A Cannulated cancellous screw is an orthopedic screw designed to fix broken or unstable bone. “Cannulated” means it is hollow so it can slide over a guidewire for precise placement. “Cancellous” refers to spongy bone (often near joint ends), where this screw is commonly used. It is frequently used around the hip, including certain femoral neck fractures and other peri‑articular injuries.

Cam morphology imaging is the use of medical imaging to evaluate a specific shape change at the top of the thigh bone (femur) near the hip joint. It helps clinicians see whether the femoral head–neck junction is less round than expected. It is most commonly used when evaluating femoroacetabular impingement (FAI) and related hip pain. It can be performed with X-ray, MRI, and CT, depending on the clinical question.

Cam morphology is a shape difference at the top of the thigh bone (femur) near the hip joint. It describes a less-round contour of the femoral head–neck junction that can affect hip motion. The term is commonly used when evaluating hip pain and femoroacetabular impingement (FAI). It is usually identified on hip imaging such as X-rays, MRI, or CT.

A Cam lesion is an extra bony prominence at the junction of the femoral head and femoral neck. It is commonly discussed in relation to femoroacetabular impingement (FAI), a cause of hip pain and limited motion. The term is used in orthopedics, sports medicine, and physical therapy to describe a hip shape that can pinch the joint. It may be found on imaging even when a person has no symptoms.

Cam impingement is a hip joint shape difference where the femoral head–neck junction is less round than usual. It is commonly discussed as a cause of femoroacetabular impingement (FAI) and hip pain in active people. It can contribute to labral tears and cartilage wear when the hip moves into certain positions. Clinicians use the term to describe imaging findings and to guide evaluation and treatment planning.

Cam deformity is a shape change at the femoral head–neck junction (the “ball” of the hip joint). It creates a bony bump that can reduce the normal roundness of the femoral head. It is commonly discussed in femoroacetabular impingement (FAI), a cause of hip pain and limited motion. Clinicians use the term when evaluating hip symptoms, interpreting imaging, and planning treatment.

Calcar femorale is a thickened ridge of dense bone inside the upper femur (thigh bone) near the hip. It helps support the femoral neck, which is the narrow bridge between the femoral head and the shaft. Clinicians most often discuss it when interpreting hip imaging and planning hip fracture or hip replacement care. It is an anatomic structure, not a device or a standalone treatment.

Bursitis is inflammation or irritation of a bursa, a small fluid-filled sac near a joint. A bursa helps tissues glide smoothly when you move. Bursitis is commonly discussed in orthopedics, sports medicine, and physical therapy when evaluating joint-area pain. It can occur in the hip, shoulder, elbow, knee, heel, and other regions.

Buttock refers to the soft-tissue region on the back of the pelvis, below the waist and above the upper thigh. In everyday use, Buttock describes the rounded area formed mainly by the gluteal muscles and overlying fat. In clinical care, Buttock is a common location for pain descriptions, physical exam findings, and procedural landmarks. It is also an important area for movement, posture, and load transfer between the trunk and legs.

Brooker IV is the most severe grade in the Brooker classification system for heterotopic ossification around the hip. It describes extensive abnormal bone formation that appears to “bridge” the hip joint on X-ray. It is most commonly referenced after hip surgery, especially total hip arthroplasty (hip replacement). Clinicians use it as a shared language to describe severity and guide discussion of functional impact.