1998 Fiscal Year Final Research Report Summary
Pathogenesis and treatment of gonarthrosis spatial aspect on the thrust of osteoarthritic knees.
| Project/Area Number |
09671530
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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 | Fukuoka University |
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Principal Investigator |
OGATA Kosuke Fukuoka Univ., Sch.of Med., Professor, 医学部, 教授 (40136437)
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| Co-Investigator(Kenkyū-buntansha) |
HARA Michiya Fukuoka Univ., Hospital, Assist.Instructor, 助手 (40248513)
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| Project Period (FY) |
1997 – 1998
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| Keywords | osteoarthritic knees / wedged-insole / accelerometric / joint sound / hyaluronic acid / thrust |
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| Research Abstract |
Accelerometric and foot pressure analyses were performed on normal and osteoarthritic knees while walking. A laterally elevated wedged-insole was found to decreasa the magnitude of the lateral accelcration while increasing the medial length of the center of foot pressure. The insole thus proved effective for the conservative treatment of the medial compartment CA knees. However, when analyzing the therapeutic efficacy of the insole according to the biomechanical and radiographic stage, use of such insole therapy proved to be less in obase patients. These findings thus suggest that insole therapy is not appliciable to all individuals.
We evaluated the effect of hyaluronic acid on severe osteoarthritis by joint sound. The subjects were 40 knees of 40 end stage OA patients (8 male, 32 female) with a mean age of 66.7 years. HA was administered to them once. Before and after the injection into the knee joint, we measured joint sounds 5 times while bending and stretcing the joint. The sound were recorded by Bruel & Kjaer 4189 type microphones and input into a 2 channel analysis device, and then the fast fourier transformed frequency spectru** was analyzed. The mean frequency before HA administration was 422.5*68.9Hz, and 219.4*22.9Hz immediately after, indicating a significant decrease in frequency. There was no significant difference seen in the control group after administration. This showed that injection of HA in to the knee joint had a lubricating function.
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[Publications] Okawa, T., Ogata, K., Hara, M., Chou, K., Takagishi, H., Yasunaga, M.and Nishino, I.: "Effects of cane or crutch on the lateral thrust of the knee : Evaluation with accelerometric technique." Clinical Orthopaedic Surgery. 32-10. 1113-1118 (1997)
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[Publications] Yamada, M., Ogata, K., Hara, M., Emoto, G., Hoshiko, I., Fujiwara, A., Saeki, K., Kanamiya, T.and Matsuura, I.: "Effects of factors on insole therapy of osteoarthrosis of the knee." J.Jpn.Orthop.Assoc.71-4. S752 (1997)
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[Publications] Matsuura, I., Ogata, K., Hara, M., Yamada, M., Hoshiko, I., Fujiwara, A., Saeki, K.and Kanamiya, T.: "The influence that is given to knee joint sound by the injection of hyaluronic acid in knee joint." Association Program and Abstracts, p.78,1997 The 25th Congress of the Japanese Society of Rheumatismand Joint Surgery Program and Abstracts. 49 (1997)
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[Publications] Kanamiya, T,Ogata, K., Hara, M., Jojima, H., Saeki, K., Fujiwara, A.and Matsuura, I.: "High tibial osteotomy for the elderly in medial compartment osteoarthosis." Jpn.J.Rheum.Joint Surg.17-2. 133-138 (1998)
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