A partially inflated rectangular balloon tissue expander filled with saline solution (containing methylene blue dye). The filling port is highlighted by the red arrow.

Swell gel - anisotropic hydrogel systems for surgical tissue expansion

Anisotropic hydrogel systems for surgical tissue expansion have been developed to aid soft tissue growth. Dr Jinhyun Hannah Lee, Post-doctoral Research Fellow at the University of Oxford, UK, reports on the process.
Surgical hip replacement implant in situ. (A) Scanning electron microscope images showing variations in surface structure created by machining techniques at increasing magnifications (x25 to x500). These features can impact on the biocompatibility of the implant in locations in contact with bone, such as the acetabular cup (B) and the stem which is inserted into the femur (C)

Joined at the hip - optimising implant biocompatibility

An in vitro approach for optimising implant biocompatibility has been developed by Damian Marshall, Principal Scientist for Cell Biology at LGC, and Paul Tomlins, Principal Scientist for biomaterials at NPL, both Teddington, UK, who outline the process.
surgeon looking at x-rays

A sticky situation - bone adhesives

David Farrar, Science Manager for Biomaterials at Smith & Nephew Research Centre, York, UK, gives an update on the development of bone adhesives.