Spinal Stenosis means abnormal narrowing of spaces in the spine where neural tissue travels. Spinal Stenosis is a medical condition with musculoskeletal and neurologic consequences. It is commonly discussed in orthopedic surgery, spine care, neurology, primary care, and rehabilitation settings. It is most often evaluated in patients with posture- or activity-related back/neck pain and neurologic symptoms.

Slipped Disc is a common, nontechnical term for an intervertebral disc herniation in the spine. It is best understood as a **clinical concept/condition** rather than a single, precise diagnosis. In practice, it is used to describe disc-related back or neck pain and sometimes arm or leg symptoms from nerve irritation. Clinicians often replace the term with more specific language such as **disc bulge**, **disc protrusion**, or **disc extrusion**.

Disc Herniation is a condition where disc material extends beyond the normal boundary of an intervertebral disc. In plain terms, part of the spinal “cushion” shifts out of place and can irritate nearby nerves. It is a clinical diagnosis supported by history, physical examination, and—when needed—imaging. It is commonly discussed in spine, sports medicine, neurology, and rehabilitation settings when evaluating neck or back pain with radiating symptoms.

Spondylolisthesis is a spinal condition where one vertebra translates (slips) relative to the vertebra below it. It is most often discussed in the lumbar spine and can be associated with back pain, leg symptoms, or no symptoms at all. It is a clinical and radiographic concept used in orthopedics, spine surgery, sports medicine, and rehabilitation. In practice, it helps clinicians communicate spinal alignment, stability, and potential nerve compression.

Spondylosis is a term for age- and load-related degenerative changes of the spine. It is a **condition/concept** used to describe structural “wear-and-tear” findings in vertebrae, discs, and facet joints. It is commonly used in clinical documentation and imaging reports for the cervical, thoracic, and lumbar spine. It can be present with or without symptoms, so clinical correlation is essential.

Lordosis describes the normal inward curvature of the spine, most notably in the cervical and lumbar regions. It is an anatomy and clinical concept used to describe spinal alignment and posture. In practice, clinicians reference Lordosis during physical examination, radiology reporting, and spine-related rehabilitation planning. Abnormal Lordosis can be discussed when the curve is excessive, reduced, or associated with symptoms or structural disease.

Kyphosis describes the natural outward curvature of the spine, most notably in the thoracic region. In clinical use, Kyphosis is a concept and a condition term when the curvature is excessive or abnormal. It is commonly discussed in orthopedic spine care, pediatrics, rehabilitation, and radiology. Clinicians use it to describe sagittal alignment and to frame evaluation and management of spinal deformity.

Scoliosis is a three-dimensional deformity of the spine characterized by a lateral curvature with vertebral rotation. Scoliosis is a medical condition, not a single disease, and it can have multiple causes. It is commonly discussed in orthopedics, pediatrics, spine surgery, physical medicine and rehabilitation, and primary care. In practice, it is used as a framework for describing spinal alignment, estimating progression risk, and guiding monitoring or treatment.

Radiculopathy is a condition caused by irritation or dysfunction of a spinal nerve root. It commonly presents with pain, numbness, tingling, and/or weakness in a limb. It is a clinical concept used in orthopedics, spine care, neurology, and rehabilitation medicine. In practice, it helps clinicians localize symptoms to a specific nerve root level and guide evaluation.

Sciatica is a clinical term for pain and related symptoms that follow the distribution of the sciatic nerve or its lumbosacral nerve roots. Sciatica is a condition concept used to describe a pattern of symptoms rather than a single diagnosis. Sciatica is commonly discussed in primary care, emergency settings, rehabilitation, neurology, and orthopedic and spine clinics. Sciatica usually reflects irritation or compression of a lumbosacral nerve root, often from spine-related pathology.