Walk-in Emergency Clinic

Emergency Clinic




Work Cover

Infusion Clinic

Fracture Clinic

Get Directions
Call us
Book Now

Patellar Fractures & Dislocations

"Twist, shout, fall, ouch!" That's how James, one of our patients at Urgent Care Brisbane, described his unfortunate encounter with a slippery surface. A casual jog in the park had turned into a distressing ordeal due to an unexpected patellar fracture and dislocation. This comprehensive guide serves to shed light on such situations, just like what James experienced, and how to handle them effectively.



The knee joint, specifically the patella or kneecap, is the protagonist in our story. The patella, a small, rounded triangular bone, is nestled in front of the knee. It’s the largest sesamoid bone in the body and acts as a shield for the knee joint. It’s an integral part of the extensor mechanism of the knee, along with the quadriceps muscle, quadriceps tendon, and patellar tendon.

Mechanism of Injury

James slipped, his foot twisted in a direction it shouldn’t have, and he was met with a sharp pain in his knee. This sudden, unnatural motion is a common cause of patellar fractures and dislocations. When the forceful twist is combined with the contraction of the quadriceps muscle, it can result in a fractured or dislocated patella.

Types of Patellar Fractures

Patellar fractures are characterized by the manner in which the bone breaks. Here are the main types:

  1. Non-displaced Fracture: This is a simple break where the bone cracks but doesn’t move apart. All pieces remain aligned in their normal position.
  2. Transverse Fracture: This is a fracture that travels across the patella, dividing it into two main pieces. This is the type of fracture James experienced.
  3. Comminuted Fracture: This is a more severe fracture where the bone shatters into three or more pieces.
  4. Open Fracture: This is a grave situation where the broken bone punctures through the skin. It’s more prone to infection and requires immediate medical attention.

Types of Patellar Dislocations

Patellar dislocations happen when the patella moves out of its normal position in the knee joint. Here are the main types:

  1. Partial Dislocation (Subluxation): The patella partially moves out of its groove but doesn’t fully dislocate.
  2. Complete Dislocation: The patella fully moves out of its groove. It’s usually visible and often causes severe pain.
  3. Medial Dislocation: This is a rare occurrence where the patella dislocates towards the inside of the knee.
  4. Lateral Dislocation: This is the most common type of dislocation where the patella dislocates towards the outside of the knee. This is the type of dislocation James suffered.

Understanding these classifications can help healthcare professionals determine the best treatment options and can help you better understand the nature of your injury.


Recognizing the Symptoms and Signs

When James hobbled into Urgent Care Brisbane, his pained expression was a clear sign something was seriously wrong. His knee was visibly out of shape and he could hardly put weight on it – a telltale sign of a significant knee injury, such as a patellar fracture or dislocation.

Here’s what you might typically expect if you suffer a similar injury:

  1. Intense Pain: Just like James, you would feel sharp, intense pain in the knee area. The pain might increase when you try to move your knee or put weight on it.
  2. Swelling: The knee area would quickly swell due to internal bleeding from the fractured bone or torn ligaments.
  3. Visible Deformity: In case of a dislocation, the knee might look visibly out of shape, as the patella has moved out of its normal position.
  4. Inability to Straighten the Knee: You might not be able to straighten your knee or extend your leg fully due to the pain and instability.
  5. Difficulty Bearing Weight: It could be challenging to put weight on the affected leg or walk without support.
  6. Potential Loose Body in the Knee Joint: In cases of a comminuted fracture, a piece of the fractured patella might break free and become a loose body within the knee joint, causing additional discomfort and instability.

These symptoms should never be ignored. Like James, you should seek immediate medical help if you suspect a patellar fracture or dislocation.

Examination and X-ray

Our medical team performed a physical examination on James, confirming the potential of a patella fracture and its dislocation. To get a clear picture of his injury, an X-ray was carried out using our on-site radiology services. This imaging is crucial for accurately diagnosing the type and extent of the patellar injury.


Management and Complications

Once diagnosed, the treatment approach for patellar fractures and dislocations is tailored to the specific injury. Non-displaced fractures, like what James had, can often be managed conservatively with immobilization using a cast or a hinged knee brace. However, in more severe cases involving displacement or disruption of the knee’s extensor mechanism, surgical intervention may be necessary. For patellar dislocations, treatment often involves closed reduction, where the kneecap is gently guided back into its normal position.

After initial treatment, rehabilitation is key for regaining the knee’s range of motion and strengthening the surrounding muscles. A progressive physiotherapy program, along with regular follow-ups, plays a vital role in this recovery process.

However, complications can occur. These may include persistent knee pain, recurrent dislocations, post-traumatic arthritis, and in some cases, a condition known as patellar instability.

Next Steps

The Urgent Care Brisbane Approach

At Urgent Care Brisbane, we’re equipped to handle patellar fractures and dislocations effectively, just as we did for James. Our first step is always an accurate diagnosis, using on-site radiology for immediate imaging. This enables us to swiftly ascertain the extent of the injury.

Next comes management. We’re capable of performing a closed reduction for dislocations right here, without the need for hospital admission. For fractures, we can apply synthetic casting or provide a hinged knee brace to immobilize the knee joint and aid in the healing process.

We also provide essential follow-up care. Our team ensures the recovery process is going smoothly and that complications are addressed promptly. We offer crutches and moon boots for those needing assistance with mobility during recovery.

Remember, a patellar fracture or dislocation, while painful and inconvenient, is treatable. And at Urgent Care Brisbane, we’re here to guide you every step of the way, just like we did for James, who is now back to his regular jogs in the park, albeit with a bit more caution on those slippery surfaces.

So, whether you’re experiencing symptoms of a patellar injury or any other orthopedic issue, trust that you’re in capable hands at Urgent Care Brisbane. We’re here to ensure you recover well, without the stress of a hospital emergency visit. Stay safe, and remember, we’re here when you need us.

This article aims to inform and guide those facing patellar fractures and dislocations. However, it’s not a substitute for professional medical advice. Always consult with a healthcare provider for accurate information.

Have further questions?
Send us a message.
See Us Now
Find us easily in Brisbane's inner west
Fill out a patient registration form before you arrive
Can't See Us Now?
Book an appointment that fits your busy schedule.
Can't make it in person? Book a teleconsultation.