Distribution of Bone Contusion Patterns in Acute Noncontact Anterior Cruciate Ligament–Torn Knees
Autor: | Sophia Y. Kim-Wang, Louis E. DeFrate, Melissa Scribani, Jocelyn Wittstein, Michael B Whiteside, Tally Lassiter |
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Rok vydání: | 2021 |
Předmět: |
030222 orthopedics
Tibia medicine.diagnostic_test business.industry Anterior Cruciate Ligament Injuries Contusions Anterior cruciate ligament Physical Therapy Sports Therapy and Rehabilitation Magnetic resonance imaging 030229 sport sciences Anatomy Magnetic Resonance Imaging Article 03 medical and health sciences Cross-Sectional Studies 0302 clinical medicine medicine.anatomical_structure nervous system medicine Humans Distribution (pharmacology) Orthopedics and Sports Medicine Femur business Retrospective Studies |
Zdroj: | Am J Sports Med |
ISSN: | 1552-3365 0363-5465 |
Popis: | Background: Bone contusions are commonly observed on magnetic resonance imaging (MRI) in individuals who have sustained a noncontact anterior cruciate ligament (ACL) injury. Time from injury to image acquisition affects the ability to visualize these bone contusions, as contusions resolve with time. Purpose: To quantify the number of bone contusions and their locations (lateral tibial plateau [LTP], lateral femoral condyle [LFC], medial tibial plateau [MTP], and medial femoral condyle [MFC]) observed on MRI scans of noncontact ACL-injured knees acquired within 6 weeks of injury. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We retrospectively reviewed clinic notes, operative notes, and imaging of 136 patients undergoing ACL reconstruction. The following exclusion criteria were applied: MRI scans acquired beyond 6 weeks after injury, contact ACL injury, and previous knee trauma. Fat-suppressed fast spin-echo T2-weighted MRI scans were reviewed by a blinded musculoskeletal radiologist. The number of contusions and their locations (LTP, LFC, MTP, and MFC) were recorded. Results: Contusions were observed in 135 of 136 patients. Eight patients (6%) had 1 contusion, 39 (29%) had 2, 41 (30%) had 3, and 47 (35%) had 4. The most common contusion patterns within each of these groups were 6 (75%) with LTP for 1 contusion, 29 (74%) with LTP/LFC for 2 contusions, 33 (80%) with LTP/LFC/MTP for 3 contusions, and 47 (100%) with LTP/LFC/MTP/MFC for 4 contusions. No sex differences were detected in contusion frequency in the 4 locations ( P > .05). Among the participants, 50 (37%) had medial meniscal tears and 52 (38%) had lateral meniscal tears. Conclusion: The most common contusion patterns observed were 4 locations (LTP/LFC/MTP/MFC) and 3 locations (LTP/LFC/MTP). |
Databáze: | OpenAIRE |
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