Ron L Diercks

Ron L Diercks
University of Groningen | RUG · Department of Sports Medicine

MD, PhD, Professor

About

181
Publications
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Publications

Publications (181)
Article
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 orthopaedic centers (control group). Methods All patients with degenerative knee disease ≥ 50 years a...
Article
Full-text available
Objectives Despite the many proven advantages of a physically active lifestyle in patient populations, prescription of exercise is currently not widely implemented in routine clinical practice. The aims of this study were twofold: (1) to assess perceptions of clinicians on the current practice of exercise is medicine (E=M) prescription in two Dutch...
Thesis
Due to its unique anatomy and biomechanics, the shoulder shows some distinctive patterns while ageing. Several controversies are ongoing in the field of imaging, clinical testing, and existing and trending treatments for ageing patients with shoulder pain. Part 1 is an MRI study about osteoarthritis of the outer collar bone joint. Part 2 of the the...
Article
Full-text available
Objective: To provide an overview of barriers and facilitators that healthcare professionals (HCPs) perceive regarding the implementation of lifestyle interventions (LIs) in patients with hip and/or knee osteoarthritis (OA). Design: Scoping review. Data sources: The databases PubMed, Embase, CINAHL, PsycINFO and the Cochrane Library were searc...
Article
Purpose To identify factors affecting the implementation of lifestyle interventions (LIs) in patients with hip and/or knee osteoarthritis (OA) from the perspective of primary and secondary healthcare professionals (HCPs) in the Dutch healthcare system. Methods Multidisciplinary focus groups were composed. Data analysis was performed following them...
Article
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Purpose The amount of passive anterior tibial translation (ATT) is known to be correlated to the amount of posterior tibial slope (PTS) in both anterior cruciate ligament-deficient and reconstructed knees. Slope-altering osteotomies are advised when graft failure after anterior cruciate ligament (ACL) reconstruction occurs in the presence of high P...
Chapter
This chapter presents a clinical scenario of a 48‐year‐old male who went to an orthopedic surgeon with shoulder complaints. Subacromial pain syndrome (SAPS) causes pain, impairment in daily activities and work, and a clear and unambiguous anatomical substrate is lacking. SAPS is a clinical diagnosis and can be caused or accompanied with different t...
Article
Full-text available
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 possible explanatory factors. Methods A retrospective study was conducted using administrative data from January...
Chapter
The elbow, forearm, wrist and hand are the parts of the musculoskeletal system that are essential for functioning at a higher motor level. Injuries, both as a result of trauma and from chronic strain, are relatively common in this region and have a major impact on the quality of life. Recognition of the symptoms and knowledge of the natural course,...
Article
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Background Re-injury rates following reconstruction of the anterior cruciate ligament (ACL) are significant; in more than 20% of patients a rupture of the graft occurs. One of the main reasons for graft failure is malposition of the femoral tunnel. The femoral origin of the torn ACL can be hard to visualize during arthroscopy, plus many individual...
Article
Full-text available
Introduction: The long head of biceps tendon is frequently involved in degenerative rotator cuff tears. Therefore, this study explored the clinical results of an isolated biceps tenotomy and identified prognostic factors for improvement in pain and function. Materials and methods: Between 2008 and 2017, an arthroscopic isolated biceps tenotomy w...
Article
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Introduction Hip fracture surgery is among the most performed surgical procedures in elderly patients. Mortality rates are high, however, and patients often fail to live independently following a hip fracture. To improve outcome, multidisciplinary care pathways have been initiated, but longer-term results are lacking. Aim of this study was to compa...
Article
Background: Abnormal movement patterns due to compensatory mechanisms have been reported in patients with rotator cuff tears. The long head of the biceps tendon may especially be overactive and a source of pain and could induce abnormal muscle activation in these patients. It is still unknown why some patients with a rotator cuff tear develop comp...
Article
Full-text available
Background: There is no consensus on the optimal treatment for displaced midshaft clavicle fractures. Several studies indicate superior patient satisfaction in favour of operative reconstruction. It is unknown what drives superior satisfaction in this treatment group. The aim of this study was to explore patient satisfaction and identify contribut...
Article
Full-text available
Background Tibial rotation is an important topic in anterior cruciate ligament (ACL) surgery, and many efforts are being made to address rotational stability. The exact role of the ACL in controlling tibial rotation in clinical studies is unknown. Purpose To quantify the effect of ACL reconstruction on the amount of tibial rotation based on the cu...
Preprint
BACKGROUND The prescription of physical activity (PA) in clinical care has been advocated worldwide. This “exercise is medicine” (E=M) concept can be used to prevent, manage, and cure various lifestyle-related chronic diseases. Due to several challenges, E=M is not yet routinely implemented in clinical care. OBJECTIVE This paper describes the rati...
Article
Full-text available
Background The prescription of physical activity (PA) in clinical care has been advocated worldwide. This “exercise is medicine” (E=M) concept can be used to prevent, manage, and cure various lifestyle-related chronic diseases. Due to several challenges, E=M is not yet routinely implemented in clinical care. Objective This paper describes the rati...
Preprint
Full-text available
Background There is no consensus on the optimal treatment for displaced midshaft clavicle fractures. Several studies indicate superior patient satisfaction in favour of operative reconstruction. It is unknown what drives superior satisfaction in this treatment group. The aim of this study was to explore patient satisfaction and identify contributor...
Article
Full-text available
PurposeAim of this study was to evaluate the responsiveness of the Dutch version of the Achilles tendon Total Rupture Score (ATRS-NL).Methods Patients (N = 47) completed the ATRS-NL at 3 and 6 months after Achilles tendon rupture (ATR). Additionally, they filled out the Euroqol-5D-5L (EQ-5D-5L) and Global Rating of Change Score (GRoC). Effect sizes...
Preprint
Full-text available
Background There is no consensus on the optimal treatment for displaced midshaft clavicle fractures. Several studies indicate superior patient satisfaction in favour of operative reconstruction. It is unknown what drives superior satisfaction in this treatment group. The aim of this study was to explore patient satisfaction and identify contributor...
Article
Full-text available
Background: Several surgical reconstructive options are available to treat massive rotator cuff tears (MRCTs). The rotator cable has an important function and we evaluated the clinical result after arthroscopic reconstruction of the rotator cable with an autograft tendon. Methods: A prospective pilot study was performed with inclusion of four pa...
Article
Context Several studies have been conducted to better understand the effect of load on the Achilles tendon structure. However, the effect of a high cumulative load consisting of repetitive cyclic movements, such as those that occur during the running of a marathon, on Achilles tendon structure is not yet clear. Clinicians, coaches, and athletes wil...
Conference Paper
Objectives Dutch ‘Choosing Wisely’ recommendations were developed to reduce routine use of MRI and arthroscopy in degenerative knee disease. An active de-implementation strategy was developed to effectuate these CW-recommendations in orthopaedic practice. This study evaluated the feasibility and effectiveness of this de-implementation strategy to r...
Article
Full-text available
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 Cross-sectional surveys were sent to 123 patients (response rate 95%) and 413 orthopaedic surgeons (response rate 62%) fulfi...
Article
Full-text available
Background and purpose — The multidisciplinary Clinical Practice Guideline for diagnosis and treatment of subacromial pain syndrome (SAPS) was created in 2012 by the Dutch Orthopedic Association. In brief, it stated that SAPS should preferably be treated nonoperatively. We evaluated the effect of the implementation of the guideline on the number of...
Article
Full-text available
Purpose Changes in tendon structure are commonly seen in patients with unilateral achilles (AT) or patellar (PT) tendinopathy but might also be present on the asymptomatic side, indicating a higher risk for developing symptoms. The aim of this study is to compare tendon structure of the symptomatic side with the asymptomatic side in AT and PT patie...
Conference Paper
Introduction More than half a million athletes were enrolled in a marathon run during the last years. During running the Achilles tendon is submitted to high loads, and multiple tensile strain cycles. There are no studies investigating the effect of a marathon in the structure of the Achilles tendon. Thus, the aim of this study was to investigate t...
Article
Full-text available
Introduction: Abnormal kinematics have been implicated as one of the major risk factors for lower limb tendinopathy (LLT). Objective: To systematically review evidence for kinematic risk factors for LLT in runners. Methods: Individual electronic searches in PubMed, EMBASE and Web of Science were conducted. Two reviewers screened studies to identi...
Chapter
De elleboog, de onderarm, de pols en de hand zijn de delen van het bewegingsapparaat die voor het functioneren op hoger motorisch niveau voor de mens essentieel zijn. Blessures, zowel als gevolg van een trauma als door chronische overbelasting, komen in deze regio relatief veel voor en hebben een grote invloed op de kwaliteit van leven. Herkenning...
Article
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Background Achilles tendon rupture (ATR) is a common sports injury, with a rising incidence and significant impairments. Due to the lack of treatment guidelines, there is no consensus about diagnostic methods, primary treatment (non-surgical or surgical) and rehabilitation. It is hypothesized that this lack of consensus and guidelines leads to sub-...
Article
Full-text available
Background and purpose Surgery for hip fractures is frequently followed by complications that hinder the rehabilitation. Only part of the complications are surgery-related, however these, including reoperation may have the highest impact. Operative protocols are designed to treat all patients equally, according to evidence based guidelines. Aim of...
Article
Age-related decline in muscle strength can compromise shoulder function, which could increase the effort needed to perform activities of daily living (ADLs). The purpose of this cross-sectional study was to determine for the first time the relative shoulder effort during ADLs in healthy young and older adults. Ten healthy young adults and ten healt...
Article
Full-text available
Purpose: Surgery for hip fractures is frequently followed by complications that hinder the rehabilitation of patients. The aim of this study was to describe the incidence rate and type of complications, including mortality, after hip fracture surgery, and to identify the risk factors of these complications that may be amenable to prevention. Meth...
Conference Paper
Objectives Approximately 25% of patients aged 50 years and over experience knee pain from degenerative knee disease. Despite the Dutch – evidence based – Choosing Wisely recommendation ‘No arthroscopic surgery and no MRI for patients of 50 years and older with knee degenerative knee complaints’ (in short: CW-recommendation), orthopaedic surgeons st...
Conference Paper
Objectives About 25% of the patients who are fifty years and older suffer from degenerative knee pain and functional loss. According to Dutch orthopaedic guideline recommendations these patients are not required to be diagnosed and treated routinely with an MRI and/or an arthroscopy. The importance of these recommendations are underscored in the Ch...
Article
Full-text available
Purpose: This study aimed to describe and analyse usual care of Achilles tendon ruptures (ATRs) by orthopaedic surgeons and trauma surgeons in the Netherlands. Methods: A nationwide online survey of ATR management was sent to all consultant orthopaedic and trauma surgeons in the Netherlands, requesting participation of those involved in ATR mana...
Article
Objective: To determine the association between clinical and imaging outcomes after therapeutic loading exercise in Achilles tendinopathy (AT) and patellar tendinopathy (PT) populations at both short- and long-term follow-up. Data Sources: The PUBMED and EMBASE databases were searched (up to June 2017) to identify articles that meet the inclusion c...
Article
Objective: Intervening on barrier beliefs (BBs) may inhibit the role of barriers as mediating factors in lifestyle behavior. The aim of this study was to analyze the effects of a barrier-belief counseling intervention (BBCI) on physical activity (PA) and healthy food intake. Methods: An RCT was conducted in a primary care setting among adults (a...
Article
Full-text available
The treatment of massive rotator cuff tears (MRCT) is challenging. Insufficient tissue quality, size, and retraction of the cuff often lead to failures of repair. Different techniques like direct repair, partial repair, and graft applications have been developed, but results are not yet predictable. In this arthroscopic technique the objective is n...
Article
Objective: To determine the association between clinical and imaging outcomes after therapeutic loading exercise in Achilles tendinopathy (AT) and patellar tendinopathy (PT) populations at both short- and long-term follow-up. Data sources: The PUBMED and EMBASE databases were searched (up to June 2017) to identify articles that meet the inclusio...
Article
Purpose: To improve surgical outcomes in patients with massive cuff defects, different techniques and augmentations are proposed. The biceps tendon is easily available as an autograft. Our aim was to conduct a qualitative systematic review of various methods and surgical techniques that use a biceps autograft (BAG) for rotator cuff repair. Functio...
Article
Background The optimal treatment of displaced midshaft clavicle fractures (Robinson Type 2B1 & 2B2) in adults remains controversial. Little is known about patient satisfaction with treatment for this type of injury. The purpose of this study was to compare clinical outcomes and explore predictors of patient satisfaction after nonoperative and direc...
Article
Objective: Currently, no treatments exist for patellar tendinopathy (PT) that guarantee quick and full recovery. Our objective was to assess which treatment option provides the best chance of clinical improvement and to assess the influence of patient and injury characteristics on the clinical effect of these treatments. Design: A secondary anal...
Article
Summary A valgus rotation trauma can cause a subluxation of the tibia relative to the femur causing an anterior cruciate ligament tear. The impact of the femoral condyle against the posterior part of the tibial plateau can cause an impression of the lateral femoral condyle; visible as the “lateral femoral notch sign” on a radiograph of the knee. Th...
Article
Full-text available
Greater insight into sports and work performance of athletes with patellar tendinopathy (PT) will help establish the severity of this common overuse injury. Primary aim of this study is to investigate the impact of PT on sports and work performance. Seventy seven active athletes with PT (50 males; age 28.1 ± 8.2 years; Victorian Institute of Sports...
Article
Objectives: The primary aim of this study was to investigate the effect of a patellar strap on the proprioception of the symptomatic leg in PT. Secondary aims were to investigate a possible difference in effectiveness between athletes with high and low proprioceptive acuity, and whether predictors of effectiveness could be found. Design: Randomi...
Article
Aim: To explore (1) general practitioners' (GPs') motivations to refer to lifestyle interventions and to investigate the association between GPs' own lifestyle behaviors and their referral behavior and (2) patient indicators in the decision-making process of the GPs' referral to lifestyle interventions. Method: A cross-sectional study was conduc...
Article
Background In sedentary subjects use of medication is expected to be high which may cause problems when taking up exercise as several types of medication have been linked to musculoskeletal disorders. Objective To study the relation between medication use and the incidence of running-related injuries in novice runners. Design Prospective cohort s...
Article
This study focused on comparing muscle activities predicted by the Musculoskeletal Modeling System with EMG from ten healthy subjects who performed normal walking, one-legged forward hopping and side jumping. Eight EMG electrodes measured the activity of eight right leg muscles. Specific thresholds per muscle were applied on the EMG prior compariso...
Article
Unlabelled: Shoulder stiffness can be caused by various etiologies such as immobilization, trauma, or surgical interventions. The Upper Extremity Committee of ISAKOS defined the term "frozen shoulder" as idiopathic stiff shoulder, that is, without a known cause. Secondary stiff shoulder is a term that should be used to describe shoulder stiffness...
Article
Full-text available
Background Lower extremity tendinopathy is a common sports injury, but it can also affect non-athletes. Because tendinopathy is difficult to treat and has negative effects on the ability to work and quality of life, development of preventive interventions is important. The first step in the Van Mechelen prevention model is to determine the extent o...
Article
The purpose was to investigate how a negative life event (NLE) affects perceived psychosocial stress, recovery and running economy (RE). Competitive runners were monitored in a prospective non-experimental cohort study over one full training season in which they experienced the same unplanned severe NLE. 16 runners recorded stress and recovery scor...
Article
In this study the in-situ tensile behavior and slackness of the anterior cruciate ligament (ACL) was evaluated at various knee flexion angles. In four cadaveric knees the ACL was released at the tibial insertion, after which it was re-connected to a tensiometer. After pre-tensioning (10 N) the ACL in full-extension, the knee was flexed from 0° to 1...
Article
Full-text available
Objectives: The incidence of running-related injuries is high. Some risk factors for injury were identified in novice runners, however, not much is known about the effect of training factors on injury risk. Therefore, the purpose of this study was to examine the associations between training factors and running-related injuries in novice runners,...
Article
Numerous athletes with patellar tendinopathy (PT) use a patellar strap or sports tape during sports. This study's aim was to investigate the short-term effect of these orthoses on patellar tendon pain. Participants performed the single-leg decline squat, vertical jump test, and triple-hop test under four different conditions (patellar strap, sports...
Article
Running is a popular form of physical activity, despite of the high incidence of running-related injuries (RRIs). Because of methodological issues, the etiology of RRIs remains unclear. Therefore, the purposes of the study were to assess the incidence of RRIs and to identify risk factors for RRIs in a large group of novice runners. In total, 1696 r...
Article
Full-text available
Adding external focus of attention (EF, focus on the movement effect) may optimize current anterior cruciate ligament (ACL) injury prevention programmes. The purpose of the current study was to investigate the effects of an EF, by a visual stimulus and an internal focus, by a verbal stimulus during unexpected sidestep cutting in female and male ath...
Article
Background: Good clinical results have been reported for both surgical and conservative treatment of rotator cuff tears. The primary aim of this randomized controlled trial was to compare functional and radiologic improvement after surgical and conservative treatment of degenerative rotator cuff tears. Methods: We conducted a randomized controll...
Article
Full-text available
Despite several consensus statements, different injury definitions are used in the literature. This study aimed to identify the impact of different injury definitions on the nature and incidence of complaints captured during a short-term running program for novice runners. Prospective cohort study. 1696 participants completed weekly diaries on runn...
Article
The primary aim of this study is to investigate the effect of the use of a patellar strap on knee joint proprioception in both healthy participants and in patients with patellar tendinopathy (PT). Secondary aims are to examine whether there is a difference in effectiveness of the use of a patellar strap between participants with low and high propri...
Article
Full-text available
Many runners suffer from injuries. No information on high-risk populations is available so far though. The aims of this study were to systematically review injury proportions in different populations of runners and to compare injury locations between these populations. An electronic search with no date restrictions was conducted up to February 2014...
Article
Tendinopathy, the most prevalent tendon disorder which is considered as the clinical diagnosis of pain and dysfunction, is common in sports and its prevalence is ever-increasing. Despite the lack of clarity about risk factors, various preventive interventions for tendinopathy have been investigated. The main objective of this study is to review cur...
Article
There is considerable interest to develop accurate subject-specific biomechanical models of the knee. Most of the existing models currently do not include a representation of the posterior knee capsule. In order to incorporate the posterior capsule in knee models, data is needed on its mechanical properties. To quantify the mechanical properties of...
Article
A systematic review was performed to collect the existing evidence on the effect of treating frozen shoulder with oral or intra-articular medication. Significant effect was found of oral corticosteroid medication on pain and function in the short term and of imaging-guided intra-articular steroid injection. No effect was found of NSAID medication.
Article
Studies show that joint distension with saline, sometimes with added steroids, gives pain relief, improves range of motion, and functionality of the glenohumeral joint. The effect is seen both in diabetic and nondiabetic patients. There is discussion if a volume of less than 40–80 ml has any dilating effect. A single repeat dilation can have an eff...
Article
The stiff and painful shoulder is described in many ways: Frozen shoulder, stiff shoulder, and adhesive capsulitis. In this chapter, two different entities were defined: A stiff and painful shoulder, developing without any trauma or specific shoulder disease, further referred to as “frozen shoulder,” and stiff and painful shoulder occurring during...