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List of works by Ilkka J Helenius

Acetaminophen improves analgesia but does not reduce opioid requirement after major spine surgery in children and adolescents

scientific article published on September 2012

Acute patellar dislocation in children and adolescents: a randomized clinical trial

scientific article

Allergic rhinitis and pharmacological management in elite athletes

scientific article published in May 2005

Anterior surgery for adolescent idiopathic scoliosis

scientific article published on 11 December 2012

Asthma and increased bronchial responsiveness in elite athletes: Atopy and sport event as risk factors☆☆☆★★★ ⬇️

scientific article published on 01 May 1998

Asthma medication in Finnish olympic athletes: no signs of inhaled beta2-agonist overuse.

scientific article published in June 2004

Asthma medication is increasingly prescribed for finnish olympic athletes--for a reason?

scientific article

Asthma, airway inflammation and treatment in elite athletes

scientific article

Avascular bone necrosis of the hip joint after solid organ transplantation in childhood: a clinical and MRI analysis

scientific article published on 01 June 2006

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

scientific article published on 03 January 2019

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

scientific article published on 01 August 2019

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

scientific article published on 06 June 2007

Cast immobilisation in situ versus open reduction and internal fixation of displaced medial epicondyle fractures in children between 7 and 16 years old. A study protocol for a randomised controlled trial

scientific article

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

scientific article

Cementless total hip arthroplasty in patients with high congenital hip dislocation

scientific article published on 01 January 2006

Cementless total hip arthroplasty in patients with severely dysplastic hips and a previous Schanz osteotomy of the femur: techniques, pitfalls, and long-term outcome

scientific article

Cerebral palsy with dislocated hip and scoliosis: what to deal with first?

scientific article published on 01 February 2020

Clinical Presentation and Physical Examination of Children with Cervical Spine Disorders

scientific article

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

scientific article published on 01 August 2020

Clinical and radiographic findings of the temporomandibular joint in patients with various rheumatic diseases. A case-control study

scientific article published on 01 April 2005

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

scientific article published on 14 April 2019

Comparison of long-term functional and radiologic outcomes after Harrington instrumentation and spondylodesis in adolescent idiopathic scoliosis: a review of 78 patients

scientific article

Complex spine deformities in young patients with severe osteogenesis imperfecta: current concepts review

scientific article published on 01 February 2019

Conservative treatment of main thoracic adolescent idiopathic scoliosis: Full-time or nighttime bracing?

scientific article published on 01 May 2019

Cotrel-Dubousset (CD) or Universal Spine System (USS) instrumentation in adolescent idiopathic scoliosis (AIS): comparison of midterm clinical, functional, and radiologic outcomes

scientific article published in September 2004

Delayed Dural Leak Following Posterior Spinal Fusion for Idiopathic Scoliosis Using All Posterior Pedicle Screw Technique.

scientific article published on 17 May 2017

Dietary supplementation habits and perceptions of supplement use among elite Finnish athletes

scientific article published in August 2011

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

scientific article published on 7 February 2006

Diverse approaches to scoliosis in young children

scientific article published on 26 October 2020

Does gender affect outcome of surgery in adolescent idiopathic scoliosis?

scientific article published on 01 February 2005

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

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

scientific article

Effects of surgical correction of neuromuscular scoliosis on gastric myoelectrical activity, emptying, and upper gastrointestinal symptoms.

scientific article published in January 2014

Emergency procedure skills of graduating medical doctors

scientific article published on 01 March 2003

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 instrumentatio

scientific article published on August 2013

Ewing's sarcoma family of tumors in Finland during 1990-2009: a population-based study

scientific article published on 22 November 2012

Extended spectrum penicillins reduce the risk of omphalocele: A population-based case-control study

scientific article published on 07 November 2020

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

scientific article published in December 2017

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

scientific article published on 31 December 2019

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

scientific article published in March 2016

Graduating medical students and emergency procedure skill teaching in Finland--does a clinical skills centre make the difference?

scientific article published in October 2007

Hajdu-Cheney syndrome with severe dural ectasia

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

scientific article published in December 2003

Health-Related Quality of Life Outcomes of Instrumented Circumferential Spinal Fusion for Pediatric Spondylolisthesis. A Comparison With Age and Gender Matched Healthy Controls

scientific article published on 10 September 2020

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.

scientific article

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

scientific article

High risk for major nonlimb anomalies associated with lower-limb deficiency: a population-based study.

scientific article published in November 2014

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

scientific article published on 20 March 2019

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

scientific article published on 19 November 2018

Impact of Pregnancy on Loss of Deformity Correction After Pedicle Screw Instrumentation for Adolescent Idiopathic Scoliosis

scientific article published on 06 April 2020

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

scholarly article in Journal of High Energy Physics, 2012 no. 7, July 2012

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

scientific article published on 18 June 2016

In-hospital treated pediatric injuries are increasing in Finland--a population based study between 1997 and 2006.

scientific article published in January 2011

Incidence and predictors of fractures in children after solid organ transplantation: a 5-year prospective, population-based study

scientific article

Incidence of spinal and spinal cord injuries and their surgical treatment in children and adolescents: a population-based study

scientific article published in January 2010

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

scientific article

Instrumented cervical spinal fusions in children: indications and outcomes

scientific article published in December 2017

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

scientific article

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

scientific article published in June 2008

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

scientific article published on 01 October 2012

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

scientific article published on 01 October 2006

Long-term results of surgery for brachial plexus birth palsy

scientific article published in January 2007

Lung function in diastrophic dysplasia

scientific article published in April 2002

Magnetic resonance imaging analysis of hip joint development in patients with diastrophic dysplasia

scientific article published in March 2002

Magnetically controlled Growing Rods for Early-onset Scoliosis: A Multicenter Study of 23 Cases With Minimum 2 years Follow-up

scientific article

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

scientific article published in December 2005

Maternal risk factors for congenital limb deficiencies: A population‐based case–control study

scientific article

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

scientific article published on 14 May 2020

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

scientific article

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

scientific article published on 01 August 2008

Natural history of spinal anomalies and scoliosis associated with esophageal atresia

scientific article

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

scientific article published on 07 September 2005

Normal behavior of plasma procalcitonin in adolescents undergoing surgery for scoliosis

scientific article published on 11 February 2014

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

scientific article published on June 1, 1998

Omphalocele in Finland from 1993 to 2014: Trends, Prevalence, Mortality, and Associated Malformations-A Population-Based Study

scientific article published on 04 March 2020

Operative treatment of fractures in children is increasing. A population-based study from Finland

scientific article published on 01 November 2009

Operative treatment of isthmic spondylolisthesis in children: a long-term, retrospective comparative study with matched cohorts

scientific article

Oral and salivary parameters in patients with rheumatic diseases

scientific article published on 01 October 2005

Os Odontoideum in Children: Treatment Outcomes and Neurological Risk Factors

scientific article published on 01 October 2019

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

scientific article published in November 2016

Outcomes of growing rod surgery for severe compared with moderate early-onset scoliosis: a matched comparative study

scientific article published on 01 June 2018

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

scientific article published on 01 February 2019

Paper #34: Treatment of Severe Early Onset Scoliosis using Distraction Based Spinal Instrumentation : A matched comparative study

scientific article published on 01 November 2017

Permanent brachial plexus birth palsy does not impair the development and function of the spine and lower limbs

scientific article published on 01 November 2009

Physician-prescribed medication use by the Finnish Paralympic and Olympic athletes

scientific article published on 01 November 2013

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

scientific article published on 12 September 2018

Posterolateral, anterior, or circumferential fusion in situ for high-grade spondylolisthesis in young patients: a long-term evaluation using the Scoliosis Research Society questionnaire

scientific article published on 01 January 2006

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

scientific article

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

scientific article published on 01 February 2020

Preliminary comparison of primary and conversion surgery with magnetically controlled growing rods in children with early onset scoliosis.

scientific article published on 9 May 2016

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.

scientific article published on 17 November 2017

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

scientific article published on 23 December 2020

Primary malignant bone tumours of spine and pelvis in children

scientific article

Radiographic Outcomes of Immobilization using Boston Brace for Pediatric Spondylolysis

scientific article published on 01 January 2020

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

scientific article published on 13 December 2010

Re: Mardjetko S, Albert T, Andersson G, et al. Spine/SRS Spondylolisthesis Summary Statement. Spine 2005;30:S3

scientific article published on 01 August 2005

Recessive MED with auricular swelling due to compound heterozygosity Arg279Tpr/Thr512Lys in theSLC26A2gene

article

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

scientific article published on 01 April 1998

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

scientific article published on 14 December 2020

Results of growth-friendly management of early-onset scoliosis in children with and without skeletal dysplasias: a matched comparison

scientific article published on 01 December 2019

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

scientific article published in February 2015

Risk Factors and Prevalence of Limb Deficiencies Associated With Amniotic Band Sequence: A Population-based Case-control Study

scientific article published on 25 September 2020

Scoliosis research society outcome instrument in evaluation of long-term surgical results in spondylolysis and low-grade isthmic spondylolisthesis in young patients

scientific article

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

scientific article published on 27 February 2010

Shilla Growth Guidance Compared with Magnetically Controlled Growing Rods in The Treatment of Neuromuscular and Syndromic Early Onset Scoliosis

scientific article published on 26 August 2020

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

scientific article published on 01 February 2020

Spine after solid organ transplantation in childhood: a clinical, radiographic, and magnetic resonance imaging analysis of 40 patients

scientific article published on August 2006

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

scientific article published on 01 January 2020

Sudden edema and pain in the knee

scientific article (publication date: 2003)

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

scientific article published on 01 May 2019

Surgical correction of spinal deformities after solid organ transplantation in childhood

scientific article published on 10 January 2006

Surgical procedure skills of graduating medical students: effects of sex, working, and research experience

scientific article published in February 2002

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

scientific article published on 19 March 2015

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

scientific article published on 01 March 2008

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

scientific article published in July 2012

The lifetime risk of pneumonia in patients with neuromuscular scoliosis at a mean age of 21 years: the role of spinal deformity surgery.

scientific article

Therapy insight: orthopedic complications after solid organ transplantation in childhood

scientific article published on February 2007

Total hip arthroplasty for primary osteoarthrosis in younger patients in the Finnish arthroplasty register. 4,661 primary replacements followed for 0-22 years

scientific article published in February 2005

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

scientific article published in December 2006

Total hip arthroplasty in diastrophic dysplasia.

scientific article published in March 2003

Total knee arthroplasty in patients with diastrophic dysplasia.

scientific article published in November 2003

Treatment of Aneurysmal Bone Cysts with Bioactive Glass in Children.

scientific article published in September 2017

Treatment of severe spondylolisthesis in adolescence with reduction or fusion in situ: long-term clinical, radiologic, and functional outcome

scientific article published in March 2006

Treatment of spinal deformities in patients with diastrophic dysplasia: a long-term, population based, retrospective outcome study.

scientific article

Treatment strategies for early-onset scoliosis.

scientific article

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

scientific article published in February 2006

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

scientific article published on 01 March 2007

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

scientific article published on 01 March 2008

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

scientific article

Upper cervical spine fusion in children with skeletal dysplasia.

scientific article published on January 2013

Use of dietary supplements in Olympic athletes is decreasing: a follow-up study between 2002 and 2009.

scientific article

Use of prescription drugs in athletes

scientific article published on January 2008

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

scientific article published on 25 May 2011

Walking ability in patients with diastrophic dysplasia: a clinical, electroneurophysiological, treadmill, and MRI analysis

scientific article published in September 2004

[Pediatric orthopedic cervical spine problems]

scientific article published in January 2016

[Surgical treatment of back problems of a growing child]

scientific article published on 01 January 2009

[Treatment of severe scoliosis]

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