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At least 577 records · Page 32Linked to original sources
PubMed1989

Clip appendectomy.

The clip appendectomy is an alternative to the classical suture appendectomy. The use of a new polymer clip facilitates this technique. During pelvic reconstructive surgery an appendectomy may be indicated when suspected appendiceal pathology (such as endometriosis) could adversely affect the surgical outcome. Clip appendectomy can reduce the operative time without increasing morbidity.

Appendectomy↗
PubMed1989

Biological osteosynthesis in osteochondral lesions of the talus.

Osteochondral lesions of the dome of the talus whether medial or lateral are rare. Surgical treatment is required when there is a loose body, or when the lesion is symptomatic and resistant to nonsurgical treatment. Usually, the degenerated fragment is removed, followed by curettage and multiple perforations of the subchondral bed, but different methods may be used to reinsert the osteocartilaginous fragment. Having been satisfied with our first studies conducted both on animals and man, we began to reinsert the osteochondral fragment by using resorbable means of synthesis. The purpose of this study is to report our experiences with 3 such cases at a minimum follow-up of one year.

Adolescent↗
PubMed1985

[Refixation of osteochondral fragments using absorbable plastic pins].

The authors report on the fixation of cartilage-bone fragments via an (absorbable) PDS rod. The study was conducted with 18 rabbit knee joints. Good healing of the fragments was seen over a period of 10 weeks. In vitro examinations of the rod showed satisfactory tearing and bending strength with only slow deterioration of strength due to hydrolysis. On the basis of these studies the authors believe that the rods are suitable for fixing small fragments in accident surgery. Other fields of application are possible and require to be investigated.

Animals↗
PubMed1987

[Aortic aneurysm. External reinforcement by a resorbable prosthesis].

A case of fusiform aneurysm of the abdominal aorta discovered during a septic procedure is presented. The aneurysm showed signs of impending rupture. The aorta was strengthened by external grafting using resorbable material. The patient died two months later of his underlying disease. The histology of the aorta and surrounding tissue is described. The repair proved to be satisfactory.

Aged↗
PubMed1985

[Comparison of the physical parameters and handling properties of short-duration and middle-duration absorbable suture materials].

In recent years the structure and coating of rapidly absorbable suture materials (RAS) have been changed: Dexon S----Dexon plus, Vicryl III----Vicryl IV. Medium fast absorbable sutures (MAS) have been introduced: Maxon and PDS. Being important clinical parameters, the knotting qualities were investigated, for instance knot holding capacity in dry and in NaCl or blood incubated sutures. The newest generations of RAS require more complicated configurations of knots than the initial products. After incubation in blood the knotting qualities improved only with Dexon plus.

Absorption↗
PubMed1986

[Absorbable material in surgery].

Synthetic absorbable sutures, copolymers of sugars absorbed slowly by hydrolysis within defined periods of time and well tolerated by tissues, are resistant to infection and in biological fluids. They represent, after 15 years of use, more than 50% of suture material employed in surgery, and although limited for a long time to thread they are now available as trellis, clips, visceral prostheses and staples in all surgical disciplines. Future perspectives are discussed.

Absorption↗
PubMed1986

[Synthetic absorbable PDS explant for the treatment of retinal detachment].

The following article discusses the experimental and clinical reasons for using absorbable synthetic explants in retinal surgery. We have carried out experimental studies with absorbable synthetic explants bandmade from absorbable sewing threads: PG910, PGA and PDS; proving that these explants are well tolerated by the organism. Their reabsorption time is from 45 days using PG910, to 8 months using PDS; these periods are sufficient for proper anatomical healing of the retina to take place. We present 13 cases of extraction of Teflon explants after retinal detachment surgery; in none of these cases did re-detachment of the retina occur. Consequently, this induced us to introduce absorbable synthetic explants into retinal detachment surgery, using absorbable threads, having previously carried out an experimental study on rabbits. We present 10 cases of retinal detachment operated on with PDS from 95 cases operated on using absorbable synthetic explants; 100% anatomical healing of the retina was achieved. We consider this type of explant to be the ideal material for retinal detachment healing, due to the fact that its period reabsorption, being longer than those of the other explants, allows a longer indentation period.

Absorption↗
PubMed1987

Resorbable suture support for ventricular aneurysmectomy.

The edge of tissue left after ventricular aneurysmectomy requires very careful placement and tying of the sutures. The use of Teflon felt as a support appears to redistribute the pressure and thus prevent the sutures from cutting through the vulnerable tissue. In many cases, Teflon felt reinforcement is preferred to direct unsupported closure because of perioperative of immediately postoperative bleeding complications. However, the unavoidable full immobilization of the sutured area, the possible risk of foreign body infection, and the extensive adhesions and calcification in the long term compelled us to search for a better alternative, combining the convenience of both methods and limiting the risks. PDS (polydioxine) resorbable pledgets and strips, provided by Ethicon GmbH, were used as a suture support during the past 2 years for closure of 29 ventricular aneurysmectomies and four ischemic ventricular septal defects, all except one in combination with coronary bypass grafting. The PDS material was easy and efficient to apply and caused no complications during and after the operation. In one case, we had the opportunity to review the supported scar during a second operation for new coronary grafts after 18 months. The formerly feared "linear scar petrification," usual after use of Teflon felt, was absent. The scar was free from difficult adhesions. Our initial experience suggests the further extensive use of this resorbable material as a support for various sutures at risk.

Heart Aneurysm↗
PubMed1988

Effects of bacterial infection on absorbable vascular ligating clips.

Electron microscopic observations of two implanted absorbable clips, Absolok and Lactomer, infected with Escherichia coli and Streptococcus faecalis, were carried out. An overgrowth of bacteria was observed over the entire surface of the clips. The mating surfaces of the Lactomer clips and the locking mechanisms of both types of clip were more heavily infected--that is, provided better support for bacterial growth--than other areas of the clips in the initial postimplantation period. However, with longer periods (up to seven days), the initial bacterial deposits developed into a thick, plaquelike layer. This layer appeared to restrict access to the surfaces such that the infected clips degraded at a much slower rate than did the noninfected clips, particularly Lactomer clips, on which little morphologic change was detectable seven days after implantation.

Animals↗
PubMed1988

[Resorbable suture material in the human skin: tissue reaction and modified suture technic].

Two-stage excision of skin tumors provided an opportunity for histological evaluation of implanted PDS or Vicryl suture material. Our findings showed a weak or absent tissue response to PDS sutures that was detectable for up to 100 days and a moderately pronounced tissue response to Vicryl that, in rare cases, was evident for up to 80 days. The tissue response to both materials depended on the depth of the implanted suture material. A persistent inflammatory reaction was provoked particularly by Vicryl, a polyfilament suture, when it was embedded near the skin surface. Contact between parts of the suture and the skin surface, which is encouraged by the wick effect of the Vicryl suture, frequently led to suture infection. To avoid infections it is important to place the knot of the stich below the dermis, since the suture ends of the knot decrease the surface-suture distance. A more-or-less horizontal, butterfly-shaped interrupted suture that extends upward is recommended to ensure secure placement of the knot at the lower border of the corium.

Foreign-Body Reaction↗