Medical Media Images

Wednesday, May 14, 2014

What is the Knee Joint? Shown and Explained with Color X-Ray Images!

The Knee Joint is the largest Joint in the Human Body. It is a complex Hinge Joint which has to support our body weight and yet provide significant mobility. The Knee Joint is made up between three separate Bones, the Femur (thigh bone), the Tibia (larger of the tow lower leg bones) and the Patella (kneecap). Cartilage covers the ends of these Bones where they communicate with each other.

The Knee Joint is surrounded by Capsule which keeps the Joint Fluid (synovial fluid) inside the Joint for lubrication. Multiple Ligaments surround the Joint to give it stability and guide its motion. The Anterior and Posterior Cruciate Ligament (ACL, PCL) prevent too much motion between the Femur and the Tibia. The Medial and Lateral Collateral Ligaments (MCL, LCL) provide stability on the sides of the Knee Joint (lateral).

The Meniscus is a thin "shock-absorber" between the Femur and the Tibia. It also adds more stability and guides the motion of the Knee Joint.

X-Rays were invented by Carl Roentgen in Wuerzburg, Germany in 1895. Since that time, X-Rays have shown the Human Body in Black and White. While this does not diminish their value for medical purposes, its value as a teaching tool to the public is limited. It is often difficult to see details and understand the information provided by X-Rays due to a lack of Color and Contrast between structures.

Medical Media Images has created a method which brings X-Rays to life with Color. This process shows details of the Human Anatomy in ways never seen before. Viewers of any background can now clearly see and understand X-Ray Images.

Below we will introduce the Human Knee as shown on Color X-Rays.

The first Image is a Color X-Ray of Normal Knee Joints. Notice the large amount of space between the Thigh Bone (Femur) and the larger of the two bones of the lower leg (Tibia). The space between the two bones is taken up by Cartilage and the Meniscus which cannot be seen on an X-Ray.

AP Color Knee X-Ray Image showing Normal Knee Anatomy
Color X-Ray Image of Normal Knee Joints
The next Image is a Color X-Ray of the Knee Joints which shows a narrowing of the Joints due to loss of Cartilage as shown by the red arrows. This is Arthritis of the Knee Joints.
AP Knee X-Ray showing Degenerative Joint Disease of the Knee
Color X-ray of Degenerated Knee Joints
The next Image shows a Color X-Ray of a severely degenerated Knee Joint. Compare this Knee Joint to the Normal Joints shown above. This Knee X-Ray shows a complete lack of Knee Cartilage on one side (medial compartment) of the Knee Joint. This is referred to as "bone on bone", and is the most common reason for a Knee Replacement.

AP Color Knee X-Ray Image of severe Degenerative Joint Disease
Color X-Ray of severe Knee Joint Degeneration
The Image below shows a Knee Replacement. Notice the two parts of the Knee Replacement, an upper "cap" over the end of the Femur and a lower "platform" on the Tibia. A synthetic "meniscus"
separates the two. 
Color AP Knee X-Ray showing a unilateral Knee Replacement
Color X-Ray of a Knee Replacement
The next Image is a Color X-Ray of the Knee Joints which shows "Osgood Schlatter Disease". In this disease extra bone is formed on the front of the Tibia below the Knee Joint (red).
Lateral Color Knee X-Ray Image showing Osgood Schlatter Disease
Color X-Ray of Osgood Schlatter Disease
This Image is a Color X-Ray of a Knee Joint suffering from severe Bone Spurring due to a condition called "Chondrocalcinosis". Notice all the extra bone formation at the back of the Femur, Tibia and Patella (kneecap).
Lateral Color Knee X-Ray Image showing Chondrocalcinosis
Color X-Ray of Chondrocalcinosis of the Knee Joint
We hope you enjoyed seeing the Knee Joint on Color X-Rays. Here are some other related topics from recent MMI Blogs:
To learn more about how Medical Media Images creates Color X-Ray and Color MRI Images, here is a Video:
Color X-Ray Image like the ones shown in this Blog are available for Licensing at
The above content, including text and images are Copyright Medical Media Images.

General Disclaimer

Medical Media Images does NOT dispense medical or legal advice. Our images, text and any content cannot be used for diagnosis or treatment of a medical condition. All Images and content are for information purposes only. You must consult with your physician if you need medical advice. Medical Media Images is not a substitute for medical advice.

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