RT Book, Section A1 Parks, Edward (Ted) SR Print(0) ID 1147244172 T1 The Hip T2 Practical Office Orthopedics YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259642869 LK accessphysiotherapy.mhmedical.com/content.aspx?aid=1147244172 RD 2024/10/06 AB The differential diagnosis for a patient presenting in an outpatient clinic with hip pain is relatively narrow. It’s been said that when you hear hoofbeats, think horses, not zebras. In other words, those hoofbeats you’re hearing are more likely to be coming from common things (horses) than uncommon things (zebras). That makes good sense and is practical, but just to be safe, we will cover both the “horses” and the “zebras” in this chapter. The horses (common conditions) are hip arthritis, greater trochanteric bursitis, and hip pain that is actually pain radiating down from the lumbar spine. These three hip conditions account for over 90% of the hip pain you are likely to encounter in an outpatient setting. The occasional patient with avascular necrosis (AVN) or a form of femoral-acetabular impingement (FAI), make up the other 10%—these are the zebras.