Publications 2024

Mjåset C, Solberg TK, Zwart JA, Småstuen MC, Kolstad F, Grotle M (2024)
Correction to: Anterior surgical treatment for cervical degenerative radiculopathy: a prediction model for non‑success
Acta Neurochir (Wien), 166 (1), 149
DOI 10.1007/s00701-024-06045-7, PubMed 38526633

Mjåset C, Zwart JA, Kolstad F, Solberg T, Grotle M (2024)
Correction: Clinical improvement after surgery for degenerative cervical myelopathy; A comparison of Patient-Reported Outcome Measures during 12-month follow-up
PLoS One, 19 (3), e0300610
DOI 10.1371/journal.pone.0300610, PubMed 38466707

Publications 2023

Mikkelsen E, Ingebrigtsen T, Thyrhaug AM, Olsen LR, Nygaard ØP, Austevoll I, Brox JI, Hellum C, Kolstad F, Lønne G, Solberg TK (2023)
The Norwegian registry for spine surgery (NORspine): cohort profile
Eur Spine J, 32 (11), 3713-3730
DOI 10.1007/s00586-023-07929-5, PubMed 37718341

Riksaasen AS, Kaur S, Solberg TK, Austevoll I, Brox JI, Dolatowski FC, Hellum C, Kolstad F, Lonne G, Nygaard ØP, Ingebrigtsen T (2023)
Impact of the number of previous lumbar operations on patient-reported outcomes after surgery for lumbar spinal stenosis or lumbar disc herniation
Bone Joint J, 105-B (4), 422-430
DOI 10.1302/0301-620X.105B4.BJJ-2022-0704.R1, PubMed 36924173

Publications 2022

Ingebrigtsen T, Aune G, Karlsen ME, Gulati S, Kolstad F, Nygaard ØP, Thyrhaug AM, Solberg TK (2022)
Non-respondents do not bias outcome assessment after cervical spine surgery: a multicenter observational study from the Norwegian registry for spine surgery (NORspine)
Acta Neurochir (Wien), 165 (1), 125-133
DOI 10.1007/s00701-022-05453-x, PubMed 36539647

Mjåset C, Solberg TK, Zwart JA, Småstuen MC, Kolstad F, Grotle M (2022)
Anterior surgical treatment for cervical degenerative radiculopathy: a prediction model for non-success
Acta Neurochir (Wien), 165 (1), 145-157
DOI 10.1007/s00701-022-05440-2, PubMed 36481873

Mjåset C, Zwart JA, Kolstad F, Solberg T, Grotle M (2022)
Clinical improvement after surgery for degenerative cervical myelopathy; A comparison of Patient-Reported Outcome Measures during 12-month follow-up
PLoS One, 17 (3), e0264954
DOI 10.1371/journal.pone.0264954, PubMed 35259164

Taso M, Sommernes JH, Bjorland S, Zwart JA, Engebretsen KB, Sundseth J, Pripp AH, Kolstad F, Brox JI (2022)
What is success of treatment? Expected outcome scores in cervical radiculopathy patients were much higher than the previously reported cut-off values for success
Eur Spine J, 31 (10), 2761-2768
DOI 10.1007/s00586-022-07234-7, PubMed 35551484

Publications 2021

Johansen TO, Sundseth J, Fredriksli OA, Andresen H, Zwart JA, Kolstad F, Pripp AH, Gulati S, Nygaard ØP (2021)
Effect of Arthroplasty vs Fusion for Patients With Cervical Radiculopathy: A Randomized Clinical Trial
JAMA Netw Open, 4 (8), e2119606
DOI 10.1001/jamanetworkopen.2021.19606, PubMed 34351401

Publications 2020

Taso M, Sommernes JH, Kolstad F, Sundseth J, Bjorland S, Pripp AH, Zwart JA, Brox JI (2020)
A randomised controlled trial comparing the effectiveness of surgical and nonsurgical treatment for cervical radiculopathy
BMC Musculoskelet Disord, 21 (1), 171
DOI 10.1186/s12891-020-3188-6, PubMed 32178655

Publications 2019

Farmen AH, Marthinsen PB, Sundseth J, Kolstad F, Kerty E, Elsais A (2019)
[A man in his fifties with variable weakness and difficulty in walking]
Tidsskr Nor Laegeforen, 139 (18)
DOI 10.4045/tidsskr.18.0841, PubMed 31823568

Farmen AH, Marthinsen PB, Sundseth J, Kolstad F, Kerty E, Elsais A (2019)
A man in his 50s with varying weakness and walking difficulties
Tidsskr. Nor. Laegeforen., 139 (18), 1778-1781

Publications 2018

Juel BE, Romundstad L, Kolstad F, Storm JF, Larsson PG (2018)
Distinguishing Anesthetized from Awake State in Patients: A New Approach Using One Second Segments of Raw EEG
Front Hum Neurosci, 12, 40
DOI 10.3389/fnhum.2018.00040, PubMed 29515381

Publications 2016

Kristiansen JA, Balteskard L, Slettebø H, Nygaard ØP, Lied B, Kolstad F, Solberg TK (2016)
The use of surgery for cervical degenerative disease in Norway in the period 2008-2014 : A population-based study of 6511 procedures
Acta Neurochir (Wien), 158 (5), 969-74
DOI 10.1007/s00701-016-2760-1, PubMed 26983821

Sundseth J, Fredriksli OA, Kolstad F, Johnsen LG, Pripp AH, Andresen H, Myrseth E, Müller K, Nygaard ØP, Zwart JA, NORCAT study group (2016)
The Norwegian Cervical Arthroplasty Trial (NORCAT): 2-year clinical outcome after single-level cervical arthroplasty versus fusion-a prospective, single-blinded, randomized, controlled multicenter study
Eur Spine J, 26 (4), 1225-1235
DOI 10.1007/s00586-016-4922-5, PubMed 28012081

Sundseth J, Jacobsen EA, Kolstad F, Sletteberg RO, Nygaard OP, Johnsen LG, Pripp AH, Andresen H, Fredriksli OA, Myrseth E, Zwart JA (2016)
Heterotopic ossification and clinical outcome in nonconstrained cervical arthroplasty 2 years after surgery: the Norwegian Cervical Arthroplasty Trial (NORCAT)
Eur Spine J, 25 (7), 2271-8
DOI 10.1007/s00586-016-4549-6, PubMed 27061727

Publications 2015

Halvorsen CM, Rønning P, Hald J, Johannesen TB, Kolstad F, Langmoen IA, Lied B, Skaar Holme S, Helseth E (2015)
The Long-term Outcome After Resection of Intraspinal Nerve Sheath Tumors: Report of 131 Consecutive Cases
Neurosurgery, 77 (4), 585-92; discussion 592-3
DOI 10.1227/NEU.0000000000000890, PubMed 26191976

Kolstad F, Breivik H (2015)
The obesity epidemic makes life difficult for patients with herniated lumbar discs - and for back-surgeons: Increased risk of complications
Scand J Pain, 10, 103
DOI 10.1016/j.sjpain.2015.10.008, PubMed 28361756

Kolstad F, Breivik H (2015)
Outcome of spine surgery: In a clinical field with few randomized controlled studies, a national spine surgery register creates evidence for practice guidelines
Scand J Pain, 6 (1), 7-8
DOI 10.1016/j.sjpain.2014.10.001, PubMed 29911583

Publications 2014

Berg-Johnsen J, Ilstad E, Kolstad F, Züchner M, Sundseth J (2014)
Idiopathic ventral spinal cord herniation: an increasingly recognized cause of thoracic myelopathy
J Cent Nerv Syst Dis, 6, 85-91
DOI 10.4137/JCNSD.S16180, PubMed 25336997

Publications 2013

Sundseth J, Berg-Johnsen J, Skaar-Holme S, Züchner M, Kolstad F (2013)
Atlantoaxial rotatory fixation--a cause of torticollis
Tidsskr Nor Laegeforen, 133 (5), 519-23
DOI 10.4045/tidsskr.11.1540, PubMed 23463063

Sundseth J, Jacobsen EA, Kolstad F, Nygaard OP, Zwart JA, Hol PK (2013)
Magnetic resonance imaging evaluation after implantation of a titanium cervical disc prosthesis: a comparison of 1.5 and 3 Tesla magnet strength
Eur Spine J, 22 (10), 2296-302
DOI 10.1007/s00586-013-2994-z, PubMed 24061966

Publications 2012

Stanišić M, Hald J, Rasmussen IA, Pripp AH, Ivanović J, Kolstad F, Sundseth J, Züchner M, Lindegaard KF (2012)
Volume and densities of chronic subdural haematoma obtained from CT imaging as predictors of postoperative recurrence: a prospective study of 107 operated patients
Acta Neurochir (Wien), 155 (2), 323-33; discussion 333
DOI 10.1007/s00701-012-1565-0, PubMed 23229873

Publications 2010

Halvorsen CM, Kolstad F, Hald J, Johannesen TB, Krossnes BK, Langmoen IA, Lied B, Rønning P, Skaar S, Spetalen S, Helseth E (2010)
Long-term outcome after resection of intraspinal ependymomas: report of 86 consecutive cases
Neurosurgery, 67 (6), 1622-31; discussion 1631
DOI 10.1227/NEU.0b013e3181f96d41, PubMed 21107192

Kolstad F, Nygaard ØP, Andresen H, Leivseth G (2010)
Anterior cervical arthrodesis using a "stand alone" cylindrical titanium cage: prospective analysis of radiographic parameters
Spine (Phila Pa 1976), 35 (16), 1545-50
DOI 10.1097/BRS.0b013e3181d259c1, PubMed 20581756

Publications 2007

Kolstad F, Nygaard ØP, Leivseth G (2007)
Segmental motion adjacent to anterior cervical arthrodesis: a prospective study
Spine (Phila Pa 1976), 32 (5), 512-7
DOI 10.1097/01.brs.0000256448.04035.bb, PubMed 17334284

Publications 2006

Kolstad F, Rygh OM, Selbekk T, Unsgaard G, Nygaard OP (2006)
Three-dimensional ultrasonography navigation in spinal cord tumor surgery. Technical note
J Neurosurg Spine, 5 (3), 264-70
DOI 10.3171/spi.2006.5.3.264, PubMed 16961090

Publications 2005

Kolstad F, Myhr G, Kvistad KA, Nygaard OP, Leivseth G (2005)
Degeneration and height of cervical discs classified from MRI compared with precise height measurements from radiographs
Eur J Radiol, 55 (3), 415-20
DOI 10.1016/j.ejrad.2005.02.005, PubMed 16129250

Leivseth G, Kolstad F, Nygaard OP, Zoega B, Frobin W, Brinckmann P (2005)
Comparing precision of distortion-compensated and stereophotogrammetric Roentgen analysis when monitoring fusion in the cervical spine
Eur Spine J, 15 (6), 774-9
DOI 10.1007/s00586-005-0929-z, PubMed 16163513

Nygaard ØP, Kolstad F, Kvistad KA, Zwart JA (2005)
Kronisk nakkeslengsyndrom er ingen indikasjon for kraniocervikal fiksasjon
[Den norske lægeforening], [Oslo], S. 2939-2941
BIBSYS 061124486

Nygaard ØP, Kolstad F, Kvistad KA, Zwart JA, Solberg T, Lied B, Myrseth E, Helseth E, Baardsen R (2005)
[Chronic whiplash syndrome is no indication for craniocervical fixation]
Tidsskr Nor Laegeforen, 125 (21), 2939-41
PubMed 16276376