneeOsgood-Schlatter diseaseA painful bump below the kneecap in growing, active children and teenagers

Fractures

Patella (kneecap) fractureA broken kneecap from a fall or direct blowKnee fracturesTibial plateau, distal femur and avulsion fractures around the kneeTibial spine fractureThe childhood version of an ACL tear, most common between ages 8 and 14

Bursitis and cysts

Pes anserine bursitisInner-knee pain just below the joint, often with arthritisBaker’s cystA fluid-filled swelling behind the knee, usually from a problem inside the jointPrepatellar bursitisSwelling over the front of the kneecap, often from kneeling

Knee procedures and treatments

Arthroscopic meniscus repairSaving the meniscus whenever possibleKnee osteotomy (HTO, DFO, TTO)Realigning the leg or kneecap to unload a damaged areaCartiHeal Agili-CAn implant for cartilage and bone defectsRobotic knee replacementTotal and partial knee replacement for advanced arthritisCartilage repair and transplantationMicrofracture, OATS, allograft and MACIPlatelet-rich plasma (PRP)What the evidence shows for knee injections

Patient questions answered

Browse all Patient Q&A (searchable, with knee, hip, shoulder and foot and ankle topics) or ask a question that isn’t answered yet.

Dr. Dold’s knee research

  • The posteromedial corner of the knee (JAAOS, 2017; first author). A review of the anatomy, injury patterns and management of the back-inner corner of the knee.1
  • Transtibial medial meniscal root repair (KSSTA, 2017; co-author). In 18 patients followed for about 2 years after root repair, knee function scores improved significantly, although MRI showed increased meniscal extrusion and cartilage wear.2
  • Osteochondral and meniscal allograft transplant (Arthroscopy Techniques, 2016; co-author). A surgical technique for transplanting donor cartilage, bone and meniscus.3
  • Injectable biologic treatments for knee osteoarthritis (JBJS Reviews, 2017; co-author).4
  • PRP for cartilage damage and arthritis (Clin J Sport Med, 2014; first author). A systematic review of platelet-rich plasma for cartilage pathology.5

Why see Dr. Dold

  • Board certified by the American Board of Orthopaedic Surgery, with subspecialty certification in Sports Medicine
  • Sports medicine and arthroscopy fellowship at NYU Langone / Hospital for Joint Diseases; orthopedic residency at the University of Toronto
  • Fellow of the American College of Surgeons (FACS), the American Academy of Orthopaedic Surgeons (FAAOS), the American Orthopaedic Association (FAOA) and the Royal College of Surgeons of Canada (FRCSC)
  • Published research on knee ligament and meniscus surgery, including The Posteromedial Corner of the Knee (JAAOS, 2017) and transtibial meniscal root repair (KSSTA, 2017)
  • Team physician and surgical consultant to Rugby Canada; has cared for professional athletes from the NFL, NBA, NHL, MLS, PGA Tour and Major League Rugby
  • D Magazine Best Doctors (Collin County), 2019–2026 · Rated 4.9 on Google

Frequently asked questions

When should I see a doctor for knee pain?

See a doctor promptly if your knee gave way or popped during an injury, swells quickly, locks, cannot bear weight or cannot be straightened. Pain that lasts more than a few weeks despite rest is also worth checking.

Do I need an MRI for my knee?

Not always. Dr. Dold starts with an examination and X-rays, and orders an MRI when it will change the treatment plan, such as for a suspected ligament, meniscus or cartilage injury.

Does every knee injury need surgery?

No. Many knee conditions, including MCL sprains, runner’s knee, bursitis and many cases of arthritis, are treated without surgery. Each condition page explains when surgery is recommended.

Can I be seen quickly?

Walk-in visits are available Monday, Wednesday and Friday, 8:30 to 10:30 am, or you can request an appointment online or by calling 469-850-0680.

Do you accept my insurance?

Dr. Dold accepts most major insurance plans, including Medicare and Tricare. Please call 469-850-0680 to confirm your coverage.

Research cited on this page

  1. Dold AP, Swensen S, Strauss E, Alaia M. The Posteromedial Corner of the Knee: Anatomy, Pathology, and Management Strategies. J Am Acad Orthop Surg. 2017;25(11):752-761. PubMed
  2. Kaplan DJ, Alaia EF, Dold AP, et al. Increased extrusion and ICRS grades at 2-year follow-up following transtibial medial meniscal root repair evaluated by MRI. Knee Surg Sports Traumatol Arthrosc. 2018;26(9):2826-2834 (Epub 2017). PubMed
  3. Gonzalez-Lomas G, Dold AP, Kaplan DJ, Fralinger DJ, Jazrawi L. Osteochondral Proximal Tibial and Lateral Meniscal Allograft Transplant. Arthrosc Tech. 2016;5(5):e953-e958. PubMed
  4. Weinberg ME, Kaplan DJ, Pham H, Goodwin D, Dold A, Chiu E, Jazrawi LM. Injectable Biological Treatments for Osteoarthritis of the Knee. JBJS Rev. 2017;5(4):e2. PubMed
  5. Dold AP, Zywiel MG, Taylor DW, Dwyer T, Theodoropoulos J. Platelet-rich plasma in the management of articular cartilage pathology: a systematic review. Clin J Sport Med. 2014;24(1):31-43. PubMed
Ready to get it checked? Request an appointment online or call 469-850-0680. Our staff will contact you by phone and text within an hour of your request (during business hours, Monday–Friday, 8 am–5 pm). Walk-in visits are welcome Monday, Wednesday and Friday, 8:30–10:30 am at 6700 Dallas Parkway, Suite 100, Frisco, TX 75034. We see patients from Frisco, Plano, McKinney, Prosper, Little Elm, The Colony, Allen, Dallas and across North Texas. Same-day appointments available.

Request an AppointmentCall 469-850-0680

Medically reviewed by Andrew P. Dold, MD, FAOA, FAAOS, FACS, FRCSC. Last reviewed October 2026. This page is general information, not medical advice. Individual results vary.