A 6-month-old infant is being evaluated for developmental dysplasia of the hip (DDH). The nurse is preparing to assist with the Ortolani test. Which nursing action is the MOST important safety consideration during this examination?

The Ortolani test requires gentle handling to avoid injury to the infant's developing hip joint. Other positions or excessive force can cause harm.

Understanding the Ortolani Test and Safety
The Ortolani test is a specific physical examination maneuver used to identify a dislocated but reducible hip in an infant with developmental dysplasia of the hip (DDH). The core of the procedure involves a gentle sequence of hip flexion, abduction, and anteriorly directed lifting. The study by Chow et al. explicitly investigated the forces and maneuvers involved in these neonatal hip tests because they are "often poorly performed," with the goal of defining a "standard of safe practice" ^[1]. The primary safety concern, therefore, is directly related to the technique and force applied by the examiner.

Why Option 2 is the Most Important Safety Consideration
Option 2, "Ensure gentle handling and avoid excessive force during hip manipulation," is correct because the foundational safety standard for the Ortolani test is the controlled and minimal application of force. The research aimed to measure the forces applied during the test to establish a safe standard, implying that excessive or uncontrolled force is a known risk ^[1]. Applying too much pressure can cause pain, microtrauma to the developing femoral head or acetabular labrum, or even iatrogenic injury. The test's diagnostic value relies on feeling the subtle "clunk" of the femoral head relocating over the acetabular rim, a sensation that is completely obscured by forceful handling. Gentle manipulation is not merely a comfort measure; it is the critical element that makes the test both safe and diagnostically accurate.

Analysis of Incorrect Options
- Option 1: Positioning the infant prone is incorrect. The Ortolani maneuver requires the infant to be supine on a firm, flat surface. A prone position makes the necessary hip flexion and abduction sequence impossible to perform and would not allow for assessment of hip reduction.
- Option 3: Applying firm pressure to stabilize the pelvis is a common error. While stabilizing the pelvis is necessary, it must be done with a gentle, steady hold, not firm pressure. The study’s focus on defining safe force parameters directly contradicts the idea of applying "firm pressure," which could transmit excessive force to the contralateral hip or spine and interfere with the subtle feel of the relocation ^[1]. The stabilization hand should simply prevent the pelvis from lifting off the examination surface.
- Option 4: Maintaining the infant supine with legs fully extended is the starting position for assessing limb length discrepancy (Galeazzi sign), not for performing the Ortolani test. The Ortolani test begins with the hips flexed to 90 degrees. Full extension would prevent the examiner from abducting the hip and lifting the greater trochanter, which is the essential mechanism for reducing a dislocated hip.