Testing the proportional hazards assumption in cox regression and dealing with possible non-proportionality in total joint arthroplasty research: methodological perspectives and re... von Kuitunen, Ilari, Ponkilainen, Ville T, Uimonen, Mikko M, Eskelinen, Antti, Reito, Aleksi

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Impact of childhood traumatic brain injury on fitness for service class, length of service period, and cognitive performance during military service in Finland from 1998 to 2018: A... von Möttönen, Julius, Ponkilainen, Ville T, Mattila, Ville M, Kuitunen, Ilari

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The effect of national lockdown due to COVID-19 on emergency department visits von Kuitunen, Ilari, Ponkilainen, Ville T, Launonen, Antti P, Reito, Aleksi, Hevonkorpi, Teemu P, Paloneva, Juha, Mattila, Ville M

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Soft bandage, splint or cast as the treatment of distal forearm torus fracture in children: a systematic review and meta-analysis von Pakarinen, Oskari, Saarinen, Antti J., Ponkilainen, Ville T., Uimonen, Mikko, Helenius, Ilkka, Kuitunen, Ilari

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National trends in lumbar spine decompression and fusion surgery in Finland, 1997-2018 von Ponkilainen, Ville T, Huttunen, Tuomas T, Neva, Marko H, Pekkanen, Liisa, Repo, Jussi P, Mattila, Ville M

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Sick leave length and the costs of operatively and conservatively treated distal radius fractures in the working age population: a retrospective cohort study von Palola, Vili, Hevonkorpi, Teemu P, Ponkilainen, Ville T, Launonen, Antti P, Mattila, Ville M

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Primary care visits due to mental health problems and use of psychotropic medication during the COVID-19 pandemic in Finnish adolescents and young adults von Kuitunen, Ilari, Uimonen, Mikko M, Ponkilainen, Ville T, Mattila, Ville M

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Evaluation of the changes in incidence and patient age of knee arthroscopy along with changes in time between knee arthroscopy and arthroplasty between 1998 and 2018: a nationwide... von Ponkilainen, Ville T, Uimonen, Mikko, Sihvonen, Raine, Partio, Nikke, Paloneva, Juha, Mattila, Ville M

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Nonoperative, open reduction and internal fixation or primary arthrodesis in the treatment of Lisfranc injuries: a prospective, randomized, multicenter trial - study protocol von Ponkilainen, Ville T, Mattila, Ville M, Laine, Heikki-Jussi, Paakkala, Antti, Mäenpää, Heikki M, Haapasalo, Heidi H

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Outcomes following the operative treatment of intra-articular fracture combined with medial patellofemoral ligament reconstruction after patellar dislocation von Repo, Jussi P, Uimonen, Mikko M, Nevalainen, Mika T, Nurmi, Heikki, Ponkilainen, Ville T, Tuominen, Antti, Paloneva, Juha

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Revision Rates After Primary ACL Reconstruction Performed Between 1969 and 2018: A Systematic Review and Metaregression Analysis von Liukkonen, Rasmus J., Ponkilainen, Ville T., Reito, Aleksi

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Incorrect blinding assessments are common in meta‐analyses published in high impact journals von Kuitunen, Ilari, Ponkilainen, Ville T., Uimonen, Mikko

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Incidence of obese parturients and the outcomes of their pregnancies: A nationwide register study in Finland von Kuitunen, Ilari, Huttunen, Tuomas T, Ponkilainen, Ville T, Kekki, Maiju

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Increasing incidence of pediatric mild traumatic brain injury in Finland – a nationwide register study from 1998 to 2018 von Kuitunen, Ilari, Ponkilainen, Ville T, Iverson, Grant L, Isokuortti, Harri, Luoto, Teemu M, Mattila, Ville M

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Incidence of Neonatal Developmental Dysplasia of the Hip and Late Detection Rates Based on Screening Strategy: A Systematic Review and Meta-analysis von Kuitunen, Ilari, Uimonen, Mikko M., Haapanen, Marjut, Sund, Reijo, Helenius, Ilkka, Ponkilainen, Ville T.

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Why all newborn hip screening programs have same results—a mini review von BM, Matias Vaajala, Pakarinen, Oskari, Helenius, Ilkka, Uimonen, Mikko M, Ponkilainen, Ville T, Kuitunen, Ilari

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Incidence and Characteristics of Midfoot Injuries von Ponkilainen, Ville T., Laine, Heikki-Jussi, Mäenpää, Heikki M, Mattila, Ville M., Haapasalo, Heidi H.

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Regional variations in lumbar spine surgery in Finland von Mäntymäki, Heikki, Ponkilainen, Ville T., Huttunen, Tuomas T., Mattila, Ville M.

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The Development of Lower Limb Amputations in Finland from 1997 to 2018: A Nationwide Retrospective Registry Study von Ponkilainen, Ville T., Vuorlaakso, Miska, Kaartinen, Ilkka, Kiiski, Juha, Saarinen, Eva, Huttunen, Tuomas T., Paloneva, Juha, Mattila, Ville M.

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Incidence of acute neurosurgery for traumatic brain injury in children—a nationwide analysis from 1998 to 2018 von Möttönen, Julius, Ponkilainen, Ville T., Iverson, Grant L., Luoto, Teemu, Mattila, Ville M., Kuitunen, Ilari

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