Orthopaedics SA

Knee fractures

Orthopaedic surgeon using a model to demonstrate the function of a knee joint

Specialised treatment for knee fractures

Knee fractures are any type of break in the bones which make up the knee joint. Most are in the kneecap, which accounts for about 1% of all skeletal injuries in all age groups , but knee fractures can also occur in the sections of shin bone and thigh bone which make up the knee joint.

Orthopaedics SA provides a unique, Adelaide-based fracture service for acute fractures and expert management for all types of knee injuries. Request a referral to Orthopaedics SA for specialist knee support.

surgeon in theatre attire with surgical cap

knee fractures frequently asked questions

Pain is the most common and most noticeable symptom of a knee fracture. It will usually develop immediately after the fracture and prevent you from walking or bearing weight on your injured leg. It may be so severe that you feel sick or faint, and may radiate into the thigh or lower leg.

Other symptoms can include:

  • Bruising and swelling
  • Deformity
  • A bony lump that can be seen or felt through the skin
  • Tenderness to the touch
  • Numbness in the foot
  • The foot looking pale or feeling cool to the touch
  • Inability to raise or extend the injured leg

Remember that not all people with knee fractures will experience the same symptoms. You may not exhibit every sign listed above, and may show signs not listed. Always see your doctor for a complete diagnosis and seek referral to Orthopaedics SA for expert treatment.

Most knee fractures result from significant, direct trauma to the knee. This may be caused by a fall from a height, a vehicle accident (particularly patella fractures, when the knee hits the dashboard), or a tackle during sports. Less commonly, knee fractures can result from the leg being twisted beyond its usual range of motion.

Some knee fractures are caused by repeated stress, particularly in people who participate in endurance sports or have bone-weakening conditions such as osteoporosis or knee arthritis. People with these medical conditions may experience fractures from low-impact trauma, such as a fall from standing.

Your risks of developing a knee fracture might be increased by:

  • Incorrect sporting techniques – improper movements can cause your knees to move in ways they are not designed for and may increase your risk of falling during your activity. Seek professional guidance to refine your sporting technique.
  • Using ill-fitting shoes – shoes which so not adequately support your feet can alter your gait and subject your knee to different types of stress. They can also cause blisters, bunions, tendonitis, and other injuries which affect the way you walk.
  • Changed exercise environments – switching to a new space may increase your risk of a stress-related knee fracture. Surfaces with slopes, uneven places, or loose elements may increase your risk of falling.
  • Rapid activity increase – suddenly beginning high levels of a new activity places additional stress on your knees, which may contribute to fracture.
  • Poor diet – ensure your diet includes enough calories and nutrients to support your activity levels and bone health.
  • Obesity – excess body weight adds impact on your legs and knees during activities.

Your doctor will begin diagnosing a knee fracture with a physical examination. This involves checking your knee for deformities, feeling it for abnormalities, and asking you to complete certain movements if you can do so. Your doctor will also ask about your medical history, how the injury occurred, and if you are taking any medications. If you have an acute fracture, this will often be done in the hospital emergency room and after an anaesthetic injection into your knee.

Knee fractures can often be diagnosed through a physical exam alone, though your doctor will usually request additional tests to assess its severity and determine ideal treatment These tests may include:

  • X-ray – these are the most common tests used to visualize the knee bones, and are all that’s needed to diagnose a knee fracture in many cases. However, some studies have shown that they may miss up to 2/3 of all stress-related fractures[1], so they may need to be supplemented with other tests.
  • CT scan – these specialized x-rays show cross-sections of your knee, which can help identify how deep the fracture runs or whether the bone has split into smaller fragments. It may be used to plan for surgery.
  • MRI – combining a large magnet and radio waves, these sensitive imaging tests create very detailed images of the knee. As well as detecting a fracture, they may be used to identify other soft structures that have been damaged.
  • Bone scan – this combines x-rays with an injectable radioactive dye called a tracer, and may be recommended particularly if you have a small or stress-related fracture. The tracer collects in the bone and settles in injured areas, making them appear darker and clearer on an x-ray.
  • Blood flow tests – these check the blood supply to your leg below your knee, assessing whether the fracture has impacted it. They can also detect hemarthrosis (blood pooling in the knee joint).

Your treatment options for a knee fracture depend on your overall health, the severity of your fracture, and the level of activity you want to return to after healing. After fully evaluating your knee fracture, your surgeon will take time to discuss all your available options and help you determine which is best for you.

Knee fractures that are small, not displaced, or caused by stress usually do not need surgery. Instead, your surgeon will recommend treating them by using crutches or a walker to reduce weight on your leg, taking pain-relieving medication, and wearing a brace or cast to immobilise your knee as it heals. This is usually followed by physiotherapy to reduce stiffness and strengthen your knee’s muscles.

As your knee includes strong muscles and ligaments which can easily pull fractured surfaces further apart, displaced knee fractures usually require surgery to repair. Some surgeons at Orthopaedics SA have taken additional training to provide arthroscopic knee surgery, letting them perform many corrections through small incisions in your knee.

Other surgical options for repairing your knee fracture may include:

  • Internal fixation – your surgeon can attach metal rods, pins, and plates to the bones in your knee, which hold the bones together as they heal. They are usually not removed after surgery and remain in your body. If you have detached tendons or ligaments alongside your knee fracture, your surgeon may also use internal fixation to help them reattach to the bone.
  • External fixation – if the soft tissue around your knee is too damaged or weak to support an internal fixator, your surgeon may apply external fixators instead. These poke through your skin and attach to a metal frame outside your leg. External fixation is usually temporary, but sometimes needs to remain in place until the fracture is fully healed.
  • Knee replacement – though less common, your orthopaedic surgeon may recommend a knee replacement if you have an existing bone condition (like arthritis) or if the knee bones are unlikely to heal fully. Learn more about knee replacements at Orthopaedics SA.

Knee treatments

  • Anterior Cruciate Ligament (ACL) Reconstruction

    The anterior cruciate ligament is the most commonly disrupted ligament in the knee. Our understanding of the anterior cruciate ligament and its importance to knee stability has increased greatly over the past 20 years, as has our ability to diagnose

  • Arthroscopic Knee Surgery

    Arthroscopic surgery of the knee is performed using a small telescope (arthroscope) and operating instruments which are inserted through, three punctures (usually) approximately 5 millimetres long. Using this technique, it is possible to remove torn cartilage and other loose pieces

  • Patellofemoral Replacement/​Stabilisation

    Orthopaedics SA’s Adelaide-based orthopaedic clinic is committed to providing high-quality care and treatment for patients with knee joint conditions, including patellofemoral problems. The patella (kneecap) and the femur (thigh bone) meet at the knee joint. When problems arise in this

  • Revision Knee Replacement Surgery

    Revision Knee Replacement means that part or all of your previous knee replacement needs to be revised. Surgery is not a pleasant prospect for anyone, but for some people with arthritis, it could mean the difference between leading a normal

  • Robotic Assisted Knee Surgery

    Robotic surgery utilises computer-assisted planning combined with a robotic arm guided by your surgeon. It is an advancement of a current technology using computer navigation to assist positioning of a joint replacement implant. Used regularly by our surgeons since 2017,

  • Total Knee Replacement Surgery (TKR)

    A total knee replacement is an operation performed on a knee joint damaged by osteoarthritis, rheumatoid arthritis, accidents or sports injuries. It is carried only after other forms of treatment have no further benefit. The knee is commonly referred to

  • Unicompartmental Knee Replacement

    Unicompartmental or partial knee replacement replaces the worn part of the knee whilst retaining the healthy part of the knee. This is not a new concept but there has been resurgence in popularity recently. Better instruments allow for better tissue

Why Orthopaedics SA?

Comprehensive care

From arthritis to sports injuries, we treat a full spectrum of bone and joint conditions to keep you moving.

Expert surgeons

Our highly trained doctors have years of experience delivering precise and effective treatments.

SA’s largest practice

With 23 specialists, we offer unmatched expertise and evidence-based care for every patient.

Multiple locations

We have multiple clinics across South Australia, making it simple to find expert care nearby.

Patient-centric approach

We prioritise understanding your condition to ensure every treatment recommendation feels right for you.

Reliable support

Our team of nurses and administrative staff works behind the scenes to make your experience smooth and stress-free.

We take responsibility for our patient’s experience

From your initial consultation to follow-up care, our team will guide you through every step of your treatment. Your specialist will provide a detailed recovery plan, including physical therapy to restore function and prevent future injuries.

Care

We care for people

Professionalism

We bring our best

Communication

We are open and genuine

Community

We are strongest together

Have questions? We're here to help.