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Biomedical subjects

K Lädrach

Publications and source records attributed to K Lädrach.

23 records · Page 2Linked to original sources
PubMed1984

[Operative procedures in extensive upper and lower jaw cysts].

In this paper we describe the various surgical techniques in the treatment of cysts of the mandible and maxilla. The importance of primary reconstruction of extensive defects is pointed out. We developed a special press for autologous cancellous bone to achieve better osteoplastic results. We describe the advantages of this technique in comparison to the conventional methods.

Adult↗
PubMedDate not supplied

Facial intraosseous arteriovenous malformations: CT and MR features.

OBJECTIVE: To present the CT and MR findings of two patients with maxillofacial intraosseous arteriovenous malformations (AVMs) before and after endovascular therapy. MATERIALS AND METHODS: Two young girls suffering from AVMs in the maxilla and mandibula with spontaneous bleeding in the oral cavity were examined by CT and MR on a 1.5 T GE unit before and after selective endovascular embolization. RESULTS: Computed tomography using a high-resolution algorithm and two-dimensional reconstructions demonstrated the morphology of the bony lesions as well as the regrowth of the bone after successful embolization. Magnetic resonance was the best imaging technique to show vessel structures and the accompanying soft tissue changes. Angiography showed the exact angioarchitecture of the AVM and was essential for therapy planning. CONCLUSION: Because selective endovascular embolization of maxillofacial AVMs is gaining in importance, CT and MRI are, therefore, essential for diagnosis and therapy planning as well as for follow-up imaging.

Arteriovenous Malformations↗
PubMedDate not supplied

[Surgery of the skull base and paranasal sinuses assisted by a computerized navigation system without external orientation support].

OBJECTIVE: To present a new concept in computer-assisted surgery for the base of the skull and paranasal sinuses using a frameless navigation system. METHOD AND MATERIALS: This system is based on computer tomography images, which are displayed online on a workstation monitor. Using specially mounted infrared instruments, the patient's anatomic landmarks are visualized on the monitor. This system does not require invasive markers because it uses a reference system fixed to the patient with a silicone maxillary splint. PATIENTS: From March 1997 to February 1998 we operated on 44 patients with this innovative system. RESULTS: The clinical accuracy of this system was 0.5 to 2 mm for surgery of the anterior skull base and 1 to 2.5 mm for the lateral skull base. There were no intraoperative complications. CONCLUSIONS: This computer-assisted surgical aid made it possible to carry out complex and difficult skull-base surgery with reasonable intraoperative safety. It also allowed development of new minimally invasive surgical approaches.

Chondroma↗