|
Abstract Objective To investigate the effect of patellafemerol joint contact stress on the function of knee joint.Methods A total of 24 patients who accepted unilateral total knee arthroplasty(male 8 cases，female 16 cases)from April 2016 to December 2016.To measure the PFJS in different angle of knee flexion(30°、60°、90°、120°)before and after the prothesis was replaced with pressure sensitive films.The patients were divide into two groups according to the indentation(the dumbbell-shaped and the comet-shaped).The knee joint flexion，kujala score，HSS knee joint score and knee anterior pain were followed up for 1~1.5 years at lest The results were statistically processed.Results The general condition of the patient，preoperative HSS，ROM and the patellofemoral joint stress had no obvious statistical significance.According to indentation，14 patients were gouped into the dumbbell set.The patellofemoral joint pressure distribution was normal，and imaging showed no obvious tilt.10 patients grouped into the comet group，including 7 patients with patellofemoral pressure distribution too tends to the lateral contact surfaces，more than 3 main tending to the inside contact pressure distribution.Postoperative imaging showed all patients with patellar tilt to different exten.Follow-up results showed two groups of patients with postoperative HSS score，ROM and knee pain，were better than preoperative(P＜0.05).The dumbbell group’s kujala score and ROM were better than the comet group(P＜0.05).There was no significant difference between group HSS scores(P＜0.05).Conclusion Patellofemoral joint pressure has a certain effect on the recovery of knee joint function after TKA and the adjustment of patellofemoral joint biomechanics should be paid attention to.
|
|
|
|
|
|
���������� 14010702070875��