Distortion trauma of the ankle (sprain injury)

What is sprain trauma?

A sprain trauma describes a ligament overstretching or injury caused by sudden twisting of the ankle joint. A typical twist is inward twisting (supination), in which the lateral ligaments are overloaded. Depending on the force and direction of the impact, the spectrum ranges from a stretch (compression) to a complete ligament tear. Swelling, bruising and pain on exertion often occur.

Anatomy of the ankle joint briefly explained

The ankle joint is made up of the upper (OSG) and lower ankle joint (USG). In addition to the muscles and capsule, the following ligament structures in particular ensure stability:

• Lateral (outer): Anterior talofibular ligament (ATFL), calcaneofibular ligament (CFL), posterior talofibular ligament (PTFL) - the ATFL is most commonly affected.
• Medial (inside): Delta ligament (ligamentum deltoideum).
• Syndesmosis (connection between tibia and fibula) stabilizes the ankle joint fork; relevant for higher-grade trauma.

In classic twist trauma, the ATFL and, depending on the severity, also the CFL are particularly affected. The assessment of stability and accompanying injuries (e.g. bony avulsions, osteochondral lesions on the talus) is crucial for therapy planning.

Typical symptoms

• Acute pain on the outside of the ankle, often after twisting the ankle
• Rapid swelling, hematoma (bruise)
• Pain on exertion, limping, possibly inability to perform due to pain
• Feeling of instability or “breaking away”
• Pain when moving and pressure pain over the ligament attachments

Warning signs of accompanying injuries are severe deformation, pronounced pain at rest, sensory disturbances, misalignment or an open skin defect.

Causes and risk factors

• Sports with quick changes of direction/jumps (football, basketball, volleyball, trail running)
• Unsuitable footwear or uneven surfaces
• Previous sprain injuries and inadequately rehabilitated instability
• Muscular imbalances and reduced proprioception (deep sensitivity)
• Hyperlaxity (hypermobile ligaments)
• Fatigue, warm-up deficit, lack of neuromuscular training

Severity of ligament injury

• Grade I: Ligament stretch/microfiber tears, slight swelling, low pressure tolerance, hardly any instability.
• Grade II: Partial tear of one or more ligaments, significant swelling/hematoma, painful strain, possibly feeling of instability.
• Grade III: Complete rupture of one or more ligaments, significant swelling/hematoma, relevant mechanical instability.
• Special case: Syndesmosis injury - despite inconspicuous findings, can cause relevant instability of the ankle joint fork.

Diagnostics: safe, structured, close to guidelines

Diagnostics combines anamnesis, clinical examination and – if necessary – imaging. The aim is to reliably differentiate between distortion, ligament tears, bony injuries and syndesmosis damage.

• Clinic: Inspection, palpation of the ligament attachments, functional and stability tests (anterior drawer test, talar tilt). Assessment of axis, gait and pain location.
• Ottawa Ankle Rules: X-ray indication for bony tenderness on the malleolus, talus/navicular bone/base metatarsal V or inability to walk 4 steps immediately after trauma and in the office.
• Sonography: assessment of ligament continuity and hematomas, dynamic tests.
• X-ray: Rule out fractures, if necessary, take a photo under weight.
• MRI: If symptoms persist, suspected high-grade ligament injuries/syndesmosis, osteochondral lesions or unclear findings.
• CT: For complex fractures or for preoperative planning.

Differential diagnoses: contusion, fracture, osteochondral talar lesion, peroneal tendon lesion, impingement, rarely complex regional pain syndrome (CRPS).

First aid after twisting an ankle

In the first 48-72 hours, a structured approach helps to limit swelling and pain. PECH and POLICE have proven themselves.

• P (Break) / OL (Optimal Loading): Load dosed and pain-adapted, no forced immobilization.
• E (ice): Cool at intervals (e.g. 10-15 minutes), pay attention to skin protection.
• C (Compression): Elastic bandage or ankle orthosis to reduce swelling.
• H (elevation): Above heart level several times a day.
• Painkillers considered: Short-term e.g. E.g. paracetamol or NSAIDs – weigh up individually and note contraindications.

Avoid: Alcohol, unnecessary heat, early aggressive stretching or stressful exercise tests in the acute phase.

Conservative treatment: standard of first choice

The vast majority of sprain traumas heal with functional, conservative therapy. The treatment plan depends on the severity, activity level and accompanying factors.

• Orthoses/tape: Studies show advantages of functional treatment compared to prolonged immobilization. Semirigid orthoses can reduce recurrences.
• Physiotherapy: Manual techniques, lymphatic drainage, progressive strengthening, neuromuscular training and running/landing mechanics.
• Everyday life: Early, pain-adapted full weight bearing is usually possible – safely guided by an orthosis/tape.
• Ability to work: Office work is often possible after a few days; standing/physical work adapted and gradually.

Regenerative procedures: If symptoms persist despite therapy in accordance with guidelines, additional treatment (e.g. PRP injection for partial tears/chronic ligament insufficiency) can be considered in individual cases. The study situation is heterogeneous; Benefits and limitations are explained individually. There is no standard indication.

When does an operation make sense?

Surgery is rarely necessary. It is considered if there is relevant mechanical instability, concomitant injuries or the failure of consistent conservative therapy.

• Complete ruptures with significant instability and functional deficit despite adequate conservative treatment
• Syndesmosis injury with instability
• Bony avulsions with displacement, osteochondral lesions
• Chronic lateral ligament instability with repeated twisting events
• Competitive athlete with persistent instability despite structured rehabilitation

Possible procedures: band suturing/refixation (e.g. Broström technique, possibly with augmentation), arthroscopic treatment of osteochondral lesions, stabilization of the syndesmosis. Every operation requires structured follow-up treatment with a protective phase, gradual mobilization and targeted rehabilitation.

Healing process and prognosis

• Grade I: Often capable of everyday wear and tear after 1-2 weeks, sporting activities possible after 2-4 weeks.
• Grade II: Everyday resilience often after 2-4 weeks, return to sport from 4-8 weeks, depending on the sport and test criteria.
• Grade III: Longer rehabilitation (8-12+ weeks), gradual return to sport activity.

More important than rigid time requirements are criteria: pain-free, full mobility, comparable strength/balance to the opposite side, secure one-leg stance, functional tests (e.g. Y-balance, one-leg hop tests) passed.

Possible complications: chronic instability, repeated sprains, impingement, peroneal tendon problems, osteochondral talar lesions, rarely CRPS. Consistent rehab reduces the risk.

Prevention and recurrence prevention

• Regular sensorimotor training (balance board, one-legged stand, reactive exercises)
• Strengthening the foot and peroneal muscles, core stability
• Sport-specific technique training and clean landing mechanics
• Appropriate footwear; for high-risk sports, temporary tape/orthosis
• Warm up and progressively increase the load
• Treatment of accompanying factors (leg axes, mobility deficits, ankle mobility)

Special patient groups

• Athletes: early functional, sport-specific rehabilitation, clear return-to-play criteria; Temporary use of tape/orthosis to prevent recurrence.
• Children/Adolescents: Often apophyseal/bony avulsions instead of ligament tears; careful imaging and age-appropriate therapy.
• Older people: Be careful with osteoporosis/multimorbidity; Fall prevention, if necessary longer protective phase and close monitoring.

When should you see a doctor?

• Severe swelling/hematoma, severe pain or visible deformity
• Inability to walk 4 steps
• Numbness, tingling, paleness or feeling of cold in the foot
• Open injuries or suspected fracture
• Symptoms that do not improve after 3-5 days despite rest
• Repeated twisting events or feeling of instability

In acute emergencies, please contact the emergency services or the nearest emergency room.

Orthopedic care in Hamburg-Winterhude

In our practice at Dorotheenstraße 48, 22301 Hamburg, you will receive a structured examination, timely imaging if necessary and a clear, individually tailored treatment plan with a conservative focus. We coordinate physiotherapy, orthosis care and subsequent follow-up checks and advise you on how to safely return to everyday life, work and sport.

Common mistakes – and how to avoid them

• Complete immobilization for too long instead of early functional mobilization
• Starting sports too early without fulfilling the criteria (mobility, strength, balance)
• Avoid proprioception training after the pain has subsided
• Sole trust in freedom from pain instead of structured tests
• Ignoring repeated twisting events – risk of chronic instability