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Anatomy of The Lumbar Back Muscles-Multifidus

The multifidus is the most medial and largest of the paraspinal muscles. It has an origin and insertion of vertebra to vertebra attachments within the lumbar spine and between the lumbar and sacral vertebrae .

The multifidus is composed of repeating fascicles, which originate from the laminae and spinous processes of the lumbar vertebrae and […]

Sacroiliac Dysfunction (Inflammation of the Sacroiliac Joint)

Inflammation of the sacroiliac joints (the joint joining the pelvis and the spine) is not uncommon as an isolated condition among athletes who pursue winter sports. It can also be part of generalized disease, such as Bechterew’s disease. In sports, sudden violent contractions of the hamstrings or abdominal muscles with severe direct load to the […]

Giant Cell Tumor

Basics Description A benign but often locally aggressive neoplasm, characterized by large numbers of uniformly distributed, osteoclastlike giant cells and a background population of plump, epithelioid-to-spindle mononuclear cells. The vast majority of these tumors are located near the articular end of a tubular bone; ~50% occur in the knee. Other frequently involved sites: Distal […]

Aneurysmal Bone Cyst

Basics Description Destructive, painful, lytic bone lesions occurring in young patients May occur primarily in bone (de novo) or develop within another benign bone lesion Can be locally aggressive and can cause a bone to balloon as a result of aneurysmal cystic expansion Occurs most often at the proximal ends of long bones and […]

A Patient’s Guide to Piriformis Syndrome

Introduction

Pain in the buttock that radiates down the leg is commonly called sciatica. The most common cause for sciatica is irritation of the spinal nerves in or near the lumbar spine. Sometimes the nerve irritation is not in the spine but further down the leg. One possible cause of sciatica is piriformis syndrome. Piriformis […]

A Patient’s Guide to Lumbar Spondylolisthesis

Introduction

Normally, the bones of the spine (the vertebrae) stand neatly stacked on top of one another. Ligaments and joints support the spine. Spondylolisthesis alters the alignment of the spine. In this condition, one of the spine bones slips forward over the one below it. As the bone slips forward, the nearby tissues and nerves […]

A Patient’s Guide to Lumbar Spine Anatomy

Introduction

Knowing the main parts of your low back and how these parts work is important as you learn to care for your back problem.

Two common anatomic terms are useful as they relate to the low back. The term anterior refers to the front of the spine. The term posterior refers to the back […]

A Patient’s Guide to Low Back Pain

Introduction

Low back pain is one of the main reasons Americans visit their doctor. For adults over 40, it ranks third as a cause for doctor visits, after heart disease and arthritis.

Eighty percent of people will have low back pain at some point in their lives. And nearly everyone who has low back pain […]

Pain Management: A Patient’s Guide to Sacroiliac Joint Injections

Introduction

Sacroiliac (SI) joint injections are commonly used to determine what is causing back pain. SI joint injections are primarily diagnostic injections, meaning that they help your doctor determine the cause of your back pain but may not provide you with any long-term relief from the pain. These injections eliminate pain temporarily by filling the […]