Wolf Petersen

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BACKGROUND A rupture of the entire fibers of the anterior cruciate ligament leads to knee instability due to increased anterior tibial translation and increased internal tibial rotation. The influence of isolated deficiency of the anteromedial or posterolateral bundle of the anterior cruciate ligament on the resulting knee kinematics have not yet been(More)
BACKGROUND The interest in double-bundle anterior cruciate ligament (ACL) reconstructions has recently reawakened. HYPOTHESIS The center of the femoral posterolateral (PL) bundle and the center of the femoral anteromedial (AM) bundle are not within the same plane and change their orientation throughout passive knee flexion. Additionally, the tibial center(More)
The anterior cruciate ligament (ACL) consists of two major fiber bundles, namely the anteromedial and posterolateral bundle. When the knee is extended, the posterolateral bundle (PL) is tight and the anteromedial (AM) bundle is moderately lax. As the knee is flexed, the femoral attachment of the ACL becomes a more horizontal orientation; causing the AM(More)
The aim of this study was to determine the anterolateral rotational instability (ALRI) of the human knee after rupture of the anterior cruciate ligament (ACL) and after additional injury of the different components of the posterolateral structures (PLS). It was hypothesized that a transsection of the ACL will significantly increase the ALRI of the knee and(More)
Thirty-five patients with severe osteochondral defects were treated by autologous osteochondral transplantation between 1986 and 1992. The majority of patients (27) suffered from osteochondrosis dissecans, while 8 patients presented with posttraumatic osteochondral defects. The grafts were harvested with a diamond bone cutter from the posterior part of the(More)
 Anatomical and clinical literature describes the arrangement of collagen fibrils in the human meniscus as being ”arcade-like”. The ”arcade-like” orientation, mainly running in a radial direction in the internal circumference and in a circular direction in the external circumference, was found in polarization light microscopic studies. This, however, does(More)
Anterior knee pain is one of the most common causes of persistent problems after implantation of a total knee replacement. It can occur in patients with or without patellar resurfacing. As a result of the surgical procedure itself many changes can occur which may affect the delicate interplay of the joint partners in the patello-femoral joint. Functional(More)
An avulsion of the posterior tibial insertion of the meniscus (root tear) is a rare clinical diagnosis. Yet, due to the inconsistent clinical symptoms and the difficult arthroscopic assessment, an injury to the root of the meniscus can be easily missed. We present a possible technique for arthroscopic management of root tears using a tibial tunnel approach.(More)
BACKGROUND This research was undertaken to determine whether there is a need for a second tibial tunnel in anatomic anterior cruciate ligament reconstruction. HYPOTHESIS Anatomic two-bundle reconstruction with two tibial tunnels restores knee anterior tibial translation in response to 134 N and to 5-N.m internal tibial torque combined with 10-N.m valgus(More)
BACKGROUND Tibial eminence fractures have become more common, but the best method of fixing these fractures arthroscopically has not been elucidated. OBJECTIVE The objective of this study is to assess the stability of different fixation methods for tibial eminence fractures. STUDY DESIGN Controlled laboratory study. METHODS The authors evaluated the(More)