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Philipp Schleicher Zentrum für Wirbelsäulenchirurgie und Neurotraumatologie, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Germany

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Andreas Pingel Zentrum für Wirbelsäulenchirurgie und Neurotraumatologie, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Germany

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Frank Kandziora Zentrum für Wirbelsäulenchirurgie und Neurotraumatologie, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Germany

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. Physician-guided fluoroscopy In the neurologically intact patient who shows suspicious findings for segmental instability on CT or MRI, a dynamic fluoroscopy in flexion and extension might add diagnostic value. This examination should be performed by an

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Jimmy Wui Guan Ng Nottingham City Hospital, Nottingham, UK

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Benjamin V. Bloch Nottingham City Hospital, Nottingham, UK

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Peter J. James Nottingham City Hospital, Nottingham, UK

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‘mid flexion instability’ OR ‘quadriceps function’. One author (JN) screened the titles and abstracts of all the studies and identified 92 papers to review. After reviewing all the papers, 52 papers were deemed to be relevant to this review. The

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F T Spindler Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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V Herterich Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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B M Holzapfel Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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W Böcker Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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H Polzer Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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S F Baumbach Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany

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recently, arthroscopy has been promoted ( 7 ). However, arthroscopy is an invasive, highly demanding technique, and the definition of instability criteria is hindered due to considerable individual anatomical variations ( 11 ). The external rotation

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E. Itoi E. Itoi, Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan

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the mid-range instability, not to the end-range instability. Fig. 1 Bony defects created anteroinferiorly. Anteroinferior bony defects were created at the 4:30 clock position stepwise. Fig. 2 End-range stability: a) normal shoulder at

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Andrea Angelini Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy

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Nicolò Mosele Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy

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Elisa Pagliarini Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy

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Pietro Ruggieri Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy

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instability, deformity or pain. Posterior spinal stabilization with screws and rods associated with decompression, or anterior stabilization with plate and screws to induce vertebral fusion, can be used in the most severe cases of cervical and thoracic

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E. Carlos Rodríguez-Merchán Department of Orthopaedic Surgery, “La Paz” University Hospital-IdiPaz, Madrid, Spain

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%, with infection and aseptic loosening as the most common complications. Rotating hinge knee prostheses were most commonly indicated for infection, aseptic loosening, instability and bone loss. They had good outcome scores and survivorship, but continued

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Filippo Familiari Department of Orthopaedics and Traumatology, Villa del Sole Clinic, Italy

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Jorge Rojas Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, USA

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Mahmut Nedim Doral Department of Orthopaedics and Traumatology, Hacettepe University, Turkey

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Gazi Huri Department of Orthopaedics and Traumatology, Hacettepe University, Turkey

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Edward G. McFarland Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, USA

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of the humerus, which has been postulated to be necessary to provide a compressive force from the deltoid muscle. 45 , 63 Another reason for instability may be the removal of the rotator cuff to gain exposure and place the implants. Therefore

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Fabian Krause Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland

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Helen Anwander Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland

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patients with OLT present ankle ligament laxity and 39% of patients with ankle instability present with an OLT ( 5 , 6 ). Subsequently, acute trauma and repetitive micro-traumata due to ankle instability and/or hindfoot malalignment seem to be a leading

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Marta Maio Department of Orthopaedics and Traumatology, Centro Hospitalar de Trás os Montes e Alto Douro, Vila Real, Portugal

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Marco Sarmento Shoulder and Elbow Unit, Orthopaedics Department, Hospital CUF Descobertas, Lisboa, Portugal

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Nuno Moura Shoulder and Elbow Unit, Orthopaedics Department, Hospital CUF Descobertas, Lisboa, Portugal

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António Cartucho Shoulder and Elbow Unit, Orthopaedics Department, Hospital CUF Descobertas, Lisboa, Portugal

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radiographic description of lesion, naming it Hill–Sachs lesion (HSL). 1 Later on the glenoid rim lesions were reported. 1 Quantifying bone loss is of utmost importance to decide the best treatment for recurrent anterior glenohumeral instability

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Marko Nabergoj Valdoltra Orthopaedic Hospital, Ankaran, Slovenia
Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia

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Patrick J. Denard Department of Orthopaedic & Rehabilitation, Oregon Health & Science University, Portland, Oregon, USA

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Philippe Collin Centre Hospitalier Privé Saint-Grégoire (Vivalto Santé), Saint-Grégoire, France

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Rihard Trebše Valdoltra Orthopaedic Hospital, Ankaran, Slovenia
Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia

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Alexandre Lädermann Division of Orthopaedics and Trauma Surgery, La Tour Hospital, Meyrin, Switzerland
Division of Orthopaedics and Trauma Surgery, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland

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its indications have been expanded to treat numerous other pathologies. Indications include irreparable rotator cuff tears without arthritic changes, 4 primary glenohumeral arthritis with associated instability (i.e. B2 or D glenoids), 5 revision

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