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% have been reported with RH-TKAs, with infections and aseptic loosening the most frequent complications. 1 Patellar instability and prosthetic dislocation can also occur. The dislocation of a RH-TKA is a complication described in the literature
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Porto Biomechanics Laboratory (LABIOMEP), Faculty of Sports, University of Porto, Porto, Portugal
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Dom Henrique Research Centre, Porto, Portugal
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School of Medicine, Minho University, Braga, Portugal
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techniques. 17 – 22 The most frequent concerns in medial collateral release are the iatrogenic rupture of the MCL, saphenous nerve or vascular injury, residual instability and postoperative pain. 21 The prevalence of this surgical gesture has not
Clínica Universidad de los Andes, Santiago, Chile
Universidad Andrés Bello, Hospital del Trabajador, Facultad de Medicina, Santiago, Chile
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Sanatorio Güemes, Buenos Aires, Argentina
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Spine Unit, Department of Traumatology, Clínica Alemana, Santiago, Chile
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Department of Orthopedics and Traumatology, Paracelsus Private Medical University Nuremberg, Nuremberg, Germany
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( 4 ). The failure of the nonoperative treatment was reported in about 20% of the cases, probably due to missed mechanical instability. The torpid evolution of isolated cervical spine facet fractures can result in persistent cervical pain, subsequent
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micromotion in modular implants, have greatly reduced this problem. Today infection, instability, malalignment, stiffness and dissatisfaction with the outcome of the procedure are the main drivers for early revision. 1 In particular, this is a more
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scapular fractures can be treated conservatively with expected good outcome. 4 , 5 However, whenever there is involvement of the glenoid, especially if there is great fracture displacement which may lead to post-traumatic arthritis or instability
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Additionally, a third procedure has been proposed to restore stability, consisting of repairing the capsulolabral complex. 4 The traditional Latarjet (TL) surgery has proved to be effective for the management of recurrent anterior glenohumeral instability
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AO Foundation, PAEG Expert Group, Davos, Switzerland
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of discoid menisci with normal posterior femoral fixation, it is established that there is a synergy between discoid shape and instability. 15 The meniscus is completely vascularized at birth, with progressive decline until age 10 years, at which
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insertion of these peripheral stabilizers. 24 In case of component malposition or loosening, flexion and extension gap are unbalanced, resulting in a condition of ‘pseudo-instability’. In this case, the soft tissue envelope is maintained, and component
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preventing talar abduction, pronation and external rotation. Syndesmotic lesions with associated damage of the deltoid ligament produce a still greater instability of the talus. 2 This instability, if uncorrected, can lead to chronic instability that can
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collateral ligament (MCL) insufficiency, and, of those, some may have chronic signs of impingement, also known as ‘chronic valgus overload syndrome’. Acute medial elbow instability is usually a distinct and obvious diagnosis, but progressive attenuation and
