Key takeaways
- Cervical cerclage is a stitch around the cervix that supports a pregnancy when the cervix opens too early without contractions (cervical insufficiency).
- It is offered for three reasons: a history of mid-trimester losses (history-indicated), a short cervix on scan (ultrasound-indicated), or an already-open cervix (rescue/exam-indicated).
- McDonald (a simple purse-string stitch) is the most common technique; Shirodkar — developed by Indian gynaecologist Dr V N Shirodkar in 1955 — places the stitch higher and is used in selected cases.
- Live-birth rates are roughly 70–90% for planned (history-indicated) cerclage and 40–65% for emergency rescue cerclage — much better than no intervention.
- Vaginal progesterone is a good alternative or add-on for many women, especially when the only finding is a short cervix.
- In India a cerclage is free at government tertiary hospitals under JSSK; private cost is roughly ₹15,000–50,000, and PMJAY covers eligible families up to ₹5 lakh a year.
What is cervical insufficiency, and why does it happen?
Cervical insufficiency (the older term "cervical incompetence" is now avoided) means the cervix cannot hold a pregnancy through the second trimester even though there are no contractions or labour. The classic picture is painless opening of the cervix, usually between 16 and 24 weeks, so the membranes bulge into the vagina, often followed by waters breaking and a rapid, unexpected loss. This is different from preterm labour, which is driven by uterine contractions — cervical insufficiency is mainly a structural problem of the cervix itself.
Normally the cervix stays firmly shut through pregnancy because of dense, strong tissue (collagen and elastin) in its wall, a protective mucus plug, and a length of around 3–5 cm that only shortens in the final weeks before birth. When that strength fails early — because of weak tissue, surgical injury, or a structural difference present from birth — the cervix gives way under the growing weight of the pregnancy.
Who is at higher risk? The main risk factors are:
Understanding the cause matters because it shapes the plan. A weak cervix from past surgery, for example, is managed differently from a one-off unexplained loss.
In the Indian context, recognised cervical insufficiency affects roughly 1–2% of pregnancies overall and more in women with risk factors — similar to global figures. As cervical cancer screening expands across India, more women are having pre-cancer treatments like LEEP or cone biopsy, which slightly raises future risk; wider HPV vaccination should reduce the need for such procedures over time. Most insufficiency is recognised only in a second pregnancy after an unexplained loss, which is why a careful history at booking is so important. The reassuring point: insufficiency is a treatable cause of mid-trimester loss, and structured high-risk care substantially improves outcomes in the next pregnancy.
The three indications: history, ultrasound and exam-indicated cerclage
Cerclage is offered for three distinct reasons, and the timing and success rates differ for each.
1. History-indicated (planned or elective) cerclage is based on your past obstetric history. It is usually offered when there have been three or more second-trimester losses or very early preterm births with the painless-dilation pattern, when a previous pregnancy needed a cerclage, or sometimes after two such losses if the pattern strongly suggests insufficiency. It is placed at about 12–14 weeks, once an early scan confirms a viable pregnancy and first-trimester screening tests are complete. Live-birth rates are around 70–90% in well-selected women.
2. Ultrasound-indicated cerclage is based on a short cervix found on a transvaginal ultrasound during the current pregnancy. The usual trigger is a cervical length under 25 mm before 24 weeks in a woman with a previous spontaneous preterm birth before 34 weeks (some centres use thresholds of 20 mm or 15 mm). High-risk women are scanned every 1–2 weeks between roughly 16 and 24 weeks; if the cervix shortens, the stitch is placed soon after, usually 16–23 weeks. Funnelling — the internal opening starting to widen — is an extra warning sign. This approach reduces preterm birth by about 35–40% in this group.
3. Exam-indicated (rescue or emergency) cerclage is based on actually finding the cervix already open with the membranes visible — usually when a woman comes in with vaginal pressure, discomfort, or leaking. This is a true emergency: the stitch is placed within hours, because even a short delay can mean further opening and loss. It is attempted up to about 24 weeks (a few centres extend to 25–26 weeks). Live-birth rates are lower — around 40–65% — but still far better than the alternative of near-certain loss. Rescue cerclage is not done if labour is established, if there is intrauterine infection (chorioamnionitis), if the waters have broken (a relative contraindication), if the placenta is separating, or if there is a fetal abnormality that is not survivable.
How the choice is made in practice: a strong classic history usually means a planned stitch at 12–14 weeks. One or two earlier preterm births with an unclear cause are usually managed with cervical-length surveillance and an ultrasound-indicated stitch only if the cervix shortens. An incidentally short cervix with no prior loss is often managed with vaginal progesterone instead of surgery, since the two have similar effect. And an open cervix with bulging membranes is managed with emergency rescue cerclage unless contraindicated.
Vaginal progesterone (200 mg daily from 16–24 weeks until 34–36 weeks) is a key part of this picture. It can be used instead of a stitch when the only issue is a short cervix, alongside a stitch in the highest-risk women, or for women who decline surgery. It costs roughly ₹1,500–3,500 a month and is free at government facilities. The three-indication framework exists so that the stitch is offered to the women most likely to benefit and avoided where it would not help.
Surgical techniques: McDonald, Shirodkar and transabdominal
There are two main vaginal techniques — McDonald and Shirodkar — plus a third, transabdominal cerclage, reserved for specific situations.
McDonald cerclage (described by Ian McDonald in 1957) is the simpler and most common technique worldwide and across India. With the cervix held in view, a strong non-absorbable suture (such as Mersilene tape or Ethibond) is placed around the cervix as a purse-string, taking bites at four points high on the cervix and then tightened to close the canal. It takes about 30–45 minutes, often needs only spinal anaesthesia, and is easy to remove later — the stitch is simply cut and withdrawn. Its limitation is that the stitch sits a little lower than ideal and can occasionally slip if the cervix is very short.
Shirodkar cerclage was developed by the Indian gynaecologist Dr V N Shirodkar in 1955 — a contribution that still carries his name in obstetrics worldwide. It is more involved: the bladder is gently pushed up off the front of the cervix and the rectum off the back, so the stitch can be placed higher, closer to the internal opening, and tunnelled through the cervical tissue. It takes about 45–90 minutes, usually needs general anaesthesia, and is a little harder to remove. The advantage is a more secure, higher placement, which can help when the cervix is very short or a McDonald stitch has failed before.
Which one? McDonald is first choice for most women because it is simpler and just as effective in well-selected patients. Shirodkar is reserved for a very short cervix at the time of surgery, a previous failed McDonald cerclage, a badly scarred or distorted cervix, or surgeon preference. In well-selected women both give similar live-birth rates (around 70–90% for history-indicated cerclage), and both usually allow a vaginal birth after removal.
Transabdominal cerclage (TAC) is a specialised option in which the stitch is placed higher still — at the junction of the cervix and uterus — through the abdomen, by open surgery or laparoscopy. It is used when vaginal cerclage has failed repeatedly, or when there is very little or no cervix (for example after a trachelectomy for cervical cancer, or very extensive cone biopsy). It is usually placed before pregnancy or in early pregnancy (10–14 weeks), stays in permanently, and means delivery is always by Induction of Labour in India: Methods, Costs and How to Decide. In the right women it has the highest success rates (over 90% live birth) but is major surgery. It is done at specialised tertiary centres such as AIIMS, PGI Chandigarh, and large private hospitals, costing roughly ₹50,000–2,00,000 privately and free at government tertiary facilities. Overall, the menu of techniques means there is a suitable option for almost every situation.
Before the procedure: assessment and planning
Good preparation is what makes a cerclage succeed, and Indian high-risk obstetric units do this in a structured way. The work-up confirms the right indication, rules out reasons not to proceed, and gets the timing right.
Your team will go through:
A few infections quietly raise the risk of a cerclage failing, so they are looked for and treated first — a urine infection, bacterial vaginosis or another vaginal infection. A short course of antibiotics (often cefazolin or azithromycin) is given just before the stitch to lower the chance of infection.
Timing depends on the indication. A planned (history-indicated) stitch goes in at 12–14 weeks — after first-trimester screening, after the highest-risk period for early miscarriage, and before the usual window for mid-trimester loss. An ultrasound-indicated stitch is placed within 1–2 weeks of a short cervix being found, because shortening can progress quickly. A rescue stitch is placed within hours.
When a cerclage should not be placed: established labour with regular contractions, intrauterine infection (chorioamnionitis), active bleeding suggesting the placenta is separating, broken waters (a relative reason — it raises infection risk sharply), a fetal abnormality that is not survivable, or a maternal condition that makes surgery too risky. Recognising these protects you from a procedure that would not help.
What the cerclage procedure is like, step by step
Knowing what happens on the day removes a lot of the fear. The description below is for the common McDonald technique.
Getting ready: you are admitted (usually the morning of the procedure), kept fasting for 6–8 hours, reviewed by the anaesthetist, and given the pre-procedure antibiotic. You empty your bladder, change into a gown, and go to the operating theatre.
Anaesthesia: spinal anaesthesia is the most common — a single injection numbs you from the waist down for a few hours while you stay awake. General anaesthesia is used for Shirodkar and transabdominal cerclage, and sometimes for McDonald by preference.
Positioning: you lie with your legs supported (lithotomy position), sometimes tilted slightly head-down for a rescue case to ease the membranes back; the area is cleaned and draped.
The stitch (McDonald): a speculum brings the cervix into view, it is held gently with forceps, and the non-absorbable suture is passed around the cervix at four points to form a purse-string, high on the cervix but not through the internal opening. It is tightened just enough to close the canal — not so tight that it damages tissue — then knotted securely, with the ends left long enough to find easily at removal. Any minor bleeding is controlled and the speculum removed. The whole thing usually takes 30–45 minutes.
For a Shirodkar stitch, the surgeon first lifts the bladder and rectum away from the cervix so the suture can be placed higher and then covers it back over with the tissue — adding to the operating time (45–90 minutes in total).
Straight after: you are monitored in recovery, the baby's heartbeat is checked, and the spinal wears off over 2–4 hours. Discomfort is usually mild — paracetamol, and ibuprofen if needed (ibuprofen is avoided after 30 weeks). Most women go home the same day or the next day after a planned stitch; rescue cases are watched longer. Cerclage is a well-established, predictable procedure that experienced surgeons perform routinely with good results.
Recovery and managing the rest of your pregnancy
Once the stitch is in, the focus shifts to a calm, well-monitored pregnancy. Modern care has moved away from strict bed rest — it does not improve outcomes and brings its own risks (blood clots, deconditioning, low mood). The usual advice is to avoid strenuous activity — heavy lifting, vigorous exercise, and usually sex — while continuing normal daily life, light walking and light work. Your doctor will tailor this to your situation.
Other parts of the plan often include:
Watch for and report at once: regular contractions, vaginal bleeding, fluid leaking (a sign the waters may have broken), severe abdominal pain, fever, or foul-smelling discharge — it helps to know your usual pattern, so reviewing normal versus abnormal discharge is worthwhile. The threshold for getting checked or admitted should be low; it is always better to be seen and reassured.
Removing the stitch: a McDonald cerclage is usually removed at 36–37 weeks as a quick outpatient step — the suture is identified, cut and gently pulled out in a minute or two, no anaesthesia needed — so you can go into labour and deliver vaginally. A Shirodkar stitch may need light anaesthesia to retrieve. The stitch is taken out earlier if labour starts (leaving it in could tear the cervix), if the waters break, if there is heavy bleeding or infection, or if the baby needs to be delivered. A transabdominal stitch is left in and the baby is delivered by caesarean. After removal, labour may follow within hours or days, or you may carry on to term. With this structured care, the great majority of well-selected women have a successful pregnancy.
Outcomes by indication: live-birth rates and what improves them
Outcomes vary a lot by indication, and honest numbers help with decisions and expectations.
History-indicated (planned) cerclage in well-selected women achieves a live-birth rate of roughly 70–90%, with about half to two-thirds reaching term and mid-trimester loss falling below 10% (compared with around 30% recurrence without any intervention). Better outcomes go with earlier placement (12–14 weeks), a history indication only (no added short cervix), no extra risk factors, a longer cervix at the time of the stitch, and good attendance at follow-up.
Ultrasound-indicated cerclage in women with a previous preterm birth who then develop a short cervix gives roughly a 35–40% relative fall in preterm birth before 35 weeks, with a live-birth rate around 75–85%. Results are best when the cervix is only moderately short (15–25 mm) and the stitch goes in earlier (before 22 weeks). For women with a previous preterm birth whose cervix stays normal length on serial scans, a stitch is not needed — progesterone alone may be enough.
Exam-indicated (rescue) cerclage is the most variable, depending on how open the cervix is, whether the membranes are intact, and the gestation. Overall it gives a live-birth rate of about 40–65% (versus under 20% without it) and typically prolongs the pregnancy by 8–12 weeks — so a stitch at 22 weeks may buy delivery at 30–34 weeks. Better outcomes go with less dilation (under 3 cm), intact membranes, earlier presentation, no infection, and a single baby.
When a cerclage fails — meaning preterm birth or loss happens despite it — the cause may be something the stitch cannot fix (infection, placental separation, the load of twins), progressive shortening or funnelling above the stitch, broken waters, or the suture pulling through a very weak cervix. The response is closer monitoring, progesterone, antenatal steroids and magnesium where appropriate, delivery at a centre with a NICU, and — importantly — emotional support, because a failed stitch is devastating. For a next pregnancy, options include a Shirodkar instead of a McDonald, a transabdominal stitch (about 90% live birth after a failed vaginal cerclage), or combined protocols.
Longer term: babies born at term after a successful cerclage do as well as any term baby; those born preterm do as well as expected for their gestation — and better than they would have at the original loss gestation, thanks to the weeks gained. Mothers recover normally, and future pregnancies usually have a stitch placed again. What is often underestimated is the emotional weight: pregnancy after a loss is intensely anxious, and structured support for anxiety in pregnancy after loss is part of good care, not an afterthought.
Complications and how they are managed
Complications from a cerclage are uncommon, especially in experienced hands, and recognising them early keeps outcomes good.
During the procedure: anaesthesia risks are small (a post-spinal headache in 1–2%, rarely anything serious). Accidentally breaking the membranes is rare but serious — more likely with a very short cervix or already-bulging membranes — and usually means stopping. Minor cervical bleeding is common and settles; bladder or rectal injury is very rare and slightly more likely with the Shirodkar dissection. A stitch placed too tight, too loose or in the wrong spot can also reduce its benefit.
In the first days to weeks: infection (chorioamnionitis or cervicitis) occurs in under 1–2% when antibiotics are given — watch for fever, abdominal pain, tenderness or foul discharge; confirmed intrauterine infection means the stitch must come out. Early preterm labour (under 5%) and broken waters (about 5–10%, slightly above the 2–3% background) usually mean removing the stitch and managing the birth.
Later on: the stitch can occasionally migrate or pull through the tissue, and if labour begins it must be removed before delivery to avoid a cervical tear. Injury at removal is usually minor, and cervical narrowing afterwards is very rare.
What keeps complications low is the combination that runs through this whole guide: an experienced surgeon, careful patient selection, the right timing, thorough pre-procedure checks, antibiotic cover, a gentle technique, and good follow-up with early reporting of warning signs. It is worth keeping perspective — the small risk of a cerclage complication is far outweighed by the alternative of repeated mid-trimester loss without one, and Indian tertiary units manage these complications well when they arise.
Cost, access and Indian healthcare pathways
Cost should not be a barrier to a cerclage in India. It is free at government tertiary hospitals under the JSSK and PMSMA programmes; in private hospitals a routine cerclage runs roughly ₹15,000–50,000 (McDonald at the lower end, Shirodkar mid-range), and a transabdominal cerclage ₹50,000–2,00,000.
The private cost is made up of the pre-procedure work-up (consultations, a transvaginal scan, blood and swab tests), the procedure itself (surgeon's fee, theatre and suture material), anaesthesia, the hospital stay, and ongoing costs over the pregnancy — progesterone (₹1,500–3,500 a month) and surveillance scans every 2–4 weeks. Stitch removal at 36–37 weeks is usually ₹3,000–8,000 privately and free at government hospitals.
Where it is done: a cerclage is a tertiary-care procedure offered at AIIMS centres, JIPMER, PGI Chandigarh, state medical colleges and regional hospitals with maternal-fetal medicine units, and at major private hospitals (Apollo, Fortis, Manipal, Max, Cloudnine, Cradle). Many district hospitals can do a simple McDonald stitch; Shirodkar and transabdominal usually need referral to a medical college.
How to access it:
A few practical pointers: if you have had a mid-trimester loss, book early — ideally by 6–8 weeks — at a centre with high-risk capability, because a planned stitch needs the decision made by 10–12 weeks. If you have had a previous preterm birth without clear insufficiency, cervical-length monitoring from 16–24 weeks at any centre with a transvaginal scanner will identify whether you need an ultrasound-indicated stitch. And recognising warning signs — mid-pregnancy pelvic pressure, increased discharge, contractions — and presenting promptly is what makes a rescue stitch possible. Schemes can be layered: start with JSSK/PMSMA at government facilities, add PMJAY or a state scheme for private care, and use private insurance if you have it. For the wider picture, the guide to understanding your pregnancy scans and reports explains the cervical-length and surveillance scans referred to here.
Alternatives, add-ons and the wider picture
A cerclage is one tool among several, and for many women the best plan combines or replaces it.
Vaginal progesterone (200 mg daily from 16–24 weeks until 34–36 weeks) lowers preterm birth in women with a short cervix on scan. It works through anti-inflammatory and muscle-relaxing effects and helps keep the cervix competent. It can be the main treatment when the only finding is a short cervix with no prior preterm birth (similar effect to a stitch, without surgery), an add-on alongside a stitch in the highest-risk women, or the choice for women who decline surgery. It costs roughly ₹1,500–3,500 a month and is free at government tertiary facilities.
17-hydroxyprogesterone caproate (17-OHPC), a weekly injectable progesterone once used for women with a previous preterm birth, was found in the PROLONG trial (2019) not to give clear benefit and has largely been withdrawn; vaginal progesterone has replaced it.
A vaginal pessary (such as the Arabin pessary) sits around the cervix to support it and change its angle. Evidence is mixed — some studies show benefit, others do not — but it is less invasive and reversible, and is used at some Indian centres. It costs roughly ₹3,000–15,000 and is not widely available outside major centres.
Bed rest is no longer recommended as a treatment — it does not clearly help and carries real risks; moderate activity restriction is reasonable only in specific situations.
Other measures are used where indicated, not as routine prophylaxis: tocolytics only for active preterm labour; antenatal steroids and magnesium sulphate around an actual or impending early delivery; antibiotics for any infection found; screening and treating bacterial vaginosis, urine infections and STIs; and stopping smoking, which meaningfully lowers preterm-birth risk.
The wider picture and self-care. Looking ahead, research is improving how we identify women at risk (beyond cervical length alone), tailoring combinations of cerclage and progesterone, and refining less-invasive transabdominal approaches — with Indian tertiary centres contributing studies on timing and outcomes in Indian women. What you can do: understand why a stitch is advised in your case, keep your surveillance scans, report warning signs early, look after your mental health (the anxiety and low mood that follow a loss are real and treatable), eat and rest well, avoid smoking and alcohol, treat any other conditions, and plan to deliver where there is NICU backup. The honest, reassuring bottom line: with cerclage, progesterone and structured high-risk care, the great majority of women who have had a mid-trimester loss go on to have a successful pregnancy.
Common myths about cervical cerclage, corrected
Myth: A cerclage means complete bed rest for the whole pregnancy
- Mostly false. Strict bed rest used to be standard but the evidence does not support it, and it carries real harms — blood clots in the legs that can travel to the lungs, muscle and bone loss, low mood and anxiety from confinement, isolation, and lost income — with no clear gain in cerclage success.
- Today the advice is to avoid strenuous activity (heavy lifting, vigorous exercise, usually sex) after a stitch, while continuing normal daily life — light walking, household tasks, light office work. Most women with a planned cerclage can keep working with some moderation; only those with more concerning findings need tighter restrictions, and even then rarely strict bed rest. Your high-risk obstetrician will tailor this to you.
Fact: McDonald is simpler and Shirodkar (named after Indian gynaecologist Dr V N Shirodkar) is more elaborate — but both work well
- True. McDonald cerclage (Ian McDonald, 1957) is the simpler, common technique — a purse-string stitch with no dissection, 30–45 minutes, often under spinal anaesthesia, and easy to remove. Shirodkar cerclage (Dr V N Shirodkar, 1955 — a landmark Indian contribution to obstetrics) is more elaborate, placing the stitch higher after lifting the bladder and rectum off the cervix, taking 45–90 minutes, usually under general anaesthesia.
- Both give similar live-birth rates in well-selected women (70–90% for history-indicated cerclage). McDonald is first choice for most cases; Shirodkar is chosen for a very short or distorted cervix, a previous failed McDonald, or surgeon preference. Dr Shirodkar's technique remains in use worldwide more than 70 years on, and both are routinely performed at experienced Indian centres.
Myth: A cerclage prevents all preterm births
- False. A cerclage specifically treats cervical insufficiency. It does nothing for other causes of preterm birth — preterm labour from infection or other triggers, pre-eclampsia or other conditions needing early delivery, the mechanical strain of twins, fetal reasons for early birth, or medically advised early delivery. In those situations a stitch gives no benefit and could be harmful.
- Even for cervical insufficiency it is not 100% effective: live-birth rates of 70–90% for planned and 40–65% for rescue cerclage mean some pregnancies still end early. The right framing is a cerclage as one part of structured high-risk care — combined with progesterone, infection treatment and monitoring — not a standalone guarantee.
Fact: Vaginal progesterone can replace or complement a cerclage in some cases
- True. Vaginal progesterone (200 mg daily from 16–24 weeks until 34–36 weeks) lowers preterm birth in women with a short cervix on scan, and trials show similar effect to a stitch in many situations — especially a short cervix without a previous preterm birth.
- Its advantages are real: no surgery or anaesthesia, no hospital admission, lower cost (₹1,500–3,500 a month versus ₹15,000–50,000 for a stitch), and it is reversible. The trade-offs are daily self-administration and occasional local irritation. In practice progesterone is often first choice for a short cervix alone, a stitch for a strong history of mid-trimester loss, and both together for the highest-risk women — not every woman needs a cerclage.
Frequently asked questions
Is a cervical cerclage painful?
The stitch itself is not felt because you have spinal or general anaesthesia. Afterwards most women have only mild discomfort or cramping for a day or two, controlled with paracetamol (and ibuprofen before 30 weeks). Removal of a McDonald stitch at 36–37 weeks usually needs no anaesthesia and takes a minute or two.
Can I have a normal vaginal delivery after a cerclage?
Yes, in most cases. A McDonald or Shirodkar stitch is removed at around 36–37 weeks so you can labour and deliver vaginally; caesarean is reserved for the usual obstetric reasons. The exception is a transabdominal cerclage, which stays in place permanently and means delivery is always by caesarean.
When in pregnancy is a cerclage placed?
A planned (history-indicated) stitch is placed at about 12–14 weeks, after early screening. An ultrasound-indicated stitch goes in within 1–2 weeks of a short cervix being found, usually 16–23 weeks. A rescue stitch for an already-open cervix is placed urgently, within hours, up to about 24 weeks.
Do I need a cerclage if my scan shows a short cervix but I have never lost a pregnancy?
Often not. For a short cervix with no previous preterm birth or mid-trimester loss, vaginal progesterone has similar benefit to a stitch and avoids surgery, so it is frequently the first choice. The decision is shared with your high-risk obstetrician based on your full history.
How successful is a cerclage?
It depends on the indication. A planned cerclage in well-selected women gives a roughly 70–90% live-birth rate; an ultrasound-indicated stitch reduces preterm birth by about 35–40%; an emergency rescue stitch gives around 40–65% — all far better than no intervention. A cerclage improves the odds substantially but does not guarantee a term birth.
Is a cerclage free in India?
It is free at government tertiary hospitals under the JSSK and PMSMA programmes, covering placement, scans, medicines, stay, removal and delivery. In private hospitals a routine cerclage costs roughly ₹15,000–50,000, and Ayushman Bharat PMJAY covers eligible families up to ₹5 lakh a year at empanelled hospitals.
Sources
- ACOG Practice Bulletin No. 142: Cerclage for the Management of Cervical Insufficiency
- RCOG Green-top Guideline No. 60: Cervical Cerclage
- WHO recommendations on interventions to improve preterm birth outcomes
- NHS – Cervical stitch (cervical cerclage)
- FOGSI (Federation of Obstetric and Gynaecological Societies of India)
- Ministry of Health and Family Welfare, India – Janani Shishu Suraksha Karyakram (JSSK)





