Early postoperative cartilage evaluation by magnetic resonance imaging using T2 mapping after arthroscopic partial medial meniscectomy

Kato, Kammei; Ikoma, Kazuya; Nakagawa, Shuji; Inoue, Hiroaki; Kan, Hiroyuki; Matsuki, Tomohiro; Fujiwara, Hiroyoshi; Kubo, Toshikazu

doi:10.1016/j.mri.2015.08.002

Cited by 6 publications

(6 citation statements)

References 28 publications

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“…However, it is now accepted that these procedures result in increased contact pressure between the femoral condyle and the tibial plateau and hence, an increased risk of osteoarthritis. [ 7 , 8 , 23 , 24 ] Consequently, current surgical options attempt to preserve the meniscus. The inside-out method and the all-inside method, which were developed for repairing horizontal meniscal tears, have also been reported to have good treatment results.…”

Section: Discussionmentioning

confidence: 99%

“…[ 6 ] Partial resection of the damaged meniscus can lead to rapid cartilage degeneration and increase the risk of osteoarthritis. [ 7 – 11 ] The progression of osteoarthritis following meniscectomy is more apparent in active patients. [ 12 ] Hence, it is necessary to optimally repair the damaged meniscus and preserve its function, especially in patients with an active lifestyle.…”

Section: Introductionmentioning

confidence: 99%

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Outcomes of arthroscopic repair using the all-inside inter-leaf vertical suture technique for horizontal meniscal tears sustained in sports

et al. 2020

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The aim of the study was to evaluate the outcomes of arthroscopic repair using the all-inside inter-leaf vertical suture arthroscopic technique for sports-related horizontal meniscal tears. The inter-leaf vertical suture procedure was performed to repair sports-related horizontal tears in the middle and posterior segments of the medial (11 cases) and lateral (2 cases) menisci in 13 patients (mean age: 30 ± 14 years). Pre- and post-operative Barrett criteria, Lysholm scores, and patient ability to resume sports were assessed. Magnetic resonance imaging (MRI) grades and signal intensity changes near the joint capsule were evaluated in the 9 cases among which pre- and post-operative MRI images were available. All Barrett criteria items were negative following surgery; Lysholm scores increased from 70.2 ± 13.1 before surgery to 98.9 ± 2.64 after surgery ( P < .01). All patients were able to resume their sport. Preoperative MRI grade of tears was 3 for all patients; postoperative MRI grades were 1 in 3 cases, 2 in 4 cases, and 3 in 2 cases ( P < .05). Importantly, MRI signal intensity at the repaired menisci near the joint capsule was reduced in 8 of these 9 cases postoperatively. The inter-leaf vertical suture procedure is associated with good outcomes for horizontal tears in the middle and posterior segments of the medial and lateral menisci. The procedure is useful and convenient.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Outcomes of arthroscopic repair using the all-inside inter-leaf vertical suture technique for horizontal meniscal tears sustained in sports

et al. 2020

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“…2 ). [ 11 ] The depth of each ROI was set to encompass both the superficial and intermediate zones. To avoid partial volume effects, ROIs were set a few pixels from the surface of the articular cartilage, and the difference in each T2 ROI from before to after the operation was determined.…”

Section: Methodsmentioning

confidence: 99%

“…T2 values have been reported to be increased mostly at the 30-degree ROI, with an average increase of 6%, following resection of the medial meniscus. [ 11 ] Therefore, the cut off T2 value for cartilage degeneration was set at an increase of 6%; knees with T2 values at 30° >6% and <5% higher postoperatively than preoperatively were defined as the moderate and mild degeneration groups, respectively. Age, gender distribution, BMI, FTA, Kellgren–Lawlence (KL) classification of the lateral femorotibial joint, Tegner activity score, variations in the meniscal tear, and total excision of the meniscal segment were compared in these 2 groups.…”

Section: Methodsmentioning

confidence: 99%

“…[ 4 – 10 ] T2 mapping has been used to evaluate quantitative changes in articular cartilage soon after arthroscopic medial meniscectomy. [ 11 ] Regions of interest (ROIs) were set at 10-degree intervals relative to the axis of the femur shaft. This method confirmed irregular collagen alignment and increased water content at points of bending, located 20 °, 30 °, 40 °, and 50 ° relative to the femur shaft, and was particularly effective at showing marked changes at 30°.…”

Section: Introductionmentioning

confidence: 99%

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Total resection of any segment of the lateral meniscus may cause early cartilage degeneration

Murakami¹,

Ikoma²,

Kato³

et al. 2018

Medicine

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The aim of this study was to perform quantitative evaluation of degeneration of joint cartilage using T2 mapping in magnetic resonance imaging (MRI) after arthroscopic partial resection of the lateral meniscus.The subjects were 21 patients (23 knees) treated with arthroscopic partial resection of the lateral meniscus. MRI was performed for all knees before surgery and 6 months after surgery to evaluate the center of the lateral condyle of the femur in sagittal images for T2 mapping. Ten regions of interest (ROIs) on the articular cartilage were established at 10-degree intervals, from the point at which the femur shaft crossed the lateral femoral condyle joint to the articular cartilage 90° relative to the femur shaft. Preoperative and postoperative T2 values were evaluated at each ROI. Age, sex, body mass index, femorotibial angle, Tegner score, and amount of meniscal resection were evaluated when the T2 value increased more than 6% at 30°.T2 values at approximately 10 °, 20 °, 30 °, 40 °, 50 °, and 60 ° degrees relative to the anatomical axis of the femur were significantly greater postoperatively (3.1, 3.6, 5.5, 4.4, 5.0, 6.4%, respectively) than preoperatively. A >6% increase at 30° was associated with total resection of any segment of the meniscus.Degeneration of the articular cartilage, as shown by the disorganization of collagen arrays at positions approximately 10 °, 20 °, 30 °, 40 °, 50 °, and 60 ° relative to the anatomical axis of the femur, may start soon after arthroscopic lateral meniscectomy. Total resection of any segment of the lateral meniscus may cause T2 elevation of articular cartilage of lateral femoral condyle.

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Magnetic Resonance Imaging T2 Relaxation Times of Articular Cartilage Before and After Arthroscopic Surgery for Discoid Lateral Meniscus

Nishino

Hashimoto

Nishida

et al. 2021

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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Early postoperative cartilage evaluation by magnetic resonance imaging using T2 mapping after arthroscopic partial medial meniscectomy

Cited by 6 publications

References 28 publications

Outcomes of arthroscopic repair using the all-inside inter-leaf vertical suture technique for horizontal meniscal tears sustained in sports

Outcomes of arthroscopic repair using the all-inside inter-leaf vertical suture technique for horizontal meniscal tears sustained in sports

Total resection of any segment of the lateral meniscus may cause early cartilage degeneration

Magnetic Resonance Imaging T2 Relaxation Times of Articular Cartilage Before and After Arthroscopic Surgery for Discoid Lateral Meniscus

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