[Clinical research of popliteal cyst excision combined with debridement of the knee under arthroscopy with local anesthesia].

Objective: To evaluate the clinical effects of popliteal cyst excision combined with debridement of the knee under arthroscopy with local anesthesia.

Methods: From February 2009 to August 2014, 52 patients with popliteal cysts were treated in our hospital, including 34 males and 18 females with an average age of 43.6 years old ranging from 14 to 62 years old; 29 cases were on the right knee and 23 on the left knee. Preoperative diagnosis was performed according to MRI findings and to determine whether other knee disorders were associated with the disease, 52 patients were diagnosed as popliteal cyst before operation; 23 cases of simple meniscus injury or cartilage injury, 18 cases of osteoarthritis, 7 cases of cruciate ligament injury, 2 cases of gouty arthritis, 1 case of rheumatoid arthritis, 1 case of pigmented villonodular arthritis. The preoperative clinical manifestations involved knee swelling in 21 cases, knee joint pain in 16 cases, joint lock in 8 cases, leg weakness in 4 cases, and knee joint snapping in 4 cases. Cyst size was 4.0 cm× 3.3 cm to 6.2 cm× 5.3 cm. According to the Rauschning and Lindgren standards, 1 case was grade I, 9 cases were grade II, 42 cases were class III. The rehabilitation plan should be made according to the patient's specific injuries and intraoperative management. During the postoperative follow-up, the postoperative curative effect was evaluated by the standard grading of Rauschning and Lindgren of popliteal cyst.

Results: All the incisions healed by first intention, and no complications occurred. All the cases were followed up from 25 to 64 months (averaged 39.6 months). For the Rauschning and Lindgren grading, 43 cases were grade 0, 8 cases were grade I, 1 case were grade II.

Conclusions: Local anesthesia under arthroscopy and popliteal cyst removal knee joint cavity debridement is effective, less trauma, quick recovery, short term effect is good. The recurrence rate is also low because of the primary disease of the knee joint is also treated. After the operation, the rehabilitation plan should be made according to the intraoperative treatment and actively trained so as to recover at an early date.