Patella Fracture

Patellar fractures are knee injuries that can significantly impact mobility, strength, and everyday activities. Whether caused by a fall, sports injury, or direct trauma, a kneecap fracture can range from a minor crack to a complex break requiring surgical care.

At Orthopedic Specialists & Sports Medicine, our experienced team provides comprehensive care for patellar fractures and other knee injuries. With convenient locations in Granville and Coshocton, OH, we offer personalized treatment plans designed to help you recover safely and regain mobility. Contact our team today to schedule an evaluation.

Topic at a Glance

  • A patella fracture is a break in the kneecap that can affect your ability to straighten your leg, bear weight, and perform everyday activities.
  • Patellar fractures vary in severity and type, including stable, displaced, simple, comminuted, open, closed, and transverse fractures.
  • Common symptoms include knee pain, swelling, bruising, and difficulty walking, often following a fall, sports injury, or direct blow to the knee.
  • Treatment depends on the fracture type, with options ranging from bracing and physical therapy to surgical fixation.

What is a Patellar Fracture?

A fracture of the patella is a break in the kneecap (patella). The patella plays an important role in protecting the knee joint. It also provides an anchor point for the muscles on the front of the thigh, connecting them to the lower leg (tibia). These connections allow the leg to straighten. Even a small bone injury to the patella can disrupt your ability to bear weight or extend your leg.

An athlete in pain from a patella fracture during a soccer game in Ohio.

Types and Classification of Patella Fractures

Patella fractures are classified based on fracture pattern, displacement, number of fragments, stability, and soft tissue involvement. Common types include:

  • Stable Fracture – The bone cracks but remains properly aligned. Patients may still be able to straighten the knee and, in some cases, walk with minimal difficulty.
  • Displaced Fracture – The broken bone pieces move out of alignment. This type often affects knee function and typically requires surgical treatment to restore proper positioning.
  • Simple Fracture – The patella breaks into two main pieces. Treatment depends on whether the fragments remain aligned.
  • Comminuted Fracture – The patella breaks into three or more pieces. These fractures are usually caused by high-impact injuries and may require surgery depending on severity.
  • Open (Compound) Fracture – The broken bone fragments stick out through the skin, creating an open wound. This is a serious injury with a higher risk of infection and usually requires immediate surgical intervention.
  • Closed Fracture – The bone breaks, but the skin remains intact. These fractures are generally less complicated than open fractures but still require proper medical evaluation and treatment.
  • Transverse Fracture – The break occurs horizontally across the patella. This is one of the most common types and often affects the ability to straighten the knee, sometimes requiring surgical repair.

How Serious is a Patellar Fracture?

The severity of a patella fracture depends on the type of fracture involved. A simple patellar fracture typically involves minimal displacement and does not affect the smooth joint surface, making recovery more straightforward. However, displaced fractures can affect the articular cartilage, leading to potential problems such as knee stiffness or arthritis.

When the patella fractures into multiple pieces, the fractures can enter the joint space, making the injury more complex. Open fractures carry a higher risk because the broken bone pierces through the skin, potentially damaging other soft tissues. This type of injury also significantly increases the risk of infection.

What Causes a Kneecap Fracture?

Most patellar fractures are due to direct trauma, such as a fall onto the front of the knee or a blow during contact sports. It is also possible for the patella to be fractured indirectly, with a sudden contraction of the quadriceps muscle, causing the patellar tendon to pull sharply on the kneecap and break it.

What Are the Symptoms of a Patellar Fracture?

Common signs of a patellar fracture include the following:

  • Painful swelling and bruising
  • You will unlikely be able to perform a straight leg raise
  • Inability to bear weight or walk

How is a Patellar Fracture Diagnosed?

Orthopedic surgeons evaluate the injury using:

  1. Physical examination: An assessment of the swelling, palpation for broken pieces, and determining if the kneecap moves abnormally.
  2. X-rays: These can help identify whether it’s a transverse fracture, comminuted fracture, or displaced fracture, and to see if the remaining patellar bone is stable.
  3. MRI/CT scan: If the joint space is affected or articular cartilage is damaged, an MRI or CT scan can assess surrounding soft tissues, the patellar tendon, and joint integrity.

How is a Patellar Fracture Treated?

Treating fractures of the patella depends on the type of fracture.

Non-Surgical Treatment

For a stable fracture where bone ends are closely aligned, a knee brace or cast may be used to keep the knee straight. This lets the fracture heal while the leg muscles and thigh muscles rest. During this time, gentle physical therapy can begin to strengthen supporting muscles.

Surgical Treatment

When more complicated fractures occur, especially those involving a displaced fracture with fragments, surgical treatment may be needed. The surgical procedure involves the following:

  • Tension band wiring to hold the pieces of bone in place
  • Screws and plates to fixate the kneecap
  • Removal of bone fragments that disrupt the joint surface
  • Possible reattachment of the loose patellar tendon if the original attachment point cannot be fixed
  • Repair of an open fracture, where both the wound and bone are exposed.
 

Orthopedic surgeons aim to restore the normally smooth joint surface and preserve the articular cartilage.

Recovery

Recovery from patellar fractures can take several months. After initial immobilization, you’ll work on:

  1. Regaining range of motion in the knee joint as the bone heals
  2. Rebuilding strength in the leg muscles and hip stabilizers
  3. Slowly progressing to bear weight as your injury heals
  4. Restoring function. Achieving a straight leg raise is often a key milestone
 

Your care plan will be tailored depending on your fracture type.

Regain Strength & Mobility with Expert Care

If you or a loved one in Granville or Coshocton suspects a patella fracture, don’t delay. Our skilled orthopedic surgeons at Orthopedic Specialists & Sports Medicine are here to evaluate and treat everything from stable fractures to those needing surgical repair. Whether it’s a displaced fracture, comminuted fracture, or transverse fracture, we focus on restoring your knee joint function so you can return to normal life pain-free.

Contact us today to schedule an evaluation or learn more about our knee fracture care. Your recovery starts with a conversation—and we’re ready when you are.

Medically reviewed by Alex Tancevski, MD

FAQs About Fractured Patellas

How do I know if I fractured my patella?

Common signs of a patella fracture include sudden knee pain, swelling, bruising, difficulty straightening your leg, and trouble bearing weight. If you experience these symptoms after an injury, you should seek medical evaluation.

No. Stable fractures with minimal displacement may be treated with a brace or cast. More complex injuries, such as displaced or comminuted fractures, often require surgical treatment to restore knee function.

Recovery time varies depending on the severity of the fracture. Most patients begin healing within 6–12 weeks, but full recovery may take several months.

Patella fractures commonly occur from direct trauma, such as falls, sports injuries, or motor vehicle accidents. They can also result from sudden, forceful contraction of the thigh muscles.

In most cases, yes. Physical therapy helps restore range of motion, rebuild muscle strength, and safely return you to normal activities.