Publications by authors named "J P van Amen"
Purpose: Decisions for postoperative immobilization after bony hip reconstructive surgery in cerebral palsy are controversial in current practice. The aim of this study was to check if choosing not to use any kind of postoperative immobilization is a safe practice.
Methods: A retrospective cohort study was conducted in a pediatric orthopedic tertiary referral center.
Aims: Reimers migration percentage (MP) is a key measure to inform decision-making around the management of hip displacement in cerebral palsy (CP). The aim of this study is to assess validity and inter- and intra-rater reliability of a novel method of measuring MP using a smart phone app (HipScreen (HS) app).
Methods: A total of 20 pelvis radiographs (40 hips) were used to measure MP by using the HS app.
Article Synopsis
- The study investigated the effectiveness of guided growth surgery for correcting knee deformities in children with nutritional rickets, assessing both the clinical and radiological outcomes over an average follow-up of about 2.8 years.
- Fifty children underwent temporary hemiepiphysiodesis using an 8-plate system, resulting in statistically significant improvements in various measurements like tibiofemoral angle and mechanical axis deviation.
- The findings suggest the procedure has a favorable outcome with a manageable rate of complications, indicating that tibial torsion responds well to treatment, and the proposed treatment algorithm aims to assist in clinical decision-making.
In a multi-parametric study the influence of pathological neonatal conditions on heart rate variability was investigated in 60 preterm infants born at a gestational age below 33 weeks. Measurements were performed during the first 3 days of life. Four times a day, RR-intervals, respiration curve and rate, transcutaneously measured blood gases and observed body movements were recorded while the infants were asleep.
View Article and Find Full Text PDFTo investigate the influence of maturational and physiological factors on heart rate variability in spontaneously breathing very preterm infants (n = 29) a multiparametric study was performed during the first 3 days of life in infants born at a gestational age below 33 weeks. Four times a day, RR-intervals, respiration curve and rate, transcutaneously measured blood gases and observed body movements were recorded while the infants were asleep. All data were stored simultaneously in a micro-computer.
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