MRI KNEE JOINT

MRI Knee Joint Overview

Introduction 

An MRI of knee joint is a non-invasive diagnostic technique that uses strong magnetic fields and radio waves to obtain images of the knee and its associated structures, such as the bones, cartilage, ligaments, tendons, and soft tissues, at high resolution. The procedure does not involve the use of ionizing radiation, which makes it safe for diagnosing injuries and medical conditions. 

What’s MRI Knee Joint? 

The procedure involves the use of powerful magnets and radiofrequency waves to obtain detailed images of the knee and its components. MRIs of the knee are particularly useful for examining soft tissue injuries, joint disorders, and bone abnormalities, due to their high contrast resolution. 

Types of MRI Knee Joint 

• Conventional MRI - standard MRI technique for the investigation of soft tissues and bones 
• Contrast enhanced MRI - uses Gadolinium based contrast for better visualization of tumours, infections, and vascular abnormalities 
• 3D MRI - detailed high-resolution images for planning surgery 

Parameters Considered During MRI Knee Joint

• Integrity of ligaments (ACL, PCL, MCL, LCL) 
• Condition of the menisci and cartilage 
• Joint space and presence of inflammation  
• Bone structure and signs of fractures or cysts 
• Presence of fluid accumulation or effusion 

Reasons for Taking an MRI Knee Joint

• Suspected ligament or tendon injuries 
• Diagnosing meniscus tears or cartilage damage 
• Evaluating joint disorders such as arthritis or bursitis 
• Detecting bone fractures, lesions, or avascular necrosis 
• Preoperative and postoperative assessment 

When and Who Needs an MRI Knee Joint? 

Indications: 

• Ongoing knee discomfort, swelling, or stiffness 
• Possible ligament or meniscal tears 
• Cartilage degeneration, arthritis, or post traumatic assessment of fractures 
• Soft tissue injury evaluation 
• Weight-bearing instability 
• Bone interpretational surgery 
• Pre-operative assessment 

Patient Demographics: 

• Sportsmen with acute knee injuries 
• Patients suffering from chronic knee pain 
• Inactive and sedentary individuals with trauma or degenerative joint disease 
• People with infection or unexplained swelling 

Benefits of Taking the Test

• Non-invasive and radiation-free 
• Provides high-resolution images of soft tissues and bones 
• Helps in early diagnosis and treatment planning 
• Essential for accurate assessment of knee injuries 

Illnesses Diagnosed with MRI Knee Joint

• ACL, PCL, MCL, or LCL tears 
• Meniscus tears and cartilage damage 
• Osteoarthritis and inflammatory joint diseases 
• Bone fractures, lesions, and avascular necrosis 
• Joint infections and bursitis 

Preparing for MRI Knee Joint

• Remove metal accessories and electronic devices 
• Wear comfortable, loose-fitting clothing 
• Notify the technician about implants or pregnancy 
• Fasting may be required if contrast is used 

Pre-requisites 

• No prior allergy to contrast (if MRI with contrast is required)  
• Pre-medication for anxiety or claustrophobia, if needed 

Best Time for MRI of the Knee Joint 

• Any time recommended by the physician  
• Prepared to minimize waiting time, enhancing availability 

Eligibility 

Considered safe for most patients except those with metal implants, pacemakers, or other conflicting devices. 

Procedure for taking an MRI of the Knee Joint 

• The patient reclines on the MRI bed and the knee is placed in the centre of the scanner.  
• A coil is positioned around the knee to improve the quality of the pictures obtained.  
• The MRI device captures images of the knee joint using a strong magnetic field and radio waves.  
• Duration of the procedure is between 30-60 minutes.  
• If required, contrast can be injected. 

Cautions Before the Test 

• Notify the radiologist if pregnant, having kidney problems or metal implants.  
• Images captured while staying still are clearer.