Collateral Ligament

Question 1

What is function of lateral and medial collateral ligaments

Answer 1

Lateral - resist varus force on knee

Medial - resist valgus force on knee

Question 2

EPIDEMIOLOGY

Which injury is most common

Answer 2

Medial collateral ligament

Question 3

AETIOLOGY

Main cause

Answer 3

Excessive varus or valgus force onto the knee, such as in sports

Question 4

CLINICAL FEATURES

Presentation

Answer 4

• Knee pain
• On exam
  
  • Increased laxity with valgus/varus stress

Question 5

Increased laxity with varus or valgus stress suggests

Answer 5

Varus - lateral injury

Valgus - medial injury

Question 6

INVESTIGATIONS

First choice

Answer 6

• Clinical diagnosis supported by imaging
• X ray - eliminate fracture

Question 7

MANAGEMENT

General principles

Answer 7

• Conservative
  
  • Physiotherapy
• Operative
  
  • Orthopaedic surgery for severe tears