The Medical Knee Hammer (Reflex Hammer) is a diagnostic instrument used by healthcare professionals to test deep tendon reflexes, such as the knee-jerk response. This test is an essential part of neurological examinations to assess the condition of the nervous system. It typically features a rubber head and a sturdy handle, allowing controlled tapping on tendons to observe muscle response. The strength and speed of the reflex help doctors identify possible issues in the central or peripheral nervous system. This tool is widely used in hospitals, clinics, physiotherapy centers, and medical training institutions. It is compact, easy to handle, and an essential part of any diagnostic kit.