Answer :
A, C. The primary clinical manifestations of scoliosis in a teenager assessed by bending forward include asymmetrical shoulder heights and a lateral curvature of the spine.
Signs are indicative of the abnormal spine curvature observed in scoliosis. Such tests help in diagnosing and evaluating the severity of scoliosis. When a teenager with scoliosis bends forward, it is common to observe asymmetry in shoulder heights due to the abnormal lateral curvature of the spine.
Curvature can force one scapula (shoulder blade) up, creating a visible hump. Test helps in diagnosing scoliosis and assessing its severity, as the right and left sides of the back may not be level with each other in the bent position. Option a,c is correct.