I. Helenius

I. Helenius, W. Vogelsang, Marina Walt, 2019, Proceedings of XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2019).

nPDF constraints from the large hadron electron collider

I. Helenius, H. Paukkunen, N. Armesto, 2016, 1606.09003.

Physician-Prescribed Medication Use by the Finnish Paralympic and Olympic Athletes

T. Vasankari, I. Helenius, A. Alaranta, 2013, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

Surgical correction of spinal deformities after solid organ transplantation in childhood

J. Peltonen, V. Remes, I. Helenius, 2006, European Spine Journal.

Constraining nPDFs with inclusive pions and direct photons at forward rapidities in p+Pb collisions at the LHC

I. Helenius, K. Eskola, H. Paukkunen, 2014, 1404.0470.

Modeling the Impact Parameter Dependence of the nPDFs With EKS98 and EPS09 Global Fits

I. Helenius, K. Eskola, C. Salgado, 2012, 1207.6869.

Prune belly syndrome in Finland - A population-based study on current epidemiology and hospital admissions.

M. Gissler, I. Helenius, N. Pakkasjärvi, 2021, Journal of pediatric urology.

A retrospective cohort study of bleeding characteristics and hidden blood loss after segmental pedicle screw instrumentation in neuromuscular scoliosis as compared with adolescent idiopathic scoliosis

I. Helenius, J. Syvänen, A. Raitio, 2022, North American Spine Society journal.

Total hip arthroplasty for rheumatoid arthritis in younger patients: 2,557 replacements in the Finnish Arthroplasty Register followed for 0–24 years

A. Eskelinen, P. Paavolainen, V. Remes, 2006, Acta orthopaedica.

Pregabalin and Persistent Postoperative Pain Following Posterior Spinal Fusion in Children and Adolescents: A Randomized Clinical Trial.

M. Taittonen, I. Helenius, E. Löyttyniemi, 2021, The Journal of bone and joint surgery. American volume.

Acetaminophen Improves Analgesia but Does Not Reduce Opioid Requirement After Major Spine Surgery in Children and Adolescents

A. Hiller, T. Taivainen, P. Neuvonen, 2012, Spine.

Uncemented total hip arthroplasty for primary osteoarthritis in young patients: A mid-to long-term follow-up study from the Finnish Arthroplasty Register

A. Eskelinen, P. Paavolainen, V. Remes, 2006, Acta orthopaedica.

Hospital admissions and surgical treatment of children with lower-limb deficiency in Finland

I. Helenius, Y. Nietosvaara, A. Ritvanen, 2018, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Intramedullary Nailing of Paediatric Tibial Fractures: Comparison between Flexible and Rigid Nails

I. Helenius, S. Widbom-Kolhanen, 2020, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Marked initial displacement predicts complications in physeal fractures of the distal radius: An analysis of fracture characteristics, primary treatment and complications in 109 patients

I. Helenius, Y. Nietosvaara, C. Hasler, 2005, Acta orthopaedica.

Incidence of Spinal and Spinal Cord Injuries and Their Surgical Treatment in Children and Adolescents: A Population-Based Study

E. Vartiainen, T. Jalanko, M. Pakarinen, 2010, Spine.

Long-term health-related quality of life after surgery for adolescent idiopathic scoliosis and spondylolisthesis.

D. Schlenzka, V. Remes, I. Helenius, 2008, The Journal of bone and joint surgery. American volume.

Does Gender Affect Outcome of Surgery in Adolescent Idiopathic Scoliosis?

M. Ylikoski, D. Schlenzka, V. Remes, 2005, Spine.

Harrington and Cotrel-Dubousset instrumentation in adolescent idiopathic scoliosis. Long-term functional and radiographic outcomes.

M. Ylikoski, D. Schlenzka, V. Remes, 2003, The Journal of bone and joint surgery. American volume.

High incidence of inguinal hernias among patients with congenital abdominal wall defects: a population-based case–control study

M. Gissler, I. Helenius, U. Sankilampi, 2021, European Journal of Pediatrics.

Oral and salivary parameters in patients with rheumatic diseases

H. Kautiainen, M. Leirisalo-Repo, R. Suuronen, 2005, Acta odontologica Scandinavica.

Focal sialadenitis in patients with ankylosing spondylitis and spondyloarthropathy: a comparison with patients with rheumatoid arthritis or mixed connective tissue disease

H. Kautiainen, M. Leirisalo-Repo, R. Suuronen, 2001, Annals of the rheumatic diseases.

Use of Prescription Drugs in Athletes

H. Alaranta, I. Helenius, A. Alaranta, 2008, Sports medicine.

Natural History of Spinal Anomalies and Scoliosis Associated With Esophageal Atresia

J. Peltonen, S. Sarna, M. Pakarinen, 2009, Pediatrics.

Increasing Prevalence and High Risk of Associated Anomalies in Congenital Vertebral Defects: A Population-based Study

M. Gissler, I. Helenius, E. Löyttyniemi, 2022, Journal of pediatric orthopedics.

Outcomes of Spinal Fusion for Cervical Kyphosis in Children with Neurofibromatosis.

I. Helenius, W. Mackenzie, P. Sponseller, 2016, The Journal of bone and joint surgery. American volume.

Allograft Versus Bioactive Glass (BG-S53P4) in Pediatric Benign Bone Lesions

I. Helenius, Y. Nietosvaara, I. Kohonen, 2023, The Journal of bone and joint surgery. American volume.

Treatment of Aneurysmal Bone Cysts with Bioactive Glass in Children

I. Helenius, Y. Nietosvaara, J. Korhonen, 2018, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Rigid fixation improves outcomes of spinal fusion for C1-C2 instability in children with skeletal dysplasias.

I. Helenius, A. Stans, P. Sponseller, 2015, The Journal of bone and joint surgery. American volume.

Fusobacterial Pelvic Osteomyelitis with Brodie's Abscess in a 10-Year-Old Boy Requiring Surgical Evacuation

I. Helenius, V. Peltola, J. Syvänen, 2021, JBJS case connector.

Comparison of three risk stratification scores in gastroschisis neonates: gastroschisis prognostic score, gastroschisis risk stratification index and complex gastroschisis

I. Helenius, U. Sankilampi, A. Raitio, 2022, Pediatric Surgery International.

Different strategies, equivalent treatment approaches in terms of mortality in four university hospitals: a retrospective multicenter study of gastroschisis in Finland

I. Helenius, U. Sankilampi, A. Raitio, 2021, Pediatric Surgery International.

Os Odontoideum in Children: Treatment Outcomes and Neurological Risk Factors.

A. Larson, I. Helenius, P. Sponseller, 2019, The Journal of bone and joint surgery. American volume.

Clinical Presentation and Physical Examination of Children with Cervical Spine Disorders

I. Helenius, W. Warner, 2018 .

The reliability of the AOSpine Thoracolumbar Spine Injury Classification System in children: an international validation study

R. El-Hawary, I. Helenius, F. Miyanji, 2021, Journal of children's orthopaedics.

Gelatine matrix with human thrombin decreases blood loss in adolescents undergoing posterior spinal fusion for idiopathic scoliosis: a multicentre, randomised clinical trial.

I. Helenius, O. Pajulo, J. Syvänen, 2016, The bone & joint journal.

Cementless total hip arthroplasty in patients with high congenital hip dislocation.

K. Tallroth, A. Eskelinen, V. Remes, 2006, The Journal of bone and joint surgery. American volume.

Range of motion and strength after surgery for brachial plexus birth palsy

J. Peltonen, V. Remes, I. Helenius, 2011, Acta orthopaedica.

Total hip arthroplasty for primary osteoarthrosis in younger patients in the Finnish arthroplasty register

A. Eskelinen, P. Paavolainen, V. Remes, 2005, Acta orthopaedica.

Back Pain and Quality of Life After Surgical Treatment for Adolescent Idiopathic Scoliosis at 5-Year Follow-up: Comparison with Healthy Controls and Patients with Untreated Idiopathic Scoliosis.

Elias Diarbakerli, A. Grauers, P. Gerdhem, 2019, The Journal of bone and joint surgery. American volume.

Normal behavior of plasma procalcitonin in adolescents undergoing surgery for scoliosis

O. Ruuskanen, J. Mertsola, I. Helenius, 2014, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Hajdu–Cheney syndrome with severe dural ectasia

O. Mäkitie, I. Helenius, L. Valanne, 2011, American journal of medical genetics. Part A.

A Rare Complication of Thoracic Spine Surgery: Pediatric Horner’s Syndrome after Posterior Vertebral Column Resection—A Case Report

I. Helenius, Paweł Grabala, Kinga Danowska-Idziok, 2023, Children.

Gastrointestinal Complications After Surgical Correction of Neuromuscular Scoliosis: A Retrospective Cohort Study

T. Jalanko, M. Pakarinen, I. Helenius, 2018, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Uninstrumented in situ fusion for high-grade childhood and adolescent isthmic spondylolisthesis: long-term outcome. Surgical technique.

V. Remes, I. Helenius, M. Poussa, 2008, The Journal of bone and joint surgery. American volume.

Uninstrumented in situ fusion for high-grade childhood and adolescent isthmic spondylolisthesis: long-term outcome.

D. Schlenzka, V. Remes, I. Helenius, 2007, The Journal of bone and joint surgery. American volume.

Effect of continuing or finishing high-level sports on airway inflammation, bronchial hyperresponsiveness, and asthma: a 5-year prospective follow-up study of 42 highly trained swimmers.

T. Haahtela, P. Rytilä, S. Sarna, 2002, The Journal of allergy and clinical immunology.

Hybrid versus total pedicle screw instrumentation in patients undergoing surgery for neuromuscular scoliosis: a comparative study with matched cohorts.

T. Jalanko, I. Helenius, O. Pajulo, 2012, The Journal of bone and joint surgery. British volume.

The function of the hand after operations for obstetric injuries to the brachial plexus.

J. Peltonen, V. Remes, I. Helenius, 2008, The Journal of bone and joint surgery. British volume.

Long-term results of surgery for brachial plexus birth palsy.

J. Peltonen, P. Kinnunen, V. Remes, 2007, The Journal of bone and joint surgery. American volume.

Normal and Abnormal Growth of Spine

I. Helenius, 2011 .

Prevalence and risk factors of radial ray deficiencies: A population‐based case–control study

M. Gissler, Anna-Maria Lahesmaa-Korpinen, I. Helenius, 2020, American journal of medical genetics. Part A.

Hemivertebra Resection for Congenital Scoliosis in Young Children: Comparison of Clinical, Radiographic, and Health-Related Quality of Life Outcomes Between the Anteroposterior and Posterolateral Approaches

T. Jalanko, I. Helenius, R. Rintala, 2011, Spine.

Long-term hospital admissions and surgical treatment of children with congenital abdominal wall defects: a population-based study

M. Gissler, I. Helenius, U. Sankilampi, 2021, European Journal of Pediatrics.

Maternal risk factors for gastroschisis: A population-based case-control study.

M. Gissler, I. Helenius, E. Löyttyniemi, 2020, Birth defects research.

Research and medical students

V. Remes, I. Helenius, Ilkka Helenius, 2000 .

Clinical and Radiological Outcomes of Less Invasive Temporary Internal Distraction Followed by Staged Pedicle Screw Instrumentation in Adolescents with Severe Idiopathic Scoliosis at minimum two years' follow-up.

I. Helenius, Paweł Grabala, 2020, World neurosurgery.

Elias Diarbakerli, P. Gerdhem, I. Helenius, 2022, Journal of children's orthopaedics.

The incidence and outcomes of vertebral column resection in paediatric patients: a population-based, multicentre, follow-up study.

I. Helenius, O. Pajulo, J. Serlo, 2012, The Journal of bone and joint surgery. British volume.

Preemptive Pregabalin in Children and Adolescents Undergoing Posterior Instrumented Spinal Fusion: A Double-Blinded, Placebo-Controlled, Randomized Clinical Trial.

T. Manner, I. Helenius, E. Löyttyniemi, 2019, The Journal of bone and joint surgery. American volume.

Comparison of Circular and Sagittal Reinforced Rod Options on Sagittal Balance Restoration in Adolescents Undergoing Pedicle Screw Instrumentation for Idiopathic Scoliosis.

I. Helenius, O. Pajulo, L. Helenius, 2019, World neurosurgery.

Postoperative urinary retention or difficulties to empty the bladder in young patients undergoing posterior spinal fusion for adolescent idiopathic scoliosis.

I. Helenius, O. Pajulo, L. Helenius, 2017, Journal of pediatric surgery.

Preoperative pregabalin has no effect on intraoperative neurophysiological monitoring in adolescents undergoing posterior spinal fusion for spinal deformities: a double-blind, randomized, placebo-controlled clinical trial

T. Manner, I. Helenius, O. Pajulo, 2018, European Spine Journal.

Clinical, radiographic and MRI findings of the temporomandibular joint in patients with different rheumatic diseases.

C Lindqvist, D Hallikainen, H. Kautiainen, 2006, International journal of oral and maxillofacial surgery.

Treatment of Severe Spondylolisthesis in Adolescence With Reduction or Fusion In Situ: Long-term Clinical, Radiologic, and Functional Outcome

D. Schlenzka, V. Remes, I. Helenius, 2006, Spine.

Scoliosis Research Society Outcome Instrument in Evaluation of Long-Term Surgical Results in Spondylolysis and Low-Grade Isthmic Spondylolisthesis in Young Patients

D. Schlenzka, V. Remes, I. Helenius, 2005, Spine.

Direct repair for treatment of symptomatic spondylolysis and low-grade isthmic spondylolisthesis in young patients: no benefit in comparison to segmental fusion after a mean follow-up of 14.8 years

K. Tallroth, D. Schlenzka, V. Remes, 2006, European Spine Journal.

Posterolateral, Anterior, or Circumferential Fusion In Situ for High-Grade Spondylolisthesis in Young Patients: A Long-Term Evaluation Using The Scoliosis Research Society Questionnaire

D. Schlenzka, V. Remes, I. Helenius, 2006, Spine.

No correlation between patient outcome and abnormal lumbar MRI findings 21 years after posterior or posterolateral fusion for isthmic spondylolisthesis in children and adolescents

D. Schlenzka, V. Remes, I. Helenius, 2005, European Spine Journal.

Long-term clinical, functional and radiological outcome 21 years after posterior or posterolateral fusion in childhood and adolescence isthmic spondylolisthesis

D. Schlenzka, V. Remes, I. Helenius, 2005, European Spine Journal.

The Efficacy of a Posterior Approach to Surgical Correction for Neglected Idiopathic Scoliosis: A Comparative Analysis According to Health-Related Quality of Life, Pulmonary Function, Back Pain and Sexual Function

J. Buchowski, I. Helenius, Suken A. Shah, 2023, Children.

Elias Diarbakerli, P. Gerdhem, I. Helenius, 2021, European Journal of Orthopaedic Surgery & Traumatology.

Should instrumented spinal fusion in nonambulatory children with neuromuscular scoliosis be extended to L5 or the pelvis?

I. Helenius, M. Gehrchen, Niklas Tøndevold, 2020, The bone & joint journal.

Anterior surgery for adolescent idiopathic scoliosis

I. Helenius, 2013, Journal of children's orthopaedics.

Body mass index affects outcomes after vertebral body tethering surgery

Brian A. Kelly, Todd F. Ritzman, L. Lenke, 2022, Spine Deformity.

Back Pain and Outcomes of Pregnancy After Instrumented Spinal Fusion for Adolescent Idiopathic Scoliosis.

J. Buchowski, A. Larson, I. Helenius, 2019, World neurosurgery.

Unplanned Reoperations in Magnetically Controlled Growing Rod Surgery for Early Onset Scoliosis With a Minimum of Two-Year Follow-Up

I. Helenius, J. Cheung, A. Alanay, 2017, Spine.

Primary malignant bone tumours of spine and pelvis in children

I. Helenius, A. Krieg, 2021, Journal of children's orthopaedics.

Elastic Lumbar Support Versus Rigid Thoracolumbar Orthosis for Acute Pediatric Spondylolysis: A Prospective Controlled Study

I. Helenius, K. Mattila, O. Pajulo, 2022, Spine.

In-Hospital Treated Pediatric Injuries are Increasing in Finland — A Population Based Study between 1997 AND 2006

E. Vartiainen, M. Pakarinen, I. Helenius, 2011, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Long-term Outcome After Posterolateral, Anterior, and Circumferential Fusion for High-Grade Isthmic Spondylolisthesis in Children and Adolescents: Magnetic Resonance Imaging Findings After Average of 17-Year Follow-up

D. Schlenzka, V. Remes, I. Helenius, 2006, Spine.

TREATMENT OF ORTHOPAEDIC DISORDERS IN CHILDREN AND ADOLESCENTS: Need for operative interventions, outcomes, cost benefit analysis, and health-related quality of life.

T. Jalanko, I. Helenius, O. Pajulo, 2013 .

Radiographic Outcomes of Immobilization using Boston Brace for Pediatric Spondylolysis

I. Helenius, K. Mattila, O. Pajulo, 2020, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Morbidity and radiographic outcomes of severe scoliosis of 90° or more: a comparison of hybrid with total pedicle screw instrumentation

T. Jalanko, I. Helenius, M. Mattila, 2014, Journal of children's orthopaedics.

En Bloc Vertebral Column Derotation Provides Spinal Derotation But No Additional Effect on Thoracic Rib Hump Correction as Compared With No Derotation in Adolescents Undergoing Surgery for Idiopathic Scoliosis With Total Pedicle Screw Instrumentation

T. Jalanko, I. Helenius, M. Mattila, 2013, Spine.

Implant Complications After Magnetically Controlled Growing Rods for Early Onset Scoliosis: A Multicenter Retrospective Review

I. Helenius, A. Alanay, G. Mundis, 2017, Journal of pediatric orthopedics.

Scoliosis After Solid Organ Transplantation in Children and Adolescents

O. Mäkitie, J. Peltonen, V. Remes, 2006, American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons.

Upper Cervical Spine Fusion in Children With Skeletal Dysplasia

V. Remes, I. Helenius, N. Pakkasjärvi, 2013, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

The Extension of Surgery Predicts Acute Postoperative Pain, While Persistent Postoperative Pain Is Related to the Spinal Pathology in Adolescents Undergoing Posterior Spinal Fusion

M. Taittonen, I. Helenius, Tommi Yrjälä, 2022, Children.

Effects of Surgical Correction of Neuromuscular Scoliosis on Gastric Myoelectrical Activity, Emptying, and Upper Gastrointestinal Symptoms

P. Salminen, J. Peltonen, T. Jalanko, 2014, Journal of pediatric gastroenterology and nutrition.

Spine After Solid Organ Transplantation in Childhood: A Clinical, Radiographic, and Magnetic Resonance Imaging Analysis of 40 Patients

J. Peltonen, V. Remes, I. Helenius, 2006, Spine.

Perioperative Risk Factors for Bleeding in Adolescents Undergoing Pedicle Screw Instrumentation for Scoliosis

I. Helenius, J. Syvänen, A. Raitio, 2023, Children.

Shadowing in Inelastic Nucleon-Nucleon Cross Section?

I. Helenius, K. Eskola, H. Paukkunen, 2020, Physical review letters.

Smoking and atopy as determinants of sputum eosinophilia and bronchial hyper-responsiveness in adults with normal lung function.

E. Vartiainen, T. Haahtela, P. Jousilahti, 2003, Respiratory medicine.

Asthma, Airway Inflammation and Treatment in Elite Athletes

T. Haahtela, I. Helenius, A. Lumme, 2005, Sports medicine.

Asthma and increased bronchial responsiveness in elite athletes: atopy and sport event as risk factors.

T. Haahtela, H. Tikkanen, S. Sarna, 1998, The Journal of allergy and clinical immunology.

Respiratory symptoms, bronchial responsiveness, and cellular characteristics of induced sputum in elite swimmers

T. Haahtela, P. Venge, H. Tikkanen, 1998, Allergy.

Asthma in runners

H. Tikkanen, I. Helenius, 1994, BMJ.

Occurrence of exercise induced bronchospasm in elite runners: dependence on atopy and exposure to cold air and pollen.

T. Haahtela, H. Tikkanen, I. Helenius, 1998, British journal of sports medicine.

Association between type of training and risk of asthma in elite athletes.

T. Haahtela, H. Tikkanen, I. Helenius, 1997, Thorax.

NNLO nuclear parton distribution functions with electroweak-boson production data from the LHC

I. Helenius, W. Vogelsang, Marina Walt, 2021, Physical Review D.

Ewing’s sarcoma family of tumors in Finland during 1990–2009: A population-based study

A. Ristimäki, T. Böhling, I. Helenius, 2013, Acta oncologica.

Gastroschisis in Finland 1993 to 2014—Increasing Prevalence, High Rates of Abortion, and Survival: A Population-Based Study

M. Gissler, I. Helenius, E. Löyttyniemi, 2019, European Journal of Pediatric Surgery.

Revisiting the D-meson hadroproduction in general-mass variable flavour number scheme

I. Helenius, H. Paukkunen, 2018, 1804.03557.

Impact-parameter dependent nuclear parton distribution functions: EPS09s and EKS98s and their applications in nuclear hard processes

I. Helenius, K. Eskola, C. Salgado, 2012, 1205.5359.

Snowmass 2021 White Paper: Electron Ion Collider for High Energy Physics

M. Begel, S. Chekanov, S. Fazio, 2022, 2203.13199.

A comparison of different selective ultrasound screening strategies for developmental dysplasia of the hip.

M. Uimonen, I. Helenius, V. Ponkilainen, 2023, The bone & joint journal.

Cementless total hip arthroplasty in patients with severely dysplastic hips and a previous Schanz osteotomy of the femur

K. Tallroth, A. Eskelinen, V. Remes, 2009, Acta orthopaedica.

Total Hip Arthroplasty in Diastrophic Dysplasia

K. Tallroth, J. Peltonen, V. Remes, 2003, The Journal of bone and joint surgery. American volume.

Event Generators for High-Energy Physics Experiments

M. Baker, P. Machado, D. Soldin, 2022, 2203.11110.

Recent Pythia 8 Developments : Hard Diffraction, Colour reconnection and gamma-gamma collisions

I. Helenius, C. Rasmussen, J. Christiansen, 2016, 1604.07996.

Does the presence of programmable implanted devices in patients with early onset scoliosis alter typical operative and postoperative practices? A survey of spine surgeons

Sara J. Morgan, Brian A. Kelly, Todd F. Ritzman, 2022, Spine Deformity.

Effects of frequency of distraction in magnetically controlled growing rod (MCGR) lengthening on outcomes and complications

D. Samartzis, I. Helenius, A. Alanay, 2016 .

Standard and magnetically controlled growing rods for the treatment of early onset scoliosis.

I. Helenius, 2020, Annals of translational medicine.

Avascular Bone Necrosis of the Hip Joint after Solid Organ Transplantation in Childhood: A Clinical and MRI Analysis

J. Peltonen, V. Remes, I. Helenius, 2006, Transplantation.

Incidence and Predictors of Fractures in Children After Solid Organ Transplantation: A 5‐Year Prospective, Population‐Based Study

O. Mäkitie, J. Peltonen, S. Sarna, 2005, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

Less-Invasive Approach to Early-Onset Scoliosis—Surgical Technique for Magnetically Controlled Growing Rod (MCGR) Based on Treatment of 2-Year-Old Child with Severe Scoliosis

I. Helenius, Michael A. Galgano, Paweł Grabala, 2023, Children.

The effect of magnetically controlled growing rod on the sagittal profile in early-onset scoliosis patients

D. Samartzis, I. Helenius, A. Alanay, 2016 .

The role of traditional growing rods in the era of magnetically controlled growing rods for the treatment of early-onset scoliosis

Brian A. Kelly, William F Lavelle, A. Crawford, 2021, Spine Deformity.

Impaired Bone Health in Adolescents After Liver Transplantation

O. Mäkitie, I. Helenius, H. Jalanko, 2007, American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons.

Total knee arthroplasty in patients with diastrophic dysplasia.

M. Lohman, K. Tallroth, V. Remes, 2003, The Journal of bone and joint surgery. American volume.

Long-term orthopedic outcomes in patients with epispadias and bladder exstrophy.

I. Helenius, S. Taskinen, J. Suominen, 2012, Journal of pediatric surgery.

Surgically treated patients with axial and peripheral Ewing's sarcoma family of tumours: A population based study in Finland during 1990-2009.

I. Helenius, P. Riikonen, M. Tarkkanen, 2015, European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology.

Severity of vertebral fracture and risk of hip fracture: a nested case–control study

A. Aromaa, P. Knekt, T. Jalanko, 2010, Osteoporosis International.

Airway inflammation, bronchial hyperresponsiveness and asthma in elite ice hockey players

Y. Obase, T. Haahtela, P. Rytilä, 2003, European Respiratory Journal.

Hospital Care and Surgical Treatment of Children With Congenital Upper Limb Defects

I. Helenius, Y. Nietosvaara, N. Pakkasjärvi, 2020, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Learning, Access, and Mobility (LAMB) for Cultural Heritage Education

Isto Huvila, Kari Uotila, Jari-Pekka Paalassalo, 2010 .

Vertebral fracture and cause-specific mortality: a prospective population study of 3,210 men and 3,730 women with 30 years of follow-up

A. Aromaa, P. Knekt, T. Jalanko, 2011, European Spine Journal.

NNLO nuclear parton distribution functions with electroweak-boson production data from the LHC

I. Helenius, W. Vogelsang, Marina Walt, 2021, Physical Review D.

Maternal Risk Factors for Congenital Vertebral Anomalies

M. Gissler, I. Helenius, E. Löyttyniemi, 2023, The Journal of bone and joint surgery. American volume.

To tether or fuse? Significant equipoise remains in treatment recommendations for idiopathic scoliosis

Brian A. Kelly, William F Lavelle, L. Saiman, 2022, Spine Deformity.

Use of Medication in Finnish Olympic Athletes

H. Alaranta, I. Helenius, K. Pietilä, 2004 .

PHOTON-2017 conference proceedings

H. K. Lou, P. Bussey, R. Orava, 2018, 1812.08166.

Zeroing in on the initial state — tomography using bulk, jets and photons

R. Chatterjee, I. Helenius, K. Eskola, 2014, 1407.7954.

Back Pain and Quality of Life 10 Years After Segmental Pedicle Screw Instrumentation for Adolescent Idiopathic Scoliosis

Elias Diarbakerli, P. Gerdhem, I. Helenius, 2023, Spine.

Posterior Spinal Fusion Extended to Stable Vertebra Provides Similar Outcome in Juvenile Idiopathic Scoliosis Patients Compared with Adolescents with Fusion to the Touched Vertebra

I. Helenius, O. Pajulo, L. Helenius, 2018, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Bone densitometry in the diagnosis of vertebral fractures in children: accuracy of vertebral fracture assessment.

O. Mäkitie, M. Mäyränpää, I. Helenius, 2007, Bone.

Snuff Use and Smoking in Finnish Olympic Athletes

H. Alaranta, R. Prättälä, I. Helenius, 2004, International journal of sports medicine.

Hip arthroscopy in osteoarthritis. A review of 68 patients.

V. Remes, I. Helenius, O. Korkala, 2001, Annales chirurgiae et gynaecologiae.

Casting versus flexible intramedullary nailing in displaced forearm shaft fractures in children aged 7–12 years: a study protocol for a randomised controlled trial

I. Helenius, Y. Nietosvaara, Juha-Jaakko Sinikumpu, 2021, BMJ Open.

Results of growth-friendly management of early-onset scoliosis in children with and without skeletal dysplasias.

K. White, I. Helenius, P. Sponseller, 2019, The bone & joint journal.

Treatment of Spinal Deformities in Patients With Diastrophic Dysplasia: A Long-Term, Population Based, Retrospective Outcome Study

J. Peltonen, V. Remes, T. Jalanko, 2009, Spine.

Cervical spine in patients with diastrophic dysplasia – radiographic findings in 122 patients

J. Peltonen, V. Remes, I. Helenius, 2002, Pediatric Radiology.

The Child’s Age and the Size of the Curvature Do Not Affect the Accuracy of Screw Placement with the Free-Hand Technique in Spinal Deformities in Children and Adolescents

J. Buchowski, I. Helenius, Michael A. Galgano, 2023, Journal of clinical medicine.

Results of Conservative and Surgical Management in Children with Idiopathic and Non-Idiopathic Os Odontoideum.

A. Larson, I. Helenius, P. Sponseller, 2020, World Neurosurgery.

The Risk of Nerve Injury in Pediatric Forearm Fractures

I. Helenius, Y. Nietosvaara, M. Ahonen, 2023, The Journal of bone and joint surgery. American volume.

Manubrium sterni in patients with diastrophic dysplasia – radiological analysis of 50 patients

V. Remes, I. Helenius, E. Marttinen, 2001, Pediatric Radiology.

Lessons learned from COVID-19 pandemic in undergraduate surgical education

V. Koljonen, P. Puolakkainen, I. Helenius, 2022, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Incidence, treatment and survival of paediatric patients with bone sarcomas in Finland from 1991 to 2005

I. Helenius, P. Riikonen, M. Tarkkanen, 2015, Acta paediatrica.

Incidence, treatment and survival of paediatric patients with bone sarcomas in Finland from 1991 to 2005

I. Helenius, P. Riikonen, M. Tarkkanen, 2015, Acta paediatrica.

Surgical and Health-related Quality-of-Life Outcomes of Growing Rod “Graduates” With Severe versus Moderate Early-onset Scoliosis

I. Helenius, P. Sponseller, C. Johnston, 2019, Spine.

Paediatric supracondylar humeral fractures: the effect of the surgical specialty on the outcomes

I. Helenius, A. Saarinen, I. Helenius, 2019, Journal of children's orthopaedics.

Asthma Medication Is Increasingly Prescribed for Finnish Olympic Athletes—For a Reason?

T. Haahtela, T. Vasankari, I. Helenius, 2012, The Journal of asthma : official journal of the Association for the Care of Asthma.

Photon-photon and photon-hadron processes in Pythia 8

I. Helenius, 2017, 1708.09759.

Event Generators for High-Energy Physics Experiments

M. Baker, P. Machado, D. Soldin, 2022, 2203.11110.

Mortality in the presence of a vertebral fracture, scoliosis, or Scheuermann's disease in the thoracic spine.

P. Knekt, I. Helenius, H. Rissanen, 2008, Annals of epidemiology.

Intraoperative 3D Imaging Reduces Pedicle Screw Related Complications and Reoperations in Adolescents Undergoing Posterior Spinal Fusion for Idiopathic Scoliosis: A Retrospective Study

I. Helenius, A. Saarinen, J. Syvänen, 2022, Children.

Anterior surgery for adolescent idiopathic scoliosis

I. Helenius, 2013, Journal of children's orthopaedics.

Activity-restriction only as treatment yields positive outcomes in pediatric spinal compression fractures: a prospective study of 47 patients at medium-term follow-up

R. Kivisaari, I. Helenius, M. Ahonen, 2024, Acta orthopaedica.

Biodegradable biomaterials in orthopedic surgery: A narrative review of the current evidence

I. Helenius, Juha-Jaakko Sinikumpu, A. Saarinen, 2023, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Longitudinal growth of children born with gastroschisis or omphalocele

I. Helenius, U. Sankilampi, Asta Tauriainen, 2023, European journal of pediatrics.

Duodenal Atresia in Finland from 2004 to 2017: Prevalence, Mortality, and Associated Anomalies—A Population-Based Study

I. Helenius, E. Löyttyniemi, J. Syvänen, 2024, European Journal of Pediatric Surgery.

Paediatric syndromic scoliosis: proceedings of the half-day course at the 57th annual meeting of the Scoliosis Research Society.

E. Klineberg, M. Welborn, I. Helenius, 2024, Spine deformity.

Rational Q-systems at root of unity I. Closed chains

M. Baker, P. Machado, D. Soldin, 2023, SciPost Physics.

Association Between Lenke Classification, The Extent of Lumbar Spinal Fusion, and Health-Related Quality of Life After Instrumented Spinal Fusion for Adolescent Idiopathic Scoliosis

I. Helenius, A. Saarinen, J. Syvänen, 2023, Spine.