A. Sakkas, Konstantinidis Ioannis, K. Winter, A. Schramm, F. Wilde
{"title":"Clinical results of autologous bone augmentation harvested from the mandibular ramus prior to implant placement. An analysis of 104 cases","authors":"A. Sakkas, Konstantinidis Ioannis, K. Winter, A. Schramm, F. Wilde","doi":"10.3205/iprs000100","DOIUrl":"https://doi.org/10.3205/iprs000100","url":null,"abstract":"Background: The aim of this study was the evaluation of the clinical success and complication rates associated with autologous bone grafts harvested from the mandibular ramus for alveolar ridge augmentation and the identification of possible risk factors for graft failure. Methods: In a consecutive retrospective study 86 patients could be included. In these patients a total of 104 bone grafts from the mandibular ramus were harvested for alveolar ridge augmentation. Medical history, age of patient, smoking status, periodontal status and complications were recorded. The need for bone grafting was defined by the impossibility of installing dental implants of adequate length or diameter to fulfill prosthetic requirements, or for aesthetic reasons. The surgical outcome was evaluated concerning complications at the donor or at the recipient site, risk factors associated with the complications and graft survival. All patients were treated using a two-stage technique. In the first operation bone blocks harvested from the retromolar region were placed as lateral or vertical onlay grafts using augmentation templates and were fixed with titanium osteosynthesis screws after exposure of the deficient alveolar ridge. After a healing period of 3–5 months computed tomography scans were performed followed by virtual implant planning and the implants were inserted using guided dental implantation. Results: 97 of the 104 onlay bone grafts were successful. In only 7 patients a graft failure occurred after a postsurgical complication. No long-term nerve damage occurred. Postoperative nerve disturbances were reported by 11 patients and had temporary character only. After the healing period between 4 to 5 months, 155 implants were placed (39 in the maxilla, 116 in the mandible). A final rehabilitation with dental implants was possible in 82 of the 86 patients. Except the 7 graft failures, all recorded complications were minor complications which could be easily treated successfully without any long-term problems. Complications at the donor site were recorded in 3 patients and 17 patients experienced complications at the recipient site. Three of 7 patients with graft failure, were secondarily augmented with a new retromolar graft, harvested from the contra-lateral site and dental implants could be successfully inserted later. No association between complications and smoking habit, age of patient, jaw area, and dental situation (tooth gap or free dental arch) could be detected. Conclusions: Retromolar bone grafts are an effective and safe method for the reconstruction of small- to medium-sized alveolar defects of the maxilla and mandible prior to dental implantation and show a low graft failure rate.","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2016-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3205/iprs000100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69524777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kristina Lenz, Michael Brandt, Sandra Fraund-Cremer, Jochen Cremer
{"title":"Coronary artery bypass surgery in diabetic patients - risk factors for sternal wound infections.","authors":"Kristina Lenz, Michael Brandt, Sandra Fraund-Cremer, Jochen Cremer","doi":"10.3205/iprs000097","DOIUrl":"https://doi.org/10.3205/iprs000097","url":null,"abstract":"<p><p>The incidence of sternal wound infections (SWI) after coronary artery bypass surgery (CABG) as reported worldwide is low. However, it is associated with significant increase of postoperative mortality and treatment costs. The major risk factors discussed are diabetes mellitus and bilateral IMA harvesting of the internal mammary artery. This study analyses data of 590 patients receiving CABG concerning the risk factors for SWI. Sternal wound infections occur significantly more often in diabetic patients, one crucial and significant additional risk factor is obesity. </p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc18"},"PeriodicalIF":0.4,"publicationDate":"2016-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977377/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34325727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Serafim Tsitsilonis, David Machó, Sebastian Manegold, Björn Dirk Krapohl, Florian Wichlas
{"title":"Fracture severity of distal radius fractures treated with locking plating correlates with limitations in ulnar abduction and inferior health-related quality of life.","authors":"Serafim Tsitsilonis, David Machó, Sebastian Manegold, Björn Dirk Krapohl, Florian Wichlas","doi":"10.3205/iprs000099","DOIUrl":"https://doi.org/10.3205/iprs000099","url":null,"abstract":"<p><strong>Introduction/background: </strong>The operative treatment of distal radius fractures has significantly increased after the introduction of locking plates. The aim of the present study was the evaluation of health-related quality of life, functional and radiological outcome of patients with distal radius fractures treated with the locking compression plate (LCP).</p><p><strong>Materials and methods: </strong>In the present study 128 patients (130 fractures) that were operatively treated with the LCP (2.4 mm/3.5 mm, Synthes(®)) were retrospectively evaluated. Mean follow-up was 22.7 months (SD 10.6). The fractures were radiographically evaluated (radial inclination, palmar tilt, ulnar variance) pre-, postoperatively and at the last follow-up visit. Range of motion (ROM) was documented. Grip strength was assessed with the use of a JAMAR dynamometer. The score for disabilities of the arm, shoulder and hand (DASH) and the Gartland-Werley score (GWS) were evaluated. Health-associated quality of life was assessed with use of SF-36 Health Survey.</p><p><strong>Results: </strong>Postoperative reduction was excellent; at the last follow-up visit only minimal reduction loss was observed. Except for pronation, a statistically significant decrease of ROM was present; in most cases that was not disturbing for the patients. The injured side achieved 83.9% of grip strength of the intact side. Mean DASH was 18.9 and mean GWS was 3.5. Health-associated quality of life was generally not compromised. However, limitations in ulnar abduction correlated with inferior quality of life. Fracture severity correlated with inferior quality of life, despite the absence of correlation with the functional and radiological outcome. Complication rate was low.</p><p><strong>Conclusions: </strong>Fracture severity seems to affect ulnar abduction and therefore patient quality of life, despite almost anatomical reduction; the objective and subjective scores were in most cases excellent. Modern everyday activities, such as keyboard typing, could be associated with the present results.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc20"},"PeriodicalIF":0.4,"publicationDate":"2016-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977376/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34326152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christian Beltzer, Alexander Eisenächer, Steffen Badendieck, Dietrich Doll, Markus Küper, Stefan Lenz, Björn Dirk Krapohl
{"title":"Retrospective analysis of a VACM (vacuum-assisted closure and mesh-mediated fascial traction) treatment manual for temporary abdominal wall closure - results of 58 consecutive patients.","authors":"Christian Beltzer, Alexander Eisenächer, Steffen Badendieck, Dietrich Doll, Markus Küper, Stefan Lenz, Björn Dirk Krapohl","doi":"10.3205/iprs000098","DOIUrl":"https://doi.org/10.3205/iprs000098","url":null,"abstract":"<p><strong>Introduction: </strong>The optimal treatment concept for temporary abdominal closure (TAC) in critically ill visceral surgery patients with open abdomen (OA) continues to be unclear. The VACM (vacuum-assisted closure and mesh-mediated fascial traction) therapy seems to permit higher delayed primary fascial closure rates (FCR) than other TAC procedures.</p><p><strong>Material and methods: </strong>Patients of our clinic (n=58) who were treated by application of a VAC/VACM treatment manual in the period from 2005 to 2008 were retrospectively analysed.</p><p><strong>Results: </strong>The overall FCR of all patients was 48.3% (95% confidence interval: 34.95-61.78). An FCR of 61.3% was achieved in patients who had a vicryl mesh implanted at the fascial level (VACM therapy) in the course of treatment. Mortality among patients treated with VACM therapy was 45.2% (95% CI: 27.32-63.97).</p><p><strong>Conclusions: </strong>The results of our own study confirm the results of previous studies which showed an acceptable FCR among non-trauma patients who were treated with VACM therapy. VACM therapy currently appears to be the treatment regime of choice for patients with OA requiring TAC.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc19"},"PeriodicalIF":0.4,"publicationDate":"2016-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34326151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peter Melcher, Dirk Zajonz, Andreas Roth, Christoph-E Heyde, Mohamed Ghanem
{"title":"Peer-assisted teaching student tutors as examiners in an orthopedic surgery OSCE station - pros and cons.","authors":"Peter Melcher, Dirk Zajonz, Andreas Roth, Christoph-E Heyde, Mohamed Ghanem","doi":"10.3205/iprs000096","DOIUrl":"https://doi.org/10.3205/iprs000096","url":null,"abstract":"<p><strong>Background: </strong>The OSCE (objective structured clinical examination) is composed of oral and practical examination in order to examine students' abilities to imply clinical examination techniques and to interact with patients. The examiners for this procedure can be either lecturers or peers. The aim of this work is to evaluate the peer-assisted teaching student tutors as examiners in an orthopedic surgery OSCE station.</p><p><strong>Methods: </strong>We analyzed the OSCE data from 2013 to 2015. During this period over 300 medical students were examined each year. An evaluation was conducted at an orthopedic station and examined by peer students to assess the advantages and disadvantages of peer-assisted teaching student tutors as examiners.</p><p><strong>Results: </strong>We have noticed that student peers are more flexible regarding their schedule and they have been well trained for OSCE. Concerning the economic aspects, student peers are clearly of major economic advantage. Disadvantages were not reported in our study probably because peers were well trained and the checklists are monitored regularly.</p><p><strong>Conclusion: </strong>Student peers in OSCE are of major advantage due to their flexible time schedule and relatively low costs. They must be well trained and the checklists are to be monitored regularly. Our study shows that peer tutor examiners conducted the examination as competent as lecture examiners. However, legal restrictions on the employment of students should be considered.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc17"},"PeriodicalIF":0.4,"publicationDate":"2016-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3205/iprs000096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34737553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reinhard E Friedrich, Liska Viezens, Ulrich Grzyska
{"title":"Pneumatization of the zygomatic process of temporal bone on computed tomograms.","authors":"Reinhard E Friedrich, Liska Viezens, Ulrich Grzyska","doi":"10.3205/iprs000095","DOIUrl":"10.3205/iprs000095","url":null,"abstract":"<p><strong>Purpose: </strong>Zygomatic air cells (ZAC) are a variant of temporal bone pneumatization that needs no treatment. However, ZAC can have an impact on surgical procedures in the temporo-mandibular joint region. Recent reports suggest that computed tomography will disclose more ZAC than can be diagnosed on panoramic radiography. The aim of this study was to analyze ZAC prevalence on CT in a population that was not pre-selected by admission to a dental clinic. Furthermore, an extensive literature review was performed to assess the prevalence of ZAC and to address the impact of imaging technique on the definition of the item.</p><p><strong>Material and methods: </strong>Digitalized cranial CTs of 2007 patients were retrospectively analyzed. The Frankfort horizontal was used to define a ZAC on sagittal CTs.</p><p><strong>Results: </strong>In this study group, 806 were female (40.16%) and 1,201 were male (59.84%). Mean age was 49.96 years in the whole group (female: 55.83 years, male: 46.01 years). A ZAC was diagnosed in 152 patients (female: 66, male: 86). Unilateral ZAC surpasses bilateral findings (115 vs. 37 patients). ZAC were diagnosed in children 5 years of age and older. Sectional imaging techniques show a better visualization of the region of interest. However, presently an increase of ZAC prevalence attributable to imaging technique cannot conclusively be derived from the current literature. The normal finding of a ZAC on radiograms is a sharply defined homogenous transparent lesion restricted to the zygomatic process of the temporal bone that has no volume effect on the shape of the process.</p><p><strong>Conclusion: </strong>ZAC is an anatomical variant of the temporal bone that has come into focus of maxillofacial radiology due to its noticeable aspect on panoramic radiograms. The harmless variant can be expected in about one in thirteen individuals undergoing facial radiology. Panoramic radiograms appear to be sufficient to present ZAC of relevant size. However, in preparation for surgical procedures affecting the articular eminence the application of sectional images is recommended.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc16"},"PeriodicalIF":0.4,"publicationDate":"2016-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908274/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34504638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Accuracy of computer-assisted implant placement with insertion templates.","authors":"Eleni Naziri, Alexander Schramm, Frank Wilde","doi":"10.3205/iprs000094","DOIUrl":"https://doi.org/10.3205/iprs000094","url":null,"abstract":"<p><strong>Objectives: </strong>The purpose of this study was to assess the accuracy of computer-assisted implant insertion based on computed tomography and template-guided implant placement.</p><p><strong>Material and methods: </strong>A total of 246 implants were placed with the aid of 3D-based transfer templates in 181 consecutive partially edentulous patients. Five groups were formed on the basis of different implant systems, surgical protocols and guide sleeves. After virtual implant planning with the CoDiagnostiX Software, surgical guides were fabricated in a dental laboratory. After implant insertion, the actual implant position was registered intraoperatively and transferred to a model cast. Deviations between the preoperative plan and postoperative implant position were measured in a follow-up computed tomography of the patient's model casts and image fusion with the preoperative computed tomography.</p><p><strong>Results: </strong>The median deviation between preoperative plan and postoperative implant position was 1.0 mm at the implant shoulder and 1.4 mm at the implant apex. The median angular deviation was 3.6º. There were significantly smaller angular deviations (P=0.000) and significantly lower deviations at the apex (P=0.008) in implants placed for a single-tooth restoration than in those placed at a free-end dental arch. The location of the implant, whether in the upper or lower jaw, did not significantly affect deviations. Increasing implant length had a significant negative influence on deviations from the planned implant position. There was only one significant difference between two out of the five implant systems used.</p><p><strong>Conclusion: </strong>The data of this clinical study demonstrate the accuracy and predictable implant placement when using laboratory-fabricated surgical guides based on computed tomography.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc15"},"PeriodicalIF":0.4,"publicationDate":"2016-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3205/iprs000094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34620268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Davis flap: the glory still present.","authors":"Ahmed Hassan El-Sabbagh","doi":"10.3205/iprs000093","DOIUrl":"https://doi.org/10.3205/iprs000093","url":null,"abstract":"<p><strong>Background: </strong>Upper third defects of the ear are too large to be closed primarily without distorting the auricle. Full thickness defects can be reconstructed with local flaps. In this article, Davis flap was used to fill the upper third defects of the ear with some modifications.</p><p><strong>Patients and methods: </strong>Eight patients underwent reconstruction of full thickness auricular defects with Davis flaps from July 2012 to December 2014. The posterior surface of the flap and the raw area of conchal area were covered by full thickness graft taken from posterior surface of ear.</p><p><strong>Results: </strong>All flaps survived. No congestion was noted. The donor sites and skin grafts healed uneventfully.</p><p><strong>Conclusion: </strong>Davis flap is a simple and reproducible tool for reconstruction of upper third of ear.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc14"},"PeriodicalIF":0.4,"publicationDate":"2016-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3205/iprs000093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34620267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed Ghanem, Almuth Glase, Dirk Zajonz, Andreas Roth, Christoph-E Heyde, Christoph Josten, Georg von Salis-Soglio
{"title":"Bipolar hip arthroplasty as salvage treatment for loosening of the acetabular cup with significant bone defects.","authors":"Mohamed Ghanem, Almuth Glase, Dirk Zajonz, Andreas Roth, Christoph-E Heyde, Christoph Josten, Georg von Salis-Soglio","doi":"10.3205/iprs000092","DOIUrl":"https://doi.org/10.3205/iprs000092","url":null,"abstract":"<p><strong>Introduction: </strong>Revision arthroplasty of the hip is becoming increasingly important in recent years. Early primary arthroplasty and longer life expectancy of the patients increases the number of revision surgery. Revision surgery of hip arthroplasty is major surgery for the patients, especially the elderly, with significant risks concerning the general condition of the patient. The aim of this work is to evaluate the outcome of bipolar hip arthroplasty as a salvage procedure for treatment of loosening of the acetabular cup with significant acetabular bone defects after total hip replacement (THR) in multi-morbid patients.</p><p><strong>Patients and methods: </strong>During the period from January 1(st) 2007 to December 31(st) 2011 19 revision hip surgeries were performed in 19 patients, in which the loosened acetabular cup was replaced by a bipolar head. The examined patient group consisted exclusively of female patients with an average of 75 years. The predominant diagnosis was \"aseptic loosening\" (84.2%). All patients in our study were multi-morbid. We decided to resort to bipolar hip arthroplasty due to the compromised general condition of patients and the major acetabular bone defects, which were confirmed intraoperatively. The postoperative follow-up ranged from 0.5 to 67 months (average 19.1 months).</p><p><strong>Results: </strong>Evaluation of the modified Harris Hip Score showed an overall improvement of the function of the hip joint after surgery of approximately 45%. Surgery was less time consuming and thus adequate for patients with significantly poor general health condition. We noticed different complications in a significant amount of patients (68.4%). The most common complication encountered was the proximal migration of the bipolar head. The rate of revision following the use of bipolar hip arthroplasty in revision surgery of the hip in our patients was high (21%). Despite the high number of complications reported in our study, we have noticed significant improvement of hip joint function as well as subjective pain relief in the majority of patients. We clearly achieved clinically satisfactory results in 14 patients.</p><p><strong>Conclusion: </strong>Bipolar hip arthroplasty is by no means to be regarded as standard procedure in revision surgery of THR. It provides an option or salvage procedure for patients with poor general condition in whom the quickest possible surgical intervention preserving mobility is required. This is particularly true for multi-morbid patients in whom sufficient acetabular fixation is not possible.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc13"},"PeriodicalIF":0.4,"publicationDate":"2016-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3205/iprs000092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34430564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed Ghanem, Dirk Zajonz, Juliane Bollmann, Vanessa Geissler, Torsten Prietzel, Michael Moche, Andreas Roth, Christoph-E Heyde, Christoph Josten
{"title":"Outcome of total knee replacement following explantation and cemented spacer therapy.","authors":"Mohamed Ghanem, Dirk Zajonz, Juliane Bollmann, Vanessa Geissler, Torsten Prietzel, Michael Moche, Andreas Roth, Christoph-E Heyde, Christoph Josten","doi":"10.3205/iprs000091","DOIUrl":"https://doi.org/10.3205/iprs000091","url":null,"abstract":"<p><strong>Background: </strong>Infection after total knee replacement (TKR) is one of the serious complications which must be pursued with a very effective therapeutic concept. In most cases this means revision arthroplasty, in which one-setting and two-setting procedures are distinguished. Healing of infection is the conditio sine qua non for re-implantation. This retrospective work presents an assessment of the success rate after a two-setting revision arthroplasty of the knee following periprosthetic infection. It further considers drawing conclusions concerning the optimal timing of re-implantation.</p><p><strong>Patients and methods: </strong>A total of 34 patients have been enclosed in this study from September 2005 to December 2013. 35 re-implantations were carried out following explantation of total knee and implantation of cemented spacer. The patient's group comprised of 53% (18) males and 47% (16) females. The average age at re-implantation time was 72.2 years (ranging from 54 to 85 years). We particularly evaluated the microbial spectrum, the interval between explantation and re-implantation, the number of surgeries that were necessary prior to re-implantation as well as the postoperative course.</p><p><strong>Results: </strong>We reported 31.4% (11) reinfections following re-implantation surgeries. The number of the reinfections declined with increasing time interval between explantation and re-implantation. Patients who developed reinfections were operated on (re-implantation) after an average of 4.47 months. Those patients with uncomplicated course were operated on (re-implantation) after an average of 6.79 months. Nevertheless, we noticed no essential differences in outcome with regard to the number of surgeries carried out prior to re-implantation. Mobile spacers proved better outcome than temporary arthrodesis with intramedullary fixation.</p><p><strong>Conclusion: </strong>No uniform strategy of treatment exists after peri-prosthetic infections. In particular, no optimal timing can be stated concerning re-implantation. Our data point out to the fact that a longer time interval between explantation and re-implantation reduces the rate of reinfection. From our point of view, the optimal timing for re-implantation depends on various specific factors and therefore it should be defined individually.</p>","PeriodicalId":43347,"journal":{"name":"GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW","volume":"5 ","pages":"Doc12"},"PeriodicalIF":0.4,"publicationDate":"2016-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4811200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34755415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}