Results 251 to 260 of about 1,892,246 (283)

Factors affecting the pullout strength of cancellous bone screws.

Journal of Biomechanical Engineering, 1996
Screws placed into cancellous bone in orthopedic surgical applications, such as fixation of fractures of the femoral neck or the lumbar spine, can be subjected to high loads.
Jens R. Chapman, R. Harrington, K. Lee, Paul A. Anderson, A. Tencer, D. Kowalski   +5 more
semanticscholar   +1 more source

The Effect of Screw Pullout Rate on Screw Purchase in Synthetic Cancellous Bone

Journal of Biomechanical Engineering, 2008
Clinically, orthopaedic fracture fixation constructs are mounted using screws inserted into cancellous bone, while biomechanical studies are increasingly using commercially available synthetic bones. The goal of this study was to examine the effect of screw pullout rate on cancellous bone screw purchase strength in synthetic cancellous bone.
Radovan Zdero, Emil H. Schemitsch
openaire   +3 more sources

Single crystal alumina for dental implants and bone screws.

Journal of Biomedical Materials Research, 1980
When ground to a suitable form, flexural strength of single crystal alumina (Al2O3) decreases to as low as one third the strength of the intact crystal.
H. Kawahara, M. Hirabayashi, T. Shikita
semanticscholar   +1 more source

The effect of pilot hole size on the insertion torque and pullout strength of self-tapping cortical bone screws in osteoporotic bone.

Journal of Trauma, 2008
BACKGROUND All surgical screws can experience failure if the torsional, tensile, and flexion loads exerted on the screws are excessively high. The use of self-tapping screws (STS) results in higher insertion torques (IT) as these screws cut their own ...
S. Battula, A. Schoenfeld, Vivek Sahai, G. Vrabec, Jason C. Tank, G. Njus   +5 more
semanticscholar   +1 more source

Resorbable screws for fixation of autologous bone grafts

Clinical Oral Implants Research, 2006
Abstract: The aim of this study was to evaluate the suitability of resorbable screws made of poly (d.l‐lactide) acid (PDLLA) for fixation of autologous bone grafts related to graft regeneration and osseointegration of dental implants. In eight edentulous patients suffering from insufficient retention of their upper denture related to a severely ...
Gerry M. Raghoebar, Robert S.B. Liem, Rudolf R.M. Bos, Jacqueline E. van der Wal, Arjan Vissink   +4 more
openaire   +3 more sources

Proximal interphalangeal joint arthrodesis in 34 horses using two parallel 5.5-mm cortical bone screws.

Veterinary surgery, 2001
OBJECTIVE To report clinical experience with arthrodesis of the proximal interphalangeal joint in horses using two parallel 5.5-mm cortical bone screws placed in lag fashion. STUDY DESIGN Retrospective, clinical study.
K. MacLellan, W. H. Crawford, D. Macdonald   +2 more
semanticscholar   +1 more source

An injectable cementing screw for fixation in osteoporotic bone

Journal of Biomedical Materials Research, 2000
With the aging population, osteoporosis and osteoporotic fractures are becoming more prevalent. Adequate screw fixation in this type of bone is difficult. Screws are often cemented in bone to help obtain purchase. However, current cementing techniques do not ensure implant stability.
Yuehuei H. An, Brodie E. McKoy
openaire   +3 more sources

An in vitro biomechanical comparison of the insertion variables and pullout mechanical properties of ao 6.5-mm standard cancellous and 7.3-mm self-tapping, cannulated bone screws in foal femoral bone.

Veterinary surgery, 2004
OBJECTIVE To compare screw insertion variables and pullout mechanical properties between AO 6.5-mm cancellous and 7.3-mm cannulated bone screws in foal femoral bone. STUDY DESIGN A paired, in vitro mechanical study.
N. L. Johnson, L. Galuppo, S. Stover, K. Taylor   +3 more
semanticscholar   +1 more source

The Influence of Screw Positions of Bone Fixation Screws on a TMJ Implant

2010
There are several diseases that can affect the human temporomandibular joint (TMJ), among which we highlight cancer, trauma or fracture, congenital malformation and osteochondritis.
Pedro Talaia, Antonio Ramos, J. A. Simões, Michel Mesnard, Carlos Relvas, António Completo   +5 more
openaire   +2 more sources

Cortical bone screws

Injury, 1994
R.A. Marston, S.T. Moyes, R.L. Williams
openaire   +2 more sources