Fusion defects

This procedure causes reduced fusion defects and increases the crystallinity, density, stiffness, hardness, and yield strength. Further, it results in an increased resistance to creep, oxidation and fatigue. 

HamUton J.V., H.C. Wang, and C. Sung. 1996. The effect of fusion defects on the mechanical properties of UHMWPE. Trans 5th World Biomater Conference 2 511. 

Muratoglu O.K., M. Jasty, and W.H. Harris. 1997. High resolution synchrotron infra-red microscopy of the structure of fusion defects in UHMWPE. Transactions of the 43rd Orthopedic Research Society 22 773. 

Wrona M., M.B. Mayor, J.P. Collier, and R.E. Jensen. 1994. The correlation between fusion defects and damage in tibial polyethylene bearings. Clin Orthop 299 92-103. 

This case shows that patients with CMT2A2, and possibly other mitochondrial fusion defects, may be uniquely susceptible to Emb-induced neurotoxicity. Older age, hypertension (adjusted OR=1.62, 95%CI 1.16-2.26) and reni diseases (without end-stage renal disease, adjust OR=2.11, 95%CI 1.02 to 4.35 with end-stage renal diseases, adjusted OR=3.73, 95%CI 1.79-7.74) are factors associated with increased risk of Emb-induced optic neuropathy. Patients whose average daily dose was >1200 mg or dmation of Emb >3 months were not at elevated risk compared with those whose prescription was <3 months (OR=1.35,95%CI 0.99 to 1.83, adjusted for age, sex, hypertension and renal diseases) [60 -]. 

Hot tap water is not thought to be particularly aggressive however, it can damage a weld that contains a lack-of-fusion defect in the presence of chlorides. In this case, the base metal is Type 304 stainless steel, and the weld metal Type 308. 

Care must be taken in this latter operation to avoid cold laps and lack-of-fusion defects. In both cases, preferential attack is avoided as long as the surface of the unmixed zone lies beneath the exposed surface of the weldment. 

H. Oonishi, E. Tsuji, and Y. Y. Kim. Retrieved total hip prostheses. Part 1. The effects of cup thickness, head size and fusion defects on wear. /. Mater. Sci Mater. Med. 9,394-401 (1998). 

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