ORTHOPAEDICS
Modular versus all-polyethylene tibial components: comparison of pre- and early post-operative patient scores in total knee replacement
Bruno R. De Carvalho,
Omid S. Yassaie,
Dawson C. W. Muir,
Corresponding Author
Bruno R. De Carvalho
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Correspondence
Dr Bruno R. De Carvalho, Orthopaedic Department, Tauranga Hospital, Tauranga 3110, New Zealand. Email: [email protected]
Search for more papers by this authorOmid S. Yassaie
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Search for more papers by this authorDawson C. W. Muir
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Search for more papers by this authorBruno R. De Carvalho,
Omid S. Yassaie,
Dawson C. W. Muir,
Corresponding Author
Bruno R. De Carvalho
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Correspondence
Dr Bruno R. De Carvalho, Orthopaedic Department, Tauranga Hospital, Tauranga 3110, New Zealand. Email: [email protected]
Search for more papers by this authorOmid S. Yassaie
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Search for more papers by this authorDawson C. W. Muir
Tauranga Orthopaedic Research Society (TORSI), Grace Orthopaedic Centre, Tauranga, New Zealand
B. R. De Carvalho MBChB; O. S. Yassaie MBChB; D. C. W. Muir MBChB, FRACS (Orth).Search for more papers by this authorHealth and Disability Ethics Committees (New Zealand) – Northern Y Ethics Committee Approval: NTY/11/EXP/003.
Abstract
Introduction
All-polyethylene (AP) tibial components of total knee replacement (TKR) are substantially cheaper than their modular counterparts. It is well established that their survivorship and radiographic outcomes are comparable. In this study, patient-derived outcome measures were used to compare these two implant types.
Methods
A cohort of 456 primary TKRs (142 AP, 314 modular) were assessed with preoperative and 1-year post-operative Oxford Knee Score, Western Ontario and McMaster Universities Arthritis Index and Short Form – 12 scores.
Results
Both groups performed well with no significant difference in improvement and final scores at 1 year. Although there was a significant difference in mean age among the groups (P < 0.001) age-adjusted scores continued to show no significant difference between the two groups.
Discussion
Our results support the more frequent use of AP tibial components for uncomplicated TKR.
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