Quadratus femoris impingement is a hip pain condition involving irritation of a deep hip muscle called the quadratus femoris. It usually happens when the space between parts of the pelvis and the upper thigh bone becomes too narrow. This narrowing can compress the quadratus femoris muscle and nearby soft tissues during certain movements. The term is commonly used in orthopedics, sports medicine, and radiology when discussing posterior hip or deep buttock pain.

Quadratus femoris edema means swelling-like fluid signal seen in the quadratus femoris muscle, most often on MRI. It is a radiology term that describes a finding, not a standalone diagnosis. It is commonly discussed when evaluating deep buttock pain, posterior hip pain, or groin pain. Clinicians use it to help narrow the cause of hip-related symptoms and guide the next steps in assessment.

Quadratus femoris is a small, deep muscle in the back of the hip. It helps rotate the thigh outward and stabilize the hip joint. It is commonly discussed when evaluating posterior hip pain and deep gluteal conditions.

Quadrate tubercle is a small bony prominence on the upper femur (thigh bone) near the hip. It sits on the posterior (back) side of the femur along the intertrochanteric region. It is best known as an attachment site for the quadratus femoris muscle. Clinicians most often reference it in anatomy, imaging interpretation, and hip-related surgery planning.

Purkinje fibers (not applicable) are specialized electrical conduction fibers in the heart. They help the heart’s ventricles contract in a coordinated, efficient pattern. They are most commonly discussed in cardiology, ECG interpretation, and arrhythmia care. They are not an orthopedic structure, but they can matter in surgical planning and overall medical clearance.

Pulsus paradoxus (not applicable) is a clinical sign where the pulse becomes noticeably weaker during breathing in. More precisely, it describes an exaggerated drop in systolic blood pressure during inspiration. It is most commonly discussed in emergency medicine, cardiology, pulmonary care, and perioperative monitoring. Although not a hip-specific concept, orthopedic teams may encounter it during trauma care or surgery.

Pulmonary embolism after hip surgery is a blood clot that travels to the lungs after a hip operation. It can partially or completely block blood flow in the lung arteries. Clinicians use this term when evaluating new shortness of breath, chest symptoms, or low oxygen after hip procedures. It is most often discussed in hospital and early recovery settings because surgery can temporarily increase clot risk.

Pubis is the front portion of the pelvic bone. It helps form the pelvic ring and supports load transfer during standing and walking. Clinicians commonly mention Pubis when discussing groin pain, pelvic fractures, or the pubic symphysis. It is also used as an anatomical landmark in imaging and physical examination.

The Pubofemoral ligament is a strong band of connective tissue in the hip joint capsule. It helps stabilize the hip by limiting certain movements, especially when the hip opens outward. It sits at the front-lower (anterior-inferior) part of the hip joint, near the pubic bone. Clinicians most often discuss it in hip exams, imaging interpretation, and surgical planning for hip stability.

Pubic symphysis is the front joint of the pelvis where the left and right pubic bones meet. It is a strong, slightly movable connection made of cartilage and ligaments. Clinicians discuss Pubic symphysis in pelvic pain, groin pain, sports injuries, pregnancy-related symptoms, and pelvic fractures. It is also a key landmark in orthopedic imaging and pelvic ring stability.