Unique ID issued by UMIN | UMIN000001333 |
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Receipt number | R000001619 |
Scientific Title | MRI study of steroid-induced osteonecrosis |
Date of disclosure of the study information | 2008/08/22 |
Last modified on | 2009/08/23 22:24:03 |
MRI study of steroid-induced osteonecrosis
MRI study of steroid-induced osteonecrosis
MRI study of steroid-induced osteonecrosis
MRI study of steroid-induced osteonecrosis
Japan |
systemic lupus erythematosus and steroid-induced osteonecrosis
Clinical immunology | Orthopedics |
Others
NO
Osteonecrosis is assocated with high-dose corticosteroid therapy and systemic lupus erythematosus (SLE). Early-stage osteonecrosis has been frequently misdiagnosed due to a lack of symptoms and changes observed with simple x-ray imaging. Currently, MRI is the gold standard for initial diagnosis of osteonecrosis. The frequency of steroid-induced osteonecrosis as observed with MRI is highest in the knee, followed by the hip, ankle, and shoulder joints, in that order. Thus MRI of bilateral hip and knee joints are effective as the screening examination of osteonecrosis.
SLE is one of the most frequent diseases underlying steroid-induced osteonecrosis, and its diagnostic criteria and treatment guidelines has been well established. We reported a prospective MRI study of SLE patients with 44 % of incidence of osteonecrosis at about three months after the initial steroid therapy. To our knowledge, however, long-term natural history of asymptomatic osteonecrosis has been unknown so far.
The purpose of this study was to clarify the long-term natural history of asymptomatic and non-collapsed osteonecrosis associated with corticosteroid therapy in SLE patients using MRI.
Others
Observational study of epidemiology
Exploratory
Pragmatic
Not applicable
Changes of the necrotic area were evaluated as either improved, aggravated, or unchanged. Improvement was defined as either a reduction or disappearance of osteonecrosis, with reduction defined as an improvement of more than one type of the 2001 revised criteria for classification of osteonecrosis of the femoral head of the Japanese Ministry of Health, Labor and Welfare. Aggravation was defined as enlargement of a previous osteonecrotic lesion, a new lesion, and/or collapse of osteonecrosis. Enlargement included both cases that were enlarged after reduction of the necrotic area or were reduced after enlargement. Collapse was defined as MR finding of bone marrow edema with clinical symptom of pain. Collapse included cases subsequent to enlarged or new osteonecrotic lesions. Unchanged was defined as no change of the necrotic area.
A p-value less than 0.05 is considered significant using Fisher exact probability test.
The total cumulative corticosteroid dose (g), mean corticosteroid dosage (mg/day), and duration of corticosteroid treatment (years) were compared between joints with and without osteonecrosis.
Observational
Not applicable |
Not applicable |
Male and Female
(1) The patients fulfill the 1982 revised criteria for the classification of SLE of American College of Rheumatology
(2)Asymptomatic joints at the initial examination
(3) MRI screening for osteonecrosis of all hip and knee joints
(4) Non-collapsed osteonecrosis at the initial MRI examination
(5) Periodic MRI examinations of all hip and knee joints
(6) Prospectively follow-up for at least 10 years
(7) Imformed consent about this study
(8) Outpatients
(1) Previous trauma and surgery
(2) MRI can not undergo.
(3) Unfavorable patient condition
(4) Inappropriate patient
120
1st name | |
Middle name | |
Last name | NAKAMURA JUNICHI |
Chiba University Hospital
Orthopaedic Surgery
1-8-1, Inohana, Chuo-ku, Chiba city
043-226-2117
1st name | |
Middle name | |
Last name | NAKAMURA JUNICHI |
Chiba University Hospital
Orthopaedic Surgery
1-8-1, Inohana, Chuo-ku, Chiba city
shiken@office.chiba-u.jp
Department of Orthopaedic Surgery, Graduate school of Medicine, Chiba University
None
Self funding
NO
2008 | Year | 08 | Month | 22 | Day |
Unpublished
Completed
2008 | Year | 08 | Month | 22 | Day |
2008 | Year | 08 | Month | 01 | Day |
2009 | Year | 03 | Month | 01 | Day |
2009 | Year | 08 | Month | 01 | Day |
2009 | Year | 08 | Month | 01 | Day |
2009 | Year | 08 | Month | 01 | Day |
Influential factor: steroid
Outcome: necrotic area
Prospective study
Sampling of case control study
2008 | Year | 08 | Month | 22 | Day |
2009 | Year | 08 | Month | 23 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000001619
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