Balcarek, Peter

[["dc.bibliographiccitation.firstpage","673"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Knee Surgery Sports Traumatology Arthroscopy"],["dc.bibliographiccitation.lastpage","680"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Kuhn, Anke"],["dc.contributor.author","Weigel, Arwed"],["dc.contributor.author","Walde, Tim Alexander"],["dc.contributor.author","Ferlemann, Keno G."],["dc.contributor.author","Stuermer, Klaus-Michael"],["dc.contributor.author","Frosch, Karl-Heinz"],["dc.date.accessioned","2018-11-07T08:43:40Z"],["dc.date.available","2018-11-07T08:43:40Z"],["dc.date.issued","2010"],["dc.description.abstract","The purpose of this study was to analyze the impact of monopolar radiofrequency energy treatment on subchondral bone viability. The femoral grooves of six chinchilla bastard rabbits were exposed bilaterally to monopolar radiofrequency energy for 2, 4 and 8 s, creating a total of 36 defects. An intravital fluorescence bone-labeling technique characterized the process of subchondral bone mineralization within the 3 months following exposure to radiofrequency energy and was analyzed by widefield epifluorescence optical sectioning microscopy using an ApoTome. After 2 s of radiofrequency energy exposure, regular fluorescence staining of the subchondral bone was evident in all samples when compared to untreated areas. The depth of osteonecrosis after 4 and 8 s of radiofrequency energy treatment averaged 126 and 942 A mu m at 22 days (P < .05; P < .01). The 4 s treatment group showed no osteonecrosis after 44 days whereas the depth of osteonecrosis extended from 519 A mu m at 44 days (P < .01), to 281 A mu m at 66 days (P < .01) and to 133 A mu m at 88 days (P < .05) after 8 s of radiofrequency energy application. Though radiofrequency energy may induce transient osteonecrosis in the superficial zone of the subchondral bone, the results of this study suggest that post-arthroscopic osteonecrosis appears to be of only modest risk given the current clinical application in humans."],["dc.identifier.doi","10.1007/s00167-009-0949-z"],["dc.identifier.isi","000276722900019"],["dc.identifier.pmid","19838673"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4232"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20025"],["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","Impact of monopolar radiofrequency energy on subchondral bone viability"],["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","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","1756"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","The American journal of sports medicine"],["dc.bibliographiccitation.lastpage","1761"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Balcarek, Peter"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Frosch, Karl-Heinz"],["dc.contributor.author","Stürmer, Klaus Michael"],["dc.date.accessioned","2019-07-09T11:53:48Z"],["dc.date.available","2019-07-09T11:53:48Z"],["dc.date.issued","2011-08-01"],["dc.description.abstract","BACKGROUND: A lateralized tibial tubercle may be a relevant anatomic factor in patients with patellar instability and can be used as an indication for a distal realignment procedure. However, parameter values for the tibial tuberosity-trochlear groove (TT-TG) distance in the young patient have not been defined. It also remains to be determined how this parameter contributes to patellar instability in the growing knee joint. PURPOSE: The purpose of this study was to evaluate the value of the TT-TG distance in patellar instability in the young athlete. STUDY DESIGN: Case control study; Level of evidence, 3. METHODS: Knee magnetic resonance images were collected from 109 patients with lateral patellar instability and from 136 control subjects. Student t test and multiple logistic regression analysis were used to compare the absolute and relative values of the TT-TG distance between patients and controls. The relative value was defined as the ratio between the TT-TG distance and the total width of the distal femur. RESULTS: The TT-TG distance (absolute and relative to femur width) differed significantly between patients with patellar dislocation and the control group (both P < .01). The TT-TG distances were on average 4 mm larger in patients with patellar dislocation; TT-TG distance divided by femur width was on average 5% larger in patients with patellar dislocation. Multiple logistic regression analysis confirmed the TT-TG distance as a significant risk factor for patellar dislocation (P = .04), but showed no significant interaction with patient age or femur width (P = .95 and P = .15, respectively). CONCLUSION: A lateralized tibial tubercle is a relevant anatomic factor in the young athlete and in the adult patient with lateral patellar instability. Its parameter values and its influence on patellar dislocation are independent of patient age and should therefore be evaluated as in adults."],["dc.identifier.doi","10.1177/0363546511404883"],["dc.identifier.fs","578191"],["dc.identifier.pmid","21566067"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8057"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60499"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1552-3365"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.mesh","Adolescent"],["dc.subject.mesh","Adult"],["dc.subject.mesh","Aging"],["dc.subject.mesh","Case-Control Studies"],["dc.subject.mesh","Child"],["dc.subject.mesh","Female"],["dc.subject.mesh","Humans"],["dc.subject.mesh","Joint Instability"],["dc.subject.mesh","Male"],["dc.subject.mesh","Middle Aged"],["dc.subject.mesh","Patellar Dislocation"],["dc.subject.mesh","Patellofemoral Joint"],["dc.subject.mesh","Tibia"],["dc.subject.mesh","Young Adult"],["dc.title","Value of the tibial tuberosity-trochlear groove distance in patellar instability in the young athlete."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]