Hip replacement vs hip resurfacing: who is each operation actually for?

Hip resurfacing is not simply “a smaller hip replacement.” It uses a different femoral-side design and is offered to a narrower group of patients.

Why total hip replacement dominates

THA has a very broad evidence base, modern bearing choices, and applicability across age groups and bone qualities. For most patients with advanced hip arthritis, it is the standard surgical comparison.

Why resurfacing still exists

Hip resurfacing can appeal to selected younger, active patients with good bone quality who want femoral bone preservation and large-head stability.

The metal-on-metal issue

Modern hip resurfacing typically uses metal-on-metal bearings, which creates specific concerns around metal ions, adverse local tissue reactions, implant positioning, and surveillance.

Bone quality matters

Resurfacing requires an adequate femoral head/neck and is generally less attractive in osteoporosis, certain cystic changes, small bone size, or other conditions that raise fracture risk.

Activity

Resurfacing is often discussed with very active patients, but activity recommendations are individualized and implant longevity still matters.

Questions to ask

• Why am I a resurfacing candidate rather than a standard THA candidate?
• What implant system is used?
• How are metal ions monitored?
• What is the femoral-neck fracture risk?
• What happens if resurfacing needs revision later?

Femoral-neck fracture and implant positioning

Because resurfacing preserves the femoral neck, fracture of that retained bone is a specific complication. Component positioning also matters to metal wear and ion generation. These are reasons resurfacing has a steeper selection and technical threshold.

Sex and implant size considerations

Modern resurfacing candidacy discussions often consider femoral-head size and sex because smaller components have historically been associated with higher failure rates in some device series. Ask the surgeon whether your anatomy falls within the population where they believe outcomes are most reliable.

Future revision

One theoretical appeal of resurfacing is preserving femoral bone for later conversion to a total hip replacement. But revision is still major surgery and can be complicated by metal-related tissue changes if they develop.

Cost and surveillance

Do not compare only initial surgery cost. Resurfacing can involve future metal-ion testing or imaging surveillance in some patients, which adds long-term follow-up obligations.

How to compare two real surgeon recommendations

If two qualified clinicians recommend different procedures, ask each to explain the anatomy or diagnosis driving the recommendation. Then compare the assumptions: what problem each believes is primary, what each procedure leaves untreated, what additional procedures might be needed later, and what complication/revision pathway each creates.

Do not compare a fully worked-up recommendation with a marketing estimate based only on photos or a short questionnaire. The quality of the input data affects the apparent certainty of the recommendation.

What cost comparisons should include

Compare surgeon, facility, anesthesia, implants/devices, imaging, pathology, rehabilitation, medications, follow-up, revision policy, time away from work, and travel when relevant. A procedure that is cheaper on the day of surgery may cost more if it predictably requires more follow-up or a second stage.

When a second opinion has unusually high value

A second opinion is especially useful when the procedures are irreversible, the two options remove different amounts of native tissue, one has substantially greater long-term maintenance, or clinicians disagree about the underlying diagnosis rather than merely the technique.