Which tendon reflex is the most frequently demonstrated in newborns?

The patellar reflex is commonly assessed in newborns as it provides valuable information about the integrity of the spinal cord and neurological function. This reflex, also known as the knee-jerk reflex, occurs when the patellar tendon is tapped, leading to a contraction of the quadriceps muscle and resulting in an extension of the knee. It is frequently examined shortly after birth because it is a straightforward indication of nerve function in the lumbar region of the spinal column.

In contrast, while the biceps reflex, triceps reflex, and plantar reflex are also important for assessing neurological development, they are less frequently demonstrated or assessed as a first-line reflex in the initial evaluation of newborns. Each of these reflexes serves a purpose but may not be as routinely observed during the newborn examination compared to the patellar reflex. The simplicity and visibility of the patellar reflex make it a preferred choice during routine assessments, highlighting its significance in neonatal care.