Biomechanics is concerned with the functions and structures of the musco-skeletal system and movements of biological systems. Medical products to be tested are prostheses, osteosynthetic implants, trauma products and orthopedic implants.

1. OVERVIEW
Intelligent testing
Zwick Testing Solutions
for Biomechanics &
Orthopaedics

2. Standards:
 ISO 7206-4:2002; ASTM F 1612-95
(determination of endurance properties of
stemmed femoral components, 5 million cycles,
15 Hz)
 ISO 7206-8:1995
(specification for endurance of stemmed
femoral components with application of torsion)
 simulates and measures the natural wear of the
joint in a shorter time for different body weights
and types/level of activities
 allows designers to develop improved prostheses
with a reduced chance of implant failure for
patients of different weight and activity levels
 10kN or 25kN servo-hydraulic machine, optionally
with temperature-conditioned water-bath
Biomechanics & orthopaedics
Durability of hip-joint implants
Amsler HC 10 Hip joint
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3.  ISO 7206-9:1994
(method for determination of resistance to
torque of head fixation of stemmed femoral
components).
 This test involves determining resistance to
torque between the femoral head and the
femoral stem.
 Allows designers to develop improved fixation
between
the two components.
 Zwick 20kN static biaxial testing machine with
500 Nm torque drive.
 A static compressive preload is applied, then
the transverse torque is increased until the
head begins to rotate.
Biomechanics & orthopaedics
Zwick Z020 testing machine for compression and torque testing on
femoral head and stem of a hip implant
Component fixing in hip implants
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4.  ASTM F 1717 (method for static and fatigue
testing of spinal implant assemblies in a
vertebrectomy model)
 HC10 servo-hydraulic testing machine
 integrated low-noise hydraulic pump
 flexible fixture and specimen mounting via
T-slotted table
 easy, safe operation via proven software-
controller combination
ASTM F 1717-04 fatigue test
 6 samples
 up to 5 million cycles
 frequency up to 5 Hz
 customer-specific: additional torsion
drive
Biomechanics & orthopaedics
Durability of spinal implants
Zwick HCT25 testing machine for compression tests on a spinal
vertebrectomy model
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5. Mmax: 50 Nm
Dynamic: +- 20°
Static: 90°
Biomechanics & orthopaedics
Torsion test kit for static tests Torsion test kit for fatigue tests
Testing methods on spinal implants ASTM F2077
Torsion (static & dynamic)
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6. Biomechanics & orthopaedics
Testing methods on knee products (ISO 14879 or ASTM F1820)
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7. Biomechanics & orthopaedics
Testing trauma products
Fatigue in nails (ASTM F1264)
Tightening/unscrewing test on bone screwsFatigue in angled plates (ASTM F384) Screw pull-out tests (ASTM F543)
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8. Biomechanics & orthopaedics
This specification includes two test
methods:
 Single Cycle Bend Text
 Bending Fatigue Test
 optionally with displacement
transducer for direct
measurement of deflection
on the osteosynthesis specimen.
Fatigue test on plates acc. to ASTM F 382
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9. Biomechanics & orthopaedics
 testing components,
implants, functions
 lowest calibrated force
0.02 N
Combination with laserXtens Compact
PrecisionLine Vario Stapes prosthesis
(Heinz Kurz GmbH Medizintechnik)
Testing micro-components
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10. Contact
Zwick GmbH & Co. KG
August-Nagel-Str. 11
89079 Ulm, Germany
Tel: +49 7305 - 10-0
Fax: +49 7305 - 10-200
www.zwick.com/medical
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