The theoretical rationale of synovectomy is to reduce or eliminate the aggressive inflammatory cell mass, thereby reducing swelling, decreasing pain, and improving joint function. Traditionally, open-wrist synovectomy is the standard treatment, as it allows an inspection of all compartments and extensor tendons. Arthroscopic synovectomy of the wrist was first introduced by Roth and Poehling in 1990. Since then, it has been successfully performed in selected patients. Arthroscopic synovectomy might be indicated in any disease that leads to long-standing synovitis of the wrist and when other treatment modalities do not provide satisfactory symptom reduction or may be contraindicated. Arthroscopic synovectomy is a surgical procedure with minimal morbidity. It results in less damage to the joint capsule and ligaments, thereby hastening rehabilitation and shortening the hospital stay. Therefore, we think that understanding the surgical technique for wrist arthroscopic synovectomy and appropriately applying it to patients could prevent disease progression in patients with wrist arthritis and overcome incapacitating dysfunction of the upper limb, including the wrist, hand, and forearm.