• October 17, 2026
  • Healthiness
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If you are considering Knee Replacement surgery, you might wonder How long is knee replacement surgery ? Understanding the procedure, its duration can help you think realistically about how to prepare for the surgery, the hospital visits and arranging the physiotherapy sessions and support at your home post surgery.

It is seen in many cases that a knee replacement surgery takes up to approximately 1 to 2 hours long. Nevertheless, a complete hospital experience takes longer because it includes preoperative preparation, giving anesthesia, surgical positioning, postoperative monitoring and physiotherapy management to restore the patient’s movement. Exactly how long is knee replacement surgery taking basically depends on the type of the knee replacement that is involved, the complexity of the whole procedure, age and the patient’s will power and faith.
This will be guiding you basically how long is the knee replacement surgery.

HOW LONG DOES KNEE REPLACEMENT SURGERY TAKES ?

Knee replacement usually takes between an hour or two, however, complex cases like in Total Knee Replacement which involves replacing the entire knee joint takes a little longer duration than the other type which is Partial Knee Replacement.
The procedure mainly consists of replacing damaged joint surfaces with artificial components to improve mobility and to reduce pain that may exaggerate due to complications.
The other type of knee replacement that includes only replacing the affected compartments of the knee is called Partial Knee Replacement. The answer to the question of how long is knee replacement surgery in this type is generally less than the Total Knee Replacement as it replaces only smaller damaged portions.
However, it’s important to keep that in mind, the surgical time which is not the same as the overall time spent in the hospital that comprises preparation, anaesthesia and surgical positioning procedure and also recovery that adds up  further hours to the overall visit to the hospital.

HOW LONG DOES KNEE REPLACEMENT SURGERY LASTS?
According to the types of the knee replacement surgery, the time can be quoted. First is, Total knee replacement surgery that is also known as TOTAL KNEE ARTHROPLASTY (TKA). It is mainly a surgically performed procedure for osteoarthritis (severe) and other substantial joint damages and persistent pain conditions that a person may suffer from. It generally takes up to 1 to 2 hours straight.

During the operation for this type of surgery, the surgeon will remove the damaged cartilage and a small amount of underlying bone from the thighbone and shinbone of the particular leg. Artificial components are then positioned to restore normal functions and joint mobility (Joint mobility can be restored through regular physiotherapy sessions and follow ups). The underside of the kneecap shall be resurfaced according to the patient and after checking the progress (overall).

This procedure includes: Anaesthesia, Surgical Access, Implant Placement after the Removal of damaged surfaces, Alignment assessment (checking of the knee stability,movement and alignment) and wound closure (with a sterile dressing).
Implant positioning and joint functioning is mandatory to be checked appropriately.
Due to any deformity or any previous knee surgery, the operating time will differ.


HOW LONG IS THE KNEE REPLACEMENT SURGERY FROM START TO FINISH ?

It is easier to get to the answer of the question, how long knee replacement surgery takes, by distinguishing between the operating time and complete hospital visit.

The medical multidisplinary team in the hospital reviews the patient’s medical history, checks vital signs, treatment plans and prepares the patient for anesthesia procedure. These activities take time depending on the hospital’s procedure before surgery.

After the surgery completes, the patient gets transferred to the recovery area (ICU or general ward), where the professionals then monitor the vitals once again and also check the effects of anesthesia.
The patient when becomes stable, and alert (GCS STABLE), the team then assess readiness for discharging the patient and for mobilizing the patient out of bed. Some patients who are very stable, discharge from home on the same day while others receive care in the hospital.
Though operation takes only an hour or two but the total hospital visit can take many hours or extends to an overnight stay.

WHAT FACTORS AFFECT KNEE REPLACEMENT SURGERY DURATION ?
There are various factors that influence the knee replacement surgery durations.

Procedure Type: Total knee replacement involves more work and time than Partial Knee Replacement.
Joint Damage Severity: Additional surgical work for example, complex joint changes, substantial deformities and advanced arthritis.

Any Previous Knee Surgery: Altered anatomy or tissue scared from early procedures can make surgery complicated.

Overall Health: Medical conditions may affect montoring, anesthesia planning, and perioperative care.

Surgical Technique: Use of IT, computer assisted or robotic technology, affects teh operating time and preparation but depends on the procedure.
Unexpected Findings: Additional treatment may be necessary if the surgeon encouners any unforeseen issues. Appropriate positioning of implants and patient safety take priority over completing the operations within a specific timeframe.

The surgical team determines the time needed to perform the operation safely and it does not mean that something has gone wrong in any way.

HOW LONG DOES IT TAKE TO RECOVER AFTER KNEE REPLACEMENT SURGERY ?

The journey towards health starts with a necessary patient history taking protocol extending to operation which is just a beginning of a treatment journey and recovery which continues to either weeks, months or years depending on individual’s will power and more.

During the first 24 hours of surgery, many patients are stable enough after the anesthesia effect ends, they begin walking, mobilization out of bed, in bed exercises to reduce the risks associated with prolonged immobility by the help of physiotherapists.

The plan continues. During the first weeks, patients start to work gradually that will improve the knee movement and stability, manage discomfort and help in performing everyday activities without any assistance. Walking aids might be needed but for a short time just to provide safety, balance and strength in the start.

A number of patients make substantial functional progress but swelling, endurance, range of motion, strength and confidence may improve over a time period of several months taking over 6 to 12 weeks approximately.

Physiotherapy is a very important part of recovery as a physiotherapist prescribes and gives assistance in performing exercises to not just improve the range of motion but also to improve balance, strengthen the quadriceps and the surrounding muscles, endurance, balance, and restoring safe walking patterns (gait).

Patients should be following the instructions of the doctors (surgeons and physiotherapists) for a speedy recovery rather than comparing their progress with someone else’s recovery time as it differs with age, will power and damage type.

FREQUENTLY ASKED QUESTIONS 

How long are you in surgery for a knee replacement?

The operation usually takes an hour or two approximately but it might differ due to various procedural steps and positioning.

How long does a knee replacement take from hospital arrival to discharge?

Overall, the visit takes a few hours that may become an overnight stay. It basically depends on the recovery after surgery and when the patient is medically fit, the discharging process starts.

Can knee replacement surgery take longer than two hours?

Yes, it can ! As it depends on the type of knee replacement surgery, significant deformities, any previous surgery or anything that creates hurdles in surgery.

 

 

How long does it take to walk after knee replacement surgery?

Various patients begin walking with assistance as their mobility is affected, on the day of surgery or like within 24 hours, provided their medical condition allows. Timing depends on the recovery and medical team’s guidance and regular follow ups.

How long does a knee replacement last?

It depends on the implant designs, use of technology, individual health, and activity levels, it can last many years, some last 25 years or longer. The artificial knee joint’s lifespan differs from the duration of the operation.

So, how long does knee replacement surgery take ? Approximately 1 to 2 hours but depends on the procedures (positioning, preparation, monitoring, anesthesia procedure and all).

Understanding all the procedures and their duration helps the patient and his/her family too to get prepared for surgery, arranging support and assistance afterwards, managing fee. The most important is the recovery phase of a patient during which early mobility, appropriate pain management and structured physical therapy plan helps the patients to work towards progress for improving function. For knee replacement surgery, it is also recommended to consult an orthopedic surgeon to understand the expected operating time, hospital stay after clinical checkups and rehabilitation plan for your individual circumstances.

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