Ankle fracture (fibula, tibia)

Anatomy: What belongs to the ankle joint bifurcation?

The upper ankle joint (OSG) is formed by the ankle joint fork of the tibia and fibula. Between the tibia and fibula, the syndesmosis (ligament complex) stabilizes the fork in which the talus (ankle bone) is guided like a wedge.

• Tibia: medial malleolus and posterior border (posterior malleolus)
• Fibula: lateral malleolus
• Syndesmosis: anterior/posterior tibiofibular ligament, interosseous membrane
• Talus: joint partner in the OSG; Shape affects stability
• Associated ligaments: deltoid complex medially, outer ligaments laterally

What is an ankle fracture? Types and severities

An ankle fracture refers to fractures of the ankle region. Depending on the affected bone, displacement (dislocation), joint involvement and ligament status, a distinction is made between stable and unstable injuries.

• Fracture of the lateral malleolus (fibula): most common form
• Medial ankle (tibia) fracture: often associated with ligament injury
• Bimalleolar fracture: Inner and outer malleolus affected
• Trimalleolar fracture: additional posterior malleolus (posterior tibial edge portion)
• Maisonneuve injury: high fibular fracture with syndesmosis damage
• Open fractures: skin separation – acute emergency
• Accompanying syndesmotic lesion: crucial for stability and therapy

Causes and accident mechanisms

In most cases there is a twisting trauma with a rotational component. The exact pattern helps to correctly assess the severity.

• Supination-external rotation (common): typical lateral malleolus fracture, possibly syndesmosis
• Pronation-external rotation: frequent medial ligament/medial malleolar involvement
• Fall from height/traffic accident: complex, trimalleolar or open injuries
• Sports (football, trail running, basketball): Torsion under load
• Osteoporosis: Fractures possible with less force

Symptoms

The symptoms usually begin immediately after the trauma. A lack of pain does not definitely rule out a fracture.

• Acute pain in the ankle area
• Swelling, bruising, tension of the skin
• Inability to bear weight, limping or complete inability to walk
• Visible misalignment or bony step
• Crepitation (rubbing noise) when moving
• Numbness/tingling (indication of nerve irritation)
• Open wound with bone contact: emergency

Diagnostics in Hamburg: step by step

A structured clarification takes place in our practice in Hamburg-Winterhude. What is important is the course of the accident, clinical stability testing and the correct imaging. In the case of complex injuries, we supplement the diagnostics and, if necessary, coordinate further clarification within the network.

Classification and stability

The classification helps to make therapy paths comparable. In practice, the question is “stable or unstable?” crucial.

• Weber classification: A (below syndesmosis), B (at level), C (above syndesmosis) – indication of ligament involvement.
• Lye-Hansen (mechanistic): e.g. B. Supination-external rotation, pronation-external rotation.
• OTA/AO classification: differentiated pattern coding.
• Stability: intact syndesmosis and medial ligament indicate stability; medial ligament/median malleolar damage or dislocation for instability.
• Open vs. closed: open = risk of infection, immediate emergency surgical care.

Conservative treatment

Conservative treatment has priority if the fracture is stable and there is no relevant deformity. The aim is pain-adapted healing with early functional mobilization to avoid stiffness.

• Indications: stable Weber A fractures, undisplaced lateral/medial malleolus fractures without medial instability, small posterior fragments without step formation.
• Immobilization: functional orthosis/walker or lower leg cast depending on the soft tissue situation, usually 4–6 weeks.
• Loading: initially partial weight bearing (e.g. 10–20 kg) with forearm crutches; gradual increase according to the clinical-radiological course.
• Pain and swelling management: elevation, cooling, lymphatic drainage; Analgesics as needed and tolerated.
• Thrombosis prophylaxis: individual risk assessment; often indicated in cases of immobilization.
• Physiotherapy: early range of motion (dorsiflexion/plantar flexion), isometric muscle building, gait training.
• Checks: clinical and radiographic to ensure position and healing (e.g. after 1-2, 4-6 weeks).

Surgical treatment

Surgery is recommended if the fracture is unstable, misaligned, or the articular surface is affected. In our practice, we provide independent advice, organize care in cooperating clinics in a timely manner if surgery is indicated, and provide follow-up care.

• Indications: Dislocation, bimalleolar/trimalleolar fractures, medial ligament/median malleolar damage with instability, syndesmosis lesion, open fracture, impending skin complication.
• Procedure: Fibula – plate/screw osteosynthesis; Inner ankle – tension screws/tension straps; Posterior malleolus – screws/plates depending on fragment size and displacement.
• Syndesmosis: temporary adjusting screw or flexible ligament reconstruction (e.g. suture system), depending on injury and activity level.
• Timing: If there is significant soft tissue swelling, often interim immobilization until the swelling subsides; open fractures as an emergency.
• Follow-up treatment: pain-adapted mobilization, initially often partial weight-bearing; early functional physiotherapy; Follow-up checks and, if necessary, later screw removal according to individual indications.

Rehabilitation and healing process

Healing time varies depending on fracture pattern, stability, age and comorbidities. A structured rehabilitation plan supports a safe return to everyday life and sport.

• Ability to work: dependent on activity; Office often after 2-6 weeks, physical work later.
• Driving a car: only when you are safely fully loaded and able to react without pain, no immobilization - legal responsibility lies with the patient.
• Metal removal: only in case of discomfort, skin irritation, screws over syndesmosis or special requirements.
• Scar and skin care: mobilization of the scar after wound healing; If there is a tendency to swell, consider compression.

Possible complications

Complications are rare but possible. Close follow-up care serves for early detection and countermeasures.

• Secondary dislocation/malunion (malunion) with axial deviation
• Pseudarthrosis (lack of bony healing)
• Post-traumatic osteoarthritis of the OSG
• Syndesmotic insufficiency, chronic instability, impingement
• Wound healing disorder/infection (during surgery)
• Thrombosis/embolism during immobilization
• Complex regional pain syndrome (CRPS)
• Nerve or vascular injury
• Pressure damage to the skin with severe swelling

When is it an emergency?

• Open fracture (visible bone/wound)
• Severe misalignment, impending restriction of blood flow to the skin
• Numbness, paleness, coldness of the foot (circulation or nerve problem)
• Insatiable pain despite immobilization
• Increasing tension pain in the lower leg (suspected compartment syndrome)

In these situations, please call the emergency services (112) or go to an emergency room immediately.

First aid and self-management

Until the problem is clarified, simple measures can help prevent further damage.

• PECH rule: break, ice (short-term, skin protection), compression, elevation.
• Don't strain; Use support/rail if available.
• Take off shoes/tight socks early to avoid pressure.
• No independent attempts at reduction.
• Stay fasting (no large meals) before possible surgery if medically acceptable.

Prevention and reducing risk factors

Not all injuries are preventable, but you can control the risk.

• Balance and proprioception training, especially after ligament injuries.
• Good footwear with sufficient stability for the surface.
• Sport-specific technical training and warm-up.
• Osteoporosis screening and treatment as recommended.
• Vitamin D/calcium as needed and in the laboratory, not across the board.
• Reduce tripping hazards in everyday life, pay attention to workplace safety.

Special situations

Some patient groups require adapted diagnostics and therapy.

• Children/young people: pay attention to growth plates; often different fracture patterns and healing potential.
• Older patients: Consider osteoporosis, fall prevention and slower rehabilitation.
• Diabetes/smoking: increased risk of wound healing problems.
• Competitive sports: early functional, closely controlled return plans.
• Pregnancy/anticoagulation: Consider imaging and thrombosis prophylaxis individually.

What you can expect in our practice in Hamburg

We work in a guideline-oriented, conservatively focused manner and with clear indications for surgical measures. Transparent information and a realistic prognosis are important to us.

• Careful examination, X-rays organized on site or promptly; CT/MRI if necessary.
• Individual decision conservative vs. surgical based on stability criteria.
• Orthosis and aid adjustment, walking schools, physiotherapy control.
• Coordination of an operation in the clinic network if there is a clear indication; Outpatient and inpatient options are explained.
• Structured aftercare plans with milestones, including thrombosis and pain management.

Forecast: What can be realistically expected?

Most ankle fractures heal with good results if stability and joint position are restored and adequate rehabilitation occurs. The individual prognosis depends on several factors.

• Fracture type and joint involvement (bimalleolar/trimalleolar: longer recovery)
• Syndesmotic integrity and ligament healing
• Soft tissue situation and time of care
• Age, bone quality, comorbidities
• Adherence to therapy, adequate physiotherapy and load control

Organization, sick note and second opinion

We provide support with medical certificates, certificates of incapacity for work and the organization of further treatment. An independent second opinion makes sense before planned operations and is supported by many health insurance companies.

• Second opinion for an indication for surgery: structured risk-benefit assessment.
• Inability to work depending on activity and course of treatment.
• Coverage of costs: dependent on GKV/PKV; Self-pay services only after informed consent.