Magnetic Resonance Imaging📍 Knee更新于 2025-12-15影像科审核
ACL Tear
了解 Knee Magnetic Resonance Imaging 影像中的 ACL Tear，明确其含义与下一步措施。
影像表现
Magnetic Resonance Imaging FindingDiscontinuous or lax low-signal ACL fibers with abnormal orientation; bone contusions at lateral femoral condyle and posterolateral tibia.
临床意义
Key stabilizer injury leading to instability and cartilage damage if untreated.
What is an ACL Tear?
Injury of the anterior cruciate ligament, common in pivoting sports. MRI is the gold standard for grading.
Imaging Appearance
- Fiber discontinuity or wavy ligament
- Pivot-shift bone bruises
- Anterior tibial translation
- Associated meniscal or collateral injuries
Clinical Significance
- Leads to knee instability and meniscal degeneration
- Surgical reconstruction often recommended for active patients
Symptoms
- Pop at injury, swelling, giving-way
Diagnosis
- MRI knee without contrast
- Clinical tests: Lachman, pivot-shift
Treatment
- Physical therapy; bracing
- ACL reconstruction for instability or high-demand athletes
Prognosis
- Good with rehab/reconstruction; risk of osteoarthritis over time
What Should You Do?
- Rest/ice early; seek orthopedic evaluation.
- Begin rehab to restore motion and strength.
- Discuss surgery timing if instability persists.
Medical Disclaimer: Educational only; follow orthopedic guidance.
搭配化验结果解读
当影像出现 ACL Tear 时，医生常会查看这些化验：
相关影像术语
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