John D MacGillivray, MD, PC
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Knee Conditions

  • ACL TearACL Tear

    The anterior cruciate ligament (ACL) is one of the major ligaments of the knee. It is located in the middle of the knee and runs from the femur (thighbone) to the tibia (shinbone). The ACL prevents the tibia from sliding out in front of the femur. Together with the posterior cruciate ligament (PCL), it provides rotational stability to the knee.

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  • Fractures of the PatellaFractures of the Patella

    The patella or kneecap is a small bone present in the front of your knee where the thighbone meets the shinbone. The kneecap of the patella forms part of the knee joint. It is present at the front of the knee, protecting the knee and providing attachment to various muscle groups of the thigh and leg.

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  • Jumper's KneeJumper's Knee

    Jumper’s knee, also known as patellar tendinitis, is inflammation of the patellar tendon that connects your kneecap (patella) to your shinbone. This tendon helps in the extension of the lower leg. Any damage to the supporting ligaments may cause the patella to slip our of the grove either partially (subluxation) or completely (dislocation).

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  • Knee ArthritisKnee Arthritis

    The joint surface is covered by a smooth articular surface that allows pain-free movement in the joint.

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  • Knee FractureKnee Fracture

    A fracture is a condition in which there is a break in the continuity of the bone.  In younger individuals, these fractures are caused by high energy injuries, as from a motor vehicle accident. In older people, the most common cause is a weak and fragile bone.

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  • Knee InjuryKnee Injury

    Pain, swelling, and stiffness are the common symptoms of any damage or injury to the knee. If care is not taken during the initial phases of injury, it may lead to joint damage, which may end up destroying your knee. 

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  • Knee OsteoarthritisKnee Osteoarthritis

    Osteoarthritis also called degenerative joint disease, is the most common form of arthritis. It occurs most often in older people. This disease affects the tissue covering the ends of bones in a joint (cartilage).In a person with osteoarthritis, the cartilage becomes damaged and worn out causing pain, swelling, stiffness and restricted movement in the affected joint.

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  • Knee Sports InjuriesKnee Sports Injuries

    Trauma is any injury caused during physical activity, motor vehicle accidents, electric shock, or other activities.

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  • Ligament InjuriesLigament Injuries

    Knee problems may arise if any of these structures get injured by overuse or suddenly during sports activities.

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  • Loose Bodies in the KneeLoose Bodies in the Knee

    Loose bodies are fragments of detached cartilage or bone inside the knee joint. These fragments may be free floating (unstable) or may be trapped (stable) within the joint. Depending on the severity, you may have one or more loose bodies in your knee joint. 

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  • MCL TearMCL Tear

    The medial collateral ligament (MCL) is the ligament located on the inner part of the knee joint. It runs from the femur (thighbone) to the top of the tibia (shinbone) and helps in stabilizing the knee.

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  • Meniscal TearsMeniscal Tears

    Meniscal tears are among the commonest injuries to the knee joint. It can occur at any age but are ore common in athlete involved in contact sports. The two wedge-shaped cartilage pieces present between the thighbone and the shinbone are called meniscus. They stabilize the knee joint and act as shock absorbers.

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  • Multiligament InstabilityMultiligament Instability

    Multiligament instability occurs because of a direct blow to the knee, fall from a height or motor vehicle trauma. Multiple ligament knee injuries are common in athletes involved in contact sports such as soccer, football, and basketball.

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  • Patellafemoral Pain SyndromePatellafemoral Pain Syndrome

    Patellofemoral pain is associated with a number of medical conditions such as anterior knee pain syndrome, patellofemoral malalignment, and chondromalacia patella.

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  • Quadriceps Tendon RuptureQuadriceps Tendon Rupture

    The quadriceps can rupture after a fall, direct blow to the leg and when you land on your leg awkwardly from a jump.

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  • Runner’s Knee, Ileotibial Band Friction Syndrome (ITB)Runner's Knee

    Ileotibial Band Friction Syndrome (ITB) also called runner’s knee, refers to pain under and around the outside of the knee. Patella-Femoral pain is associated with a number of medical conditions such as anterior knee pain syndrome, patella- femoral malalignmnet and chondromalacia patella.

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  • Shin SplintsShin Splints

    Shin splints are pain and inflammation of the tendons, muscles and bone tissue along the tibia or shinbone (lower leg).

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  • American Shoulder and Elbow Surgeons
  • American Orthopaedic Society for Sports Medicine
  • American Medical Association | AMA
  • U.S. Naval Hospital
  • Eastern Orthopaedic Association
  • NYS society of orthopaedic surgeons
  • Arthroscopy Association of North America
  • The Castle Connolly
  • Alpha Omega Alpha
  • Patients Choice
  • Arthroscopy Association of North America