H. Halm

Pullout strength of pedicle screws versus pedicle and laminar hooks in the thoracic spine.

L. Hackenberg, Thomas M. Link, Ulf Liljenqvist, 2001, Acta orthopaedica Belgica.

Segmental pedicle screw instrumentation in idiopathic thoracolumbar and lumbar scoliosis

U. Liljenqvist, H. Halm, T. Niemeyer, 2000, European Spine Journal.

Sagittal plane correction in "King-classified" idiopathic scoliosis patients treated with Cotrel-Dubousset instrumentation.

W. Winkelmann, W. Castro, H. Halm, 1995, Acta orthopaedica Belgica.

Halm-Zielke instrumentation for primary stable anterior scoliosis surgery: operative technique and 2-year results in ten consecutive adolescent idiopathic scoliosis patients within a prospective clinical trial

U. Liljenqvist, W. Winkelmann, H. Halm, 1998, European Spine Journal.