Lateral Knee Pain: Causes and Implications for Your Health - Orthopedics

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Sometimes there is pain in the outer bone of the left foot?


Hello, doctor.
I started noticing a popping sound in my joints while walking about two years ago, and it's even more pronounced when going up stairs.
I can also feel it if I place my hand on the area.
Initially, I didn't feel much discomfort, but recently I've experienced mild pain at times, although it's not severe.
The pain is located on the outer upper side of my left knee, near the hip bone.
Could you please explain what might be causing this? What are the potential implications? What is the specific location of that bone? Also, I've been experiencing frequent soreness in my hip lately; could this be related? Thank you, doctor.

Xiao Luo, 10~19 year old female. Ask Date: 2010/09/01

Dr. Zhou Lizhi reply Orthopedics


Dear netizens: (1) On the lateral side of the left knee, the upper end is the distal end of the femur (thigh bone), and the lower end is the proximal end of the fibula.
The joint is located in between, and the structure connecting them is the lateral collateral ligament.
Sometimes, when the ligament becomes inflamed or thickened, there may be a sound while walking (especially when the knee is flexed).
If there is pain, outpatient treatment is necessary.
(2) There are also ligaments in the hip, which can cause sounds and soreness.
However, it is important to differentiate this from sciatica, which can cause pain radiating down to the calf.

Reply Date: 2010/09/01

More Info


Lateral knee pain can arise from various causes, and understanding these can help you manage your symptoms and prevent further complications. Based on your description, it seems you are experiencing discomfort on the outer side of your left knee, particularly near the upper part close to the hip. This pain, along with the audible sounds when walking or climbing stairs, could indicate a few potential issues.

One common cause of lateral knee pain is Iliotibial Band (IT Band) Syndrome. The IT band is a thick band of tissue that runs along the outside of the thigh from the hip to the knee. When this band becomes tight or inflamed, it can cause pain on the outer side of the knee, especially during activities like running or climbing stairs. The fact that you hear popping or cracking sounds may suggest that the IT band is rubbing against the knee joint, which is a typical symptom of this condition.

Another possibility is a lateral collateral ligament (LCL) injury. The LCL is a ligament located on the outer side of the knee that helps stabilize the joint. If you have experienced any trauma or unusual stress to the knee, this could lead to an LCL sprain or strain, resulting in pain and instability.

Additionally, your symptoms could be related to patellofemoral pain syndrome, which is characterized by pain around the kneecap and can be exacerbated by activities that put stress on the knee joint. This condition is often seen in individuals who engage in repetitive activities or have muscle imbalances.

The sounds you hear when moving your knee could also be related to cartilage wear or degeneration, which can occur with age or due to overuse. This is often referred to as crepitus and can be associated with conditions like osteoarthritis.

Regarding your question about the hip pain, it is indeed possible that the discomfort in your hip is related to your knee issues. The hip and knee joints are interconnected, and problems in one area can often lead to pain or discomfort in the other. For instance, if you have an imbalance in your hip muscles or tightness in the hip flexors, it can affect your knee alignment and function, leading to pain.

To address your symptoms, it is essential to consult with a healthcare professional who can perform a thorough examination and possibly recommend imaging studies like X-rays or MRI to determine the exact cause of your pain. Treatment options may include physical therapy to strengthen the muscles around the knee and hip, improve flexibility, and correct any biomechanical issues. Additionally, rest, ice, and anti-inflammatory medications can help manage pain and swelling.

In summary, lateral knee pain can stem from various causes, including IT band syndrome, LCL injuries, patellofemoral pain syndrome, or cartilage degeneration. The connection between your knee and hip pain highlights the importance of a comprehensive approach to treatment. Seeking professional medical advice will help you understand the underlying issues and develop an effective management plan to alleviate your symptoms and improve your overall joint health.

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