Nothing is more important than protecting our most vulnerable population during this period of uncertainty. Learn more about how 911 Pain Management is keeping clients safe amid the COVID-19 pandemic.

911 Pain Management: More Life, Less Pain.

Our facility is free from unnecessary wait times and we provide the best experience for our patients. This is made possible by our incredible staff and our nationally renowned pain management specialist, Dr. Liu MD, who has over 30 years of scientific research and clinical experience in her profession.

Our number one priority is patient safety and positive treatment outcomes. We provide treatments free of anxiety with a short-term sedation so you can go home with the least possible discomfort.

By cobaltmoe | June 22nd, 2021 |

The Basic Anatomy of Our Knees

The knee is one of the most complex joints in the body and is primarily composed of bones, ligaments, and cartilage. These components are interspersed with bursae or fluid-filled sacs that help smooth the movement of the knee. An overview of the other basic parts of the knee can be found below.


  • Femur (thigh bone)
  • Tibia (shin bone)
  • Fibula (beside the tibia)
  • Patella (knee cap)


  • Anterior cruciate (prevents femur from sliding backward)
  • Posterior cruciate (prevents femur from sliding forward)
  • Medial and lateral collateral (prevent the femur from sliding from side to side)


  • Medial menisci (cushion between the femur and tibia)
  • Lateral menisci (additional cushion between the femur and tibia)

Common Underlying Causes of Knee Pain

The causes of knee pain can be divided into three broad categories:

  • Acute injuries
  • Medical conditions
  • Overuse injuries

Acute injuries are sudden injuries resulting from physical activity, but they also occur most commonly from personal injury accidents like car accidents. Medical conditions associated with knee pain can develop in both children and the elderly and cause a variety of symptoms. Overuse injuries, finally, can cause knee pain to arise suddenly or develop over time.

Below, you can find examples of the sorts of injuries and conditions that can lead to knee pain.

I. Acute Injuries

  • Broken bones — including the femur, tibia, and patella, otherwise known as the thigh bone, shin bone, and kneecap, respectively.
  • Torn ligaments — a tear in the tissue connecting muscle to bone.
  • Cartilage tear — a rip in the cartilage of the knee that can become stuck in the joint.
  • Dislocated kneecap — the kneecap slides out of position, leading to pain and swelling.

II. Medical Conditions

  • Anterior Cruciate Ligament (ACL) – The most common knee injury that occurs in a car accident. It is one of four ligaments that keep rotational stability and cushions the upper and lower leg from impacting one another.
  • Posterior Cruciate Ligament (PCL) – This ligament is behind the knee, and it keeps the tibia from moving too far backward.
  • Medial Collateral Ligament (MCL) – Tears that occur between the femur and tibia. This commonly occurs in car accidents where the knee impacts the dashboard.
  • Infections — infection of the joint caused by the spread of germs from elsewhere in the body or a puncture wound such as a dog bite.

III. Overuse Injuries

  • IT band syndrome — inflammation of the band of tissue running from your hip to knee, common amongst runners.
  • Patellar syndromes — pain of and around the knee during physical activity.
  • Tendinitis — inflammation of the tendons, the tissue connecting your muscles and bones, caused by excessive and repetitive exercise.
  • Bursitis — overuse leads to irritation of the sac of fluid that prevents joint friction on the top of the knee.

Top Causes of Acute Knee Injuries

A person’s lifestyle can certainly put them at risk of a knee injury, but some types of knee injuries are unforeseeable and thus unavoidable. Below, you can find some of the types of accidents that are most likely to result in a knee injury:

  • Car accidents
  • Slip and falls
  • Violent assaults
  • Athletic accident
  • Workplace accidents
  • Dog bites

Unfortunately, knee injuries are common in most types of personal injury accidents–many of which are listed above.

It is important to receive initial treatment for your injury at a local hospital first for any knee pain you may be suffering from. After that, looking for a pain management clinic should be your next step to help you cope with any residual knee pain.

Reliable Pain Management Doctors Relieving Knee Pain

Knee pain can affect every facet of a person’s life, from their ability to walk to simply being able to sleep soundly. If you’re struggling with knee pain following an injury, specialists at 911 Pain Management can work with you to discover the cause of your suffering and create a minimally invasive pain treatment, non-narcotic method to manage that pain. From trigger point injections to medication management, our experienced staff of pain management doctors can help determine the treatment you need to find relief.

More Life, Less Pain. At 911 Pain Management, Treating Our Patients’ Source of Pain is Our Expertise.

Schedule a Consultation

Sources Of Acute Pain


Desk jobs and car accidents can be significant causes for arm pain, especially in conditions like carpal tunnel syndrome. It can continue if you don’t seek out adequate pain management from an experienced pain management doctor. Learn more about your treatment options now.

Learn More


Neck pain shouldn’t stop you from doing what you need to do during the day, especially when plenty of options to relieve pain are available at 911 Pain Management. Seize the day and learn more about potential causes for your neck pain and how we can help it heal.

Learn More


Are you experiencing pain in your shoulders? Plenty of reasons for shoulder pain exist, from a torn rotator cuff to joint pain and more. Don’t grin and bear the pain alone. Learn more about shoulder pain and how we can help you feel better today.

Learn More


You don’t have to be an athlete to suffer from leg pain. Muscle strains, broken bones, and joint pain can affect anyone, particularly those that have been in a traumatic car accident. Don’t suffer in silence. Get the fast pain management treatment you need.

Learn More

Lower Back

No matter if you hit the gym, work in an environment that requires heavy lifting, or are just feeling the effects of aging, lower back pain and stiffness can demobilize you if you aren’t careful. 911 Pain Management helps patients overcome lower back pain with solid pain management solutions.

Learn More

the patient Journey

About Dr Liu

Yixiang Liu MD has strived to become the nationally renowned pain management doctor she is today. She has never settled for less when it comes to healing others, and her medical training, education, and experience ensure that you get the best in pain management available to you.

Read Dr. Yixiang Liu's Bio