Key takeaways

  • Tears are graded 1 to 4. First and second degree are common and heal well; third and fourth degree (called OASIS) involve the anal muscle and need specialised repair.
  • First vaginal birth, a big baby, assisted (forceps/vacuum) delivery, a long pushing stage and the baby facing the wrong way all raise tear risk.
  • Warm compresses on the perineum during pushing, controlled delivery of the head, and avoiding routine episiotomy are proven ways to reduce severe tears. Antenatal perineal massage helps first-time mothers.
  • Most tears are stitched with dissolvable sutures and heal in 4 to 6 weeks. OASIS needs antibiotics, stool softeners and a structured 6 to 12 week follow-up.
  • See a doctor for fever, increasing pain, foul-smelling discharge, a wound that opens, or any leaking of gas or stool - these need prompt review.
  • Even after a severe tear, most women recover well and go on to have healthy future pregnancies.

Understanding the anatomy and types of tears

  • First-degree: only the vaginal lining and perineal skin, not the muscle. Usually small, with little bleeding. Often heals without stitches or with a simple closure, and recovery is quick. Very common.
  • Second-degree: extends into the perineal muscle but spares the anal sphincter. Usually needs stitching and typically heals over 4 to 6 weeks. A planned episiotomy is essentially a controlled second-degree injury.
  • Third-degree: involves the anal sphincter. Sub-graded as 3a (under 50% of the external sphincter torn), 3b (over 50% torn), and 3c (both external and internal sphincters torn). Needs specialised repair, antibiotics and structured follow-up.
  • Fourth-degree: extends through the anal sphincter into the rectal lining, the most severe injury. Needs careful layered repair and antibiotics.

OASIS, episiotomy and how common tears are

Third and fourth degree tears together are called Obstetric Anal Sphincter Injuries (OASIS). Their classification and management are standardised worldwide - RCOG, ACOG, FIGO and FOGSI all publish guidance. OASIS repair should be done by trained providers, with antibiotics and a planned postnatal review.

Not every birth injury fits the four-degree scale. Anterior tears (in front of the vaginal opening, including labial and periurethral tears), cervical tears, high vaginal tears and combination injuries each have their own assessment and repair.

An episiotomy is a deliberate cut in the perineum during delivery. The two types are midline (straight down toward the anus) and mediolateral (at a 45 to 60 degree angle). Routine episiotomy for every birth has been abandoned - the evidence is clear that using it only when specifically needed (selective use) leads to better outcomes. RCOG, ACOG, WHO, FIGO and FOGSI all recommend selective rather than routine episiotomy. Genuine reasons to perform one include suspected fetal distress needing a faster delivery, an instrumental (especially forceps or vacuum) delivery, or an impending severe tear.

Globally, first-degree tears occur in roughly 30 to 50% of vaginal births and second-degree in a similar range. OASIS affects about 2 to 6% of vaginal births overall, but more in high-risk groups. Episiotomy rates vary enormously, from under 10% in evidence-based settings to over 80% in some traditional practice.

Indian data is limited but broadly similar, with OASIS reported in roughly 1 to 5% of vaginal births and higher rates in first births and instrumental deliveries. Indian hospitals historically had very high episiotomy rates (often over 80 to 90%), but these are falling as evidence-based, selective practice spreads. FOGSI promotes selective episiotomy and good tear management, and major centres such as AIIMS, PGI, CMC Vellore and JIPMER have largely adopted these approaches.

Risk factors: who is more likely to tear

  • Fetal head position: an occiput-posterior baby (facing forward) presents a wider diameter, often meaning longer labour and a higher tear rate.
  • Prolonged second stage: a longer pushing phase increases tissue swelling and reduces stretch, raising risk.
  • Instrumental delivery: forceps in particular carry a notably higher OASIS rate than vacuum; both are higher than a spontaneous birth.
  • Shoulder dystocia: the manoeuvres needed when the shoulder is stuck raise injury rates.
  • Previous OASIS: recurrence risk in a later vaginal birth is around 5 to 7%, modestly above the baseline.
  • Midline episiotomy: extends to OASIS more often than a mediolateral cut, which is why mediolateral is preferred when a cut is needed.
  • Ethnicity and anatomy: research suggests South and East Asian women may have somewhat higher OASIS rates; a short perineal length can also matter. The reasons are not fully understood.

Prevention strategies supported by evidence

  • Antenatal perineal massage: from around 34 to 35 weeks, gentle daily stretching of the perineum modestly reduces tearing and episiotomy, especially for first-time mothers - see our step-by-step guide to perineal massage in late pregnancy.
  • Pelvic floor strength: regular Kegel and pelvic floor exercises in pregnancy support function and recovery, though they do not directly prevent tears.
  • Good nutrition: adequate protein (dal, paneer, eggs, fish, meat as appropriate), vitamin C, vitamin E and zinc support tissue integrity and healing.
  • Manage underlying conditions: controlling gestational diabetes and other issues lowers the chance of a large baby and related trauma.
  • Antenatal education: understanding what to expect, including through a birth plan and childbirth class, helps you ask for these measures.

Repair of tears at delivery

Repair is done by the obstetrician or midwife straight after birth, with the technique matched to severity. Good technique and the right materials matter for the outcome, and FOGSI, RCOG, ACOG and FIGO all provide guidance.

The first step is a careful assessment - the attendant examines the perineum, vagina, cervix and rectum to find every injury, with good lighting and adequate pain relief (local anaesthetic, or your existing epidural if you have one). Accurate grading guides the repair.

Small first-degree tears that are not bleeding may be left to heal on their own; larger or bleeding ones get a simple closure. Second-degree tears are usually repaired in three layers - vaginal lining, muscle, then skin - increasingly with a continuous subcuticular skin stitch, which causes less pain and needs no removal. Rapidly absorbing polyglactin (Vicryl Rapide) is recommended for the skin and standard polyglactin for deeper layers; both are widely available in India.

OASIS repair is different and should be done by trained providers, usually in theatre with proper lighting, instruments, anaesthesia and assistance. For a fourth-degree tear the rectal lining is closed first, then the internal anal sphincter, then the external sphincter (by end-to-end or overlapping technique - outcomes are similar), and finally the vagina, muscle and skin. A third-degree repair addresses the sphincter without rectal repair. Antibiotic prophylaxis is essential for OASIS to lower infection risk.

The operative note should record the tear grade, structures involved, technique, suture material and antibiotics given - this matters for follow-up and future pregnancy planning. Where a tear is complex or local expertise is limited, prompt transfer to a higher-level facility is appropriate. After OASIS, a review at 6 to 12 weeks checks healing and sphincter function. FOGSI and ICOG offer training to build this expertise across India.

Recovery and healing after tears

  • Bowel care: prevent constipation with fluids (2.5 to 3 litres a day), fibre and a stool softener (psyllium husk, lactulose or PEG) if needed. Don't strain; a footstool to raise your feet helps. After OASIS, softeners continue for several weeks.
  • Urination: brief burning is common as urine meets healing tissue - pouring warm water as you go eases it. Inability to pass urine is rare but needs review.
  • Sex: usually waits until 4 to 6 weeks and a postnatal check. A water-based lubricant helps with the dryness that is common while breastfeeding; persistent pain deserves review - see intimacy after childbirth.
  • Pelvic floor: gentle postpartum pelvic floor rehabilitation can start early and supports recovery, continence and sexual function.
  • Activity and work: light walking within days; build back to running, weights and yoga over about 4 to 8 weeks. India's Maternity Benefit Act allows 26 weeks of leave for the first two children in eligible workplaces, giving time to recover.

Complications and what to watch for

  • Anal incontinence: leaking of wind, liquid or solid stool, or urgency, is the most concerning long-term effect of OASIS. Many women have no symptoms; others vary. Help ranges from diet and pelvic floor physiotherapy to sacral nerve stimulation or sphincter surgery.
  • Urinary incontinence: leaking with coughing or urgency can follow vaginal birth - pelvic floor physiotherapy is first-line; see our guide to stress urinary incontinence.
  • Pelvic organ prolapse: a sensation of bulge or pressure may develop; pelvic floor exercises, pessaries or surgery help depending on severity.
  • Painful sex or scar pain: tissue changes, hormones and healing can cause dyspareunia or perineal neuralgia - both are treatable, not inevitable.
  • Rectovaginal fistula: a rare, serious link between rectum and vagina after a fourth-degree tear, signalled by gas or stool passing through the vagina, needing specialist repair.
  • Haemorrhoids: common around birth and often confused with tear pain - see our postpartum haemorrhoid recovery guide.

Future pregnancies and long-term outlook

  • What to weigh after OASIS: the grade of the previous injury (3a/3b/3c/4th), how well it healed, any ongoing symptoms, expected baby size and whether an instrumental birth is likely.
  • Options to discuss: a planned vaginal birth with trauma-reducing measures (warm compresses, controlled delivery, restricted episiotomy), versus an elective caesarean to avoid perineal trauma. There is no single right answer.
  • When caesarean is often favoured: significant ongoing symptoms such as incontinence or severe painful sex. Asymptomatic women with a well-healed repair can reasonably plan a vaginal birth.
  • Persistent symptoms: pursue treatment whether or not you plan another pregnancy - pelvic floor physiotherapy is first-line, with surgical revision for refractory cases.
  • Lifelong pelvic floor health: keep up pelvic floor exercises, avoid chronic constipation, maintain a healthy weight, and note that menopause can unmask older injuries (where topical oestrogen can help).

When to see a doctor

  • Fever above 38 degrees C, chills or feeling generally unwell
  • Pain that is increasing rather than easing, or becomes severe
  • Foul-smelling discharge from the wound or vagina
  • The wound opening up, or visible separation of the stitches
  • Spreading redness, warmth or swelling around the wound
  • Any leaking of wind, liquid or solid stool, new urgency, or stool soiling
  • Inability to pass urine, or heavy fresh bleeding from the repair site
  • Passing gas or stool through the vagina (urgent - possible fistula)

Frequently asked questions

How long do perineal stitches take to heal?

Stitches are almost always dissolvable, so they don't need removing. First and second-degree tears typically heal over 4 to 6 weeks, with the worst discomfort in the first week. OASIS takes longer and needs a structured 6 to 12 week review. The dissolving threads may take a few weeks to disappear fully.

Will a tear affect my sex life?

For most women, sexual function is good in the long term, even after a severe tear. Sex usually waits until 4 to 6 weeks and a postnatal check. Early dryness (common while breastfeeding) responds to a water-based lubricant. Persistent pain is not something to accept - it is treatable, and worth raising with your doctor.

Is it better to tear naturally or have an episiotomy?

Routine episiotomy is no longer recommended - it does not prevent severe tears and increases overall trauma. A spontaneous tear, when it happens, is often less severe than a cut. Episiotomy is reserved for specific situations such as fetal distress or an instrumental birth, and a mediolateral cut is preferred when one is needed.

If I tore badly once, will it happen again?

No - this is a myth. Recurrence of OASIS in a later vaginal birth is only about 5 to 7%, modestly above the baseline. Most women with a previous severe tear have an uncomplicated next birth. Your team will tailor advice to your previous tear's grade, your healing and any ongoing symptoms.

Can perineal massage really prevent tearing?

Antenatal perineal massage, done from around 34 to 35 weeks, gives a modest reduction in tearing and episiotomy, with the clearest benefit for first-time mothers. It is not a guarantee, but it is safe, free and easy to do at home with a partner or on your own.

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