Final answer:
The two tests performed to diagnose DDH are the Ortolani test and the Barlow test. These tests are used to assess the stability and range of motion of the hip joint in infants.
Step-by-step explanation:
Developmental Dysplasia of the Hip (DDH) can be diagnosed through two tests: the Ortolani test and the Barlow test. These tests are performed on infants to assess the stability and range of motion of the hip joint.
The Ortolani test is used to detect the presence of a dislocated hip. The examiner gently tries to relocate the hip by lifting the baby's thigh and listening/feeling for a 'click.'
The Barlow test evaluates the hip's propensity to dislocate. The examiner applies gentle pressure to the baby's thigh and brings the hip into a slightly extended position. If the hip feels unstable or dislocates, it suggests a positive result.