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Medical Author:

Jason C. Eck, DO, MS

Jason C. Eck, DO, MS

Dr. Eck received a Bachelor of Science degree from the Catholic University of America in Biomedical Engineering, followed by a Master of Science degree in Biomedical Engineering from Marquette University. Following this he worked as a research engineer conducting spine biomechanics research. He then attended medical school at University of Health Sciences. He is board eligible in orthopaedic surgery.

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Medical Editor:

William C. Shiel Jr., MD, FACP, FACR

William C. Shiel Jr., MD, FACP, FACR

Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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What is osteomyelitis?

Osteomyelitis is infection in the bone. Osteomyelitis can occur in infants, children, and adults. Different types of bacteria typically affect the different age groups. In children, osteomyelitis most commonly occurs at the ends of the long bones of the arms and legs, affecting the hips, knees, shoulders, and wrists. In adults, it is more common in the bones of the spine (vertebrae) or in the pelvis.

What causes osteomyelitis?

There are several different ways to develop osteomyelitis. The first is for bacteria to travel through the bloodstream (bacteremia) and spread to the bone, causing an infection. This most often occurs when the patient has an infection elsewhere in the body, such as pneumonia or a urinary tract infection, that spreads through the blood to the bone.

An open wound over a bone can lead to osteomyelitis. An open fracture where the bone punctures through the skin is also a potential cause.

A recent surgery or injection around a bone can also expose the bone to bacteria and lead to osteomyelitis.

Patients with conditions or taking medications that weaken their immune system are at a higher risk of developing osteomyelitis. These include patients with cancer, chronic steroid use, sickle cell disease, human immunodeficiency virus (HIV), diabetes, hemodialysis, intravenous drug users, and the elderly.