**Precise Measurement System for Knee Joint Motion During the Pendulum Test Using Two Linear Accelerometers**

Yoshitake Yamamoto1, Kazuaki Jikuya2, Toshimasa Kusuhara3, Takao Nakamura3, Hiroyuki Michinishi4 and Takuji Okamoto3 *1Himeji Dokkyo University 2Kawasaki University of Medical Welfare 3Okayama University 4Okayama University of Science Japan* 
