List of original publications

This thesis is based on the following articles referred to in the text by their Roman numerals:

I Karppinen J, Malmivaara A, Tervonen O, Pääkkö E, Kurunlahti M, Syrjälä P, Vasari P & Vanharanta H (2001) Severity of symptoms and signs in relation to magnetic resonance imaging finding among sciatic patients. Spine 26: E149-153.

II Karppinen J, Pääkkö E, Räinä S, Tervonen O, Kurunlahti M, Nieminen P, Malmivaara A, Ala-Kokko L & Vanharanta H. Magnetic Resonance Imaging findings in relation to the COL9A2 tryptophan allele among sciatic patients. Spine In Press.

III Karppinen J, Pääkkö E, Paassilta P, Lohiniva J, Kurunlahti M, Tervonen O, Nieminen P, Malmivaara A, Vanharanta H & Ala-Kokko L. Importance of MRI in phenotypic evaluation of lumbar disc disease. Association between thoracolumbar Scheuermann’s disease and COL9A3 tryptophan allele. Submitted for publication.

IV Karppinen J, Malmivaara A, Kurunlahti M, Kyllönen E, Pienimäki T, Nieminen P, Ohinmaa A, Tervonen O & Vanharanta H (2001) Periradicular infiltration for sciatica. A randomized controlled trial. Spine 26:1059-1067

V Karppinen J, Ohinmaa A, Malmivaara A, Kurunlahti M, Kyllönen E, Pienimäki T, Nieminen P, Tervonen O & Vanharanta H. Cost-effectiveness of periradicular infiltration for sciatica. Subgroup analysis of a randomized controlled trial. Spine In Press.