Author: drhip

Anterior center-edge angle: Definition, Uses, and Clinical Overview

Anterior center-edge angle is a hip imaging measurement that estimates how much the front of the acetabulum (hip socket) covers the femoral head (ball). It is most commonly measured on a specific X-ray view called the false-profile view. Clinicians use it to describe anterior (front) acetabular coverage in conditions like hip dysplasia or femoroacetabular impingement. It is one piece of the overall hip assessment and is interpreted alongside symptoms, exam findings, and other imaging.

Anterior apprehension test hip: Definition, Uses, and Clinical Overview

The Anterior apprehension test hip is a hands-on physical exam maneuver used to assess possible front (anterior) hip instability. It looks for pain, “giving way,” or a feeling that the hip might slip out of place in certain positions. It is commonly used in orthopedic, sports medicine, and physical therapy evaluations of hip pain. It can be part of an exam for people with symptoms after injury, surgery, or in hips with shape or alignment differences.

Anterior acetabular rim: Definition, Uses, and Clinical Overview

The Anterior acetabular rim is the front edge of the hip socket (the acetabulum). It helps form the “cup” that holds the femoral head (the ball of the hip joint). Clinicians talk about it when evaluating hip pain, impingement, instability, and labral injury. It is also a key landmark in hip imaging and in some hip-preserving and hip-replacement procedures.

Ankylosing spondylitis hip involvement: Definition, Uses, and Clinical Overview

Ankylosing spondylitis hip involvement means the hip joint is affected by inflammation related to ankylosing spondylitis. It is used to describe hip pain, stiffness, and reduced motion that come from inflammatory arthritis rather than a simple strain. Clinicians use the term in rheumatology, orthopedics, sports medicine, and physical therapy notes. Patients often encounter it when hip symptoms occur alongside back or sacroiliac (SI) joint issues.

Ankle-brachial index: Definition, Uses, and Clinical Overview

Ankle-brachial index is a simple ratio comparing blood pressure at the ankle to blood pressure in the arm. It is commonly used to screen for reduced blood flow to the legs, often related to peripheral artery disease (PAD). Clinicians use it in vascular medicine, primary care, and perioperative (before-surgery) evaluation. It can also help orthopedic teams understand whether circulation might affect pain, healing, or rehab tolerance.

Anatomic hip: Definition, Uses, and Clinical Overview

Anatomic hip is a term used to describe hip care that aims to match a person’s natural hip anatomy as closely as possible. It is most commonly used when discussing hip replacement implant design and surgical reconstruction goals. It may also be used in imaging-based planning and biomechanics when clinicians describe “restoring native anatomy.” The core idea is “anatomy-matching” shape, position, and movement.

Alpha angle measurement: Definition, Uses, and Clinical Overview

Alpha angle measurement is a way to quantify the shape of the ball part of the hip joint. It is most commonly used to assess for “cam morphology,” a bony bump at the femoral head–neck junction. Clinicians measure it on X-ray, MRI, or CT images of the hip. It helps interpret hip pain and guides discussion of imaging and treatment options.

Alpha angle: Definition, Uses, and Clinical Overview

Alpha angle is a measurement used to describe the shape of the ball part of the hip joint. It helps clinicians assess whether the femoral head (the “ball”) is smoothly rounded where it meets the femoral neck. It is most commonly discussed in evaluations for femoroacetabular impingement (FAI), especially “cam” morphology. Alpha angle is measured on imaging such as X-rays, MRI, or CT.

ALTR: Definition, Uses, and Clinical Overview

ALTR stands for **adverse local tissue reaction**. It describes an abnormal inflammatory response in tissues around a joint implant, most commonly a hip replacement. ALTR is most often discussed in the context of **metal-related debris or corrosion** near an implant. Clinicians use the term when evaluating unexplained hip pain, swelling, or imaging changes around an artificial joint.