| Project/Area Number |
08671660
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Orthopaedic surgery
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| Research Institution | OKAYAMA UNIVERSITY |
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Principal Investigator |
HASHIZUME Hiroyuki Okayama University Medical School, Associate Professor, 医学部, 助教授 (60237922)
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| Project Period (FY) |
1996 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Finite element method / Stress distribution / Wrist joint / Computer simulation / Pressure sensitive film / Tactile sensor |
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| Research Abstract |
To determine the usefulness of a ceramic lunate replacement for the wrist joint as a possible treatment for Kienb_ck's disease, we analyzed stress distribution by the finite element method (FEM) in five wrist joint models ; a normal wrist, one with the lunate bone removed, one with a coiled tendon replacement, one with a coiled tendon replacement with a ceramic core, and one with a ceramic lunate replacement coated with sheets of tendon. The results of FEM analyses were compared with those of pressure distribution analyses on the wrist joint using pressure-sensitive film and measurement of pressure on the radio- lunate joint with a tactile sensor. Stress and pressure were well-distributed in the Wrist joint of the ceramic lunate implant model. the coiled tendon model nor ceramic core model was able to resist applied force. These results demonstrate that the ceramic lunate implant prevents carpal collapse.
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