Design and manufacture of anatomical hip joint endoprostheses using CAD/CAM systems

Werner, Andrzej; Lechniak, Z.; Skalski, Konstanty; Kędzior, Krzysztof

doi:10.1016/s0924-0136(00)00682-8

Cited by 36 publications

(36 citation statements)

References 4 publications

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“…They are usually used as position references in many applications, such as preoperative planning, virtual surgical operation, intraoperative navigation, patient-specific prosthesis design, etc. Automatically recognizing anatomical landmarks is an urgent task in the digital surgery field [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Automatic extraction of 3D anatomical feature curves of hip bone models reconstructed from CT images

Liu

Qian

Zhao

2015

BME

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Abstract. 3D anatomical feature curves (AFC) on bone models reconstructed from CT/MRI images are important in some fields, such as preoperative planning, intra-operative navigation, patient-specific prosthesis design, etc. Interactive extraction of feature curves on patient-specific bone models is time-consuming, has low repeatability and accuracy. This paper presents a computer graphics method to automatically extract AFC from 3D hip bone models reconstructed from CT images. A DCSS (direct curvature scale space)-based technique is firstly used to extract anatomical feature points (AFP) in every contour, using anatomical structure information as prior knowledge so that AFP are extracted and only extracted. Then, corresponding AFP are linked in different contours and AFC is generated. AFC obtained by our method were compared with those interactively extracted by three surgeons, which showed that our method is feasible (Dice coefficient: 0.94; Average symmetric surface distance: 3.97 mm). The method was also applied to identify anatomical landmarks, which showed that our method is superior to the curvature-based methods that fail to identify landmark regions or have too many redundant regions, which results in failures to subsequently label landmark regions using pre-defined spatial adjacency matrices.

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Section: Introductionmentioning

confidence: 99%

Automatic extraction of 3D anatomical feature curves of hip bone models reconstructed from CT images

Liu

Qian

Zhao

2015

BME

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“…Thus, a custom-made prosthesis has to be made for the patient. Anatomical features of the human skeletomuscular system are usually taken into account in the designs of custom hip implants [2], this may enhance load transfer from the implant to bone [3][4][5]. Along with numerous CAD (Computer Aided Design) systems offering parametric geometry, parametric-oriented design of a hip implant based on anthropometrics study becomes possible [6].…”

Section: Introductionmentioning

confidence: 99%

“…Along with numerous CAD (Computer Aided Design) systems offering parametric geometry, parametric-oriented design of a hip implant based on anthropometrics study becomes possible [6]. Design of custom hip prosthesis, according to computer tomography (CT) images, has been introduced in many articles [1,2,[6][7][8]. In some cases (such as hip implant repair cases), computer tomography images needed cannot be utilized to reconstruct the femoral cavity of the patient because some high-density matter (such as metal) can cause them to be blurry, which results in a custom hip implant that cannot be designed based on computer tomography images.…”

Section: Introductionmentioning

confidence: 99%

Design and manufacture of custom hip prostheses based on standard X-ray films

Xue

Wang

et al. 2005

Int J Adv Manuf Technol

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This paper describes a methodology for designing custom hip implants based on standard X-ray films for the cases when the patient's bone are not suitable for a standard hip implant. Software was developed that includes X-ray scanning, femoral canal obtaining, implant designing, fit evaluation, and drawing a 2D map. Hip implants can then be manufactured using the CAM (Computer Aided Manufacturing) technique. The design procedures, rationales are explained. Verification of a custom hip implant is presented in results and discussion of this paper. It was concluded that the hip implant matched the femoral cavities very well. The result of verification indicates that the method of designing hip implants is practicable.

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“…Werner et al, 2000, outlined a methodology for the design and manufacture of a custom femur endoprosthesis. Again, in this methodology the CAD data for the specific bone came from a CT scan.…”

Section: Chapter 2 Literature Reviewmentioning

confidence: 99%

“…It could be advantageous for a patient to receive a custom fabricated orthopaedic implant that would better fit into their unique bone structure. An implant that better fits into host bone could create a stronger attachment that could offer more functionality for the patient and reduce the chances of implant loosening (Werner et al, 2000). The option for customizable, patient-specific, orthopaedic implants is not commercially feasible at this time but could be of great benefit to any patient requiring such medical attention.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

A method to reduce smearing in the milling of metal foams

Hunt

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Design and manufacture of anatomical hip joint endoprostheses using CAD/CAM systems

Cited by 36 publications

References 4 publications

Automatic extraction of 3D anatomical feature curves of hip bone models reconstructed from CT images

Automatic extraction of 3D anatomical feature curves of hip bone models reconstructed from CT images

Design and manufacture of custom hip prostheses based on standard X-ray films

A method to reduce smearing in the milling of metal foams

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