Donal Mcnally Email and Phone Number

Head of the Bioengineering Research Group

Spinal BiomechanicsThe major focus of my research is in the field of spinal mechanics, particularly the mechanical function of the intervertebral disc and how this relates to internal structure. To further my research goals, I have developed a wide range of expertise ranging from functional and anatomical imaging, through standard biomechanical testing, to highly novel techniques to quantify the internal mechanical behaviour of intact skeletal structures.Biomechanical EvaluationI have considerable experience in the mechanical evaluation of both intact spinal segments and medical devices such as total disc replacements, motion preserving stabilisation systems and fusion devices.Mechanical and Physiological ModelingI have considerable experience modelling the disc as a multiphase system, and also in modelling the respirational metabolism of the disc cells. Similarly, I am experienced in modelling the mechanically complex behaviour of the disc and how this affects the tissues of the disc itself, and also adjacent structures such as the vertebral endplate.Impact BiomechanicsInjury Thresholds and CriteriaThe unique test facilities at the Institute of Biomechanics permit the mechanisms of injuries, such as ankle fractures in car crashes and brain damage in baby shaking, to be investigated and quantitative injury thresholds and criteria to be determined. This information is useful for 'calibrating' ATDs (crash test dummies) and drafting safety legislation.High Strain Rate/Impact TestingMy laboratory is equipped with a combination of facilities for evaluating biological tissues and structures at high strain rates that is unique within the United Kingdom. These facilities include; a crash track capable of programmed acceleration of up to 100g, a 2m drop tower, and a pneumatic impact gun capable of propelling 10kg specimens into targets at velocities up to 11ms-1.