Board of Certification for the Athletic Trainer (BOC) Practice Test

Which of the following goniometric measurements of the hip indicate abnormalities?

1. 10 degrees of extension

2. 12 degrees of adduction

3. 38 degrees of internal rotation

4. 47 degrees of abduction

The correct answer is: 10 degrees of extension

When assessing hip range of motion, normative values are established to define what is considered normal function. In this context, normal hip extension is typically around 20 to 30 degrees. Therefore, a measurement of 10 degrees of hip extension falls significantly below this range, indicating a potential abnormality in the hip's ability to extend. Hip extension is crucial for various activities, including walking, running, and climbing stairs. Limited extension can result from several factors, including hip joint pathology, muscle tightness, or anatomical variances. Thus, a value of 10 degrees signifies a potential concern that could warrant further examination or intervention. In contrast, the other measurements provided (12 degrees of adduction, 38 degrees of internal rotation, and 47 degrees of abduction) fall within normative ranges—adduction typically ranges from 15 to 30 degrees, internal rotation from 30 to 40 degrees, and abduction from 40 to 55 degrees—indicating that those measurements do not suggest abnormalities. Understanding these normative ranges is crucial for evaluating the functional capacity of the hip joint.