Other specified injury of extensor muscle, fascia or tendon of thumb at wrist or hand level can occur from a variety of causes including direct trauma, repetitive strain or overuse, or chronic illness.
The diagnosis of this injury is made based on a physical examination and imaging studies such as X-rays, MRIs, and/or CT scans.
Other conditions that can present with similar symptoms include carpal tunnel syndrome, trigger thumb, tenosynovitis, and rheumatoid arthritis.
Treatment of this injury will depend on the severity and may include rest, immobilization of the thumb, physical therapy, the use of NSAIDs, and/or surgical intervention.
Prognosis is generally good with proper treatment and management of the injury.