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Copyright of Operative Orthopädie und Traumatologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The demographic development and the increase of accidental trauma of the knee during recreational activities in young people are reflected in the continuously increasing number of implantations of knee endoprostheses due to secondary posttraumatic arthritis of the knee. Material and methods: This article describes the principal problems that can occur during endoprosthetic knee replacement in patients after trauma and their solutions. The fundamental aspects of operative techniques and choice of suitable implants are presented and prognostic factors are discussed. Results and discussion: The choice of a suitable implant and especially the use of constrained, semiconstrained or unconstrained implants is dependent on existing ligamentous damage, bony defects and structural alignment due to deformities. Selection of the surgical approach has to be considered to minimize the risk of soft tissue necrosis. Simultaneous local or vascularized flap surgery is sometimes necessary. Additional surgical steps due to residual damage to the extensor mechanism of the knee as well as malalignment of the lower leg have to be planned preoperatively. Conclusion: Endoprosthetic reconstruction of the knee joint due to posttraumatic arthritis is challenging. Apart from the wide range of implants, ranging from unicompartmental arthroplasty to modular tumor prosthetic systems, additional surgical steps, such as osteotomy and reconstruction of the extensor mechanism including interdisciplinary flap surgery have to be taken into account. The results of functional outcome and implant survival are basically dependent on the preoperative status but are generally poorer in comparison to arthroplasty of primary osteoarthritis. [ABSTRACT FROM AUTHOR]

Copyright of Operative Orthopädie und Traumatologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Computer-assisted navigation is increasingly developing into a standard procedure in total knee arthroplasty. Recently it was shown that computer navigation not only corrects leg alignment and positioning of the prosthesis but also allows a precise ligament balancing as well as a better judgment and an accurate tuning of intra-articular and extra-articular bone deformities. Nowadays asurface replacement prostheses can be implanted in many cases where a constraint solution was previously necessary. The method is useful particularly in patients with posttraumatic arthritis by straightening out bone deformities and adjusting unstable and/or scarred ligaments. The procedure does not have any essential disadvantages and on the contrary computer-assisted navigation seems to provide even more benefits. Economically it can be anticipated that computer-assisted navigation will be cost-effective in the medium and long term but the final proof is still lacking. [ABSTRACT FROM AUTHOR]

Total elbow replacement is well established for elbow destruction in rheumatoid arthritis. But its use for primary treatment of elbow fractures is less frequent than such treatment for fractures of the shoulder and hip joint. Posttraumatic conditions such as pseudarthrosis of the distal humerus and posttraumatic arthritis are rare indications for total elbow arthroplasty. This article gives an overview of the present literature regarding the indications and results for primary total elbow arthroplasty for fractures of the distal humerus. We also look at studies dealing with the role and limitations of total elbow replacement in posttraumatic arthritis, pseudarthrosis of the distal humerus, and stiff elbow. [ABSTRACT FROM AUTHOR]

Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Langenbecks Archiv fuer Chirurgie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)