The
Posterolateral Corner of the Knee
PLC : injury and
clinical impact
An overlooked injury:
–
Chronic pain
– Osteoarthritis
–
Outcome of ACL reconstruction
MR diagnostic:
–
Direct signs
– Indirect signs (associated injuries)
Mechanism
of injury
High-energy trauma
•
Direct or indirect mechanism
• Varus forces
•
Valgus forces
• External rotation forces
Imaging
Diagnosis
An early and correct diagnosis of PLC
injuries is mandatory
• Arthroscopy
evaluation
of PT, lateral meniscus and cartilage
invasive
•
Magnetic Resonance Imaging is the method of choise | 
|
Injuries
of PLC
Clinical examination:
•
Can overlook a PLC injury
• Difficult in acute phase
(pain, edema)
• Difficult in the presence of
associated injuries
• Accuracy decrease with no of
lesions
Miller TT. AJR 1997; 169:1641-1647
| Trauma
with external rotation |
MR findings:
•
Same with other ligamentous injuries
•
Edema, blood, discontinuity – partial tear, complete tear,
hematoma
55-year-old patient with knee trauma
after a varus injury
October 18,
2009
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