Risks of Revision Surgery — Why It Is a Bigger Operation
Part of The Joint Replacement Guide — Phase 3: Understanding the Risks · Article 18 of 42 · Hip & Knee
Key Points
- Revision surgery means replacing or adjusting some or all of a previous joint replacement, and is generally a bigger, more complex operation than the original.
- Outcomes from revision surgery are, on average, less predictable than from primary (first-time) joint replacement.
- Sensible timing and management of your primary surgery are among the best ways to reduce your lifetime risk of ever needing revision.
- A full article on what revision surgery involves and how common it is appears later in this guide — this article focuses specifically on why it carries higher risk.
What Is Revision Surgery?
Revision surgery involves removing and replacing some or all of the components from a previous joint replacement. The most common reasons include infection, implant loosening or wear over time, instability or recurrent dislocation, fracture around an existing implant, and, less commonly, persistent stiffness or pain without a clear alternative cause.
Why It’s a Bigger Operation
Removing a well-fixed implant, particularly one that has been in place for many years, often results in some loss of the surrounding bone, and scar tissue from the original surgery makes the operation technically more demanding. Revision surgery therefore typically takes longer than a primary joint replacement, and sometimes requires specialised implants — larger, more constrained, or custom-made components — or bone grafting to rebuild areas of bone loss. As a result, the general surgical risks covered earlier in this guide, such as bleeding, infection and blood clots, are all somewhat higher for revision surgery than for a primary operation.
Outcomes Are Generally Less Predictable
On average, patient satisfaction and functional outcomes after revision surgery, while often still a real improvement, tend to be somewhat less predictable and on average less good than after primary joint replacement. This varies considerably depending on the reason for revision — for example, revision surgery to treat infection carries a different, generally more complex prognosis than revision performed for straightforward implant wear — which is why the specific cause of failure matters a great deal when planning and discussing a revision operation with your surgeon.
How to Delay or Avoid It
While not every revision is avoidable, several factors genuinely reduce your lifetime risk: sensible timing of your primary surgery (neither rushing into it too young nor delaying so long that the operation becomes more complex, as discussed earlier in this guide), appropriate implant and fixation choice for your individual bone quality and activity level, and attending your follow-up appointments so that any early problems can be identified and addressed before they progress. Looking after your general health — maintaining a healthy weight and good bone health — also supports the longevity of your implant.
In More Depth
National joint registry data consistently shows that the great majority of primary hip and knee replacements remain in good working order well beyond a decade, with only a minority ever requiring revision — reassuring context alongside the honest discussion of revision risk in this article. Because revision surgery is technically more demanding and less common than primary replacement, many national health systems, including the NHS, increasingly favour concentrating complex revision cases in specialist units or with surgeons who perform a higher volume of this type of surgery, reflecting a well-established general surgical principle that outcomes tend to be better where a team has more experience with a particular, technically demanding procedure.
This article is general information and does not replace individual clinical advice.
Sources
- National Joint Registry — Annual Report, revision rates and implant survivorship data
- British Orthopaedic Association — revision surgery guidance
- GIRFT (Getting It Right First Time) — National Report on Orthopaedics
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