La rama dorsal del nervio cubital es un nervio sensorial de la mano. Inerva la superficie dorsal del dedo meñique y la mitad medial del dedo anular y el área dorsal asociada de la mano. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Trayecto La rama dorsal del nervio cubital se origina aproximadamente 5 cm por encima de la articulación de la muñeca. Se dirige hacia la parte posterior, pasando por debajo del músculo flexor cubital del carpo. A continuación, atraviesa la fascia profunda para llegar a la cara dorsal y cubital de la mano. En la mano, la rama dorsal del nervio cubital termina dividiéndose en ramas sensoriales, que inervan la cara dorsal del antebrazo, el meñique y la mitad medial del dedo anular. Adobe Stock, Licensed to TeachMeSeries Ltd Fig. 1: Rama dorsal del nervio cubital Inervación sensorial La rama dorsal del nervio cubital inerva las siguientes zonas: Superficie dorsal del meñique Superficie dorsal de la mitad medial del dedo anular Cara cubital del dorso de la mano By TeachMeSeries Ltd (2026) Fig. 2: Inervación cutánea del nervio cubital Frequent questions What is the dorsal branch of the ulnar nerve? The dorsal branch of the ulnar nerve is a sensory nerve that innervates the dorsal surface of the little finger and the medial half of the ring finger, along with the associated dorsal area of the hand. It plays a crucial role in providing sensory feedback from these regions. What areas does the dorsal branch of the ulnar nerve innervate? This nerve innervates the dorsal surface of the little finger, the medial half of the ring finger, and the ulnar side of the back of the hand. Its sensory distribution is essential for tactile sensation in these areas. Where does the dorsal branch of the ulnar nerve originate? The dorsal branch of the ulnar nerve originates approximately 5 cm above the wrist joint. It follows a posterior path beneath the flexor carpi ulnaris muscle before reaching the dorsal aspect of the hand. How does the dorsal branch of the ulnar nerve reach the hand? After emerging from above the wrist, the dorsal branch passes under the flexor carpi ulnaris muscle and penetrates the deep fascia to access the dorsal side of the hand. This pathway is vital for its sensory function in the hand. What is the clinical significance of the dorsal branch of the ulnar nerve? Understanding the anatomy and function of the dorsal branch of the ulnar nerve is important for diagnosing sensory deficits in the little and ring fingers. Injury to this nerve can lead to loss of sensation in its innervated areas, impacting hand function. Rate This Article