Studies on Mechanical Strength of Bone:I. Torsional Strength of Normal Rabbit Tibio-Fibular Bone

Studies on Mechanical Strength of Bone: II.Torsional Strength of Cortical Bone after Rigid Plate Fixation with and without Compression

“…A s reported earlier (Paavolainen 1978), the mechanical properties of the rabbit tibio-fibular bone, apart from angular deformation, are energy absorbed until fracture (Nm) critically dependent on the body weight of the animal. Hence, the data obtained for each bone specimen were corrected for the weight of the animal.…”

“…As previously described (Paavolainen 1978), the ends of the bones were embedded in nuts with epoxy resin, leaving a constant length (8.5 cm) of bone for testing. The specimen was then fitted into the sockets of the torsiometer and subjected to external rotation at a constant deformation speed of 3.6 degreedsecond.…”

Loss of bone strength after intramedullary nailing: Torsion tests of tibial osteotomies in rabbits

“…Biphasic changes in the biomechanical strength of healing osteotomies have been reported from this laboratory after rigid plate fixation (Paavolainen et al 1979). The similarity in bone strength alterations after rigid intramedullary nailing and rigid plate fixation is obvious (Figure 1).…”

“…The load-deformation curves were simultaneously recorded. Each bone was photographed before and after testing, and the type of fracture was recorded (Paavolainen 1978).…”

Torsional Strength of Cortical and Cancellous Bone Grafts After Rigid Plate Fixation

“…The specimen was subjected to torsion at a constant angular velocity of 3.6 degreedsecond. The precision of the testing equipment has been reported by Paavolainen (1978).…”