caa a22 4500 60545857X CHVBK 20210128100229.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-014-3469-4 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3469-4 Subclinical cartilage degeneration in young athletes with posterior cruciate ligament injuries detected with T1ρ magnetic resonance imaging mapping [Elektronische Daten] [Ken Okazaki, Yukihisa Takayama, Kanji Osaki, Yoshio Matsuo, Hideki Mizu-uchi, Satoshi Hamai, Hiroshi Honda, Yukihide Iwamoto] Purpose: Prediction of the risk of osteoarthritis in asymptomatic active patients with an isolated injury of the posterior cruciate ligament (PCL) is difficult. T1ρ magnetic resonance imaging (MRI) enables the quantification of the proteoglycan content in the articular cartilage. The purpose of this study was to evaluate subclinical cartilage degeneration in asymptomatic young athletes with chronic PCL deficiency using T1ρ MRI. Methods: Six athletes with chronic PCL deficiency (median age 17, range 14-36years) and six subjects without any history of knee injury (median age 31.5, range 24-33years) were recruited. Regions of interest were placed on the articular cartilage of the tibia and the distal and posterior areas of the femoral condyle, and T1ρ values were calculated. Results: On stress radiographs, the mean side-to-side difference in posterior laxity was 9.8mm. The T1ρ values at the posterior area of the lateral femoral condyle and the superficial layer of the distal area of the medial and lateral femoral condyle of the patients were significantly increased compared with those of the normal controls (p<0.05). At the tibial plateau, the T1ρ values in both the medial and lateral compartments were significantly higher in patients compared with those in the normal controls (p<0.05). Conclusion: T1ρ MRI detected unexpected cartilage degeneration in the well-functioning PCL-deficient knees of young athletes. One should be alert to the possibility of subclinical cartilage degeneration even in asymptomatic patients who show no degenerative changes on plain radiographs or conventional MRI. Level of evidence: IV. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2014 Posterior cruciate ligament (PCL) nationallicence Conservative treatment nationallicence Osteoarthritis nationallicence Cartilage nationallicence Magnetic resonance imaging (MRI) nationallicence Okazaki Ken Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut Takayama Yukihisa Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut Osaki Kanji Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut Matsuo Yoshio Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut Mizu-uchi Hideki Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut Hamai Satoshi Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut Honda Hiroshi Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut Iwamoto Yukihide Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3094-3100 0942-2056 23:10<3094 2015 23 167 https://doi.org/10.1007/s00167-014-3469-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3469-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okazaki Ken Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut NATIONALLICENCE 700 1- Takayama Yukihisa Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut NATIONALLICENCE 700 1- Osaki Kanji Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut NATIONALLICENCE 700 1- Matsuo Yoshio Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut NATIONALLICENCE 700 1- Mizu-uchi Hideki Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut NATIONALLICENCE 700 1- Hamai Satoshi Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut NATIONALLICENCE 700 1- Honda Hiroshi Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan aut NATIONALLICENCE 700 1- Iwamoto Yukihide Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-0054, Fukuoka, Japan aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3094-3100 0942-2056 23:10<3094 2015 23 167