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More about Quadriceps force after non- hinged and hinged TKA

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Book synopsis

Patients who received total knee arthroplasty §frequently show problems during §knee extension exercises due to biomechanical §alterations. Hinged knee prostheses, which §provide higher stability than non-hinged designs, §were supposed to minimize them. §Therefore we investigated the quadriceps force §required to extend the knee after non-hinged and §hinged total knee arthroplasty. Human knee specimens §were tested in a kinematic knee simulator in §physiologic conditions, after implantation of two §types of non-hinged cruciate retaining prosthesis §and a hinged prosthesis. During simulation of an §extension cycle, the change of quadriceps force to §produce the constant extension moment of 31 Nm was §measured using a load cell attached to the §quadriceps tendon. After implantation of the non-§hinged prostheses maximum quadriceps force increased §up to 1257 N in knee extension. Following the §implantation of the hinged prosthesis quadriceps §extension force decreased to 690 N in §extension. Hinged knee prostheses improve the lever §arm in knee extension due to higher knee joint §stability. This would offer a potential advantage §for patients.

Book details

Book category Books in English Medicine Medicine: general issues

• Full title: Quadriceps force after non- hinged and hinged TKA
• Author: Sven Ostermeier
• Language: English
• Binding: Paperback
• Number of pages: 52
• EAN: 9783639168327
• ISBN: 3639168321
• ID: 06825193
• Publisher: VDM Verlag
• Weight: 91 g
• Dimensions: 229 × 152 × 3 mm
• Date of publishing: 24. June 2009

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