This week, the 100th scientific publication by...
Prof RPA Janssen MD PhD has been invited as...
Prof RPA Janssen MD PhD is invited as faculty...
RPA Janssen MD has received his PhD title at School CAPHRI, Faculty of Health, Medicine and Life Sciences of Maastricht University, The Netherlands. He has written a PhD thesis on anterior cruciate ligament reconstruction of the knee with hamstring...
Podcast over kruisband knie
Abstract Background: Different types of grafts can be used for anterior cruciate ligament reconstruction (ACLR). There is little published data regarding skeletally immature patients. The purpose of this systematic review was to assess the clinical outcomes and...
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https://www.jmir.org/2023/1/e40504
Abstract Objectives To identify highly-ranked features related to clinicians' diagnosis of clinically relevant knee osteoarthritis (OA). Methods General practitioners (GPs) and secondary care physicians (SPs) were recruited to evaluate 5-10 years follow-up clinical...
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Abstract PURPOSE: Meniscus tears are one of the most frequent orthopedic knee injuries, which are currently often treated performing meniscectomy. Clinical concerns comprise progressive degeneration of the meniscus tissue, a change in knee biomechanics, and an early...
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Abstract Background: Anterior cruciate ligament (ACL) rupture is a very common knee injury in the sport active population. There is much debate on which treatment (operative or non-operative) is best for the individual patient. In order to give a more personalized...
Abstract Background: Diagnosing anterior cruciate ligament (ACL) injuries in children and adolescents are more challenging compared to adults. Delayed diagnosis may result in meniscal or chondral injuries. The aim of this study was to deter- mine the diagnostic values...
Abstract OBJECTIVE: To compare outcomes from arthroscopic partial meniscectomy versus physical therapy in young patients with traumatic meniscal tears. METHODS: We conducted a multicentre, open-labelled, randomised controlled trial in patients aged 18-45 years, with a...
Abstract Purpose: To evaluate the effectiveness of a tailored intervention to reduce low value MRIs and arthroscopies among patients ≥ 50 years with degenerative knee disease in 13 Dutch orthopaedic centers (intervention group) compared with all other Dutch...
Abstract Background: Early diagnosis of knee osteoarthritis (OA) is important in managing this disease, but such an early diagnostic tool is still lacking in clinical practice. The purpose of this study was to develop diagnostic models for early stage knee OA based on...
Integration of an implant with the surrounding tissue is a major challenge in cartilage regeneration. It is usually assessed with in vivo animal studies at the end-stage of implant development. To reduce animal experimentation and at the same time increase screening...
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Link to article https://rdcu.be/cy3eY
Abstract Purpose The purpose of this study was to assess in which proportion of patients with degenerative knee disease aged 50+ in whom a knee arthroscopy is performed, no valid surgical indication is reported in medical records, and to explore pos- sible...
Abstract Objective: Osteoarthritis (OA) is a chronic joint disease characterized by progressive degradation of cartilage. It affects more than 10% of the people aged over 60 years-old worldwide with a rising prevalence due to the increasingly aging population. OA...
After anterior cruciate ligament (ACL) rupture, reconstructive surgery with a hamstring tendon autograft is often performed. Despite overall good results, ACL re-rupture occurs in up to 10% of the patient population, increasing to 30% of the cases for patients aged...
The purpose of this investigation was to evaluate systematically the literature concerning biopsy, MRI signal to noise quotient (SNQ) and clinical outcomes in graft-maturity assessment after autograft anterior cruciate ligament reconstruction (ACLR) and their possible...
Abstract Objectives: Although there is a general focus on early diagnosis and treatment of hip osteoarthritis, there are no validated diagnostic criteria for early-stage hip OA. The current study aimed to take the first steps in developing diagnostic criteria for...
Abstract: Objective: The purpose of this study was to evaluate the added value of radiographs for diagnosing knee osteoarthritis (KOA) by general practitioners (GPs) and secondary care physicians (SPs). Methods: Seventeen GPs and nineteen SPs were recruited to...
Abstract Objective Sodium concentration is responsible for (at least part of) the stiffness of articular cartilage due to the osmotic pressure it generates. Therefore, we hypothesized that we could use sodium MRI to approximate the stiffness of cartilage to assess...
Open Access
Abstract Background: Physiotherapy is a proven effective treatment strategy after total knee and hip arthroplasty (TKA/THA), however there is considerable practice variation regarding its timing, content and duration. This study aims to compare the (cost-)...
Abstract To reduce animal experimentation and to overcome translational issues in cartilage tissue engineering, there is a need to develop an ex vivo human tissue-based approach. This study aims to demonstrate that a human osteochondral explant at different...
Abstract Purpose: Upon anterior cruciate ligament (ACL) rupture, reconstruction is often required, with the hamstring tendon autograft as the most widely used treatment. Post-operative autograft remodeling enhances the risk of graft rupture, which occurs in up to...
Abstract BACKGROUND: One of the main determinants of treatment satisfaction after total knee arthroplasty (TKA) is the fulfillment of preoperative expectations. For optimal expectation management, it is useful to accurately predict the treatment result. Multiple...
Abstract The management of anterior cruciate ligament (ACL) injuries in the skeletally immature patient is an area of controversy. The purpose of this survey is to inventory the current state of care for pediatric ACL injuries in the Netherlands. This survey was...
Abstract PURPOSE: The purpose of this study was to assess which factors were associated with the implementation of "Choosing Wisely" recommendations to refrain from routine MRI and arthroscopy use in degenerative knee disease. METHODS: ...
Abstract Unfulfilled preoperative expectations have a strong influence on the outcome after total knee arthroplasty (TKA). More insight into determinants of the level of expectations is useful in identifying patients at risk for having expectations of the treatment...
Abstract BACKGROUND: The Pedi International Knee Documentation Committee (IKDC) and Knee Injury and Osteoarthritis Outcome Score (KOOS) child are validated questionnaires for children with knee disorders. The aim of this study was to translate these...
Abstract Background and purpose - Improvement of physical function is one of the main treatment goals in severe hip osteoarthritis (OA) patients. The Osteoarthritis Research Society International (OARSI) has identified a core set of performance-based tests to assess...
Abstract Background: One out of five patients is unsatisfied to some extent after total knee arthroplasty (TKA). Unmet expectations are the main driver of post-operative dissatisfaction. Improved pre-operative education on realistic expectations for long-term...
Abstract Purpose The Osteoarthritis Research Society International has identi ed a core set of performance-based tests of physi- cal function for use in people with knee osteoarthritis (OA). The core set consists of the 30-second chair stand test (30-s...
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Abstract PURPOSE: To determine the face and construct validity as well as educational value and user-friendliness of the Simendo knee arthroscopy virtual reality simulator. METHODS: Sixty participants were recruited and equally divided into novices (0...
Abstract Introduction The rate of satisfaction after total knee arthroplasty (TKA) is consistently reported around 80%, leaving 1 in 5 patients unsatisfied to some extent. Fulfillment of expectations is reported as the strongest predictor of treatment satisfaction. In...
The Pellegrini-Stieda lesion is a calcification on the medial side of the knee. The origin of this tissue is controversial. The purpose of our study is to investigate the origin of the Pellegrini-Stieda lesion using conventional radiography as to recreate the...
ABSTRACT OBJECTIVE: To investigate the clinical outcomes after hamstring tendon autograft ACL reconstruction with accelerated, brace-free rehabilitation. DESIGN: Systematic review according to PRISMA guidelines. DATA SOURCES: Embase, Medline Ovid, Web...
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AIMS: The aim of this study was to assess the current available evidence about when patients might resume driving after elective, primary total hip (THA) or total knee arthroplasty (TKA) undertaken for osteoarthritis (OA). MATERIALS AND METHODS: In February 2016,...
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ABSTRACT Purpose: Prediction of hamstring tendon autograft size facilitates preoperative planning of knee ligament surgery and may reduce the need for allografts in complex knee reconstructions. The aim of this study was to analyze whether length and diameter...
E-learning module for physiotherapists on anterior cruciate ligament anatomy, diagnosis, rehabilitation and return to sports (Dutch only).
This article describes the role of gait analysis and gait training in the treatment of patients with osteoarthritis based on international guidelines. It is the first piolt study of PhD students J. Tolk and F. Brooymans on gait in osteoarthritis.
Purpose: A review is provided on the existing knowledge about the specific healing phases of the intra-articular hamstring tendon graft used for ACL reconstruction. Differences between human and animal in-vivo studies are explained and implications for the...
Preoperative planning in total knee arthroplasty with intramedullary guiding systems requires the measurement of the femoral mechanical–anatomical angle (FMAA) for optimal alignment correction. The main goal of this study was to assess the agreement between two...
In 2012, the National Anterior Cruciate Ligament Committee was founded. RPA Janssen M.D., represented the Dutch Orthopaedic Society (NOV) in this committee. Other participating partners were the Dutch Arthroscopy Society (Nederlandse Vereniging voor...
The journal Physios has invited RPA Janssen to write a review article on the subject of anterior cruciate ligament and knee osteoarthritis. Physios is an independent journal with e-learning credits. The article is only available in Dutch.
An 8 year old boy ruptures his anterior cruciate ligament in sports. MRI demonstrates the lesion. He is treated conservatively with a brace. At the age of 14, MRI shows an anatomic healing of the anterior cruciate ligament. He has no more subjective nor objective...
The study has been awarded Best Poster Award MMC 2011 (see Archives: March 4th, 2011). Out of a consecutive series, 50 conventional TKA were compared with 50 computer assisted TKA.. Except for the use of CAS, all peri- and postoperative interventions were comparable....
Development of a new evidence-based clinical practice guidelines for treatment of "Acute Knee Injury". The latest insights and scientific evidence is provided by leading knee specialists and physiotherapists in the Netherlands.
Analysis of long leg alignment as well as tibial slope after minimal invasive total knee arthroplasty (MIS-TKA) comparing intra- and extramedullary minimal invasive surgery (MIS) tibia instrumentation (Genesis II, Smith & Nephew, Memphis, USA). A prospective...
The primary aim of the study was to evaluate the range of motion and complications after Genesis II total knee arthroplasty with high flexion tibia insert (TKA-HF). Furthermore, difference in knee flexion between high flexion and standard inserts was compared. The...
This is a joint research project between Máxima Medical Center Eindhoven (The Netherlands) and Charité University Hospital Berlin (Germany). Remodelling of human hamstring tendons after anterior cruciate ligament (acl) reconstructions by histological analysis. 67...
Prospective analysis of regeneration of gracilis and semitendinosis tendons after anterior cruciate ligament reconstruction. MRI is performed préoperatively and at 2 weeks, 6 and 12 months postsurgery. The gracilis tendon regenerated in all 22 patients. The...
Purpose: Analysis of long-term clinical and radiological outcome after anterior cruciate ligament (ACL) reconstruction with special attention to knee osteoarthritis and its predictors. Methods: A prospective, consecutive case series of 100 patients. Arthroscopic...
Gentamycin beads are used for muskuloskeletal infections. Gentamycin is released gradually from the beads, and high gentamycin concentrations are achieved only locally. Side effects of gentamycin are rarely to be expected with gentamycin beads since only low amounts...
We present the first case of late spontaneous dislocation of a high flexion polyethylene insert after Genesis II total knee arthroplasty. Dislocation of the fixed insert occurred at 14 months post surgery while walking down a steep aircraft staircase. The total knee...
A tragic airplane crash in 1976 has led to the development of the Advanced Trauma Life Support (ATLS): the current golden standard for the treatment of trauma patients in the acute phase. The founding father of the ATLS, orthopaedic surgeon James K. Styner, has...
We present a case of a 47 year old man with persistent neck complaints after a ski accident. Diagnosis is dislocated fractures of the spinal processes of C6 and C7. The radiological work-up is illustrated.
Arterial complications after anterior cruciate ligament reconstruction (ACLR) are rare. We present a case report of a 44 year old male patient with a subtotal occlusion of the popliteal artery 17 days after anterior cruciate ligament reconstruction. Embolectomy and...
Objective: Ankle sprain is the most frequently occurring acute injury in tennis, accounting for 20–25% of all injuries. In the current paper, we assess the cause of ankle sprain and suggest possibilities to be considered during diagnosis. Methods: We assessed a...
Arterial complications after anterior cruciate ligament (ACL) reconstruction are rare. We present a case report of a 50 year old female patient with simultaneous pseudoaneurysm and thrombosis of the popliteal artery after anterior cruciate ligament reconstruction. The...
We report a case of fatal pulmonary embolus in a consecutive series of 625 anterior cruciate ligament reconstructions. An analysis of the predisposing factors is presented as well as a literature review of thromboprophylaxis in anterior cruciate ligament...
Radial head dislocations usually occur in combination with ulna fractures (Monteggia fracture). Dislocation of the radial head is to anterior, lateral or posterior. However, dislocations may be isolated lesions; usually in children betwen 2-7 years of age with an...
We present a case report of a pseudoaneurysm of the popliteal artery after anterior cruciate ligament reconstruction using a bicortical tibial screw fixation 12 days after surgery. Surgical exploration and repair of an intimal lesion of the popliteal artery was...
We reviewed 21 patients with Mason type-III fractures of the radial head treated by resection, evaluating the results at 16-30 years by a standard questionnaire and clinical and radiological examination of the elbow and wrist. Seventeen patients had an excellent...
Immobilisation of the cervical spine is mandatory in the adequate primary survey of a trauma patient. This principle is part of the Advanced Trauma Life Support (ATLS) program. The ATLS course is part of the training of surgical and orthopedic residency programs. We...
In our trauma department, pertrochanteric femoral fractures with inherent stability are treated by either a DHS (Dynamic Hip Screw) or Gamma nail osteosynthesis. There are specific indications for both implants. However, a grey area seems to exist where both implants...
Ulna fractures with dislocation of the radial head are rare injuries. They constutute less than 5% of all fractures of the upper extremity. We describe a case with an ulnar fracture, dislocation of the radial head and simultaneous fracture of the olecranon. The trauma...
RPA Janssen, MD has contributed to the new book by T. Kamminga: The new warming-up. (Dutch).
TEAM (Trauma Evaluation And Management) introduces the concepts of trauma assessment and management to medical students during their clinical years. The core content is adapted from the College's successful program, Advanced Trauma Life Support® (ATLS) course....
Vascular complications after anterior cruciate ligament (ACL) reconstructions cause serious morbidity and potential mortality. Fortunately, their incidence is low. Only a few peer-reviewed case reports provide information and even a specific review article on...
Article on surgery and sopcial media. Surgeons experienced in professional use of social media have been interviewed. RPA Janssen, M.D. has shared his experiences in the do and dont's on Twitter, Facebook and LinkIn.
Fiber-rich therapy with brans has been decribed as succesful by almost all authors in the literature. Very few complications have been decribed for this widespread therapy in use since the 1970's. The complication "bran-plug obstruction" is only mentionned in 6...
The sentinel node-procedure is now a valid treatment of breast cancer. The clinical application has been tested in multiple medical centers. The purpose of the procedure is to detect the presence of tumor tissue in the sentinel lymph-node as sign of axillary...
The 33rd Annual international Arthroscopy&Arthroplasty Utrecht Courses 2024 will take place July 1-5, 2024 at University Medical Center Utrecht, The Netherlands. RPA Janssen MD PhD Prof is Course director for the 5 courses.
Prof RPA Janssen MD PhD will present the lecture The knee: the orthopaedic perspective for post BSc physiotherapists on Thursday May 30, 2024 at BASIS (in Dutch).
Prof Janssen MD PhD is invited as speaker on residency programs at the 9th National Master Medicine Congress on March 10, 2024.
Prof RPA Janssen MD PhD is invited as keynote speaker at the annual Master Class 2023 of the Dutch Arthroscopy Society. He will present a lecture on pediatric ACL injuries. December 8, 2023. Utrecht, The Netherlands
Poster presentation
A new scientific research project has been accepted as poster presentation at the RegMed XB 1st Annual Conference 2023. Florencia Abinzano, Jeske C.A. Feenstra, Rob P.A. Janssen, Keita Ito. Large-scale cartilage organoid fabrication based on articular cartilage...
https://movementacademy.nl/event/voorste-kruisband-revalidatie-bij-kinderen/
RPA Janssen MD PhD Prof and N van Melick PhD will give a keynote lecture on the evidence based treatment of ACL injuries. venue: Máxima Medical Center, Veldhoven, The Netherlands (Februari 15, 2023)
Prof Janssen MD PhD will present a keynote lecture on the multidisciplinary treatment of acute knee injuries together with N van Melick PT, PhD. They are invited by the Royal National Physiotherapy Society (KNGF). venue KNGF Hoofdkantoor, Amersfoort (Dec 21, 2022)...
Abstract: Introduction and Objectives: Graft failure rates after anterior cruciate ligament (ACL) reconstruction in children and adolescents are higher compared to adults. Studies have highlighted young age, hyperlaxity and rotatory instability as risk factors for...
Prof RPA Janssen MD PhD is invited for a keynote lecture at Post Master Course Knee on November 17, 2022. Title of the lecture is ACL and concomitant knjuiresd of the knee (EIndhoven, The Netherlands).
Invited keynote lecture
Poster presentation
Best Scientific Poster Award
Link to poster
Link to poster
First prize Jury 2021
View poster presentation
Invited guest lecture
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Keynote lecture on integrated website and social media in a medical specialist's practice.
In 2014, the Sports Medicine Center of Excellence has been inaugurated. RPA Janssen is partner in this Center as representative of the Orthopaedic Associates Eindhoven Greater Area & Maxima Medical Center Eindhoven-Veldhoven, The Netherlands. ...
RPA Janssen presents the lecture Complex knee ligament injury in sports: treatment approach at the Post-Olympic Congress 2014. March 27, 2014 Venue: De Reehorst Ede, The Netherlands Download program
RPA Janssen presented the lecture ACL Graft remodeling: animal versus human at the Unconventional ACL Meeting....The Sequel (Antwerp, Belgium. December 13, 2013). Download program View Presentation with slides
RPA Janssen will present the lecture: Anatomic medial reconstruction of the knee at the inaugural NVA-Advanced Arthroscopy Course Knee of the Dutch Arthroscopy Society (November 4, 2013, Erasmus University, Rotterdam, The Netherlands.
RPA Janssen, M.D. has been invited to present his scientific work on long term results after ACL reconstructions at the 30th AGA Jubilee Congress. As President, he will also represent the Dutch Arthroscopy Society (NVA) at the meeting with a delegation of...
Nominated for the Prof Rik Huiskes Award
Current knee osteoarthritis (OA) treatments are sub-optimal and not long-lasting. Within the osteoarthritis moonshot, osteochondral implants for focal cartilage defects are developed which need to regenerate cartilage and bone and integrate with the adjacent tissues....
Development of augmented reality appilications in pediatric ACL reconstruction with open physes.
RPA Janssen MD PhD coordinates several research projects (Msc and PhD_ on pediatric ACL reconstructions with open physis. Cooperation with ESSKA, University Aarhus (Denmark), Dutch Arthroscopy Society (NVA) and Maastricht University.
The research group of the Orthopaedic Associates Eindhoven Greater Area led by RPA Janssen MD PhD and M. Reijman PhD has started new cruciate ligament research projects in association with CC van Donkelaar PhD and J Foolen PhD of the faculty Biomedical...
Máxima Medical Center is one of the three centers in the new multicenter randomised controlled trial for best treatment of acute meniscal injuries: the STARR-Trial. More information on STARR-Trial (Dutch)
Pilot study for validation of a new knee extension program for patients with gait pattern disorders in knee osteoarthritis. The study is performed in cooperation with Erasmus University Rotterdam and Maastricht University, The Netherlands.
This is an international research project between Peking University Third Hospital (China), Máxima Medical Center Eindhoven, Erasmus Medical Center Rotterdam and Sint Maartsenskliniek Nijmegen (The Netherlands). Dynamic pedobarography can quantify specific...
The Editors' Choice of the month JRM-CC (August 2022)
Best Scientific Poster Award
The Thesis explores the topic of database design, and its first couple of stages. Going from ana- lyzing the organizational structure of the hospital, and analyzing the data that is collected during a patient’s treatment process, to establishing a concrete...
First Prize Jury Scientific Research Presentation
C0-Supervisor
Best Poster Award MMC 2011
The Thesis explores the topic of database design, and its first couple of stages. Going from ana- lyzing the organizational structure of the hospital, and analyzing the data that is collected during a patient’s treatment process, to establishing a concrete...
C0-Supervisor
![BSc thesis. What are preoperative factors which influence postoperative patient-reported outcomes [PRO] after total shoulder arthroplasty?](https://rpajanssen.nl/wp-content/uploads/2022/02/1639233047367218.png)
RPA Janssen MD PhD has been awarded the diploma Radiation Protection Level 4A/M for Medical Specialists after succesfully passing the national board examination on November 4, 2015.
RPA Janssen MD PhD has been awarded the diploma Good Clinical Practice after succesfully passing the national board examination on November 17th, 2011. The diploma is a prerequisite for conducting human scientific research in Europe. On Mach 15 2017,...
