Wachowski, Martin Michael

[["dc.bibliographiccitation.firstpage","2251"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Knee Surgery Sports Traumatology Arthroscopy"],["dc.bibliographiccitation.lastpage","2256"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Frosch, Stephan"],["dc.contributor.author","Rittstieg, Anne"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Walde, Tim Alexander"],["dc.contributor.author","Schuettrumpf, Jan Philipp"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.contributor.author","Stuermer, Klaus-Michael"],["dc.contributor.author","Frosch, Karl-Heinz"],["dc.date.accessioned","2018-11-07T09:04:12Z"],["dc.date.available","2018-11-07T09:04:12Z"],["dc.date.issued","2012"],["dc.description.abstract","The aim of this study was to evaluate the clinical outcome and differences in anterior-posterior laxity of ACL reconstruction using a bioabsorbable interference screw for femoral graft fixation when compared to femoral bioabsorbable cross pin fixation. Clinical outcome was evaluated among 59 patients 1 year after arthroscopic ACL reconstruction with hamstrings graft in a prospective, non-randomised study. In 31 cases, femoral fixation of the graft was performed using a bioabsorbable interference screw. In 28 cases, two bioabsorbable cross pins were used for femoral fixation. Patients were evaluated using Tegner, Lysholm and Marshall scores, the visual analogue scale for pain and KT-1000 arthrometer measurement. No significant difference (P a parts per thousand yen 0.05) was observed at follow-up for the knee scores. The average Tegner score was 5.83 points (+/- 2.00) for the interference screw fixation and 5.83 points (+/- 1.24) for the cross pin fixation; the average Lysholm score was 93.58 (+/- 5.79) to 92.72 (+/- 6.34) points; and the average Marshall score 46.72 (+/- 2.4) to 47.30 (+/- 2.35) points. No significant difference was found for the visual analogue scale for pain. KT-1000 arthrometer measurement revealed a significant (P < 0.05) difference in the mean side-to-side anterior translation at all applied forces. At 67 N, the mean difference was 1.53 mm (+/- 1.24) in the interference screw group and 0.47 mm (+/- 1.18) in the cross pin group (P < 0.05). At 89 N, the mean differences were 1.85 mm (+/- 1.29) versus 0.59 mm (+/- 1.59), respectively, (P < 0.05), and maximum manual displacements were 2.02 mm (+/- 1.26) versus 1.22 mm (1.18; P < 0.05). In ACL reconstruction with hamstrings graft, similar clinical results are obtained for the use of bioabsorbable cross pins when compared to bioabsorbable interference screws for femoral fixation. Cross pin fixation was superior with regard to the anteroposterior laxity as measured with KT-1000."],["dc.identifier.doi","10.1007/s00167-011-1875-4"],["dc.identifier.isi","000310223100018"],["dc.identifier.pmid","22290125"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8788"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25063"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0942-2056"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Bioabsorbable interference screw versus bioabsorbable cross pins: influence of femoral graft fixation on the clinical outcome after ACL reconstruction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2155"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Knee Surgery Sports Traumatology Arthroscopy"],["dc.bibliographiccitation.lastpage","2163"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Terwey, Annika"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Walde, Tim Alexander"],["dc.contributor.author","Frosch, Stephan"],["dc.contributor.author","Schuettrumpf, Jan Philipp"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.contributor.author","Dathe, Henning"],["dc.contributor.author","Sturmer, Klaus Michael"],["dc.date.accessioned","2018-11-07T09:20:52Z"],["dc.date.available","2018-11-07T09:20:52Z"],["dc.date.issued","2013"],["dc.description.abstract","The geometry of the tibial plateau and its influence on the biomechanics of the tibiofemoral joint has gained increased significance. However, no quantitative data are available regarding the inclination of the medial and lateral tibial slope in patients with patellar instability. It was therefore the purpose of this study to evaluate tibial slope characteristics in patients with patellar dislocations and to assess the biomechanical effect of medial-to-lateral tibial slope asymmetry on lateral patellar instability. Medial and lateral tibial slope was measured on knee magnetic resonance images in 107 patients and in 83 controls. The medial-to-lateral tibial slope asymmetry was assessed as the intra-individual difference between the medial and lateral tibial plateau inclination considering severity of trochlear dysplasia. The effect of tibial slope asymmetry on femoral rotation was calculated by means of radian measure. Severity of trochlear dysplasia was significantly associated with an asymmetric inclination of the tibial plateau. Whereas the medial tibial slope showed identical values between controls and study patients (n.s.), lateral tibial plateau inclination becomes flatter with increasing severity of trochlear dysplasia (p < 0.01). Consequently, the intra-individual tibial slope asymmetry increased steadily (p < 0.01) and increased internal femoral rotation in 20A degrees and 90A degrees of knee flexion angles in patients with severe trochlear dysplasia (p < 0.01). In addition, the extreme values of internal femoral rotation were more pronounced in patients with patellar instability, whereas the extreme values of external femoral rotation were more pronounced in control subjects (p = 0.024). Data of this study indicate an association between tibial plateau configuration and internal femoral rotation in patients with lateral patellar instability and underlying trochlear dysplasia. Thereby, medial-to-lateral tibial slope asymmetry increased internal femoral rotation during knee flexion and therefore might aggravate the effect of femoral antetorsion in patients with patellar instability. III."],["dc.identifier.doi","10.1007/s00167-012-2247-4"],["dc.identifier.isi","000323502400031"],["dc.identifier.pmid","23096490"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10282"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28973"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0942-2056"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Influence of tibial slope asymmetry on femoral rotation in patients with lateral patellar instability"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1575"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Knee Surgery, Sports Traumatology, Arthroscopy"],["dc.bibliographiccitation.lastpage","1580"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Walde, Tim A."],["dc.contributor.author","Frosch, Stephan"],["dc.contributor.author","Schüttrumpf, Jan"],["dc.contributor.author","Wachowski, Martin M."],["dc.contributor.author","Stürmer, Klaus"],["dc.date.accessioned","2019-07-09T11:53:49Z"],["dc.date.available","2019-07-09T11:53:49Z"],["dc.date.issued","2011"],["dc.description.abstract","The purpose of this study was to investigate whether the femoral part of the medial patellofemoral ligament (MPFL) and its injury can be accurately assessed by standard knee arthroscopy in first-time patellar dislocations or whether preoperative MRI is required to determine injury location in patients where primary MPFL repair is attempted.Twelve patients with acute first-time dislocations and MRI-based injury of the femoral MPFL and ten patients with recurrent patellar dislocations underwent knee arthroscopy with the use of a 30-degree optic and standard antero-medial and antero-lateral portals. The femoral origin was marked with a cannula under lateral fluoroscopy. Arthroscopic findings of the location of the native femoral MPFL and its injury were compared to the results of MRI and mini-open exploration.In acute cases, the average time from primary patellar dislocation to MRI evaluation was 3 days (1–9 days), and the average time from MRI to surgery was 8 days (3–20 days). The native femoral origin of the MPFL was not visible in any of the chronic cases during arthroscopy. In addition, in all acute cases, arthroscopy failed to directly visualize injury of the femoral MPFL (0 of 12), but mini-open exploration confirmed injury in 11 of 12 patients. This means that arthroscopy was less accurate than MRI for the diagnosis of femoral MPFL injury (P < 0.05).The results of this study indicate the limitations of knee arthroscopy in identifying the femoral disruption of the MPFL, a crucial injury that occurs in patellar dislocations. Thus, if a primary MPFL repair is planned, determination of the site of repair should be based on the preoperative MRI.Diagnostic study of non-consecutive patients, Level III."],["dc.identifier.doi","10.1007/s00167-011-1775-7"],["dc.identifier.fs","583699"],["dc.identifier.pmid","22095485"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8080"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60504"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Springer"],["dc.publisher.place","Berlin/Heidelberg"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","MRI but not arthroscopy accurately diagnoses femoral MPFL injury in first-time patellar dislocations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","160"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The Open Orthopaedics Journal"],["dc.bibliographiccitation.lastpage","163"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","P. Schüttrumpf, Jan"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Sehmisch, Stephan"],["dc.contributor.author","Frosch, Stephan"],["dc.contributor.author","Wachowski, Martin M."],["dc.contributor.author","Stürmer, Klaus M."],["dc.contributor.author","Walde, Hans-Joachim"],["dc.contributor.author","Walde, Tim A."],["dc.date.accessioned","2019-07-09T11:53:26Z"],["dc.date.available","2019-07-09T11:53:26Z"],["dc.date.issued","2012"],["dc.description.abstract","Purpose: The objective of this prospective study was to evaluate the medium-term clinical and radiological results after navigated cementless implantation, without patella resurfacing, of a total knee endoprosthesis with tibial and femoral press-fit components, with a focus on survival rate and clinical outcome. The innovation is the non-cemented fixation together with the use of a navigation system. Scope and Methods: Sixty patients with gonarthrosis were included consecutively in this study. In all cases, the cementless Columbus total knee endoprosthesis with a coating out of pure titanium was implanted, using a navigation system. The Knee Society Score showed a statistically significant increase from 75 (± 21.26) before surgery to 180 (± 16.15) after a mean follow-up of 5.6 (± 0.25) years. The last radiological examination revealed no osteolysis. No radiolucent lines were seen at any time in the area of the femoral prosthetic components. In the tibial area, radiolucent lines were seen in 24.4 % of the cases, mostly in the distal uncoated part of the stem. During follow-up, no prosthesis had to be replaced because of aseptic loosening while in 2 cases revision surgery was necessary due to septic loosening and in 1 case due to unexplainable pain. Results and Conclusions: Navigated cementless implantation of the Columbus total knee endoprosthesis yielded good clinical and radiological results in the medium term. The excellent radiological osteointegration of the prosthetic components, coated with a microporous pure titanium layer and implanted with a press-fit technique, should be emphasized."],["dc.identifier.doi","10.2174/1874325001206010160"],["dc.identifier.fs","585932"],["dc.identifier.pmid","22550552"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7573"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60425"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Navigated Cementless Total Knee Arthroplasty - Medium-Term Clinical and Radiological Results"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]