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hypersensitivity. Langton et al . found that severe ALVAL was related to the elevations of cobalt and chromium concentration in joint fluids ( 26 ). A positive association between blood metal ion concentrations and ALVAL was also noted in failed MoM HA ( 27 , 28
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recent advances in THA technique and improved outcomes, we must still pose the question: why do some THAs fail, leading to technically complicated and expensive revision surgery? This question is of particular importance nowadays at a time when economic
Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
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These authors contributed equally to the manuscript
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by contact with the original investigators and, if that failed, calculated with available data. Notably, if the data were presented as median with interquartile range or median with range, the mean and standard deviation were calculated using the
Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France
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failed to fit adequately; however, this was not in the primary THA group, but in the first revision THA case. Bargar 9 reported that during revision surgery “an unrecognized open-section defect was present laterally from a guttering of the femur at an
Steadman Clinic and United States Coalition for the Prevention of Illness and Injury in Sport, Vail, Colorado, USA
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, labral tears, and extra-articular tendon pathologies. FAI results from bony incongruity between the femoral head (cam impingement), the acetabulum (pincer impingement), or both (mixed impingement). When conservative treatments fail, hip arthroscopy has
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flexion such as ballet. The patient only rarely experiences severe pain and conservative treatment should be the ‘gold standard’. When conservative options fail, arthroscopic tenotomy of the psoas tendon can relieve the symptoms. Arthroscopic psoas
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. However, the authors concluded that there was no standard protocol described and the conversion for further surgery might be difficult. 68 Tanzer et al published a study of 17 failed porous rods out of 113 implanted (15%). The patients all had a pre
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, regardless of the classification, there is general agreement that attempting to insert a standard hemispheric cap alone is prone to fail. In such cases variable degree complex reconstruction techniques have to be employed depending on the amount of associated
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Department Of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
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with extended trochanteric osteotomy fully healed. Correcting varus deformity of the proximal femur A loose, short femoral component can cause the varus remodelling of the proximal femur. This usually occurs at the tip of the failed
Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece
Hôpital de la Tour, Geneva, Switzerland
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Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece
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.4%); there were also three infection cases with unspecified type of fixation. The infection rate of studies varied between 0% and 33%. Long-term follow-up studies reported infection rate between 3% and 6.7%. 16 , 21 , 22 Fifty-seven THAs were failed due