TY - JOUR AU - Pennig, D AU - Brug, E DO - doi:10.1302/0301-620X.72B5.2211777 UR - https://doi.org/10.1302/0301-620X.72B5.2211777 TI - A target device for placement of implants in the thoracolumbar pedicles T2 - The Journal of Bone & Joint Surgery British Volume VL - 72-B IS - 5 PY - 1990 SP - 886 EP - 888 ER -