Nonunion (Pseudarthrosis) Treatment in Germany

Nonunion (pseudarthrosis) is a failure of fracture healing where fibrous or cartilaginous tissue forms between bone fragments instead of bone callus. Statistically, 5–10% of all fractures fail to heal in expected timeframes. The most vulnerable bones include the tibia, scaphoid, and femoral neck. Treatment in Germany includes innovative MIBRAR® therapy for osteogenesis stimulation and when necessary — surgical revision with bone grafting.

What is Nonunion

A fracture is considered nonunited when after 6–9 months (depending on location) there are no radiological or clinical signs of healing. Between bone fragments, fibrous or cartilaginous tissue forms instead of bone — a "false joint." Delayed union means the fracture hasn't healed in expected timeframes but the healing process continues, warranting osteogenesis stimulation. True nonunion means the healing process has stopped and will not proceed without intervention.

Causes

Mechanical factors include insufficient fixation (fragment mobility), large bone defects (>2 cm), and soft tissue interposition between fragments. Biological factors involve disrupted blood supply (periosteal damage during surgery), infection (osteomyelitis), and osteonecrosis. Patient-dependent factors include smoking (doubles nonunion risk by reducing bone blood supply), diabetes, NSAID/corticosteroid use, vitamin D deficiency, osteoporosis, and alcohol abuse. Location-specific risks are highest at the proximal scaphoid pole, femoral neck, and distal tibial third — zones with minimal blood supply.

Classification

Hypertrophic nonunion ("elephant foot") features abundant callus without bridging due to mobility — the cause is mechanical (insufficient fixation) while biology is intact, requiring stable fixation for healing. Atrophic nonunion shows no callus with "rounded" fragment ends due to disrupted blood supply and biological insufficiency — requiring osteogenesis stimulation (MIBRAR®) plus bone grafting plus stable fixation. Infected nonunion on a background of osteomyelitis is the most complex type requiring infection clearance then reconstruction. Oligotrophic nonunion is intermediate with minimal callus but preserved blood supply — responds well to MIBRAR®.

Symptoms

Pain at the fracture site during loading persisting months after injury. Pathological mobility at the fracture site. Deformity including angular, rotational, and limb shortening. Functional impairment with limping and inability to fully bear weight. Draining sinus in infected nonunion.

Diagnosis

Radiography shows absent bony bridging at 6+ months, sclerotic fragment ends, and presence or absence of callus with serial comparison. CT details the gap between fragments, bone defect assessment, and surgical planning. MRI evaluates fragment viability (osteonecrosis?) and identifies occult infection. PET/CT is used when infected nonunion is suspected. Laboratory tests include ESR, CRP (infection exclusion), vitamin D, calcium, and thyroid hormones. Biopsy with microbiological examination is performed when infection is suspected.

MIBRAR® Therapy

Nonunion (Pseudoarthrosen) and "non-healing" fractures (Unheilbarkeit der Frakturen) are key indications for MIBRAR® technology, offering a minimally invasive alternative to repeat major surgery.

Using the specially designed MIBRAR® microperforator (Prof. Babayan's development), targeted microperforations of sclerotic bone fragment ends create a "fresh wound surface" triggering natural osteogenesis. ARC containing mesenchymal stem cells, growth factors, and anti-inflammatory factors is transplanted directly into the nonunion zone. Stem cells differentiate into osteoblasts and initiate bone tissue formation.

MIBRAR® indications for nonunion include oligotrophic and atrophic nonunion (biological stimulation), delayed union (early intervention before true nonunion forms), augmentation of surgical revision (enhanced osteogenesis), and post-surgical "non-healing" fractures. The procedure is outpatient, without anesthesia, under fluoroscopic or Sono Control Arm™ guidance. CT follow-up at 3–6 months confirms results.

Surgical Treatment

Re-osteosynthesis replaces the fixation device with a more stable one (e.g., plate → intramedullary nail with dynamization) — for hypertrophic types, stable fixation alone may suffice. Bone grafting with iliac crest autograft (containing stem cells + growth factors + bone matrix) is the gold standard for atrophic types. The Masquelet technique is a two-stage approach: 1) debridement + cement spacer (forming an "induced membrane"); 2) at 6–8 weeks: cement removal + autograft filling for defects >3 cm. Bone transport (Ilizarov) gradually "grows" bone for large segmental defects. Vascularized bone graft (fibula on a vascular pedicle) addresses avascular nonunion.

Treatment Costs

All treatment prices in Germany.

Advantages of Nonunion Treatment in Germany

Germany offers MIBRAR® therapy for minimally invasive stem cell osteogenesis stimulation, specialized nonunion treatment centers with multidisciplinary teams, a complete arsenal of reconstructive methods (autograft, Masquelet, Ilizarov), precise nonunion cause identification (infection? avascularity? mechanics?), full rehabilitation at world-class clinics, and multilingual assistance. Nonunion is not a life sentence — modern technologies achieve healing even in the most complex cases. Contact us for specialist selection and a treatment program in Germany.