What is Annulus fibrosus? What is the role it plays in our body, it’s importance, health issues associated with it? Lets get to know about theses details.
Annulus fibrosus is defined as a ring of fibrous tissue. It is the tough circular exterior of the inter-vertebral disc. Annulus fibrosus is composed of a gelatinous material that protects from herniating or leaking out of the disc by hydraulically sealing the nucleus and evenly distributing any pressure and force imposed on the inter-vertebral disc.
Annulus fibrosus refers to:
- Fibrous ring of heart (Cordis)
- Fibrous ring of inter-vertebral disc (Intervertebralis)
- Annulus surrounding the tympanic membrane (Annulus fibrosus tympani)
The annulus fibrosus is the outer layer of disc that surrounds the gel -like nucleus pulposus (is the inner core of vertebral disc) inside the disc. It is structurally made up of collagen fibers together woven in strong layers in different angles. The spinal discs get their structure by annulus fibrosus, which enables the surrounding vertebrae for easy bending and twisting actions.
The elastic inner structure allows the vertebral disc to withstand forces of compression and tortion. Due to age, the spinal discs dehydrate and become stiffer causing the discs to be less able to bear the compression. The nucleus pulposus can herniate through the protective layer of annulus fibrosus, leaks out of the disc space and leads to the inflammation of nerve roots next to the disc.
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Dr. Kaleem Mohammed graduated as a Bachelor of Physiotherapy in 2014 from Deccan College of Physiotherapy, affiliated to Dr. N.T.R. University of Health Sciences, Vijayawada, India. Dr. Kaleem is an expert at handling physiotherapy needs of patients suffering from orthopedic and spinal conditions and post-surgery rehabilitation. Dr. Kaleem is associated with HealthClues since its inception where he facilitates diagnosis and advanced consultation with senior doctors. He is also a medical researcher and prolific writer who loves sharing insightful commentaries and useful tips to educate the patient community about fitness, treatment options, and post-treatment recovery.