Although vertebroplasty (VP) using polymethylmethacrylate (PMMA) is thought to be an effective procedure for osteoporotic vertebral compression fractures, several complications have been reported. In this paper, we present three patients who developed local kyphotic deformity as a result of late collapse of the cemented vertebrae. In all patients we safely removed the PMMA block through an ante...

A novel liquid photo-polymerization resist was prepared for nanoimprint lithography on transparent flexible plastic substrates. The resist is a mixture of polymethylmethacrylate (PMMA), methylmethacrylate (MMA), methacylic acid (MAA) and two photo-initiators, (2-isopropyl thioxanthone (ITX) and ethyl 4-(dimethylamino)benzoate (EDAB)). The resist can be imprinted at room temperature with a press...

Vertebral compression fracture is the most common complication of osteoporosis. It may result in persistent severe pain and limited mobility, and significantly impacts the quality of life. Vertebroplasty involves a percutaneous injection of bone cement into the collapsed vertebrae by fluorescent guide. The most commonly used bone cement in percutaneous vertebroplasty is based on the polymerizat...

AIM To evaluate the feasibility of this novel surgical approach for treatment of cervical discitis and vertebral osteomyelitis. MATERIAL AND METHODS This is a report of two patients who underwent anterior cervical decompression for discitis and vertebral osteomyelitis (DVO) with cervical spine reconstruction with polymethylmethacrylate impregnated with antibiotics (AI-PMMA). RESULTS Both pa...

The cosmetic and functional disabilities following radical surgery for traumatic injuries are significant and disabling. Definitive reconstruction should be performed wherever possible as part of the ablative procedure. When definitive reconstruction is coordinated and combined with maxillofacial prosthetic rehabilitation, head and neck defects can be restored to near-normal function and appear...

A detailed process characterization of SML electron beam resist for high-aspect-ratio nanopatterning at high sensitivity is presented. SML contrast curves were generated for methyl isobutyl ketone (MIBK), MIBK/isopropyl alcohol (IPA) (1:3), IPA/water (7:3), n-amyl acetate, xylene, and xylene/methanol (3:1) developers. Using IPA/water developer, the sensitivity of SML was improved considerably a...

Polymethylmethacrylate (PMMA)/ceria composite fibres were synthesized by using a sequential combination of polymer electrospinning, spray-coating with a sol, and a final calcination step to yield microstructured ceria tubes, which are composed of nanocrystalline ceria particles. The PMMA template is removed from the organic/inorganic hybrid material by radio frequency (rf) plasma etching follow...

Although polymethylmethacrylate (PMMA) is widely used as a denture base material, its disadvantages include low strength and thermal conductivity. The effects on conductivity, flexural strength, diffusivity, elastic modulus of adding Al2O3 SiC powders in different volumes to PMMA were investigated. A total 60 specimens prepared 10 groups (five for the conductivity test five (n:6). immersed wate...

Nowadays in orthopedic surgery -in the treatment of bone and soft tissue infectionsthere is an increasing claim for improving biodegradable drug delivery systems that can be easily placed into the site of application instead of the currently applied polymethylmethacrylate (PMMA) bone cements, since PMMA has some undesirable side effects. Therefore the aim of the study was to develop an injectab...

PURPOSE To describe a technique for percutaneous vertebroplasty of osteoporotic vertebral body compression fractures and to report early results of its use. METHODS The technique was used over a 3-year period in 29 patients with 47 painful vertebral fractures. The technique involves percutaneous puncture of the involved vertebra(e) via a transpedicular approach followed by injection of polyme...