Correlation analysis of changes of knee joint line on anterior knee pain after total knee arthroplasty
Objective To analyze the correlation of changes of knee joint line on anterior knee pain after total knee arthroplasty(TKA).Methods 70 patients(80 knees in total)with knee osteoarthritis with varus deformity were selected,and the same prosthesis was selected for TKA.The joint lines were measured before and after operation,and the change degree of the joint lines was calculated.Knee score,knee joint function score and Feller patella score were performed before operation and 1 year after operation respectively to analyze the influence of changes of joint line after TKA on anterior knee pain.Results At 1 year after operation,the knee score,knee joint function score and Feller patella score were(90.7±3.3),(77.8±3.9)and(26.9±3.5)points,which were higher than those of(57.7±4.6),(47.2±4.0)and(10.9±2.3)points before operation.The difference was statistically significant(P<0.05).The level of the knee joint line changed from-5.0 to 10.0(2.09±4.0)mm.The joint line increased in 58 knees and decreased in 22 knees.Among them,21 knees had change in knee joint line>4 mm,and 8 knees had anterior knee pain;8 knees had change in knee joint line≤4 mm and 2 knees had anterior knee pain.Before operation,the knee score,knee joint function score and Feller patella score of joint line elevation>4 mm were(57.3±4.8),(47.9±3.6)and(10.5±2.5)points;the knee score,knee joint function score and Feller patella score of patients with change in knee joint line≤4 mm were(57.5±5.0),(45.6±4.0)and(10.5±1.9)points.At 1 year after operation,the knee score,knee joint function score and Feller patella score of patients with change in knee joint line>4 mm were(90.5±3.3),(77.5±3.9)and(24.7±4.8)points;the knee score,knee joint function score and Feller patella score of patients with change in knee joint line≤4 mm were(90.0±3.9),(77.3±4.1)and(24.6±3.0)points.The knee score,knee joint function score and Feller patellar score of patients with change of knee joint line≤4 mm and>4 mm before and 1 year after operation were compared,and the differences were statistically significant(P<0.05).Pearson correlation analysis showed that the change of knee joint line>4 mm and Feller patellar score was negatively correlated with the knee joint line change level(r=-0.744,P=0.000<0.05).Change of knee joint line≤4 mm and Feller patellar score had no correlation with knee joint line change level(r=-0.442,P=0.273>0.05).Conclusion The elevation of knee joint line is more common than the decrease after TKA.Anterior knee pain is closely related to the change of knee joint line after TKA.The elevation of knee joint line>4 mm is an important cause of anterior knee pain.
Total knee arthroplastyKnee joint lineAnterior knee painKnee osteoarthritisCorrelation
NETL
NSTL
万方数据
维普
