Zeitschrift für Orthopädie und Unfallchirurgie
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Since its introduction in 1994, autologous chondrocyte implantation (ACI) has become an established surgical treatment for symptomatic isolated cartilage defects of the knee. Success rates vary between 80 and 95% and the clinical outcome seems to depend on various individual factors. The aim of the present review article is to summarise factors that affect clinical outcome following ACI for treatment of symptomatic cartilage defects of the knee based upon the scientific literature available on this topic. ⋯ Knowledge of all relevant parameters that influence clinical outcome following ACI is essential in order to achieve an optimal clinical outcome in patients with cartilage defects of the knee. This paper presents a review of the scientific literature available which focuses on the questions as to what parameters influence the outcome of a patient following ACI for treatment of cartilage defects of the knee. No isolated factors could be identified that influence the outcome following ACI alone, but it seems that clinical outcome is influenced by many different parameters. These parameters should be considered carefully, at the time of decision about what kind of treatment is applied. Furthermore, the patient should be informed especially about those parameters which can be influenced by him-/herself in order to create good prerequisites for the surgical treatment.
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The diagnosis and treatment of patellar dislocation is very complex. The aim of this study is to give an overview of the biomechanics of the patellofemoral joint and to point out the latest developments in diagnosis and treatment of patellar dislocation. ⋯ It seems that the predominating factors for patellar dislocation are heterogenic morphology in combination with individual predisposition. Non-surgical treatment is typically recommended for primary patellar dislocation without any osteochondral lesions and in the absence of significant risk factors for redislocation. If surgical treatment is deemed necessary, addressing the essential pathomorphology has become the primary focus.
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Fractures of the radial head and neck are the most common involving the elbow and account for 5 % of all fractures in adult individuals. Due to the complex anatomy and biomechanics of the elbow joint radial head fractures are challenging, particularly the comminuted ones. Detailed knowledge of the complex joint anatomy, biomechanics and operative approaches are indispensable for analysing and building a treatment plan. ⋯ Sophisticated reconstructive efforts with combined screw- and plate-osteosynthesis, partial resection or radial head arthroplasty are needed in comminuted fractures. The purpose of this article is to give a detailed review of the anatomy, biomechanics and fracture mechanism. Clinical examination techniques are displayed and operative approaches as well as the conservative and operative treatment algorithms are illustrated.
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Review Meta Analysis
[Electromagnetic fields, electric current and bone healing - what is the evidence?].
For more than 30 years the potential effects of electrical stimulation on bone healing have been investigated. Up to now this therapy is controversial and not established as a standardised treatment option. This systematic review and metaanalysis focuses on the potential effects of electromagnetic fields and high-frequency electric fields on bony healing. ⋯ When performing a subgroup analysis a statistically significant result could not be confirmed by the studies with a higher methodological quality. In view of the heterogeneous physical parameters with different frequencies, time course, flux densities and in view of the methodological deficits, a general conclusion seems difficult. Recommendations or standards of therapy are so far not available.
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Proximal ulna fractures are common injuries in the upper extremity. The severity of injury ranges from isolated olecranon fractures to complex elbow fracture dislocations. ⋯ Furthermore, standard and recent techniques of surgical treatment are described in detail for olecranon and Monteggia fractures as well as for fractures of the coronoid process. Functional outcome and complications of fracture treatment are discussed.