The 90-degree rule is simple to say and easy to break by accident. It means the angle between your mom's thigh and her torso should never close past a right angle. When a seat is too low or too soft, her body sinks, her knees rise above her hips, and the hip joint folds past 90 degrees — the position most likely to let a new hip slip out of place while the tissue around it is still healing.

You may read that the rule no longer applies to every surgery. Some minimally invasive anterior approaches relax the restriction, and a few surgeons say recliners are fine. That does not change your job. Her surgeon prescribed the 90-degree precaution for her, so treat it as the standard until her care team lifts it in writing. According to the U.S. National Library of Medicine's patient guidance at MedlinePlus, following your own surgeon's specific movement instructions is the priority during recovery.

Most standard chairs sit about 18 inches off the floor — too low for hip precautions. For recovery, the seat needs to keep her hips level with or slightly higher than her knees when she is all the way back. The clean way to find her number: measure from the floor to the crease behind her knee while she stands, then choose a seat at or above that height. A firm cushion can fine-tune the last inch.

Firmness matters as much as height. A tall seat that lets her pelvis drop two inches into soft foam puts her right back below the 90-degree line. Look for a firm, supportive cushion that holds her pelvis up. This is also where a lift chair earns its keep: the powered lift raises the whole seat to bring her toward standing, so she never has to rock forward or push up from a low, folded position. Browse Edward Creation's lift chairs and check each model's listed seat height against her measurement before you decide.

The Orthopaedic guidance echoed across hospital recovery programs is consistent: keep knees lower than hips, avoid low chairs, and use elevated, firm seating. The CDC's fall-prevention resources add that stable, easy-to-rise-from seating also lowers fall risk during the weeks she is least steady on her feet.

Beyond height and firmness, a handful of features separate a truly hip-safe chair from one that only looks the part. Use this as your shopping checklist:

Powered lift function. A dual-motor power lift raises her toward standing so she rises using the chair, not her healing hip. This is the feature that most directly protects the 90-degree rule during transfers.

Wide, sturdy armrests. She should push down through the armrests to lower and rise — never pull on a walker or reach forward. Firm, full-length arms give her the leverage to stay upright.

A stable, non-moving base. Avoid rocking, swiveling, gliding, or wheeled chairs. Anything that shifts under her while she transfers is a fall waiting to happen. A solid base stays put.

An upright transfer position. The chair should start and return to a fully upright "sit" position so she is never lowering into or rising from a reclined angle.

If she needs a wider, more supportive seat, an oversized lift chair keeps all of these safety features while giving her more room. Edward Creation is a family-owned mobility retailer, and our team is happy to walk a caregiver through which features apply to a specific set of surgeon's precautions.

You will find genuine disagreement online. Some hospital guides say to avoid recliners entirely; others permit a carefully chosen high lift recliner; forum threads swing both ways. The reason is that "recliner" describes dozens of very different mechanisms — and the safety comes from the chair's height, firmness, and base, not its category. Here is how the three main options compare for strict hip precautions.

The most medically conservative choice is a power lift recliner used in its upright position: it gives her the firm, high, stable seat a straight-back chair offers, plus a powered lift to protect the hip during transfers — and it converts to a comfortable recliner later, once her surgeon clears reclining. If reclining itself worries her care team, she can simply keep it upright. A conventional recliner without a lift can work only if it is firm, tall enough, and does not rock — but it will not assist her standing, so most families recovering from hip surgery are better served by a lift chair.

"High and firm" is only half the answer. A seat that fits a six-foot man will leave a petite woman perched with her feet dangling, and a seat too shallow for a taller person forces her to slide forward and lose the support that keeps her hip aligned. The right fit depends on her height, her weight, and the length of her thighs — not on the chair's marketing.

Three measurements settle it. Seat height should meet the floor-to-back-of-knee number from Section 2. Seat depth should let her sit all the way back with a small gap behind her knees, so she is supported without her knees being pushed up. Seat width and weight capacity should give her room to shift and rise comfortably; if a standard 20-inch seat feels tight, a wider option is worth it.

Families often worry these chairs look clinical. They no longer have to. Today's lift recliners come in fabrics and finishes that sit comfortably in a living room, so the chair that protects her hip does not announce itself as medical equipment. Choosing one she is happy to keep also means the investment keeps paying off long after recovery — as an everyday recliner with the bonus of a powered lift for years to come.

The first question most families ask is whether to rent or buy. Renting can make sense for a short, defined recovery when she already owns suitable seating for the long term — you pay a weekly or monthly fee and return the chair when precautions lift. Buying almost always costs less over a recovery of several months, and it leaves her with a comfortable, genuinely useful chair afterward rather than a return date. For most hip-replacement recoveries, which run weeks into months, purchasing a chair she will keep is the better value.

Now the part that trips up nearly everyone. Medicare Part B treats the lift mechanism of a lift chair as durable medical equipment — but only the motorized lifting device itself, never the chair frame, upholstery, cushions, or reclining features. In practice that means Medicare may help toward the lifting component when a doctor documents medical need, while the rest of the chair — the large majority of the price — is out of pocket. A plain recliner has no lift mechanism, so it carries no such benefit at all. Do not count on coverage to pay for "the chair"; plan around price, value, and financing instead.

Because the chair is largely an out-of-pocket purchase, treat it as an investment worth getting right the first time. Edward Creation is family-owned, and we would rather help you choose one chair that fits her precautions and her frame than sell you a replacement later. A well-chosen power lift chair serves her through recovery and stays useful for years.

Even a perfect chair can be used unsafely. The way your mom sits down and stands up matters as much as the seat height itself, because those two moments are when the hip is most likely to fold past 90 degrees or the body is most likely to lose balance. Walk through this sequence with her before surgery so it feels automatic afterward.

To sit down: have her back up slowly until she feels the front of the seat against the back of her legs. She slides the operated leg slightly forward, reaches back for both armrests, and lowers herself gently using her arms — never dropping into the chair or bending forward at the waist. Feet stay apart, with toes and knees pointing forward.

To stand up: she moves to the front edge of the seat, keeps the operated leg forward, and pushes up from the armrests — not from a walker. Only once she is steady and upright does she reach for the walker. With a powered lift chair, the lift does much of this work, raising her toward standing so she barely bends the hip at all.

For a chair built around exactly this kind of controlled, upright transfer, we point families toward multi-motor models that hold a firm, fully upright "sit" position and lift smoothly. The LuxQuad 4-Motor Lift Chair gives independent control of the back and legs, so she can keep the backrest upright for safe transfers now and add gentle leg elevation later once her surgeon clears it. Check its seat height and depth against her measurements, and send those numbers to her care team before you order.