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MRI slides for second year students in KAAU, part of the MSS
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Basic MRI Musculoskeletal Anatomy
Musculoskeletal MRI Indications
• Sport related injuries
• Mensical abnormalities
• Osteonecrosis
• Bone marrow abnormalities
• Soft tissue masses
Musculoskeletal MRI Advantages
• Superior soft tissue contrast
• Mutliplanar
• Non invasive
• No ionizing radiation
Musculoskeletal MRI Disadvantages
• Expensive
• Limited availability
• Claustrophobia
Musculoskeletal MRI Disadvantages
• Artifacts (Metal foreign objects)
• Relatively long examination
• Calcifications
FAT
Bone marrow
Blood
Contrast
Air
Cortical bone
Tendon
Ligament
Blood vessels
Muscles
Hyaline Cartilage
Fluid
MRI Knee
ACL
PCL
Patellar tendon
ACL
ACL
Lateral Meniscus
Medial Meniscus
Lateral Medial Lateral Medial Meniscus MeniscusMeniscus Meniscus
Crescent shaped fibro-cartilage . Crescent shaped fibro-cartilage .
Their main functions are shock Their main functions are shock absorption and load–bearing. absorption and load–bearing.
MRI the Shoulder
MRI ShoulderIndications
• Rotator cuff tear
• Shoulder instability
• Osteonecrosis
• Infection
• Neoplasm
What is the rotator cuff?
• A group of flat tendons that surround the front, back, and top of the shoulder joint like a cuff on a shirt sleeve
Rotator cuff muscles
• Supraspinatous
• Infraspinatous
• Teres minor
• Subscapularis
neurovascular bundle
infraspinatus
subscapularis
biceps tendon
deltoid
subscapularis tendon
long head of the biceps
teres minor muscle
infraspinatus
suprapinatus
subscapularis tendon
glenoid labrum
bicipitaltendon
Acromion
Clavicle
Subscapularis
MRI of the Ankle
MRI Ankle: Why?
• Ligament
• Tendon
• Articular cartilage
• Infection
• Soft tissue masses
• Bone marrow
Ankle Ligaments
• Lateral collateral
• Medial collateral
• Syndesmotic ligamentous complex
Lateral Collateral Ligament
• Anterior talofibular
• Posterior talofibular
• Calcaneofibular ligament
Talofibular ligaments
Calcaneofibular ligament
Copyright ©Radiological Society of North America, 2000
Rosenberg, Z. S. et al. Radiographics 2000;20:S153-S179
No Caption Found
Normal calcaneofibular ligament
Deltoid ligament
MRI of the Hip Joint
Sartorius muscle
Iliacus muscle
Rectus femoris muscle
Tensor fascia lata