Arthroscopy (keyhole joint surgery) usually means smaller scars, less early pain and a quicker return home than open surgery – but for many operations the long-term result is the same, and for some problems open surgery is still the better or only option. The right choice depends on the condition, not on incision size alone.
If your orthopedic surgeon has recommended joint surgery, you may wonder whether it can be done “through a keyhole”. This guide from the team at Sports Orthopedics Institute compares arthroscopy and open surgery on three things that matter most to patients – complexity, time and outcomes – using the best available evidence.
Key takeaways
- Arthroscopy is the standard for many soft-tissue joint problems: meniscus and ligament surgery, most shoulder stabilisations and rotator cuff repairs, and hip impingement.
- Long-term outcomes are often equal: in a large UK trial, arthroscopic and open rotator cuff repair gave the same results at two years.
- The early recovery is usually easier after arthroscopy, with less pain and shorter hospital stays.
- Open surgery remains essential for joint replacement, most fractures, complex reconstructions, bone-block shoulder stabilisation and many revision operations.
- Keyhole is not risk-free: complications after knee arthroscopy are uncommon but real, and arthroscopy does not help degenerative knee arthritis.
- Surgeon experience with the specific technique matters more than the size of the incision.
What Are Arthroscopy and Open Surgery?
Arthroscopy
Arthroscopy (from the Greek for “looking into the joint”) uses a pencil-thin camera and fine instruments passed through two or more small cuts, usually around 5 mm, to see and treat problems inside a joint. The joint is filled with sterile fluid to create space, and the magnified image is shown on a high-definition screen. Arthroscopy is used in the knee, shoulder, hip, ankle, elbow and wrist.
Open surgery
In open surgery, the surgeon makes a larger incision to see and work on the bone or joint directly. The incision may be a few centimetres or considerably longer, depending on the procedure. Modern “mini-open” and muscle-sparing approaches have reduced incision size for many operations.
Arthroscopically assisted surgery
Many operations combine both approaches – for example, an ACL reconstruction is performed arthroscopically but needs small additional incisions to harvest the graft and drill bone tunnels, and some fractures are reduced with arthroscopic guidance and fixed through small incisions.
Head to Head: How They Compare
|
|
Arthroscopy |
Open surgery |
|---|---|---|
|
Incision |
Two or more cuts of around 5 mm |
One larger incision, from a few centimetres upwards |
|
View of the joint |
Magnified camera view; excellent inside the joint |
Direct view and touch; better for bone and large reconstructions |
|
Technical demands |
High skill and specialist equipment; working through small portals |
Wider access; easier to handle large implants, bone and unexpected findings |
|
Hospital stay |
Usually day-care or one night |
Often one to several nights, depending on the operation |
|
Early pain |
Usually less |
Usually more |
|
Early recovery |
Often faster in the first weeks |
Often slower in the first weeks |
|
Long-term outcome |
Often equal to open surgery for the same repair |
Equal or better for some problems (bone loss, large reconstructions) |
|
Scarring |
Small scars |
Larger scar |
|
Typical uses |
Meniscus, ACL, shoulder instability, rotator cuff, hip impingement, ankle impingement |
Joint replacement, fractures, Latarjet, osteotomy, many revisions |
The recovery after arthroscopy is often limited not by the incision but by the biology of what was repaired. A meniscus or ligament repaired through a keyhole still needs months to heal.
Complexity: What Each Approach Suits
Arthroscopy excels at soft-tissue problems inside a joint; open surgery is needed when large amounts of bone must be cut, replaced or fixed.
|
Joint |
Usually arthroscopic |
Usually open (or mini-open) |
|---|---|---|
|
Knee |
Meniscus repair or trimming, ACL and PCL reconstruction, loose bodies, many cartilage procedures |
Knee replacement, osteotomy, most fractures, large cartilage grafts, multi-ligament reconstructions (often combined) |
|
Shoulder |
Bankart repair for instability, rotator cuff repair, frozen shoulder release, labral repair |
Latarjet bone-block for significant bone loss, shoulder replacement, complex fractures |
|
Hip |
Labral repair, femoroacetabular impingement, loose bodies |
Hip replacement, periacetabular osteotomy, most fractures |
|
Ankle |
Impingement, osteochondral lesions, many ankle fusions |
Ankle replacement, most fractures, complex deformity correction |
|
Elbow and wrist |
Loose bodies, stiffness release, selected ligament injuries |
Fractures, ligament reconstructions, joint replacement |
Why arthroscopy is technically demanding
Arthroscopy requires the surgeon to work in three dimensions from a two-dimensional image, through small portals, often in tight joints such as the hip and ankle. It needs specialist training and a learning curve. Hip arthroscopy in particular is one of the more demanding procedures.
Why open surgery is sometimes necessary
Open surgery gives direct access to bone, allows large implants to be placed, and lets the surgeon deal with unexpected findings. It is often the safer choice for revisions, where scar tissue and previous implants distort the anatomy.
Outcomes: What Head-to-Head Studies Show
When the same operation can be done either way, arthroscopy often matches open surgery on long-term results – but not always.
Rotator cuff repair: no difference at two years
The UK UKUFF randomised trial compared arthroscopic and open repair in 273 patients aged 50 or over with degenerative rotator cuff tears. At two years there was no difference in shoulder function or cost-effectiveness, and re-tear rates were high in both groups (Bone & Joint Journal, 2017). The choice can therefore be guided by surgeon expertise and patient factors.
Shoulder instability: technique and bone loss matter
Older studies, using earlier arthroscopic techniques, found higher recurrence after arthroscopic Bankart repair than open repair. A meta-analysis of suture-anchor repairs found similar recurrence overall (6% arthroscopic vs 6.7% open), with arthroscopic repair performing better in studies after 2002 (Knee Surgery, Sports Traumatology, Arthroscopy, 2010). However, when there is significant bone loss from the socket or multiple dislocations, the open Latarjet bone-block procedure has lower recurrence than arthroscopic Bankart repair (Clinical Medicine Insights, 2025).
Ankle fusion: arthroscopic often favoured
In a comparative multicentre series, arthroscopic ankle fusion gave greater improvement in ankle scores at one and two years and a shorter hospital stay (2.5 vs 3.7 days) than open fusion (JBJS, 2013). Open fusion remains preferred for major deformity.
A note on degenerative knee arthritis
Arthroscopic “washout” or trimming does not help degenerative knee arthritis or degenerative meniscus tears in most middle-aged and older people; exercise-based physiotherapy is the evidence-based first treatment. See our meniscus treatment guide for details.
Time: Operation, Hospital Stay and Recovery
Arthroscopy usually shortens the hospital stay and the first few weeks of recovery; the total time to full recovery depends mainly on what was repaired.
Operating time
Simple arthroscopic procedures such as a meniscus trim may take 30–45 minutes; reconstructions such as an ACL take around 1–2 hours. Open operations vary widely; a joint replacement typically takes 1–2 hours. Arthroscopy is not always quicker in theatre – its advantage is in the recovery.
Typical recovery by procedure
|
Procedure |
Approach |
Hospital stay |
Desk work |
Full activity or sport |
|---|---|---|---|---|
|
Partial meniscectomy |
Arthroscopic |
Day-care |
3–7 days |
6–8 weeks |
|
Meniscus repair |
Arthroscopic |
Day-care or 1 night |
1–2 weeks |
4–6 months |
|
ACL reconstruction |
Arthroscopic |
Day-care or 1 night |
1–2 weeks |
At least 9 months for pivoting sport |
|
Rotator cuff repair |
Arthroscopic or open |
Day-care to 1–2 nights |
2–4 weeks (sling) |
4–6 months or more |
|
Shoulder stabilisation (Bankart) |
Arthroscopic |
Day-care or 1 night |
1–2 weeks (sling) |
4–6 months |
|
Latarjet |
Open |
1–2 nights |
2–3 weeks (sling) |
4–6 months |
|
Hip arthroscopy |
Arthroscopic |
Day-care or 1 night |
2–3 weeks |
3–6 months |
|
Ankle fusion |
Arthroscopic or open |
1–3 nights |
2–6 weeks |
4–6 months |
|
Total knee replacement |
Open |
1–3 days |
4–6 weeks |
Good function by 3 months; full recovery up to a year |
These are typical ranges and vary with your health, job and the details of the surgery.
Risks and Complications
Both approaches are safe in experienced hands; arthroscopy generally has lower wound-related risks, but it is not risk-free.
Arthroscopy
In a US national database of about 69,000 knee arthroscopies, the 30-day complication rate was 1.75%; the most common problems were return to theatre (0.46%), deep vein thrombosis (0.37%) and superficial infection (0.21%) (ISAKOS). A surgeon-reported database of over 92,000 knee arthroscopies found a higher overall rate of 4.7%, with infection the most common complication at 0.84% (PubMed). Rates are higher after longer and more complex procedures.
Possible complications: infection, blood clots, bleeding into the joint, stiffness, nerve irritation around the portals, and fluid-related swelling. Rarely, an arthroscopic operation must be converted to open surgery.
Open surgery
Open surgery involves more tissue disruption, so risks of wound problems, bleeding, stiffness and blood clots tend to be higher, and the scar is larger. These risks are kept low with antibiotics, careful technique, early mobilisation and clot prevention.
Reducing your risk
Stopping smoking, controlling diabetes, managing weight, staying mobile after surgery and following clot-prevention advice all reduce complications, whichever approach is used.
When Arthroscopy Is Not the Answer
“Keyhole” is not automatically better; choosing it for the wrong problem can mean a worse result or a second operation.
- Advanced arthritis: joint replacement, an open operation, is the effective treatment; arthroscopic cleaning gives little lasting benefit.
- Degenerative knee problems: most middle-aged and older people with degenerative meniscus tears do as well with physiotherapy as with arthroscopy.
- Shoulder instability with significant bone loss: an open Latarjet procedure is often more reliable than arthroscopic repair.
- Most fractures: usually need open or mini-open fixation, sometimes with arthroscopic assistance.
- Major deformity or large reconstructions: osteotomy, complex ligament reconstruction or large cartilage grafts often need open access.
- Some revisions: previous surgery, scar tissue and implants can make open surgery safer.
Consider non-surgical treatment first
For many joint problems, a structured physiotherapy programme, activity modification and weight management should be tried before any surgery, unless there is a mechanical problem – such as a locked knee, a displaced fracture or a complete ligament tear in an active person – that will not recover without it.
Cost Considerations
Arthroscopy uses more expensive equipment and disposables, but shorter hospital stays can offset this. In the UKUFF trial, arthroscopic rotator cuff repair cost slightly more upfront, but there was no difference in total costs or cost-effectiveness at two years (UKUFF, NIHR).
In India, the overall cost depends mainly on the procedure, implants (such as anchors or screws), hospital category and length of stay rather than the approach alone. Most health insurance policies cover medically necessary arthroscopic and open orthopaedic surgery; check your policy limits and obtain pre-authorisation. You will receive an itemised estimate after consultation.
Choosing the Right Approach
The best approach is the one that most reliably fixes your specific problem in your surgeon's hands. The decision usually depends on:
- The diagnosis: soft-tissue problem inside the joint, or bone, fracture or arthritis
- Severity: for example, the amount of bone loss in shoulder instability
- Previous surgery and scar tissue
- Your goals: sport, work and timeline
- Your general health
- The surgeon's experience with each technique
Questions to ask your surgeon
- Can my operation be done arthroscopically, and is that the better option for my problem?
- What does the evidence show about outcomes for each approach in my condition?
- How many of these procedures do you perform each year?
- Is there a chance the operation will need to be converted to open surgery?
- How long will I be in hospital, and when can I return to work, driving and sport?
- What rehabilitation will I need, and for how long?
- Are there non-surgical options I should try first?
How Sports Orthopedics Institute Can Help
Our surgeons perform both advanced arthroscopy and open reconstruction, so we recommend the approach that best fits your problem – not the one we happen to offer.
- Thorough assessment: examination, X-ray and MRI to define the problem precisely.
- Arthroscopic expertise: knee, shoulder, hip, ankle and elbow arthroscopy, including ligament reconstruction, meniscus and rotator cuff repair, and shoulder stabilisation.
- Open and reconstructive surgery: joint replacement, Latarjet, osteotomy and fracture fixation when they are the better option.
- Integrated rehabilitation: structured physiotherapy and criteria-based return to sport.
Considering joint surgery in Bengaluru? Book a consultation with our team to understand your options.
Frequently Asked Questions
Is arthroscopy better than open surgery?
For many soft-tissue joint problems it gives an easier early recovery with similar long-term results. For others – joint replacement, most fractures, shoulder instability with significant bone loss – open surgery is better or the only option.
Is recovery faster after arthroscopy?
The first few weeks are usually easier, with less pain and a shorter hospital stay. But total recovery depends on what was repaired: an arthroscopic ACL reconstruction still needs at least nine months before pivoting sport.
How long does arthroscopic surgery take?
Simple procedures take around 30–45 minutes; reconstructions such as an ACL typically take 1–2 hours.
Can I go home the same day after arthroscopy?
Often, yes. Many arthroscopic procedures are day-care; more complex reconstructions may need one night in hospital.
Can I walk after knee arthroscopy?
Usually on the same day after simple procedures. After meniscus repair or cartilage surgery, crutches and limited weight-bearing are often needed for several weeks.
Why might an arthroscopic operation be converted to open surgery?
Unexpected findings, difficult anatomy, bleeding or poor visibility. Converting is a safety decision, not a failure.
Can arthritis be treated arthroscopically?
Generally not. Arthroscopic washout or trimming gives little lasting benefit in knee arthritis. Advanced arthritis is treated with joint replacement, an open operation.
Why can't joint replacement be done arthroscopically?
Replacement requires removing worn bone surfaces and fitting large implants, which needs open access, although modern techniques use smaller, muscle-sparing incisions.
Is arthroscopy safe?
Yes. Large studies report 30-day complication rates of around 2–5% after knee arthroscopy, most of them minor. Infection and blood clots are uncommon but possible.
Is arthroscopy covered by insurance in India?
Medically necessary arthroscopic and open orthopaedic procedures are generally covered, subject to your policy terms and pre-authorisation.
References
- Carr A, et al. Effectiveness of open and arthroscopic rotator cuff repair (UKUFF): a randomised controlled trial. Bone & Joint Journal, 2017.
- Clinical effectiveness and cost-effectiveness of open and arthroscopic rotator cuff repair (UKUFF). NIHR Health Technology Assessment.
- Petrera M, et al. A meta-analysis of open versus arthroscopic Bankart repair using suture anchors. Knee Surgery, Sports Traumatology, Arthroscopy, 2010.
- Arthroscopic Bankart repair versus open Latarjet for anterior shoulder instability: systematic review and meta-analysis. 2025.
- Townshend D, et al. Arthroscopic versus open ankle arthrodesis: a multicenter comparative case series. Journal of Bone and Joint Surgery (Am), 2013.
- 30-day complications and readmission after knee arthroscopy: NSQIP analysis. ISAKOS, 2019.
- American Board of Orthopaedic Surgery database study: Complications after arthroscopic knee surgery (PubMed).
Disclaimer: This article is for educational purposes only and does not replace a consultation with a qualified orthopedic surgeon.