2014
- Supervision of the doctoral thesis (Philip Bastians) on the significance of the posterior median vertebral crest (Crista vertebralis mediana posterior) as a supporting structure of the midline membrane in lumbar disc herniation surgery.
2012
- Anatomical-radiological morphometric study of the anterior lumbar epidural space.
- Anatomical retrospective study (4 anatomical scoliosis specimens) on microsurgical nerve decompression in scoliosis.
2009
- Prospective randomized double-blind study (57 patients) on epidural injection treatment using local anesthetic versus corticosteroids in chronic lumbar nerve root compression syndrome.
- Anatomical-microscopic study (11 anatomical specimens) on the needle insertion angle in epidural-perineural injections of the lumbar spine.
2008
- Multicenter observational study (843 patients) on the efficacy of prolonged-release oxycodone in patients with movement-related pain.
- Supervision of the doctoral thesis (Redouane Boudelal) on the topography of lumbar nerve roots in relation to intervertebral discs.
- Supervision of the doctoral thesis (Ammar Ali) on microsurgical nerve decompression in scoliosis.
2006
- Head of a clinical study (56 patients) on cardiovascular reactions to cervical nerve root injections.
- Clinical study (59 patients) on signal changes of vertebral endplates in MRI and their relationship to minimally invasive injection therapy for lumbar disc herniations.
2005
- Head of a clinical study (117 patients) on the effects of lumbar spinal nerve analgesia on the cardiovascular system.
- Postoperative outcomes (550 patients) following microsurgical decompression surgery of the lumbar spine (follow-up: 3 years).
2004
- Head of a surgical study on the characteristics of selective microsurgical nerve root decompression in lumbar spinal stenosis versus laminectomy.
- Head of a surgical study (98 patients) on residual blood drainage volume following microsurgical spinal surgery.
2003
- Observational application study (6797 patients) on the treatment of chronic orthopedic, non-tumor-related pain using transdermal fentanyl patches.
- Prospective randomized study (243 patients) on pain treatment in osteoarthritis using transdermal fentanyl patches.