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What are Radial Head Fractures?
Dr Kau Chung Yuan (许医生)
MBBS (S’PORE)
MRCS (Ireland)
MMed (Ortho)
FRCSEd (Ortho)
What are Radial Head Fractures?
Forearm fractures refer to breaks or cracks in one or both of the bones of the forearm—the radius and the ulna. These injuries can vary widely in severity, from simple fractures that may heal with conservative management to complex ones requiring surgical intervention.
Forearm fractures are significant because they impact arm movement and functionality. Understanding the type, cause, and appropriate treatment can contribute greatly to effective recovery.
Classification of Radial Head Fractures
Radial head fractures are classified based on the extent of the fracture and its impact on the elbow joint’s stability. The most widely used system is the Mason Classification, which is divided into three main types:
Type I Fractures
These are simple, nondisplaced fractures where the bone pieces do not move out of place. They often require minimal treatment and have a good prognosis.
Type II Fractures
Type II fractures are partial fractures with displacement, meaning the bone pieces have moved out of their original position. If they are significantly displaced or if they affect the joint’s function, surgery may be required.
Type III Fractures
These are the most severe, involving a complete fracture of the radial head with multiple fragments, and usually require surgical intervention to restore the elbow’s function and stability.
Causes of Radial Head Fractures
Radial head fractures are commonly caused by:
- Falls onto an Outstretched Arm
The primary mechanism of injury, where force is transferred through the forearm to the radial head. - Severe Twisting Motions
Uncommon causes that involve rotational forces acting on the elbow, often seen in contact sports or accidents. - Direct Blows to the Elbow
Less common; these occur from impacts directly to the elbow area.
Symptoms and Diagnosis
Symptoms
Patients with radial head fractures may exhibit the following:
- Pain and Tenderness: Located around the outside of the elbow.
- Swelling and Bruising: Visible signs of injury around the elbow.
- Reduced Range of Motion: Difficulty in rotating the forearm and bending the elbow.
- Clicking or Locking Sensation: Some individuals may experience these sensations in the elbow joint.
Diagnosis
Medical imaging is utilised to confirm the diagnosis of a radial head fracture and accurately classify the fracture. X-rays are the primary diagnostic tool, offering clear images of bone structure and fracture details. In certain cases, where X-ray results are inconclusive or more detail is needed about the injury’s complexity, a computed tomography (CT) scan or magnetic resonance imaging (MRI) may be recommended.
These imaging modalities provide comprehensive views of the elbow’s soft tissues and bone, aiding in the precise planning of treatment strategies.
Non-surgical Treatment
Treatment may not require surgery for minor or nondisplaced fractures (typically Mason Type I). The approach includes:
Rest And Immobilization
A splint or sling may be used for a few weeks to restrict movement and allow the fracture to heal.
Pain Management
Over-the-counter pain relievers and ice can help manage pain and reduce swelling.
Physical Therapy
After the initial healing period, physical therapy can help restore range of motion and strength.
Surgical Treatment
Surgical intervention may be necessary for displaced fractures (Mason Type II or III) or if the fracture affects the joint’s stability. Surgical options include:
- Open Reduction And Internal Fixation (ORIF)
This procedure realigns the fractured bone pieces and secures them with screws and plates. - Radial Head Replacement
In cases where the radial head is severely fractured, it may be replaced with an artificial implant to restore elbow function.
Rehabilitation and Recovery
The recovery process varies depending on the severity of the fracture and the treatment method employed. A comprehensive rehabilitation program typically includes:
Initial Rest and Gradual Mobilisation
Early stages focus on reducing pain and inflammation, followed by gradual mobilisation to prevent stiffness.
Physical Therapy
Tailored exercises are introduced to improve range of motion, strength, and flexibility. The specific exercises depend on the patient’s progress and treatment goals.
Activity Modification
Patients are advised to avoid activities that could stress the healing elbow until fully recovered.
Regular Follow-up
Monitoring ensures that recovery is on track and allows adjustments to the rehabilitation program as needed.
Complications of Radial Head Fractures
While many individuals recover fully from radial head fractures, complications can arise, affecting the outcome. Potential complications include:
- Stiffness and Limited Range of Motion
The elbow and forearm may not regain their full range of motion, leading to long-term mobility issues. - Elbow Instability
If the fracture disrupts the joint’s stability, this can result in ongoing joint hypermobility and weakness. - Post-traumatic Arthritis
Damage to the joint surface after a fracture can increase the risk of elbow arthritis over time, especially if cartilage wear leads to ongoing pain and stiffness. - Nonunion or Malunion
In some cases, the bone may not heal properly (nonunion) or heal in a misaligned position (malunion), requiring further treatment. - Nerve Damage
Rarely, the trauma from the fracture or surgery can affect nearby nerves, leading to sensory changes or weakness in the arm.
Dr. Kau Chung Yuan
MBBS (S’pore)
MRCS (Ireland)
MMed (Ortho)
FRCSEd (Ortho)
Dr Kau (许医生) is a Fellowship trained Orthopaedic Surgeon with a subspecialty interest in Hip and Knee surgery and has been in practice for more than 15 years.
He is experienced in trauma and fracture management, sports injuries, and joint replacement surgery.
- Fellow of the Royal College of Surgeons Edinburgh, Orthopaedics (FRCS, Edin) 2014
- Master of Medicine (Orthopaedics), Singapore (MMed) 2013
- Member of the Royal College of Surgeons Ireland (MRCS, Ire) 2009
- Bachelor of Medicine and Surgery (MBBS, Singapore) 2004
Prevention Tips
While it’s not possible to prevent all cases of radial head fractures, adopting these preventive measures can significantly reduce the risk of injury:
- Wearing Protective Gear: Use appropriate safety equipment during sports and activities that pose a risk to the elbow.
- Improving Home Safety: Implement fall-prevention strategies at home, especially for older adults, such as removing tripping hazards and using non-slip mats.
- Strengthening and Balance Exercises: Engage in exercises that enhance muscle strength and balance, reducing the likelihood of falls.
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Frequently Asked Questions (FAQs)
How long does the pain last after a radial head fracture?
The duration of pain after a radial head fracture can vary widely depending on the fracture’s severity, the treatment method, the individual’s pain tolerance and recovery rate. Typically, pain decreases significantly within the first few weeks with proper treatment, but some discomfort can persist for a few months as the injury heals and rehabilitation progresses.
Can a radial head fracture heal without surgery if it's a Type II or III?
While Type I radial head fractures often heal without surgery, Type II and Type III fractures may require surgical intervention, especially if there is significant displacement or instability of the elbow joint. However, non-surgical treatment options may be considered in some Type II fractures where displacement is minimal and does not significantly affect the joint’s function.
What are the long-term effects of having a radial head replaced?
Long-term outcomes of radial head replacement surgery generally include restored stability and function of the elbow, although some patients may experience limitations in range of motion or strength. The risk of post-surgical complications, such as loosening of the implant or wear over time, may necessitate future interventions.
How can I differentiate radial head fracture symptoms from other elbow injuries?
Radial head fractures are characterised by pain and tenderness in the lateral aspect of the elbow, swelling, and difficulty in forearm rotation and elbow flexion. In contrast, other elbow injuries might present with different patterns of pain, swelling, or limitations in movement. X-rays, CT scans, or MRIs are used for accurate diagnosis and differentiation.