V. Ponkilainen

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The Benefits and Harms of Early Mobilization and Supervised Exercise Therapy after Non-surgically Treated Proximal Humerus or Distal Radius fracture: A systematic Review and Meta-analysis

V. Mattila, I. Mechlenburg, A. Launonen, 2021, Current Reviews in Musculoskeletal Medicine.

Incidence and Characteristics of Midfoot Injuries

V. Mattila, H. Haapasalo, H. Mäenpää, 2018, Foot & ankle international.

Prioritizing Elective Surgery During the COVID-19 Pandemic Has Caused Age-Related Inequality: a Multicenter Study

M. Uimonen, Ville M. Mattila, V. Ponkilainen, 2022, SN Comprehensive Clinical Medicine.

Perioperative use of disease modifying anti-rheumatic drugs (DMARDs) in people with inflammatory arthritis

R. Buchbinder, M. Uimonen, R. Johnston, 2022, Cochrane Database of Systematic Reviews.

Emergency department visits due to coronary artery disease during COVID-19 in Finland: A register-based study

M. Uimonen, M. Eskola, Ville M. Mattila, 2021, Scandinavian journal of public health.

Revision Rates After Primary ACL Reconstruction Performed Between 1969 and 2018: A Systematic Review and Metaregression Analysis

A. Reito, V. Ponkilainen, Rasmus Liukkonen, 2022, Orthopaedic journal of sports medicine.

Incidence of Neonatal Developmental Dysplasia of the Hip and Late Detection Rates Based on Screening Strategy

M. Uimonen, R. Sund, I. Helenius, 2022, JAMA network open.

Pregnancy and delivery after spine fracture or surgery: A nationwide population-based register study in Finland

V. Mattila, T. Huttunen, V. Ponkilainen, 2022, PloS one.

Incidence of Fracture Hospitalization and Surgery in Women Increases Steadily During the Puerperal and Lactation Period: A Retrospective Register‐Based Cohort Study in Finland From 1999 to 2018

V. Mattila, T. Huttunen, V. Ponkilainen, 2022, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

Characteristics of Osteochondral Fractures Caused by Patellar Dislocation

M. Uimonen, V. Mattila, J. Paloneva, 2021, Orthopaedic journal of sports medicine.

The impact of the COVID-19 pandemic on waiting times for elective surgery patients: A multicenter study

M. Uimonen, V. Mattila, J. Paloneva, 2021, PloS one.

Postponing elective surgery due to COVID-19 did not decrease the oncological surgery rate in Finland

M. Uimonen, V. Mattila, J. Paloneva, 2021, The British journal of surgery.

Birth rate after major trauma in fertile-aged women: a nationwide population-based cohort study in Finland

V. Mattila, T. Huttunen, V. Ponkilainen, 2022, Reproductive Health.

The rate of elective cesarean section after pelvic or hip fracture remains high even after the long-term follow-up: A nationwide register-based study in Finland.

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2022, European journal of obstetrics, gynecology, and reproductive biology.

Pregnancy and delivery after pelvic fracture in fertile-aged women: A nationwide population-based cohort study in Finland.

V. Mattila, V. Ponkilainen, I. Kuitunen, 2022, European journal of obstetrics, gynecology, and reproductive biology.

Outcomes following the operative treatment of intra-articular fracture combined with medial patellofemoral ligament reconstruction after patellar dislocation

M. Uimonen, J. Paloneva, J. Repo, 2022, Knee Surgery & Related Research.

Glucocorticoid injections for lateral elbow pain

R. Buchbinder, R. Johnston, T. Karjalainen, 2022, Cochrane Database of Systematic Reviews.

The incidence of musculoskeletal injuries: a systematic review and meta-analysis

M. Uimonen, A. Reito, V. Ponkilainen, 2022, Bone & joint research.

National trends in lumbar spine decompression and fusion surgery in Finland, 1997–2018

V. Mattila, M. Neva, L. Pekkanen, 2020, Acta orthopaedica.

Survival Analysis and Cox Proportional Hazards Model Reporting in Pediatric Leukemia Studies—a Systematic Review

M. Uimonen, O. Lohi, V. Ponkilainen, 2022, SN Comprehensive Clinical Medicine.

Interpositional Arthroplasty of the First Metatarsophalangeal Joint with Bioresorbable Pldla Implant in the Treatment of Hallux Rigidus and Arthritic Hallux Valgus: A 9-Year Case Series Follow-Up

H. Haapasalo, H. Mäenpää, H. Laine, 2019, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Daylight savings time transition and the incidence of femur fractures in the older population: a nationwide registry-based study

M. Uimonen, A. Reito, Ville M. Mattila, 2022, PeerJ.

Association between fixation type and revision risk in total knee arthroplasty patients aged 65 years and older: a cohort study of 265,877 patients from the Nordic Arthroplasty Register Association 2000–2016

O. Furnes, A. Eskelinen, A. Pedersen, 2020, Acta orthopaedica.

In vitro fertilization increases the odds of gestational diabetes: a nationwide register-based cohort study

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2022, Acta Diabetologica.

Testing the proportional hazards assumption in cox regression and dealing with possible non-proportionality in total joint arthroplasty research: methodological perspectives and review

M. Uimonen, A. Eskelinen, A. Reito, 2021, BMC Musculoskeletal Disorders.

Birth rate among women with fear of childbirth: A nationwide register-based cohort study in Finland.

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, Annals of epidemiology.

Trends in the epidemiology of fear of childbirth and association with intended mode of delivery: A nationwide register‐based cohort study in Finland

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, Acta obstetricia et gynecologica Scandinavica.

Incidence of obese parturients and the outcomes of their pregnancies: a nationwide register study in Finland

T. Huttunen, V. Ponkilainen, I. Kuitunen, 2022, European Journal of Obstetrics & Gynecology and Reproductive Biology.

Factors associated with fear of childbirth in a subsequent pregnancy: a nationwide case–control analysis in Finland

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, BMC Women's Health.

Pregnancy and delivery after traumatic brain injury: a nationwide population-based cohort study in Finland

V. Mattila, T. Luoto, V. Ponkilainen, 2022, The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

Incidence of lumbar discectomy during pregnancy and within 12 months post-partum in Finland between 1999 and 2017: a retrospective register-based cohort study.

T. Huttunen, Ville M. Mattila, V. Ponkilainen, 2022, The spine journal : official journal of the North American Spine Society.

Incidence for volar locking plate removal following distal radius fracture surgery

V. Mattila, A. Launonen, T. Huttunen, 2020, Archives of Orthopaedic and Trauma Surgery.

Nonoperative, open reduction and internal fixation or primary arthrodesis in the treatment of Lisfranc injuries: a prospective, randomized, multicenter trial – study protocol

V. Mattila, H. Haapasalo, A. Paakkala, 2018, BMC Musculoskeletal Disorders.

Effect of national COVID-19 lockdown on the incidence of muscle, tendon and ligament injuries and related surgical procedures in the working-aged Finnish population

M. Uimonen, V. Mattila, J. Paloneva, 2022, Archives of Orthopaedic and Trauma Surgery.

The effect of COVID-19 lockdown on the incidence of emergency department visits due to injuries and the most typical fractures in 4 Finnish hospitals

V. Mattila, R. Sund, H. Kröger, 2022, Acta orthopaedica.

Incidence of pediatric injury visits decreased while trauma surgeries remained stable during the first and second waves of the COVID-19 pandemic in Finland: a register-based study

M. Uimonen, V. Mattila, V. Ponkilainen, 2021, World Journal of Pediatric Surgery.

Assessment of the structural validity of three foot and ankle specific patient-reported outcome measures.

M. Uimonen, A. Häkkinen, E. Tukiainen, 2020, Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.

Assessment of Construct Validity of the Oswestry Disability Index and the Scoliosis Research Society–30 Questionnaire (SRS-30) in Patients With Degenerative Spinal Disease

A. Häkkinen, J. Ylinen, K. Kyrölä, 2019, Spine deformity.

Assessment of construct validity of the Finnish versions of the Disabilities of Arm, Shoulder and Hand Instrument and the Michigan Hand Outcomes Questionnaire.

J. Karppinen, M. Uimonen, A. Häkkinen, 2019, Journal of hand therapy : official journal of the American Society of Hand Therapists.

Emergency department visits due to hand trauma and subsequent emergency hand surgery in three Finnish hospitals during the first and second waves of COVID-19 pandemic

V. Mattila, J. Jokihaara, A. Reito, 2022, PloS one.

Incidence of Spine Fracture Hospitalization and Surgery in Finland in 1998-2017.

P. Kannus, S. Niemi, V. Mattila, 2020, Spine.

V. Ponkilainen, I. Kuitunen, 2021, Sexually Transmitted Infections.

Tympanostomies and tonsillar surgery in children during the COVID‐19 pandemic in Finland

M. Uimonen, V. Mattila, M. Renko, 2021, Laryngoscope Investigative Otolaryngology.

Primary care visits due to mental health problems and use of psychotropic medication during the COVID-19 pandemic in Finnish adolescents and young adults

M. Uimonen, Ville M. Mattila, V. Ponkilainen, 2023, Child and Adolescent Psychiatry and Mental Health.

The effect of national lockdown due to COVID-19 on emergency department visits

V. Mattila, A. Reito, J. Paloneva, 2020, Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine.

Healthcare lockdown resulted in a treatment backlog in elective urological surgery during COVID‐19

M. Uimonen, V. Mattila, H. Seikkula, 2021, BJU international.

Structural validity of the Finnish Manchester-Oxford Foot Questionnaire (MOXFQ) using the Rasch model.

A. Häkkinen, A. Toom, J. Lindahl, 2020, Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.

Incidence of Peripheral Nerve Decompression Surgery During Pregnancy and the First Year After Delivery in Finland From 1999 to 2017: A Retrospective Register-Based Cohort Study

J. Jokihaara, T. Huttunen, Ville M. Mattila, 2023, The Journal of Hand Surgery.

LIMPER trials: immediate mobilisation versus 2-week cast immobilisation after distal radius fracture treated with volar locking plate – a study protocol for a prospective, randomised, controlled trial

V. Mattila, M. Helminen, A. Reito, 2022, BMJ Open.

COVID‐19 vaccination status and testing rates in Finland—A potential cause for bias in observational vaccine effectiveness analysis

M. Uimonen, V. Ponkilainen, I. Kuitunen, 2022, Influenza and other respiratory viruses.

The risk of osteochondral fracture after patellar dislocation is related to patellofemoral anatomy

M. Uimonen, V. Mattila, J. Paloneva, 2021, Knee Surgery, Sports Traumatology, Arthroscopy.

The influence of primary treatment approach on outcomes in patients with osteochondral fracture after patellar dislocation: a case series

M. Uimonen, J. Paloneva, J. Repo, 2023, Knee Surgery & Related Research.

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.

Delivery mode and fetal outcome in attempted vaginal deliveries after previous cesarean section: a nationwide register-based cohort study in Finland.

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

The rates of vaginal births after cesarean section have increased during the last decades: a nationwide register-based cohort study in Finland.

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, Archives of Gynecology and Obstetrics.

Emergency visits by older adults decreased during COVID‐19 but increased in the oldest old

M. Uimonen, V. Mattila, E. Jämsen, 2021, Journal of the American Geriatrics Society.

Hardware removal rates after surgical treatment of proximal femur fractures

P. Kannus, V. Mattila, T. Huttunen, 2020, Archives of Orthopaedic and Trauma Surgery.

Decreasing Incidence of Lumbar Discectomy Surgery in Finland in 1997-2018.

V. Mattila, T. Huttunen, V. Ponkilainen, 2020, Spine.

Multivariable models in orthopaedic research: a methodological review of covariate selection and causal relationships.

M. Uimonen, A. Eskelinen, A. Reito, 2021, Osteoarthritis and cartilage.

The effect of nationwide lockdown and societal restrictions due to COVID-19 on emergency and urgent surgeries

V. Mattila, A. Reito, J. Paloneva, 2020, The British journal of surgery.

Trends in acute abdominal pain visits to EDs and rate of abdominal surgeries during the COVID-19 pandemic in Finland: A retrospective register study.

V. Mattila, J. Paloneva, T. Hevonkorpi, 2021, Scandinavian journal of surgery : SJS : official organ for the Finnish Surgical Society and the Scandinavian Surgical Society.

Trends in appendicectomy during the COVID-19 pandemic

V. Mattila, J. Paloneva, T. Hevonkorpi, 2020, The British journal of surgery.

Treatment of hallux rigidus (HARD trial): study protocol of a prospective, randomised, controlled trial of arthrodesis versus watchful waiting in the treatment of a painful osteoarthritic first metatarsophalangeal joint

J. Repo, V. Ponkilainen, T. Lähdeoja, 2021, BMJ Open.

Validation of the Western Ontario and McMaster Universities Osteoarthritis Index in Patients Having Undergone Ankle Fracture Surgery.

M. Uimonen, A. Häkkinen, E. Tukiainen, 2019, The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons.

Inter- and intraobserver reliability of non-weight-bearing foot radiographs compared with CT in Lisfranc injuries

V. Mattila, H. Haapasalo, H. Mäenpää, 2020, Archives of Orthopaedic and Trauma Surgery.

The Development of Lower Limb Amputations in Finland from 1997 to 2018: A Nationwide Retrospective Registry Study.

V. Mattila, I. Kaartinen, J. Paloneva, 2021, European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery.

Severely injured patients do not disappear in a pandemic: Incidence and characteristics of severe injuries during COVID-19 lockdown in Finland

V. Mattila, J. Sirola, A. Reito, 2021, Acta Orthopaedica.

Trends in emergency department visits due to back pain and spine surgeries during the COVID-19 pandemic in Finland

M. Uimonen, V. Mattila, V. Ponkilainen, 2022, Medicine.

Smoking is associated with an increased risk of fractures in women: a nationwide population-based cohort study in Finland

T. Huttunen, Ville M. Mattila, V. Ponkilainen, 2022, Acta orthopaedica.

Exploration of muscle-tendon biomechanics one year after Achilles tendon rupture and the compensatory role of flexor hallucis longus.

T. Finni, N. Cronin, L. Stenroth, 2023, Journal of biomechanics.

Regional variations in lumbar spine surgery in Finland

V. Mattila, T. Huttunen, V. Ponkilainen, 2021, Archives of Orthopaedic and Trauma Surgery.

Obesity increases the odds of multiple pregnancies: A nationwide register‐based cohort study in Finland

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics.

Incidence of ankle arthrodesis and total ankle replacement between 1997 and 2018: A nationwide registry study in Finland.

V. Mattila, H. Haapasalo, J. Repo, 2023, Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.

During the COVID-19 pandemic in Finland, the number of minor lower limb amputations decreased, whereas major amputations increased.

M. Uimonen, V. Ponkilainen, I. Kuitunen, 2021, The British journal of surgery.

Maternal Underweight is Associated with Lower Fracture Risk after Pregnancy: A Nationwide Register-Based Study in Finland

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, SN Comprehensive Clinical Medicine.

Incidence of acute neurosurgery for traumatic brain injury in children—a nationwide analysis from 1998 to 2018

T. Luoto, G. Iverson, Ville M. Mattila, 2023, Acta Neurochirurgica.

Incidence of fracture hospitalization and surgery during pregnancy in Finland—1998–2017: a retrospective register-based cohort study

T. Huttunen, Ville M. Mattila, V. Ponkilainen, 2023, Archives of Orthopaedic and Trauma Surgery.

Increasing incidence of pediatric mild traumatic brain injury in Finland - a nationwide register study from 1998 to 2018.

G. Iverson, T. Luoto, Ville M. Mattila, 2022, Injury.

Intensive care unit admissions with and without COVID-19 in Finland from 2017 to 2021: a retrospective register-based study

M. Uimonen, T. Huttunen, Ville M. Mattila, 2023, BMC Anesthesiology.

Effect of national COVID-19 lockdown on the incidence of muscle, tendon and ligament injuries and related surgical procedures in the working-aged Finnish population

M. Uimonen, V. Mattila, J. Paloneva, 2022, Archives of Orthopaedic and Trauma Surgery.

Outcomes after nonoperatively treated non-displaced Lisfranc injury: a retrospective case series of 55 patients

V. Mattila, H. Haapasalo, H. Mäenpää, 2020, Archives of Orthopaedic and Trauma Surgery.

Traumatic brain injury during pregnancy is associated with increased rate of cesarean section: a nationwide multi-register study in Finland

Jeremias Tarkiainen, Ville M. Mattila, V. Ponkilainen, 2023, The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

Validity of five foot and ankle specific electronic patient-reported outcome (ePRO) instruments in patients undergoing elective orthopedic foot or ankle surgery.

M. Uimonen, A. Häkkinen, A. Toom, 2020, Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.

Incidence of football injuries sustained on artificial turf compared to grass and other playing surfaces: a systematic review and meta-analysis

Ville M. Mattila, V. Ponkilainen, I. Kuitunen, 2023, EClinicalMedicine.

Preventive medication efficacy after 1-year follow-up for graft failure in coronary artery bypass surgery patients: Bayesian network meta-analysis

M. Uimonen, Jeremias Tarkiainen, V. Ponkilainen, 2024, European heart journal open.

Antithrombotic management after aortic valve replacement with biological prosthesis: a meta-analysis

M. Uimonen, V. Ponkilainen, I. Kuitunen, 2024, Journal of cardiothoracic surgery.

Open Reduction Internal Fixation vs Primary Arthrodesis for Displaced Lisfranc Injuries: A Multicenter Randomized Controlled Trial

H. Haapasalo, H. Mäenpää, H. Laine, 2024, Foot & ankle international.

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.

Impact of the Nordic Arthroplasty Register Association (NARA) collaboration on demographics, methods and revision rates in knee arthroplasty: a register-based study from NARA 2000–2017

O. Furnes, A. Eskelinen, A. Pedersen, 2022, Acta orthopaedica.