A limp at six weeks is almost always expected

For most people leaving their six-week post-operative appointment still walking with a noticeable limp, the instinct is to worry that something has gone wrong. In the majority of cases, that concern is understandable but unfounded. A limp at six weeks after total hip replacement is extremely common — it affects most patients to some degree at this stage, and it is not, on its own, a sign of implant failure or a surgical complication.

Six weeks marks the end of early tissue healing, not the end of functional recovery. Significant improvement in gait typically continues between six weeks and three months, and most patients who are still limping at six weeks are walking without a noticeable limp by six months, provided appropriate rehabilitation is in place. The limp at this point is usually a signal about the state of the muscles around the hip — particularly their strength and coordination — rather than a problem with the joint itself. That distinction matters, because it shapes what needs to happen next: targeted physiotherapy, patience, and understanding why the muscles are still catching up.

The gluteus medius and the hip-drop limp

Running along the outer surface of the pelvis, the gluteus medius — and its smaller companion, the gluteus minimus — are the muscles that keep your pelvis level each time one foot leaves the ground. During normal walking, every single step requires the hip abductors on the stance leg to fire and hold the pelvis horizontal. When they cannot do this reliably, the pelvis drops toward the unsupported side with each stride: the characteristic 'hip-drop' limp. Clinically, this is known as Trendelenburg gait, a term worth knowing because physiotherapists use it routinely when planning the exercises most likely to help.

A 3D motion-capture study of 89 patients found Trendelenburg gait in approximately 27% of THA cases at a mean of 1.3 years post-operatively — well beyond the six-week mark and well beyond the point at which most people expect to have recovered. The pattern is not anecdotal; it is measurable, recognised, and in most cases correctable with the right approach.

Several factors can weaken the abductors after surgery, and they commonly overlap. The hip muscles may have already been underused for months or years before the operation, leaving them deconditioned before the first incision is made. Surgery itself — regardless of approach — causes localised swelling and oedema that temporarily inhibits muscle activation. In direct lateral and anterolateral approaches, the gluteus medius may be partially detached during access to the joint, which deepens and prolongs this early weakness. Superior gluteal nerve irritation during the procedure is a less common but recognised contributor.

One surgical variable worth understanding is femoral offset — the horizontal distance between the centre of the femoral head and the shaft of the femur. If offset is not well restored, gluteus medius tension may be mechanically reduced even once the muscle has fully healed. This is something a surgeon will review at follow-up, and it is a reason why surgical planning and accurate reconstruction matter alongside the recovery process itself.

Why the limp often starts before surgery even happens

Surgery corrects the joint. It does not automatically correct the way the body has learned to move around it.

Many patients arrive at the operating table having limped — in varying degrees — for months or years before the procedure. During that time, the nervous system has been quietly adapting. Protective shifts in weight, shortened strides, and compensatory hip rotation all become encoded as familiar movement. The brain, in effect, learns to treat the altered pattern as normal walking.

After surgery, the mechanical problem that drove those adaptations is gone, but the movement programme written around it remains. The result is that some patients continue to reproduce old compensatory habits even once the new joint is fully capable of supporting symmetrical gait. This is not a failure of willpower or effort — it reflects how the nervous system stores and defaults to practised patterns, especially under mild fatigue or divided attention.

Patients with a longer pre-operative limp history may find this relearning phase takes a little more time, though it is rarely the dominant factor in recovery. What it does mean is that targeted rehabilitation — gait retraining alongside strength work — matters from the earliest possible stage. The sooner new movement patterns are reinforced consistently, the less opportunity old habits have to persist into the months that follow.

How the surgical approach affects where gait recovery starts

Not all hip replacements make the same cuts through the same tissues — and where a surgeon enters the joint shapes where gait recovery begins.

In direct lateral and anterolateral approaches, gaining access to the hip requires partially detaching or splitting the gluteus medius itself. The abductor muscle that Section 2 identified as the engine of pelvic stability must then heal before it can generate full stabilising force. This deepens the early weakness that all patients experience to some degree, and is one reason Trendelenburg gait tends to be more pronounced in the initial weeks following these approaches.

The conventional posterior approach avoids the gluteus medius, which is a meaningful advantage. Instead, it detaches the short external rotator tendons — piriformis, obturator internus, and related structures — to reach the posterior capsule. These tendons are repaired at the end of the procedure, but they require approximately 90 days to heal, leaving a window during which soft-tissue integrity is reduced and restrictive hip precautions are typically imposed.

The SPAIRE technique (Saves Piriformis And Obturator Internus with Repair of Obturator Externus) takes a different path: the posterior short rotator tendons are preserved entirely rather than cut and resutured. Professor Paul Lee, whose published work on SPAIRE and clinical practice inform this section's viewpoint, performs this as his routine approach for suitable patients.

Preserving these tendons carries two biologically distinct benefits for early gait. First, the Golgi tendon organs and muscle spindles embedded within them remain intact, providing continuous proprioceptive feedback to the central nervous system from the moment of mobilisation. Conventional approaches that sever these mechanoreceptors leave the hip neurologically 'blind' until healing and neural regeneration occur — a period that may last weeks. Second, the obturator internus passes directly over the posterior femoral head, creating what is described as a 'strap effect': a dynamic biological tether that resists dislocation and supports confident weight-bearing from the earliest steps.

For suitable patients within this pathway, the practical implication of starting from a smaller soft-tissue deficit may mean a lower degree of pelvic drop during the first days of walking — the Trendelenburg pattern is shallower to begin with, rather than something to work back from over several weeks. Patient selection, baseline muscle strength, and individual anatomy all shape what early recovery looks like, and SPAIRE does not remove the need for structured rehabilitation. But reducing the depth of the initial deficit is where the technique's gait advantage is most plausibly concentrated.

Exercises and daily habits that restore confident walking

Consistent short walks, repeated several times a day, do more to restore gait than occasional longer ones. Frequency reinforces the movement pattern; length, at this stage, mainly adds fatigue. The aim in the early weeks is to accumulate regular, quality repetitions of walking — steadily building both endurance and the muscle memory of symmetrical movement.

Alongside walking, targeted strengthening of the gluteus medius is the central physiotherapy task. Three exercises form the backbone of most programmes:

• Side-lying hip abductions — lifting the operated leg away from the midline while lying on the opposite side, directly loading the abductor without compressive joint stress.
• Clamshells — opening the knees from a side-lying position, activating the outer hip and gluteal chain.
• Glute bridges — pressing through both heels to raise the pelvis, building posterior chain strength and pelvic control.

Exact repetitions and frequency are for a physiotherapist to calibrate to the individual; what matters is consistent practice rather than sporadic effort.

Gait retraining runs alongside strength work. The conscious discipline of heel-to-toe foot strike, keeping the trunk upright rather than leaning over the operated side, and matching stride length on both sides interrupts the compensatory habits discussed in earlier sections. This focus feels effortful at first; with repetition it becomes the default.

The walking stick deserves particular attention. Held in the hand opposite the operated hip, it acts as a mechanical counterbalance during the single-leg stance phase — transferring load through the arm and stick rather than forcing a weakened gluteus medius to stabilise the pelvis unaided. Without it, the pelvis drops with each step, reinforcing the very Trendelenburg pattern that rehabilitation is trying to correct. Dropping the stick before abductor strength is genuinely sufficient is a recognised way to entrench a limp rather than resolve one.

How much structured support is available to guide all of this varies between care settings. Within Professor Lee's Lincolnshire pathway, post-operative physiotherapy is included without a cap on sessions — a structural choice that treats rehabilitation as a designed component of the surgical offering rather than something arranged separately afterwards. The underlying principle applies more broadly: consistent, guided physiotherapy over the weeks that matter most is what separates a limp that resolves from one that persists.

When a persistent limp at six weeks deserves a closer look

Gradual, week-on-week improvement — even if the limp is still visible — is the expected pattern at six weeks, and does not warrant urgent review on its own. Progress is rarely linear, and a bad day between two better ones is not a signal that something structural has changed.

Certain patterns do deserve closer attention. A limp that shows no objective improvement by ten to twelve weeks, pain that is sharp or asymmetric rather than generalised post-operative soreness, a sudden deterioration after an initial period of steady progress, or a sense that the hip feels structurally unstable rather than simply weak — each of these is a reasonable prompt to contact the surgical team rather than wait for the next scheduled appointment.

The long-term data provide important context here. A retrospective study of 152 patients with a mean follow-up of 65 months found persistent severe limping in only 3.6% to 7.6% of patients across three different surgical approaches — and the difference between approaches was not statistically significant. The message from that data is twofold: persistent limp can occur, but it remains genuinely uncommon.

At a follow-up assessment, a surgeon will examine whether femoral offset was accurately restored at the time of surgery, whether gluteus medius strength is recovering on an expected trajectory, and whether superior gluteal nerve function may have been affected during the procedure. These are specific, answerable clinical questions — not a search for catastrophe.

If gait concerns persist, specialist review can determine whether rehabilitation needs adjusting, whether further imaging adds useful information, or whether a longer monitored pathway is the right course. The 3.6–7.6% figure represents patients for whom the work described in this article either did not happen or did not fully take hold — which means attending physiotherapy, using the walking aid for long enough, and seeking review when the pattern warrants it are themselves part of what makes that outcome uncommon.