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A Urological Emergency: Testicular Torsion, the 6 Hour Window, Diagnosis and Surgery
Testicular torsion happens when the testicle twists around the spermatic cord and its blood supply is cut off. It is a urological emergency in which minutes count: without timely treatment the testicle can be lost. This guide covers every aspect, from symptoms and the diagnostic pathway to modern surgery, fixing the other testicle and torsion in newborns.
Overview
Testicular torsion is the sudden, painful twisting of the testicle around the spermatic cord and the vessels inside it. If treatment is delayed it can lead to loss of the testicle. It is most common between the ages of 12 and 18, but it can happen at any age.
One factor decides the outcome: time. When the twist is corrected surgically within the first 6 hours, more than 90 percent of testicles are saved; after 12 hours the rate falls below 50 percent, and after 24 hours the testicle is usually lost.
Sudden, severe pain on one side of the scrotum in a teenager is testicular torsion until proven otherwise. Waiting, trying to fix it at home or masking it with painkillers leads to irreversible damage.
What Is Testicular Torsion?
Normally the testicle hangs within a small space in the scrotum on the spermatic cord. The cord brings arterial blood to the testicle, drains venous blood away and contains the vas deferens, which carries sperm. Apart from its attachment point, the testicle can move freely around this cord.
In men with an anatomical predisposition, the testicle can suddenly turn 90, 180 or even 720 degrees. The twist first blocks the veins, then the arterial supply. Oxygen no longer reaches the testicle and its tissue suffers irreversible ischaemia within hours.
Anatomy and the "Bell-Clapper" Deformity
In normal anatomy the back of the testicle is fixed inside the scrotum to the wall of the tunica vaginalis through the epididymis, which stops it rotating. In some men, however, the testicle hangs freely inside the tunica vaginalis like the clapper of a bell. This is called the bell-clapper deformity.
- It is present in about 12 percent of men
- It does not always cause torsion, but it creates the risk
- It is usually present on both sides, which is why the other testicle is fixed when one twists
- It is hard to detect in childhood
- It tends to run in families
Types of Testicular Torsion
| Type | Where the twist happens | Typical patient |
|---|---|---|
| Intravaginal | Inside the tunica vaginalis | Puberty onwards (the most common) |
| Extravaginal | The whole cord, together with the tunica vaginalis | Newborns, before birth |
| Intermittent | Brief twists that untwist on their own | Men with recurring attacks of pain |
| Subacute or chronic | Slow, partial twisting | Atypical presentations |
How Common It Is and at What Age
- Overall: about 1 in 4,000 males under 25
- Main peak: 12 to 18 years, as testosterone makes the testicle grow and move more
- Second peak: the newborn period (first week)
- The left testicle is affected slightly more often than the right, because its cord is longer
- Twisting of both sides at once is rare (under 2 percent)
- It is rare in adults; an existing anatomical anomaly is then suspected
Causes and Risk Factors
Predisposing Factors
- Bell-clapper deformity: the most important predisposition
- Rapid growth of the testicle during puberty
- A wide tunica vaginalis
- A long spermatic cord
- A history of undescended testicle
- Previous scrotal surgery
- Family history
Triggers
- Cold weather, which makes the cremaster muscle contract
- A blunt blow to the scrotum
- Intense physical activity and sport
- Waking suddenly from sleep
- Sexual arousal
- Sitting for long periods
Symptoms
The Classic Picture
- Sudden, severe pain on one side of the scrotum, the first symptom in 90 percent of cases
- Pain spreading to the lower abdomen
- Nausea and vomiting (30 to 50 percent)
- Swelling and redness of the scrotum
- Pain that worsens when walking or moving
- A warmer testicle
- Usually no fever, unlike epididymitis
Atypical Presentations
- Abdominal pain only, especially in children
- Mild discomfort, which delays diagnosis
- Pain when passing urine
In children and teenagers with unexplained abdominal pain, the scrotum must always be examined. In many cases of torsion the first complaint is described as tummy ache, and the diagnosis is delayed because the testicle is not checked.
Examination Findings
- A testicle lying higher than normal, as the twisted cord shortens
- A testicle lying horizontally instead of vertically
- Loss of the cremasteric reflex: a highly specific sign. Stroking the inner thigh normally pulls the testicle up; in torsion there is no response
- Negative Prehn sign: lifting the testicle does not ease the pain (in epididymitis it does)
- Swelling and redness of the scrotal skin (late signs)
- Tenderness across the whole scrotum
- In children, a hard, enlarged testicle may be felt
The 6 Hour Golden Window
In testicular torsion, time equals outcome. The chance of saving the testicle by hours since the pain began:
| Time since onset | Testicle survival | Expected outcome |
|---|---|---|
| Under 6 hours | 90 to 100 percent | Full function returns |
| 6 to 12 hours | 50 to 70 percent | Risk of shrinkage (atrophy) |
| 12 to 24 hours | 20 to 40 percent | Lasting damage in most |
| Over 24 hours | Under 10 percent | Orchiectomy needed in most |
For this reason, surgery is planned as soon as the patient arrives rather than waiting for imaging. When the classic signs are present, treatment starts; an ultrasound must not delay it.
How Testicular Torsion Is Diagnosed
The diagnostic pathway is built to keep delay to a minimum:
- Quick history: timing, onset of pain and other symptoms
- Quick examination of the scrotum and abdomen
- High clinical suspicion: surgical exploration without waiting for a Doppler ultrasound
- Low to moderate suspicion: an urgent scrotal Doppler ultrasound
- In practice, the TWIST score or similar decision aids are used
Blood and urine tests help rule out other conditions, but they must never delay treatment.
Scrotal Doppler Ultrasound
This is the gold standard imaging test for torsion.
Classic Ultrasound Findings
- Reduced or absent arterial flow, the most important finding
- Whirlpool sign: the twisted cord forms a typical spiral pattern, the most specific finding (96 percent)
- Uneven texture of the testicle (late cases)
- Thickening of the scrotal wall
- A reactive hydrocele
- Thickening of the tunica albuginea
Limitations
- Early on, arterial flow can still look preserved
- A partial twist (under 180 degrees) can be missed
- In intermittent torsion the scan is normal between attacks
- If the scan is normal but suspicion remains, surgical exploration is not delayed
The TWIST Score
TWIST (Testicular Workup for Ischemia and Suspected Torsion) is a scoring system based on examination findings. It predicts whether imaging is needed.
| Finding | Points |
|---|---|
| Hard testicle | 2 |
| Scrotal swelling | 2 |
| Absent cremasteric reflex | 1 |
| Nausea or vomiting | 1 |
| High riding testicle | 1 |
What the Score Means
- 0 to 2 points: low risk; other diagnoses are considered and an ultrasound is done
- 3 to 4 points: intermediate risk; ultrasound is essential
- 5 to 7 points: high risk; direct surgical exploration is recommended
Conditions That Look Similar
| Condition | Distinguishing features |
|---|---|
| Epididymitis | Gradual onset, fever, urinary symptoms, positive Prehn sign |
| Torsion of the appendix testis (Morgagni) | Local tenderness, a "blue dot" sign, milder than testicular pain |
| Scrotal injury | History of trauma, bruising, blood around the testicle |
| Trapped inguinal hernia | A groin lump that cannot be pushed back, bowel obstruction |
| Henoch-Schönlein purpura | Pinpoint rash on the legs, joint pain, kidney involvement |
| Acute appendicitis | Tenderness at McBurney's point, Rovsing sign |
In the Emergency Department
- Priority at triage: not life threatening, but organ saving
- A drip, pain relief and anti-sickness medicine
- Rapid clinical assessment
- Urology consultation, in parallel
- Urgent Doppler ultrasound
- Nothing by mouth, in preparation for surgery
- Manual detorsion, in suitable cases
- Straight to emergency surgery
- Anaesthetic assessment
Manual Detorsion
It can be tried before surgery or when surgery is delayed. The classic technique turns the testicle from the midline outwards, like opening a book: the right testicle clockwise and the left anticlockwise, as seen by the examiner.
Key Points
- Adequate pain relief or sedation is given
- Successful detorsion brings sudden relief of pain
- Failure or only partial relief means immediate surgery
- Even after success, surgical orchiopexy is mandatory
- Turning in the wrong direction can cause greater damage
Surgical Detorsion and Orchiopexy
This is the definitive treatment for testicular torsion, performed under general or spinal anaesthesia.
The Steps of Surgery
- An incision in the midline or across the scrotum
- The testicle is delivered from the tunica vaginalis
- The twist is undone by turning the testicle back
- Return of blood flow is watched for 15 to 20 minutes
- Warm gauze is applied
- Viability is judged by colour and firmness
- Viable: orchiopexy, stitching the testicle to the scrotum at 2 to 3 points
- Not viable: orchiectomy, removal of the testicle
- Prophylactic orchiopexy of the other testicle
- The scrotum is closed; a drain is rarely needed
Operation Time and Hospital Stay
- The operation takes 45 to 90 minutes
- Usually same day discharge or one night in hospital
- One to two weeks of rest at home
Fixing the Other Testicle
Because the bell-clapper deformity is usually present on both sides, a prophylactic orchiopexy of the other testicle in the same operation is the standard approach.
Why It Is Done
- The other testicle carries a high lifetime risk of torsion
- The same anatomical anomaly is usually on both sides
- A second torsion could mean losing the second testicle
- Doing both in one operation carries less risk
Orchiectomy (Losing the Testicle)
If blood flow does not return or the tissue is irreversibly damaged, removing the testicle (orchiectomy) is unavoidable.
When It Is Needed
- Torsion lasting more than 24 hours
- A testicle that stays dark blue or black during surgery
- No return of blood flow after detorsion
- Dead (necrotic) testicular tissue
Afterwards
- The other testicle is always fixed
- Information and psychological support for the patient
- An optional silicone testicular prosthesis, 3 to 6 months later
- A yearly urology check
Recovery After Surgery
- First 24 to 48 hours: moderate pain, eased by tablets
- Days 2 to 5: mild swelling, bruising and tenderness
- 1 week: back to school or work in most cases
- Weeks 2 to 4: no sex, light activity only
- 6 weeks: full physical activity and sport
Aftercare
- Scrotal support for 2 weeks
- Ice packs for the first 48 hours
- No heavy lifting or straining for 4 weeks
- Check ups at week 1 and week 4
Testicular Torsion Treatment Prices in Turkey
An acute torsion is always treated at the nearest emergency department, wherever you are. Men travel to Turkey for the planned procedures: fixing both testicles after intermittent torsion, or a testicular prosthesis after a testicle has been lost. The table compares typical prices.
| Procedure | Turkey Best value | United States | United Kingdom | Europe | UAE |
|---|---|---|---|---|---|
| Scrotal Doppler ultrasound | $100 to $250 | $400 to $1,200 | £250 to £500 | €150 to €400 | $300 to $700 |
| Emergency detorsion and orchiopexy | $2,500 to $4,500 | $12,000 to $25,000 | £4,500 to £7,500 | €4,500 to €8,500 | $6,000 to $12,000 |
| Planned orchiopexy, both sides | $2,000 to $3,500 | $8,000 to $15,000 | £3,500 to £6,000 | €3,500 to €6,500 | $5,000 to $9,000 |
| Orchiectomy with fixation of the other testicle | $2,500 to $4,500 | $10,000 to $20,000 | £4,500 to £7,000 | €4,500 to €8,000 | $6,000 to $11,000 |
| Testicular prosthesis | $2,500 to $4,000 | $8,000 to $15,000 | £4,000 to £6,500 | €4,000 to €7,000 | $5,000 to $9,000 |
Prices in the Turkey column are typical Istanbul package prices and usually include surgery, anaesthesia, hospital stay and tests. Prices for other countries are typical private, self pay ranges. For a personal quote, contact the clinic with your scans and history.
Fertility and Hormones
Long term effects after torsion on one side:
- Most men with one testicle keep normal sperm production and testosterone levels
- Fertility is preserved when treatment comes within 6 hours
- After late treatment, an effect on the other testicle (sympathetic orchiopathy) is debated
- A shrunken testicle no longer contributes hormones
- If a semen analysis shows no sperm, micro-TESE can still find sperm in the testicle for IVF
Torsion in Newborns
Newborn torsion (the extravaginal type) behaves differently from the adolescent form. It happens before or during birth.
Clinical Features
- The testicle has usually been lost by the time it is found
- A hard, painless, dark coloured testicle
- Signs of a dead (necrotic) testicle
- It affects about 1 in 7,500 newborns
How It Is Managed
- Some centres operate quickly, fixing the other testicle too
- Others watch closely, as the affected testicle is not viable
- Fixing the other testicle is increasingly accepted as standard
- A paediatric urology opinion is essential, as in other childhood conditions such as vesicoureteral reflux
Intermittent (Recurring) Torsion
Short attacks that untwist on their own. Without treatment it can progress to a lasting torsion.
Symptoms
- Recurring short attacks of scrotal pain, lasting minutes
- Relief on its own
- A feeling of the testicle turning during an attack
- Often at night or during exercise
Treatment
- A planned orchiopexy as soon as the diagnosis is made
- Both sides are fixed, as the other testicle is also at risk
- No emergency admission is needed
- Delay brings a high risk of lasting torsion
Complications
Early
- Wound infection (1 to 2 percent)
- Scrotal haematoma (2 to 4 percent)
- Pain and tenderness
Late
- Shrinkage of the testicle after late treatment
- Sympathetic orchiopathy of the other testicle (debated)
- Recurrence, if orchiopexy is not done
- Psychological impact, especially after losing a testicle
- Risk of infertility in severe cases
- Hormonal changes (rare)