Correction to: Features of intracranial hemorrhage in cerebral venous thrombosis.

The original version of this article unfortunately contained mistakes. The correct information is given below.

Features of intracranial hemorrhage in cerebral venous thrombosis.

BACKGROUND: Cerebral venous thrombosis (CVT) is associated with intracranial hemorrhage. AIM: To identify clinical and imaging features of CVT-associated intracranial hemorrhage. We hypothesized that higher clot burden would be associated with a higher risk of intracranial hemorrhage. METHODS: We performed a retrospective analysis of an international, multicenter cohort of patients with confirmed cerebral venous thrombosis who underwent computed tomography within 2 weeks of symptom onset. Clinical and imaging features were compared between patients with and without intracranial hemorrhage. Clot burden was assessed by counting the number of thrombosed venous sinuses and veins on confirmatory imaging. RESULTS: We enrolled 260 patients from 10 institutions in Europe and Mexico. The mean age was 42 years and 74% were female. Intracranial hemorrhage was found in 102 (39%). Among them parenchymal hemorrhage occurred in 64 (63%), in addition, small juxta-cortical hemorrhage was found in 30 (29%), subarachnoid hemorrhage in 24 (24%) and subdural hemorrhage in 11 (11%). Multiple concomitant types of hemorrhage occurred in 23 (23%). Older age and superior sagittal thrombosis involvement were associated with presence of hemorrhage. The number of thrombosed venous sinuses was not associated with intracranial hemorrhage (median number IQRInterquartile ratio] of sinuses/veins involved with hemorrhage 2 (1-3) vs. 2 (1-3) without hemorrhage, p = 0.4). CONCLUSION: The high rate of intracranial hemorrhage in cerebral venous thrombosis is not explained by widespread involvement of the venous sinuses. Superior sagittal sinus involvement is associated with higher bleeding risk.

[Wear measurements of hip prostheses with UHMW polyethylene (RCH-1000) socket and chromium plated protasul-10 head (author's transl)]. / Verschleissmessung bei Hüft-Totalendoprothesen mit Polyäthylenpfanne (RCH-1000) und hartverchromtem Protasul-10 Kopf.

An estimation of wear was carried out on 100 of 340 UHMW polyethylene sockets (RCH 1000) that were implanted with Protasul-10 prostheses furnished with a chromium plated head. This was effected by measuring the position of the head relative to the socket as seen on radiographs during a follow-up period of 4 years. The method employed was verified in 3 cases (in which the socket had been removed) by measurements on silastic casts of the bearing surface. Practically no difference in the results was observed. The average wear rate amounted to 0.16 mm/year over an observation period of 4 years. Furthermore, it has been observed that para-articular calcification seems to be independent of the amount of abrasive debris present. It seems rather to depend on other factors, such as the size of the haematom, degree of muscle necrosis, etc.