Patella Stabilisation
Patella stabilisation surgery to improve kneecap stability and reduce recurrent dislocation
Patella stabilisation surgery is a procedure used to treat kneecap (patella) instability, particularly in people who experience recurrent dislocation or ongoing episodes of the kneecap slipping out of position.
The procedure may involve repairing or reconstructing supporting ligaments, adjusting soft tissue balance, or addressing underlying alignment issues contributing to instability. The exact surgical approach depends on the cause of the instability, associated injuries, and individual anatomy.
The aim of surgery is to help improve kneecap stability, knee function, and confidence in movement, while reducing the risk of further dislocation episodes, although outcomes can vary between individuals.
- What is patella stabilisation surgery?
- When patella stabilisation surgery may be recommended
- Preparing for patella stabilisation surgery
- What happens during the patella stabilisation surgical procedure?
- Understanding the risks and considerations
- What to expect after surgery
- Rehabilitation and recovery after surgery
- Long-term outcomes after patella stabilisation surgery
What is patella stabilisation surgery?
Patella stabilisation surgery is a procedure used to treat instability of the kneecap (patella), particularly when the kneecap repeatedly slips out of position or dislocates. The patella is designed to move within a groove at the front of the knee during bending and straightening. When the structures that help stabilise the kneecap are damaged or not functioning effectively, the patella can move abnormally, leading to pain, instability, swelling, or recurrent dislocation.
Patella stabilisation surgery aims to improve the stability and tracking of the kneecap. Depending on the underlying cause, the procedure may involve:
- Repairing or reconstructing supporting ligaments, such as the medial patellofemoral ligament (MPFL)
- Adjusting soft tissue balance around the knee
- Addressing underlying alignment or anatomical factors contributing to instability
The exact procedure is tailored to your individual anatomy, injury pattern, and degree of instability.
When patella stabilisation surgery may be recommended
Patella stabilisation surgery may be considered when kneecap instability is causing ongoing symptoms or recurrent dislocation episodes, particularly when non-surgical treatment has not provided sufficient improvement. Not all patella dislocations require surgery. Some first-time dislocations may be managed with physiotherapy, bracing, and rehabilitation, depending on the severity of the injury and stability of the knee.
Surgery may be discussed when:
- You experience recurrent patella dislocations or episodes of the kneecap slipping out of place
- The knee feels unstable or difficult to trust during activity
- There is ongoing pain, swelling, or apprehension with movement
- Imaging shows injury to the supporting ligaments or underlying alignment issues
- Symptoms are affecting daily activities, sport, or quality of life
Patella stabilisation procedures may also be considered when there are anatomical factors contributing to instability, such as:
- Abnormal patella tracking
- Shallow groove anatomy
- Limb alignment issues
- Ligament insufficiency
The decision to proceed with surgery depends on factors such as your symptoms, instability pattern, activity level, imaging findings, and overall knee condition.
Preparing for patella stabilisation surgery
Preparing for patella stabilisation surgery involves clinical assessment, surgical planning, and physical preparation to support a safe procedure and recovery. Before surgery, Dr Scott Tulloch will perform a comprehensive evaluation of your knee, which may include:
- A detailed clinical examination
- Imaging, such as X-rays and MRI, to assess the patella, supporting ligaments, cartilage, and overall alignment of the knee
- In some cases, additional imaging to evaluate underlying anatomical factors contributing to instability
This assessment helps determine the most appropriate surgical approach based on your individual anatomy and pattern of instability.
You will also receive pre-operative instructions, which may include guidance on:
- Fasting prior to surgery
- Managing or temporarily stopping certain medications
- Preparing for your hospital admission
- Organising crutches or a knee brace for use after surgery
Prehabilitation (pre-surgery physiotherapy) may be recommended to help optimise your knee before surgery. This can include:
- Improving range of motion
- Strengthening the quadriceps and surrounding hip muscles
- Reducing swelling and inflammation
Optimising your general health before surgery may also support recovery. This can include maintaining a healthy weight, stopping smoking, and managing any underlying medical conditions. It is also helpful to prepare your home environment for your return after surgery, particularly if you expect temporary mobility or weight-bearing restrictions during the early stages of recovery.
What happens during the patella stabilisation surgical procedure?
Patella stabilisation surgery is typically carried out under general anaesthesia or regional anaesthesia (such as a spinal anaesthetic), so you will be comfortable throughout.
The exact surgical technique depends on the cause of the instability, your anatomy, and the structures involved.
During the operation:
- The knee is carefully assessed to identify the factors contributing to patella instability
- Arthroscopic (keyhole) techniques may be used to evaluate the inside of the joint and assess any associated cartilage or meniscal damage
- Damaged or stretched supporting structures may be repaired or reconstructed, commonly including the medial patellofemoral ligament (MPFL)
- In some cases, additional procedures may be performed to address alignment or tracking issues, depending on the underlying anatomy
A graft may be used during ligament reconstruction, which can be taken from your own tendon or, in some cases, from a donor source. Once the stabilising structures have been addressed, the kneecap is assessed for tracking, stability, and range of motion. The incisions are then closed and dressed, and you will be transferred to recovery for monitoring.
Duration
The procedure typically takes 1–2 hours, although this can vary depending on the complexity of the surgery and whether additional procedures are required.
Understanding the risks and considerations
All surgical procedures carry potential risks, and patella stabilisation surgery is no exception. Understanding these risks and considerations can help you make an informed decision about your care.
General risks associated with surgery may include:
- Infection
- Bleeding
- Blood clots (deep vein thrombosis or pulmonary embolism)
- Reactions to anaesthesia
There are also considerations specific to patella stabilisation surgery. These may include:
- Persistent knee pain or swelling
- Stiffness or reduced range of motion
- Ongoing feelings of instability or apprehension in the knee
- Recurrent patella dislocation or subluxation despite surgery
- Changes in kneecap tracking or alignment
- Graft stretching or failure, where ligament reconstruction is performed
- Nerve irritation or numbness around the surgical site, which is often temporary.
In some cases, additional procedures or further treatment may be required if symptoms persist or instability recurs.
What to expect after surgery
Recovery after patella stabilisation surgery is typically structured and progressive, with a focus on protecting the healing tissues while restoring movement, strength, and knee stability.
Hospital stay
Patella stabilisation surgery is commonly performed as a day procedure or may involve an overnight hospital stay, depending on the complexity of the surgery and your individual recovery.
Pain management
It is common to experience pain, swelling, and stiffness in the early stages after surgery. These symptoms are managed with:
- Medications prescribed by your care team
- Cold therapy (ice) to reduce swelling
- Elevation of the leg to support circulation
Assistive devices and mobility
You will usually begin mobilising with guidance from a physiotherapist soon after surgery.
Crutches are commonly required during the early recovery period, and a knee brace may be used to help protect the surgical reconstruction and support the knee during healing.
Discharge instructions
Before leaving hospital, you will receive guidance on:
- Wound care and dressing management
- Managing pain and swelling
- Weight-bearing and movement restrictions
- Use of crutches or bracing, if required
- Recognising signs of complications
Activity levels are usually progressed gradually to protect the repaired or reconstructed structures during healing.
Recovery timelines can vary depending on the type of procedure performed, associated injuries, and individual response to rehabilitation.
Rehabilitation and recovery after surgery
Rehabilitation following patella stabilisation surgery is a structured and progressive process focused on protecting the healing structures while restoring movement, strength, and knee stability.
Early phase (first few weeks)
The initial focus is on:
- Managing pain and swelling
- Protecting the repair or reconstruction during healing
- Restoring gentle range of motion
- Activating the quadriceps muscles
- Beginning walking with crutches, often with the support of a knee brace
A structured physiotherapy program usually begins soon after surgery, with exercises tailored to your procedure and recovery progress.
Intermediate phase (weeks to months)
As healing progresses, rehabilitation focuses on:
- Improving range of motion
- Rebuilding muscle strength, particularly in the quadriceps and surrounding hip muscles
- Improving balance and movement control
- Gradually increasing walking and activity levels
Exercises are progressed based on your symptoms, knee stability, and healing.
Later phase (return to activity)
Recovery continues with:
- Advanced strength and conditioning exercises
- Functional training aimed at improving kneecap control and movement mechanics
- Gradual return to sport or higher-demand activity, where appropriate
Recovery timeline
Recovery after patella stabilisation surgery typically occurs over several months, although timelines can vary depending on the type of procedure performed, severity of instability, and adherence to rehabilitation.
Following your rehabilitation program carefully is important, as returning to activity too early may place stress on the healing structures.
Long-term outcomes after patella stabilisation surgery
Patella stabilisation surgery may help reduce the risk of recurrent kneecap dislocation, improve knee stability, and support overall knee function for many patients.
Long-term outcomes can vary depending on factors such as:
- The severity of the instability
- Underlying anatomy and alignment
- Associated cartilage or ligament damage
- Adherence to rehabilitation and physiotherapy
- Overall health and activity level
Many patients experience improved confidence with walking, exercise, and daily movement following recovery and rehabilitation.
By improving kneecap stability, the procedure may also help reduce ongoing stress and damage to the cartilage surfaces associated with repeated dislocation episodes. It is important to understand that some patients may continue to experience symptoms such as pain, stiffness, or occasional instability, and outcomes can vary between individuals. Maintaining an active and healthy lifestyle, including strengthening exercises and low-impact activity, may help support ongoing knee health and long-term function.
If you would like to learn more about patella stabilisation surgery or discuss whether this procedure may be appropriate for your condition, Dr Scott Tulloch can provide an individualised assessment and treatment advice based on your symptoms, knee stability, and activity goals.