Synovial joint
(Redirected from Diarthrodial joint)
Synovial joint
A synovial joint, also known as diarthrosis, is the most common and most movable type of joint in the body of a mammal. As with most other joints in the body, synovial joints achieve movement at the point of contact of the articulating bones.
Structure[edit | edit source]
Synovial joints contain a variety of structures which are not seen in fibrous or cartilaginous joints:
- Articular cartilage: This covers the part of the bone in the joint. It absorbs shocks and reduces friction.
- Joint capsule: This seals the joint space and provides stability by limiting movements.
- Synovial membrane: This lines the joint capsule and secretes synovial fluid.
- Synovial fluid: This lubricates the joint, reducing friction and wear.
- Ligaments: These are fibrous tissues that connect bones to other bones.
- Tendons: These connect muscle to bone and provide additional stability.
- Bursae: These are sacs filled with synovial fluid that cushion the joint.
- Meniscus: This is a curve of cartilage that provides additional stability to the joint.
Types of synovial joints[edit | edit source]
There are six types of synovial joints. Some are relatively immobile, but most allow considerable movement:
- Plane joints, such as the acromioclavicular joint, allow gliding movements.
- Hinge joints, such as the elbow, allow flexion and extension.
- Pivot joints, such as the atlantoaxial joint, allow rotation.
- Condyloid joints, such as the wrist, allow all movements except axial rotation.
- Saddle joints, such as the thumb, allow all movements except axial rotation.
- Ball and socket joints, such as the hip, allow all movements.
Clinical significance[edit | edit source]
Diseases of the synovial joints include osteoarthritis, rheumatoid arthritis, gout, and lupus. Injuries to synovial joints can also occur, such as sprains, strains, and dislocations.
See also[edit | edit source]
Synovial joint Resources | |
---|---|
|
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
WikiMD's Wellness Encyclopedia |
Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD