The Surgery Itself Takes One to Two Hours

Hip replacement surgery typically lasts between 60 and 120 minutes once you are in the operating room. The exact time depends on whether you are having a traditional open procedure or a minimally invasive approach, how complex your hip damage is, and your surgeon's experience. A straightforward primary hip replacement (your first one on that hip) usually runs closer to 60 to 90 minutes. A revision surgery, where a surgeon replaces an implant that has already been placed, often takes longer because the surgeon must remove the old components first.

The time you spend in the operating room is not the same as the time from when you arrive at the hospital. You will be in the facility for several hours total—typically four to six hours—because of preparation, anesthesia, and recovery time in the post-operative area.

Key Takeaways

  • The actual surgery lasts 60 to 120 minutes, but you will be at the hospital for four to six hours total because of preparation and recovery time.
  • Minimally invasive techniques may take slightly longer in the operating room but can reduce overall recovery time after surgery.
  • Your total time in the operating room depends on whether this is your first hip replacement or a revision of an earlier implant.
  • You will spend one to two hours in the recovery room after surgery before moving to a hospital room or going home.

What Happens Before the Surgery Starts

You will arrive at the hospital one to two hours before your scheduled surgery time. During this period, nursing staff will check your vital signs, review your medical history, and have you change into a hospital gown. An anesthesiologist will meet with you to discuss the type of anesthesia you will receive—usually general anesthesia or spinal anesthesia—and answer any last-minute questions.

You may also receive a nerve block injection, which numbs the area around your hip and reduces pain after surgery. This injection happens before you go to the operating room and can add 15 to 30 minutes to your pre-operative time. Once all preparations are complete, you will be moved to the operating room, where the surgical team will position you, place monitoring equipment, and begin anesthesia.

The Operating Room Timeline

Once anesthesia takes effect, the surgeon makes an incision to access your hip joint. In a traditional open procedure, this incision is typically four to six inches long. In a minimally invasive approach, the surgeon uses one or two smaller incisions, sometimes two to three inches each. The smaller incisions may actually take slightly longer to work through, but they cause less muscle damage.

The surgeon then removes the damaged bone and cartilage, prepares the hip socket and thighbone, and inserts the new implant components. The implant is secured either with cement (which hardens like bone) or with a press-fit design that relies on bone to grow into it. The surgeon tests the new joint's range of motion, closes the incision with stitches or staples, and applies a sterile dressing. This entire process takes the majority of your 60 to 120 minutes in the operating room.

Recovery Room Time After Surgery

After surgery ends, you move to the post-operative recovery room, where you will spend one to two hours waking up from anesthesia. During this time, nurses monitor your heart rate, blood pressure, oxygen level, and pain. You may feel groggy, cold, or nauseous as the anesthesia wears off—these are normal reactions. A nurse will help you manage pain with medication and may explore ice to reduce swelling.

Once you are alert and your vital signs are stable, you will be moved to a hospital room if you are staying overnight, or prepared for discharge if your surgery center performs same-day procedures. Most people stay in the hospital for one to three days after hip replacement, though some facilities now offer outpatient hip replacement where you go home the same day.

Factors That Change Surgery Duration

Several things can make your surgery take longer than the typical 60 to 120 minutes. If you have severe arthritis, bone loss, or previous hip surgery, the surgeon may need extra time to prepare the joint properly. Obesity, very high or very low bone density, and certain medical conditions can also extend operating time. Your surgeon will discuss these factors during your pre-operative visit.

Unexpected findings during surgery—such as more bone damage than imaging showed—can add time as well. This is why surgeons cannot always predict the exact duration before they begin. If your surgery takes longer than expected, the surgical team will contact your family in the waiting room to let them know.

What to Expect for Total Hospital Time

Plan to be at the hospital or surgery center for four to six hours on the day of your procedure. This includes one to two hours of pre-operative preparation, one to two hours in the operating room, and one to two hours in recovery. If you are having general anesthesia, you will not be able to drive yourself home, so arrange for someone to pick you up. Even if you feel alert, the anesthesia can impair your judgment and reaction time for the rest of the day.

If you are staying overnight, you will move from recovery to a hospital room where you will begin physical therapy and pain management. Most patients go home within one to three days, though the exact length of stay depends on your age, overall health, and how well you are recovering.

Minimally Invasive vs. Open Surgery Timing

Minimally invasive hip replacement uses smaller incisions and specialized instruments, which can mean slightly longer time in the operating room—sometimes 90 to 120 minutes instead of 60 to 90 minutes. However, the smaller incisions cause less damage to muscle and soft tissue, which often means less pain after surgery and faster early recovery. You may be able to walk with information sooner and return to normal activities more quickly, even though the actual surgery took a few minutes longer.

Not all surgeons perform minimally invasive hip replacement, and not all patients are candidates for it. Your surgeon will discuss which approach is best for your situation during your pre-operative consultation.

Frequently Asked Questions

Can hip replacement surgery be done in less than an hour?

Yes, experienced surgeons sometimes complete straightforward primary hip replacements in 45 to 60 minutes. However, 60 to 90 minutes is more typical. Faster surgery is not necessarily better—the surgeon's priority is placing the implant correctly, not rushing through the procedure.

Why does revision hip surgery take longer?

Revision surgery requires the surgeon to remove the old implant first, which takes additional time and care to avoid damaging the bone. The bone may also have changed since the first surgery, requiring more preparation. Revision procedures typically take 90 to 150 minutes.

Will I be asleep the whole time?

Yes, you will be unconscious during the entire surgery if you receive general anesthesia. If you receive spinal anesthesia, you will be sedated and will not remember the procedure, though you may be partially aware. Your anesthesiologist will discuss which type is right for you.

What if my surgery takes much longer than expected?

Your surgical team will update your family if the procedure takes significantly longer than planned. This can happen if the surgeon finds unexpected bone damage or complications. Longer surgery does not automatically mean a worse outcome—sometimes extra time ensures the implant is placed correctly.

How soon after surgery can I go home?

If you have same-day surgery, you may go home four to six hours after arriving at the facility. If you stay overnight, you will typically leave within one to three days. Your surgeon and medical team will determine when you are ready based on your pain level, ability to walk with information, and overall recovery.