Ductus venosus pulsatility index and short-term variation of fetal heart rate are important indicators for the optimal timing of delivery before 32 weeks of gestation. Delivery should be considered if one of these parameters becomes persistently abnormal.

We studied reconstruction of the anterior cruciate ligament (ACL) in skeletally mature goats. In one group, the autogenous tissue was augmented with polydioxanone (PDS), the other group had no augmentation. Histological complete incorporation and remodeling of the transplant was found in both groups. The newly formed connective tissues gradually assumed the microscopic properties of the normal ligament. The augmented group showed a delay in remodeling and maturation of the fiber bundles. Mechanically, the PDS-augmented transplants were stronger than the nonaugmented transplants immediately after surgery. During the first 6 weeks, a rapid decrease in strength of the augmented transplants was found, whereas the strength of the nonaugmented group gradually increased. The results of our experiment do not favor augmentation of autografts in reconstruction of the ACL.RØsumØ Nous avons ØtudiØ la reconstruction du ligament croisØ antØrieur chez la chvre à squelette mature. Dans un groupe le tissu autogne a ØtØ renforcØ avec du polydioxanone (PDS), l'autre groupe n'avait aucun renforcement. Une incorporation histologique complte et un remodelage du transplant a ØtØ constatØ. Les tissus conjonctifs rØcemment formØs ont pris progressivement les propriØtØs microscopiques du ligament normal. Le groupe renforcØ a montrØ un dØlai dans le remodelage et la maturation des faisceaux de fibres. MØcaniquement les greffes renforcØes au PDS Øtaient plus fortes que les greffes non renforcØes immØdiatement aprs la chirurgie. Pendant les six premires semaines une baisse rapide de la force des greffes renforcØes a ØtØ constatØe, alors que la force du groupe non-renforcØ a augmentØ progressivement. Les rØsultats de notre expØrience ne sont pas en faveur d'un renforcement des autogreffes dans la reconstruction du ligament croisØ antØrieur.