Biomedical subjects

S Clemens

Publications and source records attributed to S Clemens.

60 records · Page 4Linked to original sources

PubMed1984

Ultrasonic findings after treatment of retinal detachment by intravitreal silicone instillation.

Postoperative A- and B-scan ultrasonography in 55 patients with complicated retinal detachment who had undergone pars plana vitrectomy with intravitreal silicone oil tamponade showed that the position of the retina could be demonstrated. The reproducible phenomena in eyes with clear media indicated that the same characteristics could be used for diagnosis in eyes with opacification of the lens or cornea.

Humans↗

PubMed1984

[Echographic findings following intravitreous silicone injections].

In 27 patients treated by silicone injection combined with pars plana vitrectomy various conditions of the retina were demonstrated by echography. As a result of silicone oil instillation the vitreous distance is prolonged and the sound absorption is higher. At the border of the silicone bubble the reflective echos are especially high. From the form of the border echos of the silicone bubble it is possible to determine whether there is a retinal detachment, with or without subretinal silicone. It is shown that the examination results always depend on the position of the patient's head when the silicone bubble does not completely fill the vitreous cavity. The authors have worked out a set of rules which, because of their reproducibility, enable the surgeon to draw diagnostic conclusions in cases of opacity of the anterior segment.

Humans↗

PubMed1983

[Lens holder for vitrectomies in the posterior segment of the eye].

A lens holder for posterior segment vitrectomy is described. Its advantages are: better centering, optional use during surgery, simple handling and optimal exploitation of the prismatic effect for a better view into the periphery.

Humans↗

PubMed1983

[Forceps for non-traumatic extraction of intraocular foreign bodies].

Explore the source record for details and available documents.

Eye Foreign Bodies↗

PubMed1983

[Avoidance of complications during Kimray-Greenfield filter implantation].

In 9 out of 24 cases we experienced complications when implanting the Kimray-Greenfield-Filter. As a result of this the introduction of this filter is now performed by a guide wire. To obtain maximum results the introducer and the filter itself should be improved.

Aged↗

PubMedDate not supplied

[Is the implantation of titanium stems in hip prostheses really obsolete?].

AIM: Due to several bad results of studies, titanium is no longer used as an implant material in cemented total hip arthroplasty. This study attempts figure out by means of a meta-analysis if the material titanium itself was responsible for the bad results of some studies or if specific implant characteristics contributed to implant failure, independent of titanium. METHOD: Studies between 1960 and July 2002 were analysed concerning failure rates of cemented titanium total hip arthroplasties regarding their specific implant characteristics. RESULTS: Specific implant characteristics such as roughness of the surface and geometrical features led to significantly different failure rates. Stems of titanium with a dull surface and a wide proximal geometry could achieve such good results as those of the cobalt-chromium stems published in the study results of Malchau. CONCLUSION: Titanium is justified as a cementable material in total hip arthroplasty. By respecting specific implant characteristics, very good failure rates can be achieved. The high failure rates, published in several studies, are based upon implant characteristics which are not suitable for cementing techniques and not upon the implant material titanium itself.

Arthroplasty, Replacement, Hip↗