What the first six weeks actually look like

Six weeks is the phrase most patients hear before hip replacement surgery, and it tends to generate equal parts relief and anxiety. Relief, because there is a clear horizon. Anxiety, because six weeks can sound like an enforced pause in normal life. In practice, the first six weeks after hip replacement are neither passive nor punishing — they are a structured, progressive phase in which movement is the medicine.

For most patients, mobility begins on the day of surgery or the morning after. The early goal is not distance but consistency: short walks around the house, sitting safely, and managing the stairs with guidance. Over the following weeks, confidence builds as the body adapts to the new joint, and the range of activities gradually widens.

The six-week mark is significant because it is typically when the principal functional restrictions ease and the follow-up appointment with the surgical team takes place — but it is not the finish line. Complete recovery from total hip replacement generally takes between six and twelve months, with most patients returning to their usual activities around weeks ten to twelve.

How quickly that arc unfolds varies. Baseline strength, home support, and the surgical technique all play a role. Whether the key soft tissues around the hip have been preserved during surgery, for instance, can influence how stable and confident movement feels from the very first days — something the rest of this article explores in practical detail.

Sitting safely: the 90-degree rule and why it exists

The 90-degree rule is the single most important restriction to understand in the early weeks. In plain terms, it means the angle between the trunk and the thigh must not close beyond a right angle — roughly the position of sitting bolt upright in a dining chair. Go further forward, and the hip joint enters the combination of deep flexion, adduction, and internal rotation where dislocation risk is highest. These three forces together are the anatomical trigger, not any one of them alone.

After a traditional posterior hip replacement, the short external rotator tendons are cut and reattached during surgery. Until those tendons heal and fibrose — a process that takes approximately 90 days — the back of the joint lacks its natural soft-tissue tether. The 90-degree rule exists to protect that healing window. The stakes are high: once a dislocation occurs, more than half of patients experience a repeat event, and a significant proportion require revision surgery within two years.

In practical terms, the restriction translates directly into furniture choices. Use a firm chair with a high seat — one that keeps the knees at or below hip level when seated. Avoid low sofas, recliners, zero-gravity chairs, and standard toilet seats without a raised adaptor. Do not sleep in a recliner; the hip stiffens overnight in a flexed position.

The technique for sitting down matters as much as the chair itself. Back up until the chair edge touches the back of the legs. Slide the operated leg forward so the foot is in front of the knee. Place both hands on the armrests and lower slowly — do not lean forward to reach the seat. To stand: keep the operated leg extended in front, push directly up through both armrests, and let the non-operated leg take most of the initial weight. Never rock forward to build momentum before rising.

Sitting sessions themselves should be limited to around 45–60 minutes at a time, followed by a short walk to reduce stiffness and swelling.

It is worth noting that sitting restrictions are not identical across all surgical approaches. The degree to which precautions apply, and how long they remain in force, depends on what was done to the soft tissues during surgery — an important distinction covered in the section that follows.

Stairs: good leg up, bad leg down

'Good up, bad down' — three words worth memorising before leaving hospital. When ascending stairs, the non-operated leg steps up first, followed by the operated leg and walking aid to the same step. When descending, the walking aid goes down to the lower step first, then the operated leg leads, and the non-operated leg follows. The operated side and the walking aid always move together, whether going up or coming down.

In the first few weeks, the approach is one step at a time: both feet meet on each step before the next one is attempted. A handrail on whichever side is available is essential early on — if it falls on the operated side, it can stand in for the walking aid on that step.

Progression is gradual but consistent for most patients. By weeks six to eight, a near-alternating stepping pattern becomes achievable, and the handrail shifts from essential to reassuring. By three months, stair climbing feels essentially normal for the majority of people, provided the weeks between have included daily walking and the exercises prescribed at discharge.

The pace of that progression connects directly to what happened in theatre. The muscles that power stair ascent — principally the piriformis and obturator internus — are precisely those that the SPAIRE technique leaves intact. Because they have not been cut and reattached, they are functioning from day one rather than waiting to heal. That does not guarantee a faster timeline, but it does mean the mechanics for climbing stairs are working in the patient's favour from the outset.

Daily movement habits that protect the joint

Walking is the anchor habit around which everything else in early recovery is built. From the first day home, the goal is to walk every day — initially short circuits of the house, then gradually extending to outdoor distances as comfort allows. The physiotherapist guides the pace of increase, but the direction is always forward: a little more each day, turning by taking small steps rather than pivoting on the operated leg.

Three specific movements warrant the same caution throughout the first six weeks: crossing the legs, twisting or pivoting on the operated leg, and reaching down towards the feet or ankles. Their common thread is the same logic as the sitting restrictions already covered — they guard against positions and rotations that place the new joint under stress while soft tissues are consolidating. Worth naming here because they arise in ordinary moments: pulling on socks, turning in a hallway, shifting position in a chair, rather than in structured exercise.

Desk work typically becomes feasible around weeks four to six, provided the commute does not involve prolonged walking or awkward seating and the chair meets the height requirements already in place.

Driving is a separate milestone and not one patients can self-assess. NHS guidance specifies a minimum of six weeks before returning to the wheel, and clearance comes from the surgeon at follow-up — taking into account which leg was operated on, the procedure performed, and whether emergency braking would be reliably safe. Raising the question at the six-to-twelve-week consultation is the right moment.

How SPAIRE's muscle preservation changes early confidence

Because the 90-day healing window was covered in the sitting section, the more useful question here is what changes when those tendons are not divided at all.

SPAIRE — which stands for Saves Piriformis And Obturator Internus with Repair of Obturator Externus — preserves the three main posterior rotator tendons intact throughout the procedure. This produces two distinct effects that together support earlier functional confidence.

The first is mechanical. The intact obturator internus passes directly over the back of the femoral head, creating what is described as a 'strap effect': its passive tension and active contraction act as a biological tether resisting posterior dislocation — precisely the direction threatened when sitting low or flexing the hip past 90 degrees. Because the tendon has not been cut and reattached, this stabilising effect is present from day one rather than absent during a healing window.

The second effect is neurological. Intact tendons preserve the Golgi tendon organs and muscle spindles within them. These mechanoreceptors feed continuous position information to the nervous system, allowing the patient to instinctively recognise and guard against extreme ranges of motion. A traditional posterior approach severs these pathways, leaving the joint neurologically without feedback until the tissue regenerates. SPAIRE is designed to maintain that proprioceptive continuity throughout the recovery period.

Professor Paul Lee — Consultant Orthopaedic Surgeon at the Royal London Hospital and 108 Harley Street, who developed the SPAIRE technique during fellowship training at the Exeter Hip Unit — built his biological rapid recovery programme around these two properties. For selected patients within the pathway, the combined mechanical and neurological stability that SPAIRE may provide supports mobilisation from day one, and can underpin same-day or next-day discharge. Individual outcomes still depend on baseline strength, home support, and the specifics of each procedure; the programme is designed to support confident recovery, not to guarantee a uniform result.

Milestone markers and when to ask for a review

The recovery journey has a shape most patients recognise once they are in it — early caution, gradually widening activity, and a point around three months where the operated hip stops feeling like the main event.

Week-by-week reference

Weeks 1–2: Short walks with a walking aid, one-step-at-a-time stairs with a handrail, firm raised chairs only. Wound check with the practice nurse or community team.

Weeks 3–4: Walking distance increases and morning stiffness typically lessens. Desk tasks at home become manageable for most patients.

Weeks 5–6: Most patients have a surgeon review around this point, with driving eligibility assessed individually rather than assumed. Alternating stair steps begin to feel possible for many.

Weeks 6–10: Most day-to-day restrictions lift. Light work and low-impact leisure are realistic for the majority; heavier physical roles take longer.

Three months: Stairs feel close to normal; a handrail may still feel reassuring but is rarely essential.

Signs that warrant early contact

Contact the surgical team promptly for:

• Sudden increase in pain, or pain that was settling but has worsened
• Marked new swelling, warmth, or redness around the wound or joint
• A clunk or sensation that the hip has shifted position
• Fever or wound discharge
• Difficulty bearing weight that was not present the previous day

These are not reasons to panic, but they are reasons to call rather than wait for a scheduled appointment.

Individual timelines — including which restrictions apply and for how long — are confirmed with the treating surgical team based on the procedure performed, baseline fitness, and how recovery is progressing.