Nils P. Hailer
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View article: Erratum: Incidence of constrained condylar and hinged knee implants and mid- to long-term survivorship: a register-based study from the Nordic Arthroplasty Register Association (NARA)
Erratum: Incidence of constrained condylar and hinged knee implants and mid- to long-term survivorship: a register-based study from the Nordic Arthroplasty Register Association (NARA) Open
is missing (Erratum) This Erratum relates to the following article:https://doi.org/10.2340/17453674.2025.42999
View article: Distal chevron osteotomies enhance patient-reported outcomes for all severity grades of hallux valgus: a cohort study
Distal chevron osteotomies enhance patient-reported outcomes for all severity grades of hallux valgus: a cohort study Open
Background and purpose: There is limited data on the functional outcome after hallux valgus (HV) surgery. Our study aims to assess 1-year postoperative patient-reported outcomes (PROMs) after a chevron osteotomy (CO) for 3 severity levels,…
View article: Nonsurgical Treatment Versus Surgical Treatment in Displaced Metacarpal Spiral Fractures: Extended 4.5-Year Follow-Up of a Previously Randomized Controlled Trial
Nonsurgical Treatment Versus Surgical Treatment in Displaced Metacarpal Spiral Fractures: Extended 4.5-Year Follow-Up of a Previously Randomized Controlled Trial Open
Therapeutic II.
View article: Fractures with complex fracture patterns are associated with increased rate of subsequent conversion to total knee arthroplasty after a tibial plateau fracture: an observational cohort study of 12,012 patients from the Swedish Fracture Register
Fractures with complex fracture patterns are associated with increased rate of subsequent conversion to total knee arthroplasty after a tibial plateau fracture: an observational cohort study of 12,012 patients from the Swedish Fracture Register Open
Background Tibial plateau fractures (TPFs) can be associated with development of significant joint degeneration, which can lead to functional impairment and pain severe enough to necessitate conversion to total knee arthroplasty (TKA). The…
View article: Uncemented hip arthroplasty and denosumab: increased postoperative dipeptide concentrations and identification of potential new bone turnover biomarkers
Uncemented hip arthroplasty and denosumab: increased postoperative dipeptide concentrations and identification of potential new bone turnover biomarkers Open
Denosumab is a potent antagonist of RANKL and is widely used to treat severe postmenopausal osteoporosis. Using high-resolution mass spectrometry (HRMS), we aimed to identify molecular mediators associated with the rapid reactivation of os…
View article: Trabecular-bone mimicking osteoconductive collagen scaffolds: an optimized 3D printing approach using freeform reversible embedding of suspended hydrogels
Trabecular-bone mimicking osteoconductive collagen scaffolds: an optimized 3D printing approach using freeform reversible embedding of suspended hydrogels Open
View article: Incidence of constrained condylar and hinged knee implants and mid- to long-term survivorship: a register-based study from the Nordic Arthroplasty Register Association (NARA)
Incidence of constrained condylar and hinged knee implants and mid- to long-term survivorship: a register-based study from the Nordic Arthroplasty Register Association (NARA) Open
Background and purpose: In complex primary total knee arthroplasty (TKA), constrained condylar knee (CCK) or rotating hinge knee (RHK) designs may be required to provide stability or address bony deficiencies. We analyzed trends in inciden…
View article: Interaction Between Multimorbidity and Hip Fracture Surgery Leads to Excess Risk of Infection: A Danish Registry-Based Cohort Study of 92,599 Patients With Hip Fracture
Interaction Between Multimorbidity and Hip Fracture Surgery Leads to Excess Risk of Infection: A Danish Registry-Based Cohort Study of 92,599 Patients With Hip Fracture Open
Multimorbidity and HF surgery interact synergistically, which substantially increases the infection risk. The interaction effect increased with multimorbidity level. Our findings highlight the potential benefits of implementing more target…
View article: Mortality and reoperations following treatment of acetabular fractures in patients ≥ 70 years: a retrospective cohort study of 247 patients
Mortality and reoperations following treatment of acetabular fractures in patients ≥ 70 years: a retrospective cohort study of 247 patients Open
Background and purpose: Evidence for long-term outcomes following acetabular fractures in older adults is limited. We aimed to evaluate mortality, complications, and need for subsequent surgical procedures in operatively and nonoperatively…
View article: Ionic silver coating of orthopedic implants may impair osteogenic differentiation and mineralization
Ionic silver coating of orthopedic implants may impair osteogenic differentiation and mineralization Open
Silver (Ag) possesses potent antimicrobial properties and is used as a coating for medical devices. The impact of silver ions released from orthopedic implants on the differentiation and osteoid formation of different osteogenic cells has …
View article: Never mind the bug: no differences in infection-free survival after periprosthetic joint infections with Staphylococcus aureus, Coagulase-negative Staphylococcus, or Streptococcus
Never mind the bug: no differences in infection-free survival after periprosthetic joint infections with Staphylococcus aureus, Coagulase-negative Staphylococcus, or Streptococcus Open
Background Periprosthetic joint infection (PJI) is a devastating complication following arthroplasty of the hip or knee joint and can be challenging to treat, depending on the underlying pathogen. There is still a debate whether streptococ…
View article: Treatment of Periprosthetic Joint Infection with Intravenous Vancomycin: Do We Hit the Target?
Treatment of Periprosthetic Joint Infection with Intravenous Vancomycin: Do We Hit the Target? Open
Background/objectives: Vancomycin is commonly used in the treatment of periprosthetic joint infection (PJI), and trough concentrations are measured to ascertain that they are within the therapeutic range. It has not been investigated what …
View article: Editorial: New insights in prosthetic joint infections
Editorial: New insights in prosthetic joint infections Open
View article: Fracture-related infections after osteosynthesis for hip fracture are associated with higher mortality: A retrospective single-center cohort study
Fracture-related infections after osteosynthesis for hip fracture are associated with higher mortality: A retrospective single-center cohort study Open
Background and purpose: Fracture-related infections (FRIs) after osteosynthesis for hip fractures have not been thoroughly investigated. Our primary aim was to assess the association between FRIs and mortality after osteosynthesis for hip …
View article: Continuous periprosthetic bone loss around the TOP® cup and inferior survival rate at an 8-year follow-up: a prospective cohort study
Continuous periprosthetic bone loss around the TOP® cup and inferior survival rate at an 8-year follow-up: a prospective cohort study Open
Background The trabeculae-oriented pattern (TOP ® ) cup was designed to minimize acetabular periprosthetic bone loss. In our previous prospective study comprising 30 patients with a two-year follow-up we found a substantial decrease in per…
View article: Is 18F-fluoride PET/CT an Accurate Tool to Diagnose Loosening After Total Joint Arthroplasty?
Is 18F-fluoride PET/CT an Accurate Tool to Diagnose Loosening After Total Joint Arthroplasty? Open
Background Several studies using positron emission tomography (PET) show highly elevated periprosthetic bone uptake of fluorine-18 sodium fluoride ( 18 F-fluoride), suggestive of implant loosening after arthroplasty. Focus so far has been …
View article: Prediction of Early Adverse Events After <scp>THA</scp>: A Comparison of Different Machine‐Learning Strategies Based on 262,356 Observations From the Nordic Arthroplasty Register Association (<scp>NARA</scp>) Dataset
Prediction of Early Adverse Events After <span>THA</span>: A Comparison of Different Machine‐Learning Strategies Based on 262,356 Observations From the Nordic Arthroplasty Register Association (<span>NARA</span>) Dataset Open
Objective Preoperative risk prediction models can support shared decision‐making before total hip arthroplasties (THAs). Here, we compare different machine‐learning (ML) approaches to predict the six‐month risk of adverse events following …
View article: Demographics and risk for containment surgery in patients with unilateral Legg–Calvé–Perthes disease: a national population-based cohort study of 309 patients from the Swedish Pediatric Orthopedic Quality Register
Demographics and risk for containment surgery in patients with unilateral Legg–Calvé–Perthes disease: a national population-based cohort study of 309 patients from the Swedish Pediatric Orthopedic Quality Register Open
Background and purpose: It is controversial as to which patients affected by Legg–Calvé–Perthes disease (LCPD) benefit from containment surgery. This population-based study based on data from a national quality registry aims to assess the …
View article: A Simple and Cost-Effective FeCl<sub>3</sub>-Catalyzed Functionalization of Cellulose Nanofibrils: Toward Adhesive Nanocomposite Materials for Medical Implants
A Simple and Cost-Effective FeCl<sub>3</sub>-Catalyzed Functionalization of Cellulose Nanofibrils: Toward Adhesive Nanocomposite Materials for Medical Implants Open
In the present work, we explored Lewis acid catalysis, via FeCl3, for the heterogeneous surface functionalization of cellulose nanofibrils (CNFs). This approach, characterized by its simplicity and efficiency, facilitates the am…
View article: Risk of conversion to total knee arthroplasty after surgically treated tibial plateau fractures: an observational cohort study of 439 patients
Risk of conversion to total knee arthroplasty after surgically treated tibial plateau fractures: an observational cohort study of 439 patients Open
Background and purpose: We aimed to assess joint failure rate, i.e., subsequent conversion to TKA after surgical treatment of a tibial plateau fracture (TPF). Secondary aims were to explore the association between joint failure and fractur…
View article: Surgical and non-surgical treatment for fully displaced lateral clavicle fractures have similar outcomes: An observational register study of 113 patients
Surgical and non-surgical treatment for fully displaced lateral clavicle fractures have similar outcomes: An observational register study of 113 patients Open
Two thirds of surgically treated patients with displaced lateral clavicle fractures underwent two procedures. The need for delayed surgical treatment in non-surgically treated patients was low and PROM was similar in both treatment groups.…
View article: Concentrations of Cobalt, Chromium and Titanium and Immunological Changes after Primary Total Knee Arthroplasty—A Cohort Study with an 18-Year Follow-Up
Concentrations of Cobalt, Chromium and Titanium and Immunological Changes after Primary Total Knee Arthroplasty—A Cohort Study with an 18-Year Follow-Up Open
Background: Total knee arthroplasty (TKA) generates elevated metal ion concentrations, but long-term changes in the concentrations of cobalt (Co), chromium (Cr) and titanium (Ti) after primary TKA and potential subsequent immune system act…
View article: Reoperation-free survival after hip screws or hip arthroplasty for undisplaced femoral neck fractures in the elderly
Reoperation-free survival after hip screws or hip arthroplasty for undisplaced femoral neck fractures in the elderly Open
Aims Our primary aim was to assess reoperation-free survival at one year after the index injury in patients aged ≥ 75 years treated with internal fixation (IF) or arthroplasty for undisplaced femoral neck fractures (uFNFs). Secondary outco…
View article: The True Dislocation Incidence following Elective Total Hip Replacement in Sweden: How Does It Relate to the Revision Rate?
The True Dislocation Incidence following Elective Total Hip Replacement in Sweden: How Does It Relate to the Revision Rate? Open
(1) Background: The true dislocation incidence following THA is difficult to ascertain in population-based cohorts. In this study, we explored the cumulative dislocation incidence (CDI), the relationship between the incidence of dislocatio…
View article: Analysis of fracture-related infections from Swedish insurance claims between 2011 and 2021
Analysis of fracture-related infections from Swedish insurance claims between 2011 and 2021 Open
View article: Early Staphylococcal Periprosthetic Joint Infection (PJI) Treated with Debridement, Antibiotics, and Implant Retention (DAIR): Inferior Outcomes in Patients with Staphylococci Resistant to Rifampicin
Early Staphylococcal Periprosthetic Joint Infection (PJI) Treated with Debridement, Antibiotics, and Implant Retention (DAIR): Inferior Outcomes in Patients with Staphylococci Resistant to Rifampicin Open
It is unknown how rifampicin resistance in staphylococci causing a periprosthetic joint infection (PJI) affects outcomes after debridement, antibiotics, and implant retention (DAIR). We thus aimed to compare the risk of relapse in DAIR-tre…
View article: Incidence of Rifampicin Resistance in Periprosthetic Joint Infection: A Single-Centre Cohort Study on 238 Patients
Incidence of Rifampicin Resistance in Periprosthetic Joint Infection: A Single-Centre Cohort Study on 238 Patients Open
Background. Rifampicin is a pillar in the treatment of periprosthetic joint infection (PJI). However, rifampicin resistance is an increasing threat to PJI treatment. This study explores the incidence of rifampicin-resistant bacteria over t…
View article: Register-based randomized trials: the new power-tool in orthopedic research?
Register-based randomized trials: the new power-tool in orthopedic research? Open
View article: Increasing risk of revision due to infection after primary total hip arthroplasty: results from the Nordic Arthroplasty Register Association
Increasing risk of revision due to infection after primary total hip arthroplasty: results from the Nordic Arthroplasty Register Association Open
Background and purpose: The incidence of periprosthetic joint infection after total hip arthroplasty (THA) may be increasing. We performed time-trend analyses of risk, rates, and timing of revision due to infection after primary THAs in th…
View article: Is the Robinson classification of clavicle fractures accurate enough within the setting of the Swedish Fracture Register?
Is the Robinson classification of clavicle fractures accurate enough within the setting of the Swedish Fracture Register? Open
The accuracy of the classification of clavicle fractures in the SFR was only fair, whereas the inter- and intraobserver agreement among the expert raters was almost perfect. Accuracy in the SFR may be improved if the classification instruc…