TY - JOUR AU - Sandmann, Gunther AU - Ateschrang, Atesch AU - Freude, Thomas AU - Stöckle, Ulrich AU - Schmölz, Werner AU - Konrads, Christian AU - Döbele, Stefan PY - 2020 DA - 2020/10/12 TI - Dynamic locking screws in proximal humeral plate osteosynthesis demonstrate superior fixation properties: a biomechanical study JO - Journal of Experimental Orthopaedics SP - 82 VL - 7 IS - 1 AB - Angular stable implants reduced the complication rate in the treatment of humeral head fractures. But the failure rate is still high. To further reduce the risk of cut-out, cement augmentation of screws was introduced. A reason for failure of plate osteosynthesis might be the extremely high stiffness of the screw-plate interface leading to a loss of reduction and cut-out of screws. A more homogeneous distribution of the forces on all screws may avoid secondary dislocation. We hypothesize that dynamic osteosynthesis minimizes screw loosening and results in a higher load to failure than standard locking screws. SN - 2197-1153 UR - https://doi.org/10.1186/s40634-020-00293-z DO - 10.1186/s40634-020-00293-z ID - Sandmann2020 ER -