BMI stands for “body mass index.” It is a simple number calculated from height and weight. Clinicians use BMI as a screening tool to estimate whether body size may affect health risks. It is commonly recorded in primary care, orthopedics, sports medicine, and preoperative planning.

A Bilateral gluteus medius tear means the gluteus medius tendon is torn on both hips. The gluteus medius is a key “hip abductor” muscle that helps stabilize the pelvis during walking. This term is commonly used in orthopedics, sports medicine, and physical therapy to explain certain patterns of lateral hip pain and limping. It is often discussed alongside greater trochanteric pain syndrome and hip abductor weakness.

Bilateral trochanteric bursitis describes pain and tenderness on the outside of both hips. It involves irritation of tissues near the greater trochanter, a prominent part of the thigh bone (femur). The term is commonly used in orthopedic, sports medicine, and physical therapy settings when lateral hip pain affects both sides. In practice, it often overlaps with a broader diagnosis called greater trochanteric pain syndrome.

Bilateral total hip arthroplasty is a surgery that replaces both hip joints with artificial components. “Bilateral” means both sides, and “total hip arthroplasty” means replacing the ball-and-socket joint. It is commonly used for advanced arthritis or joint damage affecting both hips. It may be done in one operation or in two separate operations, depending on the case.

Bilateral stress fracture femoral neck is a stress-related crack in the femoral neck on both sides. The femoral neck is the short bridge of bone between the femoral head and the upper femur. This diagnosis is commonly used in sports medicine, orthopedics, and emergency or urgent hip pain evaluations. It matters because femoral neck stress injuries can progress if loading continues.

Bilateral snapping hip describes a snapping, clicking, or “popping” sensation felt in both hips. The sound or sensation usually comes from a tendon or soft tissue moving over bone during motion. It is commonly used as a clinical description in orthopedics, sports medicine, and physical therapy. Some people notice snapping without pain, while others have pain or functional limits.

Bilateral SCFE means **slipped capital femoral epiphysis** affecting **both hips**. It is a condition where the **ball of the hip joint (femoral head)** shifts relative to the **upper thigh bone (femoral neck)** through a growth area. It is most commonly discussed in **pediatric and adolescent orthopedics** because it involves an **open growth plate**. Clinicians use the term to describe whether involvement is **simultaneous (both at once)** or **sequential (one after the other)**.

Bilateral Perthes disease is a form of Legg–Calvé–Perthes disease that affects both hips. It involves temporary loss of blood supply to the femoral head (the “ball” of the hip joint) in childhood. Over time, the bone can soften, change shape, and then heal with remodeling. The term is commonly used in pediatric orthopedics, radiology reports, and physical therapy planning.

Bilateral periacetabular osteotomy is a hip-preserving surgery performed on both hips. It reshapes and reorients the hip socket (acetabulum) to improve how it covers the femoral head. It is most commonly used for symptomatic hip dysplasia in adolescents and adults with relatively preserved cartilage. It may be done as two staged operations or, in selected cases, during one surgical setting.

A Bilateral labral tear means there is a tear of the hip labrum in both hips. The hip labrum is a ring of cartilage that lines the rim of the hip socket. This term is commonly used in orthopedic, sports medicine, and physical therapy settings. It helps clinicians describe symptoms, imaging findings, and treatment planning for both sides.