Department of Orthopaedics, Golden Jubilee National Hospital, Clydebank, UK
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Department of Orthopaedics, Golden Jubilee National Hospital, Clydebank, UK
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Introduction Instability - reported as a feeling of buckling or giving way - is a commonplace symptom in osteoarthritic (OA) knees, being found in up to 72% of individuals. 1 – 5 In an attempt to understand and treat instability, either
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Patellar instability is an important cause of knee disability in children and adolescents. A recent population-based study found an annual incidence rate of 2.58 per 100 000 individuals for lateral patella dislocations (LPD), with higher rates in
Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
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Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
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Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
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been reported, confirming the possible multi-directional factors involved in this dysplastic condition. 1 Patellofemoral dysplasia, despite being universally accepted as one of the most important factors in patellar instability, represents a
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been shown to have satisfactory short- and long-term clinical results. 3 - 13 In contrast with the past where a varus thrust and instability were contra-indications to HTO owing to reported inferior results, 14 , 15 more
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Division of Orthopaedic Surgery, University Hospital of Geneva, Geneva, Switzerland
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( 2 ). Smoking plays a negative role especially as it may interfere with bone healing in open-wedge PTO and may cause nonunion. Instability used to be a contraindication in PTO, but nowadays sagittal and coronal alignment modification through this
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anteroposterior for example) or significant tibiofemoral instability requires full guiding of the tibiofemoral motion by a linked implant 5 which is achieved with a hinged implant rather than a constrained condylar implant. Different types of hinged
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Introduction Recurrent patellar instability is a disabling condition that can lead to articular cartilage injuries, osteochondral fractures, pain, decreased activity and patellofemoral osteoarthritis (OA). The average annual incidence of
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anomalies are often associated with CFD, 4 such as dysplasia of the cruciate ligaments, leading to an anteroposterior knee instability. 5 Manner et al assessed the ligamentous dysplasia in congenital lower limb deformities, particularly in cases of
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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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%, 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
