Follow-up Magnetic Resonance Imaging Studies After Arthroscopic Meniscectomy

Between June 1998 and January 2000, 83 patients underwent preoperative MRI and subsequent arthroscopy. Twenty-two patients were available for this study. They had undergone arthroscopical meniscectomy, and follow-up MRI was obtained three months after arthroscopy. Intensity change of the bone marrow...

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Published inOrthopedics & Traumatology Vol. 50; no. 2; pp. 408 - 411
Main Authors Hamasaki, Akihiko, Ishinishi, Shigeru, Hotokezaka, Shunsuke, Yamaguchi, Tsukasa
Format Journal Article
LanguageEnglish
Published West-Japanese Society of Orthopedics & Traumatology 2001
Subjects
Arthroscopy
Follow-up
Magnetic Resonance Imaging
Meniscectomy
Osteonecrosis
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Abstract Between June 1998 and January 2000, 83 patients underwent preoperative MRI and subsequent arthroscopy. Twenty-two patients were available for this study. They had undergone arthroscopical meniscectomy, and follow-up MRI was obtained three months after arthroscopy. Intensity change of the bone marrow was recognized in five patients (23%), which suggested osteonecrosis or edema of the subchondral bone. Lateral subluxation of the retained lateral menisci occurred in three patients. Since the frequency of abnormal findings is low and the cost of MRI is expensive, we recommend follow-up MRI after arthroscopic meniscectomy only when the patients have sustained symptoms.
AbstractList Between June 1998 and January 2000, 83 patients underwent preoperative MRI and subsequent arthroscopy. Twenty-two patients were available for this study. They had undergone arthroscopical meniscectomy, and follow-up MRI was obtained three months after arthroscopy. Intensity change of the bone marrow was recognized in five patients (23%), which suggested osteonecrosis or edema of the subchondral bone. Lateral subluxation of the retained lateral menisci occurred in three patients. Since the frequency of abnormal findings is low and the cost of MRI is expensive, we recommend follow-up MRI after arthroscopic meniscectomy only when the patients have sustained symptoms.
Author Hamasaki, Akihiko
Yamaguchi, Tsukasa
Ishinishi, Shigeru
Hotokezaka, Shunsuke
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  organization: Department of Orthopaedic Surgery, Mitsubishi Chemistry Hospital
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  fullname: Hotokezaka, Shunsuke
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  fullname: Yamaguchi, Tsukasa
  organization: Department of Orthopaedic Surgery, Mitsubishi Chemistry Hospital
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References 3) Jackson, D. W. et al.: Magnetic resonance imaging of the knee. Am. J. Sports Medicine, 16: 29-37, 1988.
5) 王寺亨弘ほか: 中高年者の膝半月板切除後のMRI ―骨髄信号強度の変化について―. 日整誌, 74 (1): S521, 2000.
4) Mink, J. H, et al.: Tears of the anterior cruciate ligament and menisci of the knee: MR imaging evaluation. Radiology, 167: 769-774, 1988.
6) Thomas Muellner, et al.: Open Meniscal Repair: Clinical and Magnetic Resonance Imaging Findings After Twelve Years. Am. J. Sports Medicine, 27: 16-20, 1999.
1) Fischer, S. P. et al.: Accuracy of diagnosis from magnetic resonance imaging of the knee. J Bone Joint Surg, 73-A: 2-10, 1991.
2) 浜崎晶彦ほか: 膝半月板および十字靱帯損傷のMRI診断. 整形外科と災害外科, 49 (1): 1-5, 2000.
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SubjectTerms Arthroscopy
Follow-up
Magnetic Resonance Imaging
Meniscectomy
Osteonecrosis
Title Follow-up Magnetic Resonance Imaging Studies After Arthroscopic Meniscectomy
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