TY - JOUR AU - Seitsalo, S DO - doi:10.1302/0301-620X.72B5.2211782 UR - https://doi.org/10.1302/0301-620X.72B5.2211782 TI - Operative and conservative treatment of moderate spondylolisthesis in young patients T2 - The Journal of Bone & Joint Surgery British Volume VL - 72-B IS - 5 PY - 1990 SP - 908 EP - 913 ER -