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

Which of the following measurements indicates an abnormal degree of hip internal rotation?

1. 38 degrees of internal rotation

2. 12 degrees of adduction

3. 10 degrees of extension

4. 47 degrees of abduction

The correct answer is: 38 degrees of internal rotation

The measurement of hip internal rotation can provide important insights into a person’s hip joint function and mobility. In clinical practice, normal hip internal rotation is commonly considered to be around 30 to 45 degrees. A measurement of 38 degrees, while close to the typical range, does not indicate an abnormal degree. In contrast, a measurement that falls below the lower threshold of 30 degrees can be indicative of limited internal rotation, which could suggest underlying pathology such as capsular restrictions, femoroacetabular impingement, or other hip joint issues. It is essential to evaluate hip internal rotation in conjunction with other hip ranges of motion, but a reading of 38 degrees alone does not suggest an abnormality. Therefore, monitoring the hip's internal rotation, specifically identifying values that significantly deviate from the norm, is crucial for assessing the overall health and functioning of the hip joint.