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Mechanical or anatomical alignment techniques create a supposedly ‘biomechanically friendly’ but often functionally limited prosthetic knee.
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Alternative techniques for alignment in total knee arthroplasty (TKA) aim at being more anatomical and patient-specific, aiming to improve functional outcomes after TKA.
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The kinematic alignment (KA) technique for TKA has shown good early clinical outcomes. Its role in extreme anatomical variation remains to be defined.
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The restricted KA technique for TKA might be a reasonable option for patients with extreme anatomical variation.
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While unicompartmental knee arthroplasty (UKA) has many advantages over TKA, the revision rate remains higher compared with TKA. One major explanation is the relative ease with which a UKA can be converted to a TKA, compared with revising a TKA. This can be considered as an additional advantage of UKA. Another reason is that surgeons favour revising a UKA to a TKA in cases of degeneration of the other femorotibial compartment rather than performing a relatively simple re-operation of the knee by doing an additional UKA (staged bi-UKA).
Cite this article: EFORT Open Rev 2018;3:1–6. DOI: 10.1302/2058-5241.3.170021
Personalized Arthroplasty Society, Atlanta, Georgia, USA
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Nuffield Orthopaedic Centre, Headington, Oxford, UK
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Personalized Arthroplasty Society, Atlanta, Georgia, USA
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South-West London Elective Orthopaedic Centre, Epsom, UK
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Shamir Medical Center, Zriffin, Israel
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Département de Chirurgie, Université de Montréal, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada
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optimizing patella femoral joint kinematics (by replicating the normal valgus angle of the femur it prevents the lateral retinacular structures from becoming over tensioned in flexion, as is the case with a mechanical alignment technique – Fig. 6 ), may in
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). This is very reproducible with measured resection instrumentation – we therefore cannot talk of malalignment. This therefore means that certain anatomies may not be adequate for a mechanical alignment technique with measured resection. In those cases
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target angle with less variation and outliers when compared with freehand and mechanical alignment techniques ( 81 ). Conclusion Total hip arthroplasty has become one of the most common and successful orthopaedic procedures. Correct cup
Academic Department of Trauma and Orthopaedics, LGI, University of Leeds, Leeds, UK
Leeds Teaching Hospitals Trust, UK
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The Lister Hospital, Chelsea Bridge, London, UK
Centre de l’Arthrose - Clinique du Sport, Bordeaux-Mérignac, France
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Leeds Teaching Hospitals Trust, UK
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E et al. Mechanical alignment technique for TKA: are there intrinsic technical limitations? Orthop Traumatol Surg Res 2017 ; 103 : 1057 – 1067 . 38. Blakeney W Beaulieu Y Puliero B Kiss MO
