MCL injuries

Question 1

Mechanism of injury

Answer 1

• Direct trauma to the lateral knee creating a valgus force

Question 2

Superficial & Deep fibers

Answer 2

• Superficial: local swelling
• Deep: Larger swelling & effusion

Question 3

MCL Injury Classification

Answer 3

• Grade 1: Palpatory tenderness
• Grade 2: Gapping & Pain, Increased values laxity at 20-30 flexion, Soft End feel
• Grade 3: Greatest valgus laxity at 0 and 20-30 flexion, Soft End feel

Question 4

MCL Tear is usually combined with what other tear for Surgical Management

Answer 4

• Posterior Oblique Ligament tears

Question 5

Surgical choices for MCL injury

Answer 5

• Primary Repair
• Reconstruction
• Allografts: Tibialis Anterior
• Autografts: Semitendonosis & Gracilis

Question 6

Unhappy Triad

Answer 6

• ACL/MCL/ MM
• ACL reconstruction: more blood supply
• Protect MCL (non-operative)
• Meniscectomy or Repair