Wrist Muscles

When talking about muscles of the wrist, you are essentially referring to muscles that originate and are mostly located in the forearm. Typically the muscle belly is located in the forearm and a long tendon crosses the wrist joint and attaches to a bone in the hand which allows for the wrist movements. There are 4 movements that the wrist can make: flexion, extension, radial deviation, and ulnar deviation. The forearm/wrist/hand can also rotate in pronation and supination movements.

1. WRIST MUSCLES By- Henan Fatemah Pathan Group 92

2. The wrist is a complex joint that connects the radius and ulna (the 2 bones in the forearm) to the carpals in the hand. The wrist (and hand) allow for the manipulation of objects in space and provide us with the dexterity required for fine motor skills. WHAT IS THE WRIST ?

3. 6 THERE ARE 6 MAIN MUSCLES THAT FLEX THE WRIST.

4. EXTENSOR CARPI ULNARIS EXTENSOR CARPI RADIALIS LONGUS FLEXOR CARPI RADIALIS EXTENSOR CARPI RADIALIS BREVIS PALMARIS LONGUS WRIST MUSCLES FLEXOR CARPI ULNARIS

5. A pair of muscles located on the side of the forearm, allowing them to control extension and abduction of the wrist. Attachments: Both originate from the humerus and attach to the base of the hand. Actions: Extend and abduct the wrist. EXTENSOR CARPI RADIALIS LONGUS

6. EXTENSOR CARPI RADIALIS BREVIS A pair of muscles located on the side of the forearm, allowing them to control extension and abduction of the wrist. Attachments: Both originate from the humerus and attach to the base of the hand. Actions: Extend and abduct the wrist.

7. Located on the other side of the forearm to the extensor carpi radialis longus and brevis, it performs a similar role. Attachments: Originates from the humerus and attaches to the base of the hand. Actions: Extension and adduction of wrist. EXTENSOR CARPI ULNARIS

8. A long muscle originating near the elbow and passing through into the wrist. Attachments: Originates from the humerus and attaches to the base of the digits. Actions: Flexion and abduction at the wrist FLEXOR CARPI RADIALIS

9. A long muscle originating near the elbow and passing through into the wrist. Attachments: Originates from the humerus and ulna and attaches to one of the carpal bones in the wrist. Actions: Flexion and adduction at the wrist. FLEXOR CARPI ULNARIS

10. A long muscle originating near the elbow and passing through into the wrist. Attachments: Originates from the humerus and attaches to the base of the hand. Actions: Flexion at the wrist. PALMARIS LONGUS

11. FUNCTIONS The wrist and hand exhibit a remarkable range of movement, key for grasping, interaction with objects and to provide range of motion necessary to adequately perform daily functions while maintaining a physiologic level of inherent stability. These muscles can generate highly variable force, from the strong grip required when lifting a heavy object to the delicate movements required to write.

12. MOVEMENTS OF THE WRIST ABDUCTION ADDUCTION EXTENSION FLEXION

13. WRIST SPRAINS A sprain-type injury is when a ligament is damaged. Ligaments connect bone to bone and the wrist/palm is a complex structure of small bones connected by ligaments. When a person falls forward when running, playing sports, or simply trips they have a natural tendency to try and reach forward to catch themselves. This outreached arm and extended wrist position can cause tearing of the ligaments of the wrist upon impact. COMMON WRIST INJURIES

14. (2) WRIST FRACTURE The most common fracture injury of the wrist occurs in the same manner as the wrist sprain (outreached arm with extended wrist). This fracture also commonly occurs in motor vehicle accidents. The wrist has 8 small bones, but the scaphoid bone is the one that is frequently the suspect in fractures. Depending on the extent of the damage this injury can appear to be a simple sprain until an x-ray is performed.

15. (3) TENDON INJURIES Tendons connect the muscles to the bone and with the wrist, the tendons are very long and slender which subjects them to injury. Tendonitis (irritation/inflammation of the tendon) occurs with repetitive overuse type injuries. There are two common wrist tendonitis injuries that occur with sports. -De Quervain’s Tenosynovitis occurs with sports that require repetitive gripping and rotations. -Extensor Carpi Ulnaris (ECU) Tendonitis occurs in sports that require twisting and extension of the wrist such as tennis and basketball.

16. TREATMENT * Rest your wrist for at least 48 hours. * Ice your wrist to reduce pain and swelling. * Compress the wrist with a bandage. * Elevate your wrist above your heart, on a pillow or the back of a chair. * Take anti-inflammatory painkillers. * Use a cast or splint to keep your wrist immobile.

17. THANK YOU FOR YOUR TIME!