Institution: The Rizolli Institute, Italy
Investigator: Professor Antonio Moroni
Stream: Research Fellowship
Topic: Biomaterials (HA)
Status: Completed
Intreamedullary fixation is the treatment of choice of trochanteric fractures in the osteoporotic patient. However, the incidence of mechanical failure is remarkable, primarily because of lag screw cut out in the femoral head.
Hydroxyapatite coating of screws has been developed in order to overcome failures in osteoporotic fractures. Although theoretically providing improved bonding, with great resistance to cut out, the demonstration of a significant advantage in vivo requires large numbers of patients often examined over a considerable length of time.
The stereo radiographic technique of Radiostereometry (RSA) offers the best solution for early clinical trials of such trauma implants. Using novel RSA software developed in Aberdeen RSA unit, we propose to compare directly the migration of two different lag screws within the femoral heads of patients surgically treated for low-impact pertrochanteric fractures of the femur.
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A radiostereometric Study of Hydroxyapatite Coating of the Lag Screw of the Intramedullary Hip Screw on the Fixation Ach
