[Reconstruction of fractures of the anterior wall and the anterior column of the acetabulum using an ilioinguinal approach].

Objective: Restoration of the congruence of the hip joint. Correction of gaps or steps in the articular surface, especially in the main weight-bearing area of the acetabular dome. Correction of femoral head subluxation.

[Patella fracture].

Objective: Reconstruction of the extensor apparatus of the knee joint. Open reduction and stable internal fixation of patella fractures. Exact reconstruction of the articular surface of the patellofemoral joint.

Double or triple interlocking when nailing proximal tibial fractures? A biomechanical investigation.

Objectives: To determine whether there are differences in stability between double and triple interlocked intramedullary nails used for the fixation of extraarticular proximal tibial fractures.

Design: Randomized in vitro biomechanical-experimental laboratory investigation.

Setting: Biomechanics laboratory of the Clinic for Trauma Surgery at the Johannes Gutenberg-University Mainz.

Extracorporeal shock wave-mediated changes in proliferation, differentiation, and gene expression of human osteoblasts.

Background: The goal of this study was to determine whether cell proliferation, differentiation, and gene expression of primary human osteoblasts (hOB) are influenced by shock wave application (SWA).

Methods: Osteoblast cultures were isolated from cancellous bone fragments and treated with 500 impulses of energy flux densities of 0.06 mJ/mm, 0.

[Transosseous repair of patellar tendon ruptures].

Objective: Restoration of active knee extension. Restoration of active knee stabilization. Avoiding secondary patella alta.

Intramedullary stabilization of extraarticular proximal tibial fractures: a biomechanical comparison of intramedullary and extramedullary implants including a new proximal tibia nail (PTN).

Objectives: To determine in the laboratory whether there are or are not differences between individual geometrical designs of intramedullary and extramedullary devices used for the fixation of extraarticular proximal tibial fractures.

Methods: Five devices were tested: a newly developed Proximal Tibia Nail (PTN), conventional double-plate osteosynthesis (DPO), the Less Invasive Stabilization System (LISS), an augmented Unreamed Tibial Nail with a T-stabilization-plate (UTN + TSP), and an external fixator (ExFix). A 10-mm defect osteotomy was performed on paired human tibiae, and the proximal and distal ends were potted in polymethylmethacrylate cement (PMMA).

Locked plate fixation and intramedullary nailing for proximal humerus fractures: a biomechanical evaluation.

Background: Internal fixation of proximal humeral fractures is associated with a considerable secondary malalignment rate. Fixed-angle implants have been suggested to increase the stability of fixation.

Methods: The biomechanical properties of four different implants were tested.