OOIR: Observatory of International Research

Papers

(The TQCC of Acta Orthopaedica is 6. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-05-01 to 2024-05-01.)

Article	Citations
Impact of the COVID-19 pandemic on orthopedic trauma workload in a London level 1 trauma center: the “golden month”	85
Presenting artificial intelligence, deep learning, and machine learning studies to clinicians and healthcare stakeholders: an introductory reference with a guideline and a Clinical AI Research (CAIR)	44
Impact of the COVID-19 pandemic on paediatric orthopaedic trauma workload in central London: a multi-centre longitudinal observational study over the “golden weeks”	43
Physical child abuse demands increased awareness during health and socioeconomic crises like COVID-19	39
Automated classification of hip fractures using deep convolutional neural networks with orthopedic surgeon-level accuracy: ensemble decision-making with antero-posterior and lateral radiographs	38
Wide range of applications for machine-learning prediction models in orthopedic surgical outcome: a systematic review	38
Orthopedic surgery residents’ perception of online education in their programs during the COVID-19 pandemic: should it be maintained after the crisis?	37
Ankle fracture classification using deep learning: automating detailed AO Foundation/Orthopedic Trauma Association (AO/OTA) 2018 malleolar fracture identification reaches a high degree of correct clas	32
Systematic review of complications with externally controlled motorized intramedullary bone lengthening nails (FITBONE and PRECICE) in 983 segments	31
Pain, osteolysis, and periosteal reaction are associated with the STRYDE limb lengthening nail: a nationwide cross-sectional study	28
Availability and reporting quality of external validations of machine-learning prediction models with orthopedic surgical outcomes: a systematic review	28
Can MRI differentiate between atypical cartilaginous tumors and high-grade chondrosarcoma? A systematic review	25
National trends in lumbar spine decompression and fusion surgery in Finland, 1997–2018	24
Which Oxford Knee Score level represents a satisfactory symptom state after undergoing a total knee replacement?	23
Dislocation of hemiarthroplasty after hip fracture is common and the risk is increased with posterior approach: result from a national cohort of 25,678 individuals in the Swedish Hip Arthroplasty Regi	22
Severely injured patients do not disappear in a pandemic: Incidence and characteristics of severe injuries during COVID-19 lockdown in Finland	21
How deadly is a fracture distal to the hip in the elderly? An observational cohort study of 11,799 femoral fractures in the Swedish Fracture Register	21
Randomized trial comparing suture button with single 3.5 mm syndesmotic screw for ankle syndesmosis injury: similar results at 2 years	20
New 3-dimensional implant application as an alternative to allograft in limb salvage surgery: a technical note on 10 cases	20
The rate of 2nd revision for shoulder arthroplasty as analyzed by the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR)	19
The STRYDE limb lengthening nail is susceptible to mechanically assisted crevice corrosion: an analysis of 23 retrieved implants	19
The incidence of pelvic fractures and related surgery in the Finnish adult population: a nationwide study of 33,469 patients between 1997 and 2014	19
Epidemiology and mortality of pelvic and femur fractures—a nationwide register study of 417,840 fractures in Sweden across 16 years: diverging trends for potentially lethal fractures	19
Impact of socioeconomic status on the 90- and 365-day rate of revision and mortality after primary total hip arthroplasty: a cohort study based on 103,901 patients with osteoarthritis from national da	18
A vitamin E blended highly cross-linked polyethylene acetabular cup results in less wear: 6-year results of a randomized controlled trial in 199 patients	17

Non-surgical treatment before hip and knee arthroplasty remains underutilized with low satisfaction regarding performance of work, sports, and leisure activities	17
Do hip precautions after posterior-approach total hip arthroplasty affect dislocation rates? A systematic review of 7 studies with 6,900 patients	17
Study protocol: The DUALITY trial—a register-based, randomized controlled trial to investigate dual mobility cups in hip fracture patients	16
Measurement properties of UCLA Activity Scale for hip and knee arthroplasty patients and translation and cultural adaptation into Danish	16
Delayed surgery versus nonoperative treatment for hip fractures in post-COVID-19 arena: a retrospective study of 145 patients	15
Impact of malnutrition and vitamin deficiency in geriatric patients undergoing orthopedic surgery	15
Custom-made 3D-printed cup-cage implants for complex acetabular revisions: evaluation of pre-planned versus achieved positioning and 1-year migration data in 10 patients	15
The impact of COVID-19 on the future of orthopaedic training in the UK	15
Combined massive allograft and intramedullary vascularized fibula transfer: the Capanna technique for treatment of congenital pseudarthrosis of the tibia	13
Optimized medial unicompartmental knee arthroplasty outcome: learning from 20 years of propensity score matched registry data	13
Effectiveness of hallux valgus surgery on patient quality of life: a systematic review and meta-analysis	13
Impact of the COVID-19 pandemic on emergency and elective hip surgeries in Norway	13
Development of the annual incidence rate of fracture in children 1980–2018: a population-based study of 32,375 fractures	13
Clinical and radiological outcomes of robotic-assisted versus conventional total knee arthroplasty: a systematic review and meta-analysis of randomized controlled trials	13
Rotator cuff repair with biological graft augmentation causes adverse tissue outcomes	13
HipSim — hip fracture surgery simulation utilizing the Learning Curve–Cumulative Summation test (LC-CUSUM)	12
Pexidartinib improves physical functioning and stiffness in patients with tenosynovial giant cell tumor: results from the ENLIVEN randomized clinical trial	12
The impact of socioeconomic status on the utilization of total hip arthroplasty during 1995–2017: 104,055 THA cases and 520,275 population controls from national databases in Denmark	12
30-day and 1-year mortality after skeletal fractures: a register study of 295,713 fractures at different locations	12
Bariatric surgery prior to total knee arthroplasty is not associated with lower risk of revision: a register-based study of 441 patients	12
Bacteriophage therapy cures a recurrentEnterococcus faecalisinfected total hip arthroplasty? A case report	12
Machine learning algorithms trained with pre-hospital acquired history-taking data can accurately differentiate diagnoses in patients with hip complaints	12
Comparison of outcome between nonoperative and operative treatment of medial epicondyle fractures	12
Variation and trends in reasons for knee replacement revision: a multi-registry study of revision burden	12
The learning curve of the direct anterior approach is 100 cases: an analysis based on 15,875 total hip arthroplasties in the Dutch Arthroplasty Register	12
The rise of registry-based research: a bibliometric analysis	12
Direct superior approach versus posterolateral approach in total hip arthroplasty: a randomized controlled trial on early outcomes on gait, risk of fall, clinical and self-reported measurements	12
Similar risk of complete revision for infection with single-dose versus multiple-dose antibiotic prophylaxis in primary arthroplasty of the hip and knee: results of an observational cohort study in th	11
Arthroscopic partial meniscectomy: did it ever work?	11
Precision of CT-based micromotion analysis is comparable to radiostereometry for early migration measurements in cemented acetabular cups	11
Intra-articular injection with Autologous Conditioned Plasma does not lead to a clinically relevant improvement of knee osteoarthritis: a prospective case series of 140 patients with 1-year follow-up	11
Redeployment of the trainee orthopaedic surgeon during COVID-19: a fish out of water?	11
10-year evolution of day-case hip and knee arthroplasty: a Danish nationwide register study of 166,833 procedures from 2010 to 2020	11
Total hip arthroplasties in the Dutch Arthroplasty Register (LROI) and the Nordic Arthroplasty Register Association (NARA): comparison of patient and procedure characteristics in 475,685 cases	11
Time trends in pediatric fractures in a Swedish city from 1950 to 2016	10
Low revision rate of dual mobility cups after arthroplasty for acute hip fractures: report of 11,857 hip fractures in the Dutch Arthroplasty Register (2007–2019)	10
Uncemented or cemented stems in first-time revision total hip replacement? An observational study of 867 patients including assessment of femoral bone defect size	10
Increasing but levelling out risk of revision due to infection after total hip arthroplasty: a study on 108,854 primary THAs in the Norwegian Arthroplasty Register from 2005 to 2019	10
Study protocol: Effectiveness of dual-mobility cups compared with uni-polar cups for preventing dislocation after primary total hip arthroplasty in elderly patients — design of a randomized controlled	10
Nonoperative management of hip fractures in very frail elderly patients may lead to a predictable short survival as part of advance care planning	10
Implant survival of 2,723 vitamin E-infused highly crosslinked polyethylene liners in total hip arthroplasty: data from the Finnish Arthroplasty Register	10
Similar early mortality risk after cemented compared with cementless total hip arthroplasty for primary osteoarthritis: data from 188,606 surgeries in the Nordic Arthroplasty Register Association data	10
Does the Covid-19 pandemic affect ankle fracture incidence? Moderate decrease in Sweden	10
The implications of an aging population and increased obesity for knee arthroplasty rates in Sweden: a register-based study	10
Predicting the mechanical hip–knee–ankle angle accurately from standard knee radiographs: a cross-validation experiment in 100 patients	10
Isometric hip strength impairments in patients with hip dysplasia are improved but not normalized 1 year after periacetabular osteotomy: a cohort study of 82 patients	10
Risk factors for prosthetic joint infections following total hip arthroplasty based on 33,337 hips in the Finnish Arthroplasty Register from 2014 to 2018	10
Reduced wear in vitamin E-infused highly cross-linked polyethylene cups: 5-year results of a randomized controlled trial	10
Risk of total knee replacement after proximal tibia fracture: a register-based study of 7,841 patients	9
The European Bone and Joint Infection Society definition of periprosthetic joint infection is meaningful in clinical practice: a multicentric validation study with comparison with previous definitions	9

Good results at 2-year follow-up of a custom-made triflange acetabular component for large acetabular defects and pelvic discontinuity: a prospective case series of 50 hips	9
Mortality and revision risk after femoral neck fracture: comparison of internal fixation for undisplaced fracture with arthroplasty for displaced fracture: a population-based study from Danish Nationa	9
Reasons for revision are associated with rerevised total knee arthroplasties: an analysis of 8,978 index revisions in the Dutch Arthroplasty Register	9
Are functional outcomes and early pain affected by discharge on the day of surgery following total hip and knee arthroplasty?	9
Impact of patient and prosthesis characteristics on common reasons for total knee replacement revision: a registry study of 36,626 revision cases from Australia, Sweden, and USA	9
Patient satisfaction after total knee replacement—still a challenge	9
Complications common in motorized intramedullary bone transport for non-infected segmental defects: a retrospective review of 15 patients	9
Simulation-based skills training in non-performing orthopedic surgeons: skills acquisition, motivation, and flow during the COVID-19 pandemic	8
Socioeconomic status and use of analgesic drugs before and after primary hip arthroplasty: a population-based cohort study of 103,209 patients during 1996–2018	8
Challenges and adaptations in training during pandemic COVID-19: observations by an orthopedic resident in Singapore	8
Precision of low-dose CT-based micromotion analysis technique for the assessment of early acetabular cup migration compared with gold standard RSA: a prospective study of 30 patients up to 1 year	8
Knee and foot contracture occur earliest in children with cerebral palsy: a longitudinal analysis of 2,693 children	8
Development of hip displacement in cerebral palsy: a longitudinal register study of 1,045 children	8
Dutch Guideline on Knee Arthroscopy Part 1, the meniscus: a multidisciplinary review by the Dutch Orthopaedic Association	8
Virus transmission during orthopedic surgery on patients with COVID-19 – a brief narrative review	8
Postoperative delirium is a risk factor for complications and poor outcome after total hip and knee arthroplasty	8
Cognitive training for the prevention of skill decay in temporarily non-performing orthopedic surgeons	8
International variation in distribution of ASA class in patients undergoing total hip arthroplasty and its influence on mortality: data from an international consortium of arthroplasty registries	8
Low arthroplasty survival after treatment for proximal humerus fracture sequelae: 3,245 shoulder replacements from the Nordic Arthroplasty Register Association	8
Reoperations after decompression with or without fusion for L4–5 spinal stenosis with or without degenerative spondylolisthesis: a study of 6,532 patients in Swespine, the national Swedish spine regis	8
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 20	8
A roadmap to surgery in osteogenesis imperfecta: results of an international collaboration of patient organizations and interdisciplinary care teams	8
Influence of day of surgery and prediction of LOS > 2 days after fast-track hip and knee replacement	8
Ankle fractures in Finland: 118,929 operatively treated between 1987 and 2019	7
Interpretation threshold values for the Oxford Knee Score in patients undergoing unicompartmental knee arthroplasty	7
Increased failure rates after the introduction of the TFNA proximal femoral nail for trochanteric fractures: implant related or learning curve effect?	7
The anatomical SP-CL stem demonstrates a non-progressing migration pattern in the first year: a low dose CT-based migration study in 20 patients	7
Large variability in recommendations for return to daily life activities after knee arthroplasty among Dutch hospitals and clinics: a cross-sectional study	7
Deep neural networks with promising diagnostic accuracy for the classification of atypical femoral fractures	7
Study protocol for discharge on day of surgery after hip and knee arthroplasty from the Center for Fast-track Hip and Knee Replacement	7
Hip dysplasia is not uncommon but frequently overlooked: a cross-sectional study based on radiographic examination of 1,870 adults	7
Guidelines for a structured manuscript: Statistical methods and reporting in biomedical research journals	7
Orthopedic surgical procedures in 3,305 children and young adults with cerebral palsy: a register-based cohort study	7
Highly cross-linked polyethylene still outperforms conventional polyethylene in THA: 10-year RSA results	7
Effects of tourniquet inflation on peri- and postoperative cefuroxime concentrations in bone and tissue	7
The COVID-19 pandemic in Singapore: what does it mean for arthroplasty?	7
Machine learning classifiers do not improve prediction of hospitalization > 2 days after fast-track hip and knee arthroplasty compared with a classical statistical risk model	7
Short-term functional outcome after fast-track primary total knee arthroplasty: analysis of 623 patients	7
Opioid prescribing patterns after arthroplasty of the knee and hip: a Dutch nationwide cohort study from 2013 to 2018	7
Less improvement following meniscal repair compared with arthroscopic partial meniscectomy: a prospective cohort study of patient-reported outcomes in 150 young adults at 1- and 5-years’ follow-up	7
A comparison of uncemented short versus standard stem length in total hip arthroplasty: results from the Dutch Arthroplasty Register	6
Development of a diagnostic algorithm identifying cases of dislocation after primary total hip arthroplasty—based on 31,762 patients from the Danish Hip Arthroplasty Register	6
Influence of body mass index and age on day-of-surgery discharge, prolonged admission, and 90-day readmission after fast-track unicompartmental knee arthroplasty	6
Are conventional microbiological diagnostics sufficiently expedient in the era of rapid diagnostics? Evaluation of conventional microbiological diagnostics of orthopedic implant-associated infections	6
Long-term migration of a cementless stem with different bioactive coatings. Data from a “prime” RSA study: lessons learned	6
Complications and risk factors of intramedullary bone lengthening nails: a retrospective multicenter cohort study of 314 FITBONE and PRECICE nails	6
Preparing an orthopedic department for COVID-19	6
A matched comparison of cementless unicompartmental and total knee replacement outcomes based on the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man	6
Similar periprosthetic joint infection rates after and before a national infection control program: a study of 45,438 primary total knee arthroplasties	6
Increased rate of complications in myasthenia gravis patients following hip and knee arthroplasty: a nationwide database study in the PearlDiver Database on 257,707 patients	6
Sex differences in incidence rate, and temporal changes in surgical management and adverse events after hip fracture surgery in Denmark 1997–2017: a register-based study of 153,058 hip fracture patien	6
Incidence and risk factors of intraoperative periprosthetic femoral fractures during primary total hip arthroplasty: 218,423 cases reported to the Norwegian Arthroplasty Register between 1987 and 2020	6
Awareness of performance on outcomes after total hip and knee arthroplasty among Dutch orthopedic surgeons: how to improve feedback from arthroplasty registries	6
Knee flexion contracture impacts functional mobility in children with cerebral palsy with various degree of involvement: a cross-sectional register study of 2,838 individuals	6
A matched comparison of the patient-reported outcome measures of 38,716 total and unicompartmental knee replacements: an analysis of linked data from the National Joint Registry of England, Northern I	6
Development of acetabular anteversion in children with normal hips and those with developmental dysplasia of the hip: a cross-sectional study using magnetic resonance imaging	6
Back pain is also improved by lumbar disc herniation surgery	6
A projection of primary knee replacement in Denmark from 2020 to 2050	6
Intraoperatively local infiltration anesthesia in hemiarthroplasty patients reduces the needs of opioids: a randomized, double-blind, placebo-controlled trial with 96 patients in a fast-track hip frac	6
Population-based 10-year cumulative revision risks after hip and knee arthroplasty for osteoarthritis to inform patients in clinical practice: a competing risk analysis from the Dutch Arthroplasty Reg	6
How long does an elbow replacement last? A systematic review and meta-analysis of case-series and national registry reports with more than 10 years of follow-up	6
Outcomes after arthroscopic revision surgery for anterior cruciate ligament injuries	6
Salphage: salvage bacteriophage therapy for a recalcitrant Klebsiella pneumoniae prosthetic shoulder infection — a case report	6
Outcome at 1 year in patients with femoral shaft fractures treated with intramedullary nailing or skeletal traction in a low-income country: a prospective observational study of 187 patients in Malawi	6
Tibial lengthening using a retrograde magnetically driven intramedullary lengthening device in 10 patients with preexisting ankle and hindfoot fusion	6