Routine Investigations

Knee

X-rays: Routine weight-bearing views are the first line imaging required. They should include:

• Standing AP in extension
• Rosenberg or skiers view
• Standing lateral at 30deg flexion
• A skyline Patellar

MRI: Should not be ordered routinely where x-rays show osteoarthritis particularly if the patient is over 60 years of age. MRI should be ordered if the following are suspected:

• Meniscus tear
• Ligament injury
• Cartilage injury
• Patellar instability
• Malignant disease

Hip

X-rays: Routine weight-bearing views are the first line imaging required especially in osteoarthritis. They should include:

• Standing AP pelvis
• Lateral hip

MRI: Rarely of use in osteoarthritis. MRI should be ordered when the following is suspected:

• Young patient
• Labral tear
• Trochanteric pain
• Malignant disease