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Christoph H. Lohmann Department of Orthopeadic Surgery, Otto-von-Guericke University, Leipziger Str. 44,39120 Magdeburg, Germany

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Sanjiv Rampal Department of Orthopeadic Surgery, Otto-von-Guericke University, Leipziger Str. 44,39120 Magdeburg, Germany

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Martin Lohrengel Department of Orthopeadic Surgery, Otto-von-Guericke University, Leipziger Str. 44,39120 Magdeburg, Germany

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Gurpal Singh Division of Musculoskeletal Oncology, University Orthopaedics Hand and Reconstructive Microsurgery Cluster, National University Health System, 1E Kent Ridge Road, 119228 Singapore

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orthopaedic surgeon, understanding the respective advantages and disadvantages of each imaging modality is required for optimal patient care. With regard to failed joint replacements, pre-operative assessment is critical for determining the underlying

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M M Morlock Institute of Biomechanics, TUHH Hamburg University of Technology, Hamburg, Germany

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E Gomez-Barrena Department of Orthopaedic Surgery and Traumatology, Universidad Autónoma de Madrid, Madrid, Spain

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D C Wirtz Department of Orthopaedics and Traumatology, University Hospital Bonn, Bonn, Germany

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A Hart London Implant Retrieval Centre, Royal National Orthopaedic Hospital, Stanmore, UK

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J P Kretzer Department of Orthopaedic Surgery, Heidelberg University Hospital, Heidelberg, Germany

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failed systemically during their clinical use. These failures included corrosion-induced loosening of cemented titanium stems ( 4 ), mechanical breakdown of a polymethylmethacrylat (PMMA) bone cement due to problems with the glass transition temperature

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Maurizio Calcagni University Hospital Zürich, Switzerland

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Thomas Giesen University Hospital Zürich, Switzerland

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s by means of ulna head replacement with silastic implants. We define these implants as Type 1 implants, aimed at creating an interposition between the bone ends. Since the failed silicone arthroplasty was abandoned, until recently few reports could

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Catalin Cirstoiu Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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Bogdan Cretu Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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Sergiu Iordache Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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Mihnea Popa Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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Bogdan Serban Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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Adrian Cursaru Orthopedics and Traumatology Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania

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fail due to advanced local destruction, resection and reconstruction may avoid subjecting the patient to secondary intervention. In the case of a bone metastasis associated with a pathological bone fracture, osteosynthesis or reconstruction should be

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Michele Vasso Concordia Hospital for Special Surgery, Rome, Italy

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Alexander Antoniadis Bürgerspital Solothurn, Switzerland

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Naeder Helmy Bürgerspital Solothurn, Switzerland

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In patients with BMI ⩾ 35 kg/m 2 , Bonutti et al 32 found, in 2011, higher UKA failure rates (12.5%) whereas Knee Society scores were lower in the surviving high-BMI knees. In a retrospective study on 471 failed medial UKAs, Citak et al 33

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Megan Conti Mica University of Chicago, Chicago, Illinois, USA
Department of Orthopedics, AZ Monica, Deurne, Belgium
Department of Orthopedics, AZ Monica, Deurne, and University Hospital Antwerp, Edegem, Belgium

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Pieter Caekebeke University of Chicago, Chicago, Illinois, USA
Department of Orthopedics, AZ Monica, Deurne, Belgium
Department of Orthopedics, AZ Monica, Deurne, and University Hospital Antwerp, Edegem, Belgium

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Roger van Riet University of Chicago, Chicago, Illinois, USA
Department of Orthopedics, AZ Monica, Deurne, Belgium
Department of Orthopedics, AZ Monica, Deurne, and University Hospital Antwerp, Edegem, Belgium

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radioulnar articulation is not involved since it moves as a unit. 1 Chronic instability typically occurs from a traumatic event that commonly involves an elbow dislocation that remains unstable as the lateral collateral ligament complex fails to heal

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Koray Şahin Bezmialem Vakif University, Department of Orthopedics and Traumatology, Istanbul, Turkey

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Alper Şükrü Kendirci Erciş Şehit Rıdvan Çevik State Hospital, Department of Orthopedics and Traumatology, Van, Turkey

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Muhammed Oğuzhan Albayrak Istanbul University Istanbul Faculty of Medicine, Department of Orthopedics and Traumatology, Istanbul, Turkey

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Gökhan Sayer Muş State Hospital, Department of Orthopedics and Traumatology, Muş, Turkey

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Ali Erşen Istanbul University Istanbul Faculty of Medicine, Department of Orthopedics and Traumatology, Istanbul, Turkey

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fails ( 21 , 22 ). Currently accepted management is that surgical intervention should be considered only for a limited group of patients whose symptoms persist despite the appropriate rehabilitation program. Surgical treatment should be avoided

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Raul Barco Hospital Universitario La Paz, Madrid, Spain

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Olga D. Savvidou Athens University Medical School, Attikon University Hospital, Athens, Greece

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John W. Sperling Mayo Clinic, Rochester, USA

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Joaquín Sanchez-Sotelo Mayo Clinic, Rochester, USA

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Robert H. Cofield Mayo Clinic, Rochester, USA

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irreparable rotator cuff tears without osteoarthritis, 3 inflammatory arthritis, 4 fracture sequelae, 5 tumour resection, 6 failed hemiarthroplasty after fracture, 7 failed hemiarthroplasty with cuff deficiency, 8 failure after

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Maria E Dey Hazra Steadman Philippon Research Institute, Vail, Colorado, USA

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Rony-Orijit Dey Hazra Steadman Philippon Research Institute, Vail, Colorado, USA

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Jared A Hanson Steadman Philippon Research Institute, Vail, Colorado, USA

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Phob Ganokroj Steadman Philippon Research Institute, Vail, Colorado, USA
Faculty of Medicine Siriraj Hospital, Mahidol University

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Matthew L Vopat Steadman Philippon Research Institute, Vail, Colorado, USA
The Steadman Clinic, Vail, Colorado, USA

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Joan C Rutledge Steadman Philippon Research Institute, Vail, Colorado, USA

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Kohei Yamaura Steadman Philippon Research Institute, Vail, Colorado, USA

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Sunikom Suppauksorn Institute of Orthopaedics, Lerdsin General Hospital, Bangkok, Thailand

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Peter J Millett Steadman Philippon Research Institute, Vail, Colorado, USA
The Steadman Clinic, Vail, Colorado, USA

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dependent on age, rupture morphology, and patient expectations. Regardless, if non-operative treatment fails, surgical treatment should be considered. Treatment of MIRCTs remains a challenging dilemma for surgeons. The intricate interaction between an

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Ismail Remzi Tözün Department of Orthopaedic Surgery and Traumatology, Acibadem Mehmet Ali Aydınlar University, School of Medicine, Acibadem Maslak Hospital, Sarıyer/Istanbul, Turkey

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Vahit Emre Ozden Department of Orthopaedic Surgery and Traumatology, Acibadem Mehmet Ali Aydınlar University, School of Medicine, Acibadem Maslak Hospital, Sarıyer/Istanbul, Turkey

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Goksel Dikmen Department of Orthopaedic Surgery and Traumatology, Acibadem Mehmet Ali Aydınlar University, School of Medicine, Acibadem Maslak Hospital, Sarıyer/Istanbul, Turkey

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Kayahan Karaytuğ Department of Orthopaedic Surgery and Traumatology, Acibadem Mehmet Ali Aydınlar University, School of Medicine, Acibadem Maslak Hospital, Sarıyer/Istanbul, Turkey

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DAIR treatment. 13 DAIR seeks to preserve a stable implant in a functional patient. 13 The success rates vary among different studies, ranging from 16% to 82%. 14 – 16 The concern that a failed DAIR undermines the future success of

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