Research Topics
| B L KapteinSummaryAffiliation: Leiden University Medical Center Country: The Netherlands Publications
| Collaborators
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Detail Information
Publications
A new model-based RSA method validated using CAD models and models from reversed engineeringB L Kaptein
Department of Orthopaedics, Leiden University Medical Center, P O Box 9600 RC, Leiden 2300, The Netherlands
J Biomech 36:873-82. 2003..05 degrees. Studies with clinical RSA-radiographs must prove that these results can also be reached in a clinical setting, making model-based RSA a possible alternative for marker-based RSA...- Estimating muscle attachment contours by transforming geometrical bone modelsB L Kaptein
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands
J Biomech 37:263-73. 2004..From this study, we concluded that most muscle attachment contours can be predicted by means of geometric models of the bones... - Evaluation of three pose estimation algorithms for model-based roentgen stereophotogrammetric analysisB L Kaptein
Department of Orthopaedics, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands
Proc Inst Mech Eng H 218:231-8. 2004..The IIPM and DIF algorithms are robust to the different distortions, making model-based RSA a possible replacement for marker-based RSA... - A new type of model-based Roentgen stereophotogrammetric analysis for solving the occluded marker problemB L Kaptein
Department of Orthopaedics, Leiden University Medical Center, P O Box 9600, 2300 RC Leiden, The Netherlands
J Biomech 38:2330-4. 2005..The new algorithm makes RSA more robust for occlusion of markers. This improves the results of clinical RSA studies because the number of lost RSA follow-up moments is reduced... - Model-based RSA of a femoral hip stem using surface and geometrical shape modelsBart L Kaptein
Department of Orthopaedics, Leiden University Medical Center, The Netherlands
Clin Orthop Relat Res 448:92-7. 2006..We found no difference in accuracy and precision between the two model-based RSA techniques in clinical data. For this particular hip stem, EGS model-based RSA is a good alternative for marker-based RSA... - Clinical validation of model-based RSA for a total knee prosthesisBart L Kaptein
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands
Clin Orthop Relat Res 464:205-9. 2007..LEVEL OF EVIDENCE: Level II, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence... 
Detecting femur-insert collisions to improve precision of fluoroscopic knee arthroplasty analysisA H Prins
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, The Netherlands
J Biomech 43:694-700. 2010..In conclusion, collision detection can prevent reconstructing impossible poses and it improves the position and motion estimation in the out-of-plane direction...- Handling modular hip implants in model-based RSA: combined stem-head modelsA H Prins
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
J Biomech 41:2912-7. 2008..01) on the clinical data. With relatively small differences in the other migration directions, these results demonstrate that the new method with a combined stem-head model can be a useful alternative to the standard model-based approach... - Image-based RSA: Roentgen stereophotogrammetric analysis based on 2D-3D image registrationP W de Bruin
Orthopaedics Department, Leiden University Medical Center, Leiden, The Netherlands
J Biomech 41:155-64. 2008.... - Integrated contour detection and pose estimation for fluoroscopic analysis of knee implantsA H Prins
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands
Proc Inst Mech Eng H 225:753-61. 2011..It eliminates most of the manual work in fluoroscopic analysis, with sufficient precision for clinical research purposes... - A model-based approach to measure the minimum joint space width of total knee replacements in standard radiographsE A van Ijsseldijk
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, The Netherlands
J Biomech 45:2171-5. 2012..Although the use of a phantom experiment poses some limitations in conveying the findings to clinical practice, this improved mJSW measurement can lead to better wear detection for surgery decisions and research purposes... - The robustness and accuracy of in vivo linear wear measurements for knee prostheses based on model-based RSAE A van Ijsseldijk
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands
J Biomech 44:2724-7. 2011..The measurement is robust in clinical settings. Although anterior tilt seems to influence the measurement, the size of this influence is low and clinically irrelevant... - Soft-tissue artefact assessment during step-up using fluoroscopy and skin-mounted markersE H Garling
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands Department of Radiology, Division of Image Processing, Leiden University Medical Center, Leiden, The Netherlands
J Biomech 40:S18-24. 2007.... - Differences in long-term fixation between mobile-bearing and fixed-bearing knee prostheses at ten to 12 years' follow-up: a single-blinded randomised controlled radiostereometric trialB G Pijls
Leiden University Medical Center, Department of Orthopaedics, P O Box 9600, Postzone J 11 S 2300 RC Leiden, The Netherlands
J Bone Joint Surg Br 94:1366-71. 2012..The wear underneath the mobile bearing was small and is unlikely to be clinically relevant... - Assessment of three-dimensional stent-graft dynamics by using fluoroscopic roentgenographic stereophotogrammetric analysisOlivier H J Koning
Department of Surgery, Division of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands
J Vasc Surg 46:773-9. 2007..To validate the use of fluoroscopic roentgenographic stereophotogrammetric analysis (FRSA) for its feasibility and accuracy for measuring the three-dimensional dynamic motion of stent grafts... - Marker Configuration Model-Based Roentgen Fluoroscopic AnalysisEric H Garling
Department of Orthopaedics, Leiden University Medical Center, P O Box 9600, J11 S, 2300 RC Leiden, The Netherlands
J Biomech 38:893-901. 2005..MCM-Based RFA has the potential to be an accurate, clinically useful tool for studying kinematics after total joint replacement using standard equipment... - Aortic customize: a new alternative endovascular approach to aortic aneurysm repair using injectable biocompatible elastomer. An in vitro studyWillem Maarten P F Bosman
Department of Surgery, Section Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands
J Vasc Surg 51:1230-7. 2010..The aim of this in vitro study was to investigate the extent of aneurysm wall stress reduction by the presence of a noncompliant elastomer cuff... - Validation of the in vivo volumetric wear measurement for total knee prostheses in model-based RSAE A van Ijsseldijk
Biomechanics and Imaging Group, Department of Orthopaedics, Leiden University Medical Center, The Netherlands Electronic address
J Biomech 46:1387-91. 2013..This is an important limitation to the applicability of the volumetric wear measurement in clinical practice and further clinical validation is required... - Influence of aneurysm wall stiffness and the presence of intraluminal thrombus on the wall movement of an aneurysm - an in vitro studyW M P F Bosman
Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
Vascular 20:203-9. 2012..Wall movement (and theoretically wall stress) diminishes when the stiffness of the ILT increases. Compliance of the aneurysm wall influences wall movement. When the stiffness of the wall increases, the wall movement diminishes... - Limited rotation of the mobile-bearing in a rotating platform total knee prosthesisE H Garling
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands Department of Radiology, Division of Image Processing, Leiden University Medical Center, Leiden, The Netherlands
J Biomech 40:S25-30. 2007.... - Fluoroscopic Roentgen stereophotogrammetric analysis (FRSA) to study three-dimensional stent graft dynamicsOlivier H J Koning
Department of Surgery, Division of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands
J Vasc Surg 50:407-12. 2009..Quantification of 3D motion was not available until now. FRSA can provide crucial information on the forces exerted on stent grafts and will, therefore, provide essential information for improvements in stent graft design... - 2D-3D shape reconstruction of the distal femur from stereo X-ray imaging using statistical shape modelsN Baka
Division of Image Processing, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
Med Image Anal 15:840-50. 2011..68mm RMS P2S). A feasibility study on one fluoroscopic time series illustrates the potential of the method for motion and shape estimation from fluoroscopic sequences with minimal user interaction... - High-precision measurements of cementless acetabular components using model-based RSA: an experimental studyThomas Baad-Hansen
Department of Orthopaedic Surgery, Aarhus University Hospital, Denmark
Acta Orthop 78:463-9. 2007..Within the last few years, new software systems have been developed to solve this problem. We compared the precision of 3 RSA systems in migration analysis of the acetabular component... 
Accuracy of model-based RSA contour reduction in a typical clinical applicationChristof Hurschler
Department of Orthopaedics, Laboratory for Biomechanics and Biomaterials, Hannover Medical School, Anna von Borries Str 1 7, 30625 Hannover, Germany
Clin Orthop Relat Res 466:1978-86. 2008..The data suggest that contour reduction does not result in unacceptable loss of model-based RSA accuracy, and that the model-based method can be used interchangeably with the marker-based method for measuring tibial component migration...