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Jetske Viveen, Izaak F. Kodde, Andras Heijink, Koen L. M. Koenraadt, Michel P. J. van den Bekerom, and Denise Eygendaal

ranging from 61% to 97%. 5 , 7 This raises questions of whether implant- or fixation-related factors may be related to early failure. Except in the case of silicone RHPs, that have previously proved to be biologically and biomechanically insufficient

Juan Carlos Monllau, Simone Perelli, and Giuseppe Gianluca Costa

failure is still substantial. It ranges from 1.8 to 11.1% ( 3 , 4 ) at midterm follow-up and up to 10.4–16.7% at long-term follow-up ( 5 ). The unambiguous and universally accepted definition of failure after ACL reconstruction is yet to be determined

Jimmy Ng, Pau Balcells-Nolla, Peter J. James, and Benjamin V. Bloch

Introduction Extensor mechanism failure is an uncommon but serious complication after primary or revision total knee arthroplasty (TKA). It is associated with significant morbidity and reduced quality of life due to extensor lag, instability

Emanuele Diquattro, Sonja Jahnke, Francesco Traina, Francesco Perdisa, Roland Becker, and Sebastian Kopf

). Failure of ACL-R is defined by a history of previous primary ACL-R with a new onset of clinical symptoms such as instability and possibly giving way episodes. Additionally, positive Lachman and/or pivot shift tests are expected. The diagnosis of graft

Emilio Calvo, María Valencia, Antonio Maria Foruria, and Juan Aguilar Gonzalez

Latarjet procedure and they had a significantly higher rate of failure than those that converted to ‘on-track’ ( 12 ). In this clinical setting, some authors have suggested the congruent-arc technique as it provides approximately 5 mm more bone augmentation

Theofilos Karachalios, George Komnos, and Antonios Koutalos

-up. 1 - 4 Following the initial problems which pioneer surgeons noted in the 1960s and 1970s, such as surgical technique, structural implant failures and infection, orthopaedic surgeons in the 1980s faced problems regarding choice of appropriate

Michele Vasso, Alexander Antoniadis, and Naeder Helmy

knee replacement registries still show a relatively high revision and failure rate of UKA, especially if compared with TKA. 5 In particular, many of these failures occur in the early post-operative period (< 5 years). 6 The higher incidence of

M M Morlock, E Gomez-Barrena, D C Wirtz, A Hart, and J P Kretzer

History Arthroplasty became popular in the second half of the 20th century and has developed since then into one of the most successful fields in orthopaedics ( 1 ). This development was not free from problems and failures. The reduction of

Andrea Fidanza, Stefano Necozione, and Lorenzo Garagnani

–IV evidence involving at least 10 patients with at least 1 year and 80% follow-up, and reporting at least 1 outcome measure of interest including post-operative pain, function or failures. Exclusion criteria were studies written in other languages (not in

Olivier Guyen

rates have been reported. Re-operation for instability is known to carry the highest likelihood of failure of any re-operation after THA 2 with re-dislocation rates ranging from 20% to 40%. 3 , 4 With better understanding of the causes of