Goff Greenberg (grapesummer20)

Ankle fractures with involvement of the posterior malleolus have a poor prognosis. The traditional concept of addressing the posterior fragment as the final step in the surgical reconstruction depending on the fragment size manifest in the lateral X‑ray, does not do justice to the anatomic and biomechanical relevance of the posterior malleolus. Intra-articular step-offs and fragment displacement ≥ 2 mm, impacted intercalary fragments, involvement of the fibular notch and instability of the syndesmosis, represent parameters relevant for the surgical reconstruction and the functional and radiomorphological outcome independent of fragment size. A valid assessment of these parameters can only be achieved via computed tomography (CT) including multiplanar 2D and 3D reconstruction. This is the foundation for the classification of posterior malleolar fractures according to Bartoníček et al., it forms the basis of the preoperative analysis of the fracture components and represents a decision-making tool for the indications for surgery. The individual fracture pattern guides the selection of the suitable approach or a combination of approaches and the surgical strategy. Making use of the posterior approaches enables the surgeon to have a direct view of the fracture components of the posterior malleolus as a precondition for an anatomic reduction. This central surgical step is frequently done as the first measure of the surgical reconstruction of the ankle joint. Furthermore, direct reduction and posterior stabilization is more accurate and stable than indirect reduction from an anterior approach with indirect fixation using lag screws. An additional temporary transfixation of the tibiofibular syndesmosis is often dispensable. Ankle fractures are among the most common fractures in adults but often with unsatisfactory long-term results. In recent years several new surgical treatment approaches have been developed but little has changed regarding the aftercare. The postoperative treatment can be divided into two main components, weight bearing and mobilization. In Germany most patients are still recommended to be immobilized with partial weight bearing for 6weeks after surgery. The aim of this review is to present the current evidence on postoperative treatment based on an extensive literature search. A total of seven prospective randomized controlled trials (RCT) compared early and delayed full weight bearing and six RCTs compared ankle mobilization with aform of immobilization. In none of these studies did early full weight bearing lead to an increased complication rate but some studies found ashortened time before return to work and, at least in the short term, better clinical results. Immediate mobilization led to an incr patient populations. The early functional therapy following surgically treated ankle fractures increased the rate of wound healing complications in only one of 13 studies, otherwise there were no significant differences in complication rates; however, early functional therapy partly shortened the time to return to work and led to better clinical results in the short term. For future studies, standardization of the parameters assessed would be important to provide clear evidence-based guidelines on follow-up treatment for specific fractures and patient populations.An optimized alignment of related protein sequences helps to see their important shared features and to deduce their phylogenetic relationships. At low levels of sequence similarity, there are no suitable computer programs for making the best possible alignment. This review summarizes some guidelines for how in such instances, nevertheless, insightful alignments can be made. The method involves, basically, the understanding of molecular family features at both the protein and intron-exon level, and the collection of many related sequences so that gradual differences may be observed. The method is exemplified b