Philipp A. Federspil

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Craniofacial prostheses, also known as epistheses, are artificial substitutes for facial defects. The breakthrough for rehabilitation of facial defects with implant-retained prostheses came with the development of the modern silicones and bone anchorage. Following the discovery of the osseointegration of titanium in the 1950s, dental implants have been made(More)
An ear episthesis is an artificial substitute for the auricle. The term EAR PROSTHESIS is used synonymously. The breakthrough came with the introduction of the modern silicones and their colorings. Although there are still indications for noninvasive methods of retention such as medical adhesives, the best and most reliable method of fixation is by bone(More)
HYPOTHESIS A-mode ultrasound scanning with coded signals allows bone thickness measurements at the site of bone-anchored hearing aid surgery as compared to computed tomographic scanning and mechanical measurements. BACKGROUND Adequate bone thickness is a prerequisite for successful, long-lasting osseointegration of titanium fixtures for bone-anchored(More)
The pharmacokinetics of fosfomycin in the ear and eye fluids and in serum are studied after intramuscular administration of 300 and 600 mg per kg respectively to 11 groups of 7 guniea pigs each. Maximal fosfomycin concentrations in the perilymph and aqueous humour are about 12% of the serum peak concentrations and the aqueous humour concentrations are(More)
An auricular prosthesis is an artificial substitute for the auricle; the term epithesis is used synonymously. A myriad of materials have been used in the long history of anaplastology. However, the breakthrough came with the introduction of modern silicones and their colorings. While there are still indications for noninvasive methods of retention, such as(More)
OBJECTIVE In some surgical specialties (eg, orthopedics), robots are already used in the operating room for bony milling work. Otological surgery and otoneurosurgery may also greatly benefit from the enhanced precision of robotics. STUDY DESIGN Experimental study on robotic milling of oak wood and human temporal bone specimen. METHODS A standard(More)
A New Implant System for Orbital Prosthetic Rehabilitation: "Epiplating Mono" Prosthetic or episthetic rehabilitation of ear, eye and nose are currently most common performed using magnetic fixation. While at the beginning single implants have been used, now-a-days a more extended approach with plate fixation are recommended to enhance the stability of the(More)
OBJECTIVES Polydimethylsiloxane (PDMS) particles are a nonresorbable material that allows for permanent vocal fold augmentation. This study investigated morbidity and voice quality in patients treated for unilateral vocal fold paralysis by injection of PDMS particles. METHODS Fourteen patients who had neurogenic unilateral vocal fold paralysis of(More)
Introduction: Robotic surgery at the lateral skull base must be navigated due to the noble adjacent structures. The accuracy of CT based intraoperative navigation is limited by the resolution of the CT scan itself, but could be substantially improved by using ultrasound scanning. Material and Methods: 24 human skull bone specimen fixed in formaldehyde were(More)