Intraoperative evaluation of total knee replacement: kinematic assessment with a navigation system

被引:49
作者
Casino, Daniela [1 ]
Zaffagnini, Stefano [1 ]
Martelli, Sandra [1 ]
Lopomo, Nicola [1 ]
Bignozzi, Simone [1 ]
Iacono, Francesco [1 ]
Russo, Alessandro [1 ]
Marcacci, Maurilio [1 ]
机构
[1] Ist Ortoped Rizzoli, Lab Biomeccan, I-40136 Bologna, Italy
关键词
Knee replacement; Computer-assisted surgery; Tibial rotation; Knee osteoarthritis; Femoral rollback; IN-VIVO KINEMATICS; OSTEOARTHRITIC KNEES; ACL RECONSTRUCTION; ARTHROPLASTY; BEARING; WEAR; BIOMECHANICS; PROTOCOL; KT-1000;
D O I
10.1007/s00167-008-0699-3
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Interest in the kinematics of reconstructed knees has increased since it was shown that the alteration of knee motion could lead to abnormal wear and damage to soft tissues. We performed intraoperative kinematic measurements using a navigation system to study knee kinematics before and after posterior substituting rotating platform total knee arthroplasty (TKA). We verified intraoperatively (1) if varus/valgus (VV) laxity and anterior/posterior (AP) laxity were restored after TKA; (2) if TKA induced abnormal femoral rollback; and (3) how tibial axial rotation was influenced by TKA throughout the range of flexion. We found that TKA improved alignment in preoperative osteoarthritic varus knees which became neutral after surgery and maintained a neutral alignment in neutral knees. The VV stability at 0A degrees was restored while AP laxity at 90A degrees significantly increased after TKA. Following TKA, the femur had an abnormal anterior translation up to 60A degrees of flexion, followed by a small rollback of 12 +/- A 5 mm. TKA influenced the tibia rotation pattern during flexion, but not the total amount of internal/external rotation throughout whole range of flexion, which was preserved after TKA (6A degrees A A +/- A 5A degrees). This study showed that the protocol proposed might be useful to adjust knee stability at time zero and that knee kinematic outcome during total knee replacement can be monitored by a navigation system.
引用
收藏
页码:369 / 373
页数:5
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