Intraoperative evaluation of total knee replacement: kinematic assessment with a navigation system
| Autor: | Stefano Zaffagnini, Simone Bignozzi, Nicola Lopomo, D. Casino, Maurilio Marcacci, Francesco Iacono, Sandra Martelli, Alessandro Russo |
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| Přispěvatelé: | D. Casino, S. Zaffagnini, S. Martelli, N. Lopomo, S. Bignozzi, F. Iacono, A. Russo, M. Marcacci |
| Rok vydání: | 2008 |
| Předmět: |
Male
Computer-assisted surgery Knee Joint medicine.medical_treatment Replacement Knee replacement Femoral rollback Knee osteoarthritis Tibial rotation Aged Arthroplasty Replacement Knee Female Humans Joint Instability Monitoring Intraoperative Range of Motion Articular Surgery Computer-Assisted Tibia Treatment Outcome Biomechanical Phenomena Orthopedics and Sports Medicine Surgery Kinematics Computer-Assisted Intraoperative Orthodontics biology musculoskeletal system surgical procedures operative Range of Motion musculoskeletal diseases medicine.medical_specialty Monitoring Arthroplasty medicine Knee Femur business.industry biology.organism_classification Valgus Orthopedic surgery business human activities Articular |
| Zdroj: | Knee Surgery, Sports Traumatology, Arthroscopy. 17:369-373 |
| ISSN: | 1433-7347 0942-2056 |
| DOI: | 10.1007/s00167-008-0699-3 |
| Popis: | 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 0 degrees was restored while AP laxity at 90 degrees significantly increased after TKA. Following TKA, the femur had an abnormal anterior translation up to 60 degrees of flexion, followed by a small rollback of 12 +/- 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 (6 degrees +/- 5 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. |
| Databáze: | OpenAIRE |
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