Disease A-Z Library

Rx Musculoskeletal Conditions

Browse plain-English disease and condition guides, including symptoms, causes, diagnosis, treatment options, prevention, and when to seek medical care.

126 articlesUpdated medical education library

Diseases A-Z

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Intercalary Polydactyly

Intercalary polydactyly (also called central polydactyly or mesoaxial polydactyly) means a baby is born with an extra finger or toe that appears between the normal digits,...

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Insertional Polydactyly

Insertional polydactyly is a birth difference where a person has an extra finger or toe that sits “in the middle” of the hand or foot, instead...

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Congenital Myopathy 1A

Congenital myopathy 1A is a genetic muscle condition that usually starts at birth or early childhood. “Congenital” means present from birth, and “myopathy” means a muscle...

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Central Core Disease

Central core disease is a rare inherited muscle condition that is usually present from birth. It mainly causes ongoing (often non-worsening) weakness in muscles close to...

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Aneurysm Osteoarthritis Syndrome (AOS)

Aneurysm-osteoarthritis syndrome is a rare, inherited connective-tissue disorder. It mainly causes bulging (aneurysms), stretching (tortuosity), or tearing (dissection) of arteries anywhere in the body, and it...

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Rheumatoid Arthritis Mutilans

Rheumatoid arthritis mutilans is a rare, severe form of long‐standing rheumatoid arthritis characterized by aggressive bone resorption and joint destruction that leads to dramatic deformities and...

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Facet Joint Arthritis

Facet joint arthritis, also called facet arthropathy or zygapophyseal joint osteoarthritis, is a degenerative condition in which the small synovial joints on the back of the...

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Osteoarthritis Contracture

Osteoarthritis contracture is a condition that affects the joints in your body, causing stiffness and limited movement. In this article, we will break down the essential...

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Rheumatoid Arthritis Contracture

Rheumatoid Arthritis (RA) is a chronic autoimmune disease that affects millions of people worldwide. In this article, we will break down the complex aspects of RA...

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Arthritis-Related Contracture

Arthritis-related contracture is a condition that affects people with arthritis, causing stiffness and limited joint movement. In this article, we will break down the key aspects...

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Types of Musculoskeletal Injuries

The musculoskeletal system consists of bones, muscles, tendons, ligaments, and intervertebral discs, as well as their associated nerves and blood vessels, and is powered by the...

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Prepatellar Bursitis

Prepatellar bursitis is a common and treatable condition that causes the front of your knee to swell. It happens when the bursa sac in front of your...

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Olecranon Bursitis

Olecranon bursitis is a condition characterized by swelling, redness, and pain at the tip of the elbow. If the underlying cause is due to an infection, fever...

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Hip Flexor Tendonitis

Hip flexor tendonitis may cause you to have difficulty with normal walking, running, or stair climbing. Sometimes, the simple act of rising from a chair is...

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Infectious Arthritis

Infectious Arthritis is a bacterial, viral, or fungal infection in one or more of your joints. The germ can travel to the joint from another part...

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Glenohumeral Arthritis

Arthritis of the glenohumeral joint is a common cause of debilitating shoulder pain, affecting up to one-third of patients older than 60 years. It is progressive in...

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