The Popliteal Artery is a major blood vessel located behind the knee. It is the continuation of the femoral artery and supplies blood to the lower leg and foot. Clinicians commonly assess it when evaluating leg circulation and peripheral artery disease. It is also a frequent focus in vascular imaging and lower-extremity interventions.

Sacral slope is an angle that describes how the top of the sacrum tilts forward or backward. It is measured on spine or pelvis imaging, most commonly a standing side-view (lateral) X-ray. Clinicians use it to understand posture and “sagittal alignment,” meaning alignment when viewed from the side. It is often discussed in the evaluation of low back pain, spinal deformity, and surgical planning.

The Femoral Artery is a large blood vessel in the upper thigh that carries oxygen-rich blood to the leg. It is a continuation of the external iliac artery after it passes into the groin area. Clinicians commonly assess it for a pulse and use it as an access route for catheter-based heart and vascular procedures. It is also a key artery in peripheral artery disease and acute limb blood-flow problems.

Pelvic tilt is a way to describe the position of the pelvis relative to the spine and hips. It is discussed in posture, back pain, hip problems, and whole-spine alignment. Clinicians use Pelvic tilt in physical exams and, commonly, as a measurement on standing X-rays. It helps describe how the body balances over the pelvis during standing and walking.

The Iliac Artery is a major blood vessel in the pelvis that carries oxygen-rich blood to the pelvis and legs. It begins where the abdominal aorta splits into right and left branches. Clinicians commonly reference it when evaluating leg circulation, pelvic blood flow, and vascular access for catheter-based procedures.

Pelvic incidence is a measured angle that describes how the pelvis is shaped and oriented relative to the sacrum. It is a key part of “spinopelvic alignment,” which is how the spine and pelvis balance in standing posture. Specialists most often use Pelvic incidence when evaluating sagittal balance (side-view alignment) of the spine. It is commonly discussed in scoliosis, adult spinal deformity, and spondylolisthesis evaluations.

Spinopelvic alignment describes how the spine and pelvis are positioned and balanced relative to each other. It is commonly assessed on standing imaging to understand posture, balance, and spinal curvature. Spine specialists use it to evaluate back pain, deformity, and how the body maintains an upright stance. It is also used to plan and assess outcomes of certain spine and hip-related treatments.

Coronal balance describes how centered the spine and trunk are when viewed from the front or back. It is most often assessed on standing full-length spine imaging. Clinicians use it to describe side-to-side alignment in scoliosis and other spinal deformities. It helps communicate whether the head and upper body are aligned over the pelvis.

The Mesenteric Artery refers to the arteries that carry oxygen-rich blood to the intestines. The most commonly discussed vessels are the superior mesenteric artery and inferior mesenteric artery. These arteries matter clinically because reduced flow can injure bowel tissue and cause serious illness. They are commonly evaluated in vascular medicine, interventional care, and abdominal imaging.

Sagittal balance describes how the spine lines up when viewed from the side. It helps explain how the head, spine, pelvis, and legs stack to keep you upright with minimal effort. Clinicians use it in spine exams and standing X-rays to understand posture and alignment. It is commonly discussed in adult spinal deformity, scoliosis/kyphosis evaluation, and surgical planning.