PubMed Health⌕ Search

Biomedical subjects

J Lentrodt

Publications and source records attributed to J Lentrodt.

At least 19 recordsLinked to original sources
PubMed2006

[Effects of hyperbaric oxygen therapy (HBO) during treatment of infected free bone transplants. A Case report].

BACKGROUND: Hyperbaric oxygen therapy (HBO) leads to a significant increase of oxygen supply in poorly perfused tissue. Several physiological mechanisms of this treatment modality are suitable for having a positive effect on infected large autologous free bone transplants. CASE REPORT: In a 49-year-old male with a metastasized squamous cell carcinoma of the floor of the mouth radical tumour surgery with subsequent radiation was performed. Nine years later an infected osteoradionecrosis of the mandible emerged which required a continuity-resection with simultaneously performed reconstruction of the mandible using an autologous free transplanted iliac bone graft. Four days post surgery wide intraoral dehiscence with complete denuding of the bone graft occurred. For this reason initiation of an adjuvant hyperbaric oxygen therapy in addition to high dose antibiotic therapy and local wound care. Combined therapy led to granulation tissue on the surface of the transplanted bone with subsequent epithelization. Complete incorporation and conversion of the bone transplant with full rehabilitation concerning function and aesthetics was noted. DISCUSSION: Without HBO treatment the large volume infected autologous free bone transplant would have been lost. Beside other capabilities of HBO the induction of rapid neovascularisation and increasing oxygen diffusion radius are the reasons that the infected transplant was saved. Only under these conditions it was possible to erradicate the bacterial infection effectively with antibiotics.

Bone Plates↗
PubMed2000

[Eyelid replacement-plasty].

After a short description of the history of eyelid reconstruction, the causes of defects are discussed. For the primary and secondary treatment of thermic injuries, a full-skin graft is recommended and the indication of combined skin-cartilage transplants is mentioned. For deep defects, numerous methods of eyelid reconstruction are available. The differentiated indication for manifold initial situations is discussed in detail. The most important techniques are described on the basis of various examples.

Aged↗
PubMed1996

[Late outcome and complications of mandibular compression osteosynthesis with intraoral approach--a 10-year study].

Late results and complications following rigid internal fixation of mandibular fractures-a 10 year survey. From 1984 to 1993 541 fractures of the mandible in 332 patients have been treated by rigid internal fixation with the mandibular compression system (MCS). In 0.8% we saw serious complications like pseudarthrosis or osteomyelitis. In a retrospective study 105 patients with 171 fractures of the mandible could be examined 4.1 years after osteosynthesis. In case of preoperative normesthesia of the inferior alveolar nerve in 74.1% of the fractures nomesthesia was still present, 18.1% of the fractures showed hypesthesia and 4.2% showed complete anesthesia. In case of already preoperatively existent hypesthesia in 81.8% of the fractures normesthesia and in 8.2% hyp- or paresthesia were seen. There were no anesthesias seen in this group. 3.6% of the fractures showed mild occlusal disharmonies.

Adult↗
PubMed1994

[Results and special aspects of secondary microsurgical bone transfer in the area of the facial skull].

Results and significance of secondary reconstruction of mandibular and maxillary defects. The results of 14 patients with 12 mandibular and 2 maxillary defects following tumour surgery with irradiation and/or chemotherapy, osteomyelitis, osteoradionecrosis or trauma, which were reconstructed secondarily, are presented. 12 flaps survived, 1 flap showed a partial and 1 flap a complete necrosis due to venous thrombosis. The major differences of secondary reconstruction of bone defects in the facial skeleton in comparison to primary reconstruction are the scar formation in the defect region and above all the reduced number and quality of recipient vessels in the neck area. The design of the flap should be exactly determined preoperatively. Of great importance is the examination of the recipient vessels in the neck area. Non-invasive methods are preferred.

Bone Transplantation↗
PubMed1992

[The value of 2- and 3-dimensional computed tomography in the diagnosis and classification of midfacial and orbital fractures].

The value of 2D- and 3D-computed assisted tomography in detecting and classifying midfacial fractures and craniofacial deformities acquired by gunshot injuries was assessed in 123 resp. 26 patients and compared with the postoperative results. In a comparative study 37 patients were prospectively examined by pluridirectional tomography. Examinations of a macerated skull were performed to optimize 3D investigation technique. High resolution CT proved to be the most reliable technique in detecting midfacial fractures and associated soft tissue injuries. 3D-imaging of bony surfaces allowed clear demonstration of fraction extent and fragment displacement without offering additional detail information. 3D-based computer-assisted manufacturing of individual models facilitated surgical planning of complex midfacial injuries.

Adolescent↗
PubMed1990

[The microplate system: a new armamentarium for osteosynthesis in the child skull].

In certain ares of the craniofacial skeleton the plate systems commonly used for rigid internal fixation seem to be over-dimensioned. The newly developed Micro System for internal fixation with extremely tiny plates and screws provides a firm three-dimensional fixation of segments with minimal interference with the overlying soft tissues. Fields of application are traumatology and craniofacial surgery in infants, fractures of the naso-ethmoidal region and the orbit, reconstruction of the skull, and the fixation of cartilage and bone grafts.

Adolescent↗