Injuries to Females Due to Intercourse - Gynaecological & Forensic Textbook Review

1. External Genitalia (Vulva, Labia, Clitoris)

• Bruising and lacerations of the labia and vulva, with redness, swelling, and inflammation
• Clitoris: may become red, swollen, and oedematous
• Abrasions and bruises on the inner thighs and perineum are noted in cases of violence
• In children, redness and tenderness of the vulva may be the only finding, as the hymen often remains intact

2. Hymen

• Laceration of the hymen occurs with first intercourse; in a virgin, this is the principal forensic evidence of penetration
• Tears occur posteriorly, at one or both sides, or in the midline
• The semilunar hymen often ruptures on both sides; the annular hymen (which nearly closes the vaginal orifice) may suffer several tears
• Immediately after, torn margins are sharp, red, and bleed on touch
• Examined 3-4 days post-intercourse: edges of laceration are congested and swollen, surrounding tissues are tender
• Signs of recent rupture: ragged tears with lack of epithelial healing, oedema, and haemorrhage
• Digital penetration (indecent assault): laceration is usually single, lateral, and often incomplete

3. Fourchette and Fossa Navicularis

• Small tears (a few mm) are commonly seen in the regions of the fourchette and fossa navicularis, produced by excessive stretching of the skin
• The fourchette is particularly fragile and frequently tears at first intercourse
• Fossa navicularis disappears with first penetration
• Posterior commissure rupture may occur at first intercourse, especially with size disproportion; this injury does not usually occur in consenting intercourse without significant disproportion

4. Vaginal Walls and Vault

• Abrasion and bruising of the hymen and vaginal orifice can occur even without hymenal tear, from digital or penile penetration
• Bruising of the vagina: dark-red area; turns deep-red or purple within 24 hours
  • More frequent on the anterior vaginal wall in the lower third and posterior wall in the upper third
  • Bruising of this pattern is more consistent with penile penetration
  • Abrasion is more frequent with digital penetration

• With violent intercourse, laceration of the vaginal wall invariably occurs posteriorly or slightly posteriorly
• Laceration of the vaginal wall or vault is rare following intercourse in women of child-bearing age
• It can occur in:
  • Very young children (whose vagina is proportionally small)
  • The atrophic post-menopausal vagina
  • Cases of gross disproportion between penis and vagina
  • Insertion of large foreign bodies (sticks, large vibrators, dildos)
  • Intercourse in the "standing erect" position (in children and adults)

• Posterior laceration of the vaginal vault can result from consenting intercourse when there is:
  • Marked size disproportion
  • Very active/enthusiastic copulation
  • Complete abstinence from intercourse for a considerable period of time
• Vault injuries range from minimal mucosal trauma to extensive lacerations; they are not seen in the anterior fornix
• Lacerations in the posterior fornix (right side more than left) may also be caused by instruments used by sexual perverts - these are not typical of penile intercourse alone

• In rape without preliminary stimulation, lubrication will be lacking, leading to more severe local bruising and injury to the vaginal wall

5. Cervix

• Abrasion of the cervix and vagina occurs almost invariably with vaginal penetration, more commonly from digital than penile penetration
• Erosions: seen as bright-red areas around the external os with well-defined margins; may bleed on contact
• Colposcopy (5-30x magnification) is used to visualize cervical injuries
• Forcible dilation of the vagina results in some degree of local injury to the cervix in the majority of adult rapes

6. Perineum

• Perineal tearing occurs in cases of forcible penetration, particularly in children
• Broad-based, painful gait indicates the presence of significant genital injury
• A large linear tear extending from the fossa navicularis through the posterior fourchette onto the perineum (midline) is a recognized pattern of severe penetrative injury, along with bilateral tears on either side

7. Factors Influencing the Degree and Pattern of Injury

8. An Important Clinical Note

"The absence of trauma to a rape victim does not negate the validity of her claim of rape. While up to 70% of female victims of sexual assault may have some sort of documented extragenital trauma, only 19% of those were found to be significant injuries. In a study of 1,266 sexually assaulted women, only 24% had documented genital injuries."

Sources

• Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology (pp. 434-436)
• The Essentials of Forensic Medicine and Toxicology, 36th ed. (2026) (pp. 409-411)
• DiMaio's Forensic Pathology, 3rd ed. (p. 427)
• Rosen's Emergency Medicine, Concepts and Clinical Practice
• Roberts and Hedges' Clinical Procedures in Emergency Medicine

Treatment of Genital Injuries from Intercourse

1. Immediate Local Wound Management

Minor injuries (abrasions, bruising, superficial tears)

• Conservative management is sufficient for most minor injuries
• Ice packs / cold compresses applied to the vulva for swelling and haematoma
• Sitz baths (warm water soaks) to reduce discomfort and promote healing
• Topical anaesthetic gels (e.g. lidocaine gel) for local pain relief, particularly at the fourchette and vaginal introitus
• Analgesics: oral NSAIDs or paracetamol for pain management
• Minor abrasions and bruising heal spontaneously within days without specific intervention

Haematoma of the vulva

• Small haematomas: conservative - ice, compression, analgesia, monitoring
• Expanding or large haematomas: surgical drainage and haemostasis under anaesthesia

Lacerations requiring repair

• Hymenal lacerations with active bleeding: suturing with fine absorbable suture (e.g. 3-0 Vicryl/polyglactin 910) under adequate anaesthesia
• Fourchette tears: most small tears heal by secondary intention; deep or actively bleeding tears require suturing
• Vaginal wall lacerations: repaired in layers with absorbable suture; minimal tension closure
• Perineal lacerations: principles of repair same as episiotomy repair - 2-0 or 3-0 absorbable suture in layers (vaginal mucosa, deep perineal tissues, skin); polyglactin 910 (Vicryl) preferred over catgut - results in less wound dehiscence and less postpartum perineal pain
• Vault lacerations / posterior fornix injuries: require examination under anaesthesia (EUA) by a gynaecologist for full assessment and repair; if bowel or bladder is involved, involves a surgical team

Cases with substantial bleeding or medically unstable injury

• Examination under anaesthesia (EUA) is mandatory - a gynaecologist must perform this
• Haemostasis, irrigation, and layered closure
• Blood transfusion if significant haemorrhage

2. STI Prophylaxis and Testing

In postpubertal females (adolescents and adults) - routine prophylaxis is recommended

• Baseline STI testing (NAAT) for gonorrhoea, chlamydia, and trichomonas should be performed before prophylaxis is started
• Testing should also include: syphilis (RPR), Hepatitis B, Hepatitis C, HIV
• Repeat testing at 6, 12, and 24 weeks post-assault for HIV and hepatitis B/C

In prepubertal children

• Presumptive STI treatment is NOT recommended for prepubertal children
• Incidence of ascending infection is low; follow-up can usually be ensured
• Testing is performed first; treatment follows confirmed positive results
• This preserves the forensic significance of infection as evidence of abuse

3. Emergency Contraception

• Levonorgestrel (Plan B): offered within 72 hours (3 days) - can prevent up to 50% of pregnancies
• Ulipristal acetate: effective up to 120 hours (5 days) post-assault
• Both work by suppressing ovulation and will not terminate an established pregnancy
• Pregnancy testing is performed first in all pubertal females before offering these agents
• Intrauterine device (copper IUD) can also be inserted up to 5 days post-assault for maximum efficacy

4. HIV Post-Exposure Prophylaxis (PEP)

• Time-critical: PEP must be started within 72 hours of assault to be effective
• Decision depends on: nature and timing of assault, local HIV prevalence, HIV status of perpetrator (if known)
• Consult infectious diseases - the CDC maintains a 24-hour PEP hotline: 1-800-933-3413
• Standard HIV PEP regimen: typically a 3-drug antiretroviral regimen for 28 days (per current CDC guidelines)

5. Vaccination

• Hepatitis B: if not fully vaccinated - administer HBV vaccine series; if known HBV exposure, Hepatitis B Immune Globulin (HBIg) is given
• HPV vaccine: initiate or complete the HPV immunization series in children and adolescents aged ≥9 years who have not been fully vaccinated

6. Follow-Up Care

• Follow-up examination at 2 weeks post-assault (DiMaio's Forensic Pathology)
• Repeat STI testing (HIV, Hepatitis B/C) at 6, 12, and 24 weeks
• Assessment of HIV PEP tolerance
• Completion of vaccination series
• Mental health referral: psychological support and counselling is an essential part of management - trauma-focused therapy, crisis counselling

7. Special Situations

Post-menopausal women

• Atrophic vaginal mucosa heals poorly and is prone to more severe injury
• Topical oestrogen can be applied post-healing to restore mucosal health and reduce recurrence
• More conservative, gentle follow-up care required

Children with vault / perineal rupture

• In rare cases of gross violence to a child, vaginal vault rupture may cause visceral injuries (bowel/bladder involvement)
• These require urgent surgical exploration under general anaesthesia with a paediatric surgeon and gynaecologist
• Can be life-threatening and may require laparotomy

Summary Table

• Rosen's Emergency Medicine, Concepts and Clinical Practice (pp. 3912, 3957, 4007-4014)
• Red Book 2021, Report of the Committee on Infectious Diseases (pp. 302, 640-646)
• Roberts and Hedges' Clinical Procedures in Emergency Medicine
• DiMaio's Forensic Pathology, 3rd ed. (p. 628)
• Pfenninger and Fowler's Procedures for Primary Care, 3rd ed.

Minute Bleeding 24 Hours After Consensual Disproportionate Intercourse

What Is Happening

"Soon after the act, the torn margins are sharp and red, and bleed on touch. Even when examined after 3 to 4 days of the offence, the edges of laceration are congested and swollen. The surrounding tissues are also swollen and tender."

Most Likely Source of the Bleeding

1. Posterior Fourchette / Fossa Navicularis Tear (most common)

• The fourchette is the most fragile structure and tears first under stretching
• "Small tears (a few mm) may be seen in the regions of fourchette and fossa navicularis produced by excessive stretching of the skin" - Essentials of Forensic Medicine & Toxicology, 36th ed.
• At 24 hours the edges are congested and ooze small amounts of blood
• The fossa navicularis disappears with significant disproportion

2. Hymenal Laceration (if first intercourse or partial hymen)

• Tears occur posteriorly; margins remain sharp, red, and congested for 3-4 days
• Bleed on the slightest touch at this stage
• Posterior commissure may also have torn if disproportion was significant

3. Posterior Vaginal Wall Abrasion / Bruise

• "Posterior laceration of the vaginal wall may result from consenting intercourse where there has been (a) marked disproportion between penis and vagina, (b) very active and enthusiastic copulation" - Essentials of FM & Toxicology, 36th ed.
• At 24 hours, vaginal bruising transitions from dark-red to deep-red or purple, and abraded surfaces ooze slightly
• More frequently seen on the posterior wall in the upper third

4. Posterior Fornix Minor Mucosal Trauma

• With disproportionate intercourse, the fornix receives more mechanical force
• Vault injuries range from minimal mucosal trauma to lacerations; minimal trauma presents exactly as minute oozing at 24 hours

Is This Normal? What the Textbooks Say

• Bruising and congestion at injury margins peak at 24-48 hours before beginning to resolve
• Edges of lacerations remain friable and bleed on contact until epithelial healing begins (starts around 3-5 days)
• A second examination is specifically recommended in forensic practice because "bruising may take a little time to come to the surface, especially in the lower vagina" - Essentials of FM & Toxicology

When Is It NOT Normal (Red Flags)

Management for Minute Bleeding at 24 Hours

1. No intercourse until fully healed (typically 7-10 days minimum)
2. Sitz baths (warm water soaks 2-3 times daily) - soothe tissue, reduce oedema, keep clean
3. Gentle cleansing with plain water only - avoid soap, douches, or antiseptics directly on the wound
4. Avoid tight clothing or anything that creates friction at the site
5. Oral NSAIDs (ibuprofen) for pain and inflammation
6. Topical lignocaine (lidocaine) gel for local pain relief if needed
7. Monitor - bleeding should reduce and stop within 1-3 days; wounds fully epithelialise by 5-7 days

• Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology (p. 435)
• The Essentials of Forensic Medicine and Toxicology, 36th ed. (2026) (pp. 409-411)
• Bailey and Love's Short Practice of Surgery, 28th ed. (p. 1606)