Details
| Original language | English |
|---|---|
| Pages (from-to) | 263-269 |
| Number of pages | 7 |
| Journal | Biomedizinische Technik |
| Volume | 62 |
| Issue number | 3 |
| Publication status | Published - 24 May 2017 |
Abstract
Patient-specific instruments (PSIs) are clinically used to support the surgeon during a planned intervention. The planning is typically done based on volumetric image data from medical imaging systems, e.g. computed tomography (CT). The PSI uses the known surface structure of a bone for orientation during the intervention. Some surfaces of human bone are covered with a layer of cartilage which is hardly visible in clinically applied CT-imaging. This experimental study investigates ten different PSI designs and their effect to the overall accuracy when neglecting the cartilage in the design process. Therefore, a model of an acetabulum is used to simulate the use case of PSI in total hip arthroplasty. The concept of the different designs is to create structural elasticities in the PSI to avoid shifting of the whole instrument and rather have a small part of it deformed by cartilage. A needle array structure, for instance, should also be able to oust or penetrate remaining soft tissue in the acetabulum.
Keywords
- acetabulum, cartilage, patient-specific instruments, total hip arthroplasty
ASJC Scopus subject areas
- Engineering(all)
- Biomedical Engineering
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In: Biomedizinische Technik, Vol. 62, No. 3, 24.05.2017, p. 263-269.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Design considerations for patient-specific surgical templates for total hip arthroplasty with respect to acetabular cartilage
AU - Müller, Samuel
AU - Ahmad, Intsar
AU - Kraemer, Manuel
AU - Utz, Michael
AU - Gaa, Johannes
AU - Kahrs, Lüder A.
AU - Ortmaier, Tobias
PY - 2017/5/24
Y1 - 2017/5/24
N2 - Patient-specific instruments (PSIs) are clinically used to support the surgeon during a planned intervention. The planning is typically done based on volumetric image data from medical imaging systems, e.g. computed tomography (CT). The PSI uses the known surface structure of a bone for orientation during the intervention. Some surfaces of human bone are covered with a layer of cartilage which is hardly visible in clinically applied CT-imaging. This experimental study investigates ten different PSI designs and their effect to the overall accuracy when neglecting the cartilage in the design process. Therefore, a model of an acetabulum is used to simulate the use case of PSI in total hip arthroplasty. The concept of the different designs is to create structural elasticities in the PSI to avoid shifting of the whole instrument and rather have a small part of it deformed by cartilage. A needle array structure, for instance, should also be able to oust or penetrate remaining soft tissue in the acetabulum.
AB - Patient-specific instruments (PSIs) are clinically used to support the surgeon during a planned intervention. The planning is typically done based on volumetric image data from medical imaging systems, e.g. computed tomography (CT). The PSI uses the known surface structure of a bone for orientation during the intervention. Some surfaces of human bone are covered with a layer of cartilage which is hardly visible in clinically applied CT-imaging. This experimental study investigates ten different PSI designs and their effect to the overall accuracy when neglecting the cartilage in the design process. Therefore, a model of an acetabulum is used to simulate the use case of PSI in total hip arthroplasty. The concept of the different designs is to create structural elasticities in the PSI to avoid shifting of the whole instrument and rather have a small part of it deformed by cartilage. A needle array structure, for instance, should also be able to oust or penetrate remaining soft tissue in the acetabulum.
KW - acetabulum
KW - cartilage
KW - patient-specific instruments
KW - total hip arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=85020390586&partnerID=8YFLogxK
U2 - 10.1515/bmt-2016-0020
DO - 10.1515/bmt-2016-0020
M3 - Article
C2 - 27371818
AN - SCOPUS:85020390586
VL - 62
SP - 263
EP - 269
JO - Biomedizinische Technik
JF - Biomedizinische Technik
SN - 0013-5585
IS - 3
ER -