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[Use of a fibula bone span in alveolar ridge augmentation. Outcome after 2 years].

A preliminary report presenting the results of fibular strut grafting in the severely resorbed mandibular and maxillary region is presented. Thirteen patients were treated due to severe resorption of alveolar and basilar bone of 49 segments of the mandible and the maxilla. Two patients additionally had pathological fractures of the mandible. In 10 cases the strut graft was harvested by means of a new minimally invasive technique. After modelling the fibular bone it was fixed to the recipient site by miniscrews or implants. After a mean follow-up period of 20 months (max. 31, min. 11 months) a retrospective analysis of clinical and radiological findings was carried out. It showed that a mean augmentation of 16 mm was achieved. Compared to other studies the fibular strut graft was resorbed less, and due to the primary stability it could be used for the treatment of fractures of the mandible. No more than natural resorption was observed when the patients received their prostheses fixed to dental implants.

Adult↗

[A vascular pedicled duplicated fibula transplant for treatment of lumbar instability following tuberculous spondylodiscitis].

Operative treatment of tuberculous spondylodiscitis is still an important part of the treatment for lumbar spine instability. We report on a patient who suffered an extensive relapse with microbiological confirmation of tuberculous spondylodiscitis following operative spinal treatment for unspecific spondylodiscitis. X-Ray examination showed development of pronounced lumbar instability, which was first treated with the aid of an external fixateur and later by means of a doubled fibular bone graft with a vascularised stem with no dorsal instrumentation, which led to bony consolidation.

Aged↗

[Possible nerve injuries in ankle dislocations. Trimalleolar fracture including the proximal fibula].

We present a patient with an exceptional fracture type--a Maisonneuve fracture associated with a lateral ankle fracture--and the therapy of this injury. The Maisonneuve fracture consists of a proximal fibular fracture which is associated with failure of the deltoid ligament or medial malleolus and diastasis of the distal tibiofibular syndesmosis. Diverse nerves of the lower leg can be affected by severe trauma as well as by fracture-associated complications or an operation. Fracture fragments, an excessive distension caused by the trauma, or a fracture-associated hematoma can cause injury to the deep peroneal nerve or the branches of the superficial peroneal nerve at the level of the ankle. We want to point out the possibility of nerve lesions of the lower leg associated with this complex fracture. Additionally the operative access to the ankle in this context is discussed.

Ankle Injuries↗

[Basic principles and surgical technique of tibio-fibula-plasty in cartilage-bone transplantation].

BACKGROUND: Within the last few years autologous cartilage-bone-grafting is becoming an established standardized procedure in joint surgery. One significant disadvantage of this technique is the harvesting of the bone plugs from the weight-bearing area of the knee joint. PURPOSE: The tibiofibular articulation is located close to the knee joint that is operated on. This articulation is covered with cartilage. The purpose of this study was to evaluate the question, whether this joint is suitable as a donor site for bone-cartilage transplants. MATERIAL AND METHODS: Favourable approaches and committing of anatomical landmarks were investigated on 44 fixed tibiofibular joints. In knee extension, the shortest distance between the joint cleft and common fibular nerve was measured. The cartilage thickness and histology of both the fibular and tibial joint surface were documented. The developed surgical approach was evaluated in patients. RESULTS: Histological and immunohistochemical examination showed hyaline cartilage and type II collagen. The average cartilage thickness was 1.9 +/- 0.29 mm (minimum: 1.5 mm; maximum: 2.6 mm). The peroneal nerve showed an average distance to the tibiofibular joint of 24 mm (minimum: 12 mm; maximum: 30 mm). Different surgical procedures are possible and clinical relevant. CLINICAL RELEVANCE: The tibiofibular joint contains cartilage, which may be a reasonable donor site even for the elderly patient. Harvesting the graft from this area may avoid iatrogenic damaging of intraarticular weight bearing cartilage of the knee joint.

Aged↗

[Experiences with vascular pedicled fibula in reconstruction of osseous defects in primary malignant bone tumors].

To bridge large bone defects after resection of primary malignant bone tumors, an autologous free vascularized fibular graft was used in 31 patients (15 x upper limb, 16 x lower limb). The median bone defect measured 16 cm (7-29.5 cm). At the lower extremity the vascularized fibular transplant was reinforced with an allograft and different osteosyntheses. At the upper limb stabilization of the transplant was obtained exclusively by plate osteosynthesis or condylar plate. Applications and the authors' experiences are described and discussed in terms of clinical outcome, graft union, functional outcome, and complications for each localization. After a median of 48 months, ten complications at the upper limb and eight complications at the lower limb, respectively, were seen requiring secondary surgical revision. Major complications such as perioperative deaths or secondary amputations were not observed. Functional evaluation showed better results for the lower than for the upper extremity, due mainly to en bloc resection of proportionally large amounts of soft tissues around the shoulder girdle for local tumor control. Despite the demanding operative procedure and a large number of controllable complications, the good functional outcome and high patient satisfaction indicate that the free vascularized fibular graft is an option for limb-sparing surgery of primary malignant bone tumors.

Adolescent↗

Reconstruction of the distal radius by fibula following excision of giant cell tumor.

Thirty giant cell tumors of the distal radius were excised and reconstructed using a nonvascular fibular osteoarticular autograft. Four different surgical techniques for stabilization were used. There were ten recurrences, which could not be correlated with Campanacci's radiological or Jaffe's histological grading. Twenty cases without recurrence were followed up over 1.5-25.5 (average 8.5) years. Average time for incorporation of the graft was 5.2 months. The surgical technique using a radiofibular plate and K wire through the wrist had a low nonunion rate, no graft related complications, good range of movement, and good hand functions.

Adult↗

Preadolescent presentation of a lumbar chordoma: results of vertebrectomy and fibula strut graft reconstruction at 8 years.

Chordoma is a tumour of notochordal origin which usually involves the sacrum or skull base presenting in adulthood. Chordoma in a mobile spinal segment is infrequent and the authors report an extremely rare presentation of L3 chordoma in a child aged 7 years. Although a benign tumour, mobile segment chordoma is more locally aggressive, more likely to metastasise and has a poorer 5 year survival than sacral and clival lesions. Wide surgical excision and reconstruction is the treatment of choice in vertebral chordoma. This case was treated with staged vertebrectomy and fibular strut graft reconstruction and the results of clinical and radiological follow up at 8 years are presented.

Child↗

[Value of color-coded duplex sonography in preoperative visualization of lower leg arteries for microsurgical fibula transfer].

BACKGROUND: In patients being considered for a microsurgical fibular transfer, thorough examination of the vascular supply to the lower leg is indisputably necessary. The aim of this study was to evaluate the validity of color-coded duplex sonography (CCDS) in the assessment of the arteries of the lower leg. PATIENTS AND METHODS: In 13 patients needing bony reconstruction of the jaw 22 legs were examined using CCDS. The three arteries of the lower leg were visualized and traced from the ankle to the popliteal fossa. At every arterial segment Doppler sonographic examination was also performed. All 13 patients underwent digital subtraction arteriography (DSA) of the lower extremities, additionally. RESULTS: We were able to visualize and to assess all but one of the arteries using CCDS. In 13 extremities of 9 patients CCDS exhibited a normal vascular supply to the lower leg provided by three regular arteries. DSA confirmed this and the patients underwent fibular transfer. In the other 4 patients a regular vascular situation could not be shown by CCDS because of nonvisualization of arterial segments or pathological findings. Two of these patients received alternative bony transplants. In the remaining two patients angiography exhibited one leg to have a normal three vessel supply, respectively. Fibular transplants could be raised from this leg. In all patients CCDS was able to localize between 3 and 7 perforators branching off the peroneal artery. Their position determined the placement of the skin paddle to be raised with the bone. Further advantages of CCDS were the universal applicability to all patients and the possibility of performing it at our own department. The time required for the examination and the necessity of having adequate technical equipment were the disadvantages. CONCLUSION: In patients being considered for a microsurgical fibular transplantation, we recommend CCDS of the lower leg as a screening tool for the vascular supply of the lower leg. DSA and MRA are predominantly advocated for those patients, in whom CCDS reveals pathological or uncertain findings.

Adult↗