Publications by authors named "Sander Koeter"

Introduction: Osteoarthritis (OA) is a multifactorial disease in which low-grade inflammation is considered to play a pivotal role. Although colchicine is a widely used anti-inflammatory drug in the treatment of gout, its effect in OA is still disputed due to inconsistent results of short-term clinical trials. Therefore, we aim to evaluate the effect of long-term colchicine 0.

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Background: Postoperative urinary retention is a frequently seen serious complication after surgery. After orthopaedic hip or knee arthroplasty the incidence is relatively high, between 30 and 50% in previous studies. Currently, there is no consensus on the indication for urinary catheterization and a uniform guideline is lacking.

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Background: Patellofemoral pain (PFP) is a common musculoskeletal disorder resulting in anterior knee pain. Physiotherapy is the current standard treatment, while surgical intervention (tibial tubercle transfer [TTT]) is reserved for chronic cases when nonoperative treatment has failed. TTT can result in clinically meaningful improvement in patients with patellofemoral maltracking without instability.

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Introduction: Despite recommendations, non-surgical treatment modalities in knee and/or hip osteoarthritis (KHOA) are underused. An information campaign was developed targeting patients with early stage KHOA and healthcare professionals (HCPs) to optimise timing of referral to secondary care. This protocol describes the development and design of this information campaign and a randomised controlled trial (RCT) on its effectiveness in impacting healthcare utilisation.

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  • Arthrofibrosis is a condition that affects knee joint movement and can lead to complications following knee replacement surgeries, specifically unicompartmental and total knee arthroplasties.
  • A study analyzed data from 14,325 revision surgeries from the Dutch Arthroplasty Registry, examining factors like age, sex, BMI, smoking status, and type of surgery to understand their connection to arthrofibrosis-related revisions.
  • Results showed that younger age, male sex, lower BMI, non-smoking status, and total knee arthroplasty were significantly linked to higher rates of revision due to arthrofibrosis.
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  • The study aimed to create a comprehensive guideline for managing patellofemoral pain (PFP) and patellar tendinopathy (PT) to aid healthcare professionals in making clinical decisions.
  • An expert panel assessed existing literature using the GRADE method to evaluate the strength of treatment recommendations, focusing on exercise therapy as the main treatment approach.
  • Key recommendations include starting with exercise therapy, using additional treatments only if necessary, limiting pain medications, and reserving surgery for specific cases, while acknowledging the low certainty of evidence for these strategies.
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Background And Purpose: Patients actively smoking at the time of primary hip or knee arthroplasty are at increased risk of direct perioperative complications. We investigated the association between smoking status and risk of revision and mortality within 2 years following hip or knee arthroplasty.

Methods: We used prospectively collected data from the Dutch Arthroplasty Register.

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Objectives: Macrophages are key orchestrators of the osteoarthritis (OA)-associated inflammatory response. Macrophage phenotype is dependent on environmental cues like the inflammatory factor S100A8/A9. Here, we investigated how S100A9 exposure during monocyte-to-macrophage differentiation affects macrophage phenotype and function.

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Background: knee complaints are one of the most common reasons to consult the general practitioners in the Netherlands and contribute to the increasing burden on general practitioners. A proportion of patients that are referred to orthopedic outpatient clinics are potentially referred unnecessarily. We believe osteoarthritis is not always considered by general practitioners as the cause of atraumatic knee complaints.

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  • The study aimed to analyze the incidence and characteristics of injuries during judo tournaments, including factors like gender, age, and weight categories through a systematic review of existing literature.
  • Out of 1979 studies reviewed, 25 were selected, revealing injury incidence rates ranging from 2.5% to 72.5% for those needing medical evaluation and 1.1% to 4.1% for injuries causing time loss, with head injuries being the most common.
  • The conclusion highlighted the inconsistencies in current injury reports, emphasizing the need for standardized reporting methods in future studies to better understand injury risks in judo.
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  • Knee injuries, particularly ACL ruptures and meniscal injuries, are common among young, active individuals and can lead to post-traumatic osteoarthritis (PTOA) in 25-50% of cases.
  • While mechanical damage has historically been viewed as the main cause of cartilage breakdown in PTOA, recent research highlights inflammation as a significant factor, often worsened by hemarthrosis (bleeding in the joint) that occurs with injuries.
  • There is a pressing need for anti-inflammatory treatments to prevent PTOA progression, which requires more understanding of the inflammatory mechanisms involved to identify effective therapeutic targets and optimal timing.
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Recently, two new English specific patient reported outcome measures (PROMs) to evaluate treatment of patients with patellofemoral complaints have been developed : the Banff Patella Instability Instrument (BPII) and the Norwich Patellar Instability (NPI) score. This study was designed to translate and validate the BPII and NPI in Dutch patients after surgical treatment for patellar instability. Forward and backward translation of the outcome measures was performed.

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Background and purpose - A guideline committee of medical specialists and a physiotherapist was formed on the initiative of the Dutch Orthopedic Association (NOV) to update the guideline Arthroscopy of the Knee: Indications and Treatment 2010. This next guideline was developed between June 2017 and December 2019. In this Part 1 we focus on the meniscus, in Part 2 on all other aspects of knee arthroscopy.

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Background and purpose - A guideline committee of medical specialists and a physiotherapist was formed on the initiative of the Dutch Orthopedic Association (NOV) to update the Guideline Arthroscopy of the Knee: Indications and Treatment 2010. This next Guideline was developed between June 2017 and December 2019. In part 1 we focused on the meniscus; this part 2 addresses all other aspects of knee arthroscopy.

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Background: A tibial tubercle osteotomy (TTO) is a commonly performed procedure in young and active patients with patellofemoral complaints. Previous small patient series demonstrated a relatively high risk of complications, which appear to be technique dependent. The purpose of this large case series is to quantify the risk of procedure specific postoperative complications related to a uniform self-centering TTO technique in a large cohort, performed by two different surgeons in one center.

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Introduction: In patients with recurrent patellar dislocations, a tibial tubercle osteotomy (TTO) can be indicated to correct patella alta or an increased trochlear groove-tibial tubercle distance. Several surgical techniques are described. Previous studies emphasize that detaching osteotomies results in devascularisation, which can lead to non-union and tibial shaft fractures.

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Purpose: Patella alta is a risk factor for patellofemoral pain and instability. Several measurement methods and imaging modalities are in use to measure patellar height. The first aim of this study was to determine the intra- and interrater reliability of different patellar height measurement methods on conventional radiography (CR), CT and MRI.

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Background And Purpose: Prosthetic joint infection (PJI) is a serious complication resulting from total knee arthroplasty (TKA) or total hip arthroplasty (THA). In this study, patients with a PJI are compared with patients with an uncomplicated postoperative course to identify relevant risk factors for PJI.

Methods: A matched case-control study was performed with patients undergoing fast-track, elective unilateral TKA or THA.

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Background: Modern health care focuses on shared decision making (SDM) because of its positive effects on patient satisfaction, therapy compliance, and outcomes. Patients' knowledge about their illness and available treatment options, gained through medical education, is one of the key drivers for SDM. Current patient education relies heavily on medical consultation and is known to be ineffective.

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Objective: To collect and prioritize the frequently asked questions (FAQs) that patients with hip or knee osteoarthritis (OA) and health care professionals consider to be the most important; to identify informational needs that go beyond guideline recommendations.

Methods: FAQs were collected among health care professionals and from the arthritis helpline of the Dutch Arthritis Foundation. After deleting overlapping FAQs, the remaining FAQs were prioritized by patients and health care professionals using a maximum difference scaling method.

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Hypothermia is associated with a higher risk of perioperative complications and occurs frequently after total joint arthroplasty (TJA). The incidence of hypothermia following total joint arthroplasty was assessed with its risk factors and its correlation with PJI. Correlation of hypothermia with age, gender, BMI, type of arthroplasty surgery, type of anesthesia, operation time, blood loss, date of surgery and PJI was evaluated in 2600 patients.

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Background: Providing relevant information on disease and self-management helps patients to seek timely contact with care providers and become actively involved in their own care process. Therefore, health professionals from primary care, multiple hospitals and health organisations jointly decided to develop an educational program on osteoarthritis (OA). The objective of the present study was to determine preliminary effects of this OA educational program on healthcare utilization and clinical outcomes.

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Background: Postoperative urinary retention (POUR) appears to be a common complication in lower limb joint arthroplasty; however, reports on its incidence vary. There is no general consensus on its definition and there is no scientific evidence on treatment principles. We performed a prospective observational study to establish the incidence of POUR and its risk factors, including the preoperative postvoid residual urine volume and the perioperative fluid balance, in fast-track total joint arthroplasty (TJA).

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Background: We compared the functional outcome between conventional and high-flexion total knee arthroplasty (TKA) using kneeling and sit-to-stand tests at 1 year post-operative. In addition, the patient's daily functioning, pain and satisfaction were quantified using questionnaires.

Methods: We randomly assigned 56 patients to receive either a conventional or a high-flexion TKA.

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