Biomedical subjects
Publications and source records attributed to F Burny.
This clinical study reveals radiomarker uptake in corticocancellous non-vascularized bone grafts as early as 3 days postoperatively. It therefore calls into question whether seventh-postoperative-day bone scintigraphy is a reliable method for determining the viability of vascularized bone grafts.
External fixation is an excellent technique for the osteosynthesis of fractures affecting the upper extremity. The rational use of the technique is based on sound principles of biology and biomechanics. Good pin design and application techniques are among the important factors for successful outcome. These factors are discussed in this article along with the advantages of external fixation.
Small external fixators have been developed for use in the hand and wrist. The main indications are stabilization of open or infected fracture or non-union of the metacarpals and phalanges; length maintenance in segmental bone loss; and distraction-lengthening of the fingers. The device may be used also for articular or periarticular fracture, closed diaphyseal fracture in adults, fracture in children, various arthrodeses, or corrective osteotomies.
The techniques of vascularized transfer of a bone segment, or of revascularization of a conventional bone autograft by a pedicle or a microsurgical muscular flap represent one of the most significant advances made during the last years for the treatment of large bone defects of the tibia with associated skin injury. The authors present their experience with 16 cases, including 5 microsurgical transfers.
External minifixators were used in the treatment of 63 closed diaphyseal metacarpal bone fractures. A simple half-frame configuration was applied in all the cases. Open reduction was performed in 26%. The mean duration of external fixation was 30 days. There were no cases of nonunion. Anatomical reduction was obtained in 86.6% of the cases. There were no cases of reflex sympathetic dystrophy. The general functional results were very good or good in 96.6%. Open reduction did not significantly alter the final results. External minifixation is usually accepted as a treatment of open metacarpal fractures. Because of the excellent results obtained in our series, we believe that the indications of external minifixation could be enlarged to closed metacarpal bone fractures.
Ninety-three patients with acute fractures of the diaphysis of one or both bones of the forearm were treated by a Hoffmann external fixator, using a half-frame configuration. Whenever possible, closed methods of reduction were used. The versatility of the Hoffmann external fixator allows multiple attempts and possible secondary resumption of the reduction. The half-frame configuration is stable enough, allowing the restoration and maintenance of the precise anatomy of the forearm bones and early active postoperative motion. The median length of retention of the external fixator was 13 weeks. Because of the elastic type of fixation, a solid periosteal callus was usually obtained. Non-union occurred in 8.5% of the patients. One refracture at the former fracture site was observed.
This series encompasses thirteen fractures of the mandible treated by external fixation. The indications were five fractures of edentulous mandible, four fractures through missile wounding, and four fractures without soft tissue lesion treated in Africa. Twelve patients were found to show good or excellent results. In our indications, this method is a successful approach to the treatment of the fractured jaw.
An arthroscopic procedure of excision of damaged cartilage and drilling the subchondral bone plate for treatment of chondromalacia patellae is described. Satisfactory results and absence of major complications are reported in a preliminary, short-term series of 24 cases of symptomatic posttraumatic chondromalacia patellae, with a mean follow up of 12 months.
Explore the source record for details and available documents.
We present the case of a young man with 13 cm of bone and soft-tissue loss in the tibia and a severe traction injury of the brachial plexus. A free vascularised composite transfer of the bone and soft tissues of the ulnar side of the forearm was undertaken to reconstruct the defect. Bony union was achieved after a year and was followed by complete functional recovery of the lower limb.
Explore the source record for details and available documents.
The development of microvascular surgery has allowed the transfer of revascularized bone grafts. The surgical techniques of the most useful transfers are explained. The advantages, disadvantages and indications of these procedures, as compared with the other techniques of bone reconstruction, are discussed.
Twenty-four fractures or nonunions of the clavicle were treated by a Hoffmann external fixator, for selected indications. No vascular or pleural complications were observed. All clavicles healed, after a mean duration of 52 days.
Development of microsurgery has involved the use of revascularized bone grafts in maxillo-facial surgery. They are essentially indicated in rebuilding of complex tissues lost including bone. Their utility is well know in maxillofacial surgery, cervico-facial cancerology, ballistics trauma and in the cure of some mandibular osteoradionecrosis. Only scapular and iliac autogenous bone transplants were used by the authors. Following their short experience, they preferred the pediculated iliac transplants on the deep circumflex vessels more easy to handle and more secure. They brought some modifications in the graft technics in order to decrease the functional and the esthetic damages at the donor site: the incisions were parallel to the iliac crest an to the crural arch. The transplant respected the integrity of the antero-superior-iliac-spine and the crural arch. At the receiving site the muscle was left denuded in the oral cavity. The reepithelialization was observed in a short time.
Explore the source record for details and available documents.
A new technique is presented for the treatment of comminuted intraarticular fractures of the base of the thumb metacarpal. A triangular Hoffmann external radius and first- and second-metacarpal fixator is used. The reduction is maintained by prolonged distraction and abduction of the first metacarpal bone. The application of the technique in three cases is reported.
Explore the source record for details and available documents.
Explore the source record for details and available documents.