Grades of Wrist Sprain
- Grade 1 (Mild): The ligament is stretched but not torn.
- Grade 2 (Moderate): The ligament is partially torn.
- Grade 3 (Severe): The ligament is completely torn or detached from its bone attachment.
Causes of a Wrist Sprain
Wrist sprains are most commonly caused by falling onto an outstretched hand. While this can happen during daily activities, it is frequently associated with sports or outdoor recreation.
Symptoms of a Wrist Sprain
- Pain in the wrist
- Increased pain during wrist flexion and extension
- Swelling of the joint
- Bruising around the wrist
- Warmth in the affected area
- Restricted wrist mobility
Scapholunate Ligament (SL)
Injury to the scapholunate ligament often occurs from a fall onto an outstretched hand with the wrist extended and ulnarly deviated. This results in swelling and pain along the dorsum of the wrist. Tenderness is most pronounced between the scaphoid and lunate bones. Diagnosis relies primarily on clinical evaluation, supported by imaging such as ultrasound (USG) and MRI. During the Watson’s test, pain intensifies, and a "clunk" may be heard. In cases of ligament rupture, widening of the radiologic gap between the bones and dorsal instability can be observed. This damage is visible on an X-ray taken with a clenched fist. MRI and ultrasound often reveal complete ligament tears.
Surgical Treatment: This involves arthroscopy, during which the ligament is sutured or reconstructed. For chronic injuries, ligament reconstruction becomes necessary.
Lunotriquetral Ligament (LT)
Injury to the lunotriquetral ligament often occurs from a fall onto an outstretched hand with the wrist extended and radially deviated. Symptoms include pain on the ulnar side of the wrist and weakness in the limb. Tenderness is most pronounced between the lunate and triquetrum bones. Diagnosis in most cases is based on clinical examination. Imaging techniques such as X-ray, ultrasound, and MRI do not always confirm the injury.
Treatment:
In cases without complete ligament rupture, conservative treatment is attempted. The wrist is immobilized, and the patient can resume physical activity after a few weeks.
Surgical intervention is considered if conservative treatment fails. Return to sports is possible a few months after the procedure.
Post-Injury Management of a Wrist Sprain
Managing a wrist sprain requires prompt action, including:
- Cooling the wrist
- Immobilizing it with a bandage
- Using a wrist brace
- Failure to immobilize the wrist immediately increases the risk of developing chronic post-traumatic inflammation.
Preventing Wrist Sprains
Wrist sprains are usually the result of falls, so extra caution is needed when walking on wet or slippery surfaces. Sprains also occur during sports such as skating, skateboarding, and skiing. Wearing wrist guards during these activities can help support the wrist and prevent hyperextension during a fall.
Related Articles:
Explore other potential injuries to the hand and wrist.
Bibliography:
- National Library of Sports Medicine - Wrist Sprain - Douglas D. May Jr; Matthew Varacallo. 2022
- Healthline - Everything You Need to Know About Treating a Sprained Wrist - Medically reviewed by Angela M. Bell, MD, FACP — By Kirsten Nunez on November 25, 2020
- Sports-Healt - What Is a Wrist Sprain? - Duretti Fufa, MD - 2019
- Beware the sprained wrist. The incidence and diagnosis of scapholunate instability - The Journal of Bone and Joint Surgery. British volumeVol. 70-B, No. 2 - WA Jones