STUDY ON THE RISK FACTORS OF PAIN PERSISTENCE IN PATIENTS WITH MENISCUS INJURY OF KNEE JOINT FOR 6 MONTHS AFTER ARTHROSCOPIC SURGERY

Chenpo Dang^{1, #}, Guirong Yi^{2, #}, Lingwa Shao^{3, #}, Guilin Peng³, Peng Zhou¹, Baopeng Li¹, Hongbin Shao¹, Xiaojie Yang¹, Feiyi Hou¹, Qinxu Yang¹, Shensong Li^{1, *}

¹Department of Orthopedics (Sport Medicine), The 940th Hospital of Joint Logistics Support force of Chinese People's Liberation Army, Lanzhou, 730050, Gansu, People’s Republic of China - ²Department of Gastroenterology, The Second Affiliated Hospital of Lanzhou University, Lanzhou, 730050, Gansu, People’s Republic of China - ³Department of Orthopedics, The 944th Hospital of Joint Logistics Support force of Chinese People's Liberation Army, Jiuquan, 735000, Gansu, People’s Republic of China

Objective: To explore the risk factors for persistent pain in patients with meniscus injury of knee joint 6 months after arthroscopic surgery.

Methods: Clinical data of 320 cases of knee meniscus injury underwent arthroscopic surgery in our hospital from January 2016 to June 2020 were analyzed retrospectively, of which 48 cases suffered from persistent pain for 6 months after arthroscopic surgery. The clinical characteristics and curative effect data were analyzed. Logistic regression model was used to evaluate the risk factors of 6 month- postoperative persistent pain. 

Results: The excellent and good rate of 320 patients was 91.25%. The age, joint cartilage injury ratio, weight bearing ratio within 7 days after operation and synovial membrane resection ratio in the persistent pain group were significantly higher than those in the non-persistent pain group (P<0.05). The proportion of cold compress in operation area after operation in persistent pain group was sig-nificantly less than that in non-persistent pain group (P<0.05). Multivariate analysis of Logistic regression model showed that age ≥65 years old, joint cartilage injury, weight bearing within 7 days after operation, cold compress in the operation area after operation and synovial membrane removal during operation were all independent risk factors for 6 month- postoperative persistent pain (P<0.05).

Conclusion: The risk of persistent pain in patients with meniscus injury of knee joint 6 months after arthroscopic surgery is independently related to age, articular cartilage injury, the starting time of postoperative weight bearing, cold compress in postoperative operation area and synovial membrane removal during operation.