Having multiple external fixation pin designs and insertion techniques has led to debate as to which combination creates the stiffest construct. This study sought to biomechanically evaluate construct strength using self-drilling (SD) and self-tapping (ST) pins inserted with either bicortical or unicortical fixation. SD and ST 5.0 mm stainless steel pins were used in combination with bicortical...

Primary stability is absence of mobility in the bone bed after mini-implant placement and depends on bone quality among other factors. Bone quality is a subjective term frequently considered as bone density. The aim of this preliminary study was to evaluate bone density in two bovine pelvic regions and verify the primary stability of miniscrews inserted into them. Forty bone blocks were extract...

Abstract Limited by rigid instruments, traditional open curettage of bone cysts requires large incisions and the removal substantial amounts healthy tissue to approach lesion. This causes a lengthy recovery period with an increased risk for complications. While other less invasive methods have been suggested, none accepted as standard treatment modalities, many them not applied beyond academic ...

To cite: Matar HE, James LA. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2014207730 DESCRIPTION Pyknodysostosis, also known as osteopetrosis acro-osteolytica, is a rare autosomal-recessive bone dysplasia characterised by osteosclerosis and short stature. It involves mutations in the gene that encodes cathepsin K, a lysosomal metalloproteinase highly expressed ...