Cemented vs. uncemented hip replacement: how surgeons choose

Patients often hear “cemented” and “uncemented” as if the whole hip replacement must follow one method. The real plan can be more specific. The femoral stem and the socket can be fixed in different ways, creating fully cemented, fully uncemented, hybrid, or reverse-hybrid combinations. Much of the comparative evidence in this article focuses specifically on the femoral stem. Evidence about the socket and other components requires separate interpretation. [2]

Fixation is also separate from the bearing surface, surgical approach, and use of navigation or robotics. A ceramic head, for example, leaves the stem-fixation question open. If you are comparing implant plans, ask about each decision separately.

This guide provides general education. It cannot assess your bone quality, anaesthetic risk, or implant options. Those decisions require your surgeon and care team to connect examination, imaging, health, goals, and the exact implant system.

How does each fixation method work?

Cemented femoral fixation

The surgeon prepares the canal inside the thigh bone and uses surgical bone cement to secure the femoral stem in place. [2]

This can be helpful when the bone is less likely to tolerate the forces required for a tight press-fit stem. Cementing is a technique with its own planning and risks. The American Academy of Orthopaedic Surgeons notes the possibility of bone cement implantation syndrome, particularly in people with poor heart, lung, or kidney function, and says the fixation decision should be individualized. [1]

Uncemented femoral fixation

An uncemented stem is shaped and sized to achieve a tight fit inside the prepared femur. In some designs, a surface coating supports later bone growth onto the implant. Surgeons may favour this option when bone quality and anatomy provide reliable initial stability. The words uncemented and cementless are commonly used for the same general strategy. [2]

Creating the press fit places forces through the femur. In weaker bone, this can contribute to a crack during surgery or a fracture around the stem after surgery. Implant geometry and technique matter. The term “uncemented” covers multiple designs and risk profiles. [1]

Cemented and uncemented stems at a glance

This table describes broad patterns. Individual assessment still determines the plan. A patient can have reasons that point in different directions, and a surgeon may change the final stem choice after directly assessing the bone during the operation.

What can shape the choice?

A useful fixation discussion brings several factors together:

• Bone quality. Osteoporosis, thin bone, and the shape of the femoral canal can make a press fit less forgiving. Age offers one clue; bone strength needs a broader assessment. [1]
• Fracture risk. A fracture around a hip stem can require another operation and a difficult recovery. Avoiding that complication carries particular weight for patients with fragile bone. [4]
• Heart, lung, and kidney health. These conditions can affect the risk assessment for cement use and anaesthesia. The full medical history matters alongside age. [1]
• Activity and life stage. An uncemented stem is often considered in younger, more active patients with good bone. Individual assessment remains necessary for younger patients. [2]
• Implant design. Cemented and uncemented categories contain different stem shapes, coatings, and track records. Each design needs its own supporting evidence. [1]
• Surgeon experience. Ask which stem systems your surgeon uses and why the selected design fits your anatomy and bone.

The plan for the socket may differ from the stem. A hybrid replacement, for example, can use a cemented stem with an uncemented socket. Ask the surgeon to name the fixation plan for each component.

What does the evidence say?

The AAOS guideline for hip osteoarthritis says cemented femoral stems could be considered for older adults because they are associated with a lower risk of periprosthetic fracture. It labels the evidence low quality and the option moderate after an evidence-to-decision upgrade. The same guideline describes mixed findings for revision, infection, loosening, and dislocation across ages and follow-up periods. [1]

That uncertainty matters. The guideline evidence supports paying close attention to bone quality and fracture risk while leaving the overall choice individualized across outcomes and patients.

Periprosthetic fracture is uncommon and can be serious. A 2024 linked analysis of 809,832 hip replacements in England identified 5,100 fractures treated with revision or fixation. More than half were treated with fixation and would have been missed by revision-only registry analyses. Its main question was fracture incidence, providing context on the importance of fracture risk without comparing fixation methods. [4]

Does fixation change recovery?

Fixation is one part of the recovery plan. The surgical approach, bone quality, fracture or bone injury during surgery, soft-tissue repair, other procedures, health, and the surgeon’s protocol can all affect weight-bearing and activity instructions.

A cemented stem has immediate mechanical fixation, while an uncemented stem is designed to gain biological fixation over time. Recovery timing remains procedure-specific. Follow the restrictions given for your exact operation, including the prescribed weight-bearing plan.

For a broader view of the operation and early planning, see Pathway’s guides to hip replacement surgery and hip replacement recovery.

How Pathway’s podcast adds context

Pathway’s All Things Hip podcast discusses why cement can still be useful in weak bone and why fixation practice has changed over time. The hip replacement FAQ episode also frames press-fit versus cemented stems around bone quality and health, avoiding a strict age cut-off. These transcripts are useful first-party context. The clinical claims in this guide are supported separately by professional guidance, registry material, and peer-reviewed research.

How should Canadian patients read the registry data?

The Canadian Joint Replacement Registry’s 2024–2025 annual report includes fixation analyses. Its main cemented-versus-cementless revision figures apply to partial hip replacements for acute hip fracture in patients age 70 and older. That is a different population and operation from an elective total hip replacement for osteoarthritis. Using those figures for every elective patient would exceed the report’s scope. [3]

This scope boundary is useful: Canadian data can inform the conversation, but the indication, implant, patient group, and outcome must match the question. For an elective consultation, ask the surgeon which evidence and implant track record are most relevant to your diagnosis and proposed stem.

Pathway’s hip replacement service overview can help you organize the larger procedure discussion. Implant availability, fixation choice, and candidacy require an individual assessment.

Questions to take to your appointment

• Are you recommending a cemented, uncemented, hybrid, or reverse-hybrid replacement?
• Which components would use cement? Which would use cementless fixation?
• What do my X-rays and health history suggest about my bone quality and fracture risk?
• Would osteoporosis testing or treatment change the plan?
• What is the main reason this stem and fixation method fit me?
• Which implant-specific outcomes or registry data support the choice?
• What cement-related or press-fit-related risk matters most in my case?
• Could the final fixation plan change during surgery, and why?
• Does this plan change my weight-bearing instructions or follow-up imaging?
• What symptoms after surgery should prompt an urgent call?

A clear recommendation should connect the fixation plan to your bone, health, implant, goals, and the surgeon’s experience. Ask for the reasoning in plain language, and avoid using “cemented” or “uncemented” as a quality label.

References

1. American Academy of Orthopaedic Surgeons. Management of Osteoarthritis of the Hip: Evidence-Based Clinical Practice Guideline. 2023. Used for the older-adult fixation recommendation, evidence quality, fracture risk, cement-related risk, and the need to individualize by bone quality and health.
2. National Joint Registry. Hip replacement. Patient guide used for component combinations and the general distinction between cemented and uncemented fixation.
3. Canadian Institute for Health Information. Hip and Knee Replacements in Canada: CJRR Annual Report, 2024–2025. Used to define the scope of current Canadian fixation analyses.
4. Lamb JN, Evans JT, Relton S, Whitehouse MR, Wilkinson JM, Pandit H. The incidence of postoperative periprosthetic femoral fracture following total hip replacement: An analysis of UK National Joint Registry and Hospital Episodes Statistics data. PLOS Medicine. 2024;21(10):e1004462. Published October 1, 2024.

Sources accessed November 9, 2026. This article provides general education. Your surgeon and care team should determine which implant or fixation method is appropriate for you. See our editorial policy.