Hip Replacement Surgery: What to Expect at an ASC

Total hip replacement (hip arthroplasty) has followed a similar path to knee replacement — long considered a hospital-only procedure, it's now regularly performed at ambulatory surgery centers for appropriately selected patients, with many going home the same day. The surgery replaces the damaged ball-and-socket joint with an artificial implant, most commonly to treat advanced osteoarthritis or, less often, other joint conditions or prior injury.

Who is a good candidate for the ASC setting

As with knee replacement, candidacy for having the procedure at an ASC rather than a hospital depends more on overall health than age alone. Patients without significant cardiac, pulmonary, or other conditions that raise surgical risk, and who have reliable support at home afterward, are generally reasonable candidates. This determination is made by the surgeon and anesthesiologist based on a full health evaluation, not a simple checklist — it's worth asking directly why a hospital or ASC setting is being recommended for your specific case.

Surgical approach: it affects recovery more than people expect

There are several surgical approaches to hip replacement — posterior, anterior, and lateral being the most common — differentiated by which muscles and tissues are moved aside to access the joint. The anterior approach has become increasingly popular for ASC settings in particular, since it generally involves less muscle disruption and is associated with faster early mobility and fewer activity restrictions in some studies, though outcomes at one year are generally similar across approaches in experienced hands.

Ask which approach your surgeon uses and why. Surgeon experience with a specific approach matters more than which approach is used in the abstract — a surgeon highly experienced with the posterior approach may produce better outcomes than a less experienced anterior approach, despite anterior's general reputation for an easier early recovery.

The day of surgery

The procedure typically takes 1 to 2 hours. Spinal or regional anesthesia combined with sedation is common, for similar reasons as with knee replacement — generally easier recovery from anesthesia and effective early pain control compared to general anesthesia alone, though the specific plan depends on individual factors.

Most patients are helped up and walking with a walker within hours of surgery, which is a standard and deliberate part of modern recovery protocols. Same-day discharge is increasingly common when pain is controlled and the patient can walk and manage stairs (if needed at home) safely with assistance; some facilities plan for a short overnight stay instead. Confirm which applies to your specific procedure and facility ahead of time.

Activity restrictions: this varies more than people expect

Depending on the surgical approach and the surgeon's specific protocol, there may be temporary restrictions on hip positions to avoid — commonly limiting how far the hip is bent, crossing the legs, or rotating the leg inward, to protect the joint while it stabilizes. These restrictions, and how long they last, vary meaningfully by approach and surgeon, so generic advice found online may not match your specific instructions. Get the specific restrictions in writing before you leave the facility.

A raised toilet seat, a shower chair, and removing tripping hazards at home (loose rugs, cords) are commonly recommended preparations to make before surgery, since navigating the home safely in the first couple of weeks matters more than people expect going in.

Weeks 1 to 6: walker to cane to independence

Physical therapy typically starts the day of or day after surgery and continues, often transitioning from home health to outpatient visits, over the following weeks. A walker is standard for the first 1 to 2 weeks for most patients, often transitioning to a cane, with the specific timeline depending on strength, balance, and the surgeon's protocol.

Driving typically resumes once off narcotic pain medication and once strength and reaction time in the operated leg are adequate for safe control of the vehicle — this is a functional milestone confirmed with the surgeon, not a fixed date. Desk work is often possible within 3 to 6 weeks; physically demanding jobs generally take longer.

Months 2 to 6: continued improvement

Most patients see substantial improvement in pain and function well before full recovery, though continued gains in strength and endurance typically continue for 3 to 6 months, sometimes longer. Return to higher-impact activities, if appropriate at all for a hip implant, is a conversation to have with the surgeon rather than assumed based on general recovery milestones — some activities are generally discouraged long-term to protect the implant regardless of how recovered the joint feels.

What to flag rather than assume is normal

Increasing redness, warmth, or drainage at the incision site, a fever, or calf swelling and pain more pronounced in one leg (a possible blood clot sign) warrant an immediate call rather than waiting for a scheduled follow-up. Sudden shortness of breath or chest pain is a medical emergency and requires immediate care. A sudden increase in hip pain accompanied by a popping sensation or inability to bear weight, particularly after a fall, should also be evaluated urgently rather than monitored at home.