Fibro-osseous Junction

Ross Hauser, MDRoss Hauser, MD

The greatest stresses to the ligaments and tendons are where they attach to the bone, the fibro-osseous junction. The most sensitive structures that produce pain are the periosteum (covering of the bone) and the ligaments. It is important to note that in the scale of pain sensitivity (which part of the body hurts more when injured), the periosteum ranks first, followed by ligaments, tendons, fascia (the connective tissue that surrounds muscle), and finally muscle.

The blood supply to the ligaments is the worst at the point where the ligament attaches to the bone, called the fibro-osseous junction.

Ligament and tendon relaxation occurs when the fibro-osseous junction to bone do not regain their normal tensile strength after sprain and lacerations, and when the attachments are weakened by decalcification from disease, menopause and aging.

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