[Cost analysis of implant-free replacement of anterior cruciate ligament]. / Kostenanalyse für den implantatfreien vorderen Kreuzbandersatz.

Replacement of the anterior cruciate ligament (ACL) is presently routinely carried out with autologous transplantation of the ligamentum patellae (LP), semintendinosus-gracilis (SGS) or quadriceps (QS) tendons. The anatomical positioning of the drilling canals, transplant fixation, complication rate, revision aspects as well as economic aspects are still under discussion. Fixation of the transplant can be carried out mechanically with various anchoring systems or using biological implant-free healing (free of cost). The compulsory and private health insurance companies as well as staff medical insurance associations guarantee a constant remuneration according to the EBM (uniform evaluation standard), GOA (scale of fees for physicians) or UV-GOA (accident insurance scale of fees for physicians). At present all health insurances accept the costs for implantations in outpatient areas (minus 25 Euro own contribution for compulsory health insurance). For inpatient treatment remuneration is according to the flat-rate scale (diagnosis-related groups). Costs for implants, which are increasing over the years, diminish the economic result in this case. The technique of implant-free replacement of ACLs is cheaper, with fewer complications and achieves functional results for fixation of the transplant which are comparable to techniques with implants. This also applies to the double bundle technique. Implant-free replacement of ACLs with the patellar tendon is a suitable, uncomplicated operation technique with comparably low costs and belongs to the state of the art according to Hertel, Petersen and other authors. This method already has a valuable place in surgery of the ACL.

Neue Guajanolide aus Centaurea imperialis.

The aerial parts of CENTAUREA IMPERIALIS afforded three new guaianolides, 3-desoxysolstitialin A and two derivatives of centaurepensin.