Quadriceps forces and patellar motion in the anatomical model of the patellofemoral joint

Naotaka Sakai; Zong Ping Luo; James A. Rand; Kai Nan An

doi:10.1016/0968-0160(96)00200-1

Quadriceps forces and patellar motion in the anatomical model of the patellofemoral joint

Naotaka Sakai, Zong Ping Luo, James A. Rand, Kai Nan An

Medical Device Innovation Center

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

The effects of quadriceps muscle loading on three-dimensional patellar movements were studied in vitro with three patterns of muscle loading according to anatomical, mathematical and Q-angle models. Loading of the quadriceps based on the mathematical model resulted in more lateral patellar deviation, 0.5 ± 0.6 cm in 0°, and 0.6 ± 0.9 cm in 15° of knee flexion, than those of the other two models (P < 0.05). Loading based on the anatomical model resulted in more lateral patellar tilt, 2.0 ± 2.3° in 15°, and 1.3 ± 2.1° in 30° of knee flexion than the other two models (P < 0.05). The Q-angle model kept a neutral patellar position and was considered to be better than the anatomical or the mathematical model for the patellofemoral study using cadaver knees.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Knee
Volume	3
Issue number	1-2
DOIs	https://doi.org/10.1016/0968-0160(96)00200-1
Publication status	Published - 1996 Jul

All Science Journal Classification (ASJC) codes

Orthopedics and Sports Medicine

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title = "Quadriceps forces and patellar motion in the anatomical model of the patellofemoral joint",

abstract = "The effects of quadriceps muscle loading on three-dimensional patellar movements were studied in vitro with three patterns of muscle loading according to anatomical, mathematical and Q-angle models. Loading of the quadriceps based on the mathematical model resulted in more lateral patellar deviation, 0.5 ± 0.6 cm in 0°, and 0.6 ± 0.9 cm in 15° of knee flexion, than those of the other two models (P < 0.05). Loading based on the anatomical model resulted in more lateral patellar tilt, 2.0 ± 2.3° in 15°, and 1.3 ± 2.1° in 30° of knee flexion than the other two models (P < 0.05). The Q-angle model kept a neutral patellar position and was considered to be better than the anatomical or the mathematical model for the patellofemoral study using cadaver knees.",

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AU - Rand, James A.

AU - An, Kai Nan

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AB - The effects of quadriceps muscle loading on three-dimensional patellar movements were studied in vitro with three patterns of muscle loading according to anatomical, mathematical and Q-angle models. Loading of the quadriceps based on the mathematical model resulted in more lateral patellar deviation, 0.5 ± 0.6 cm in 0°, and 0.6 ± 0.9 cm in 15° of knee flexion, than those of the other two models (P < 0.05). Loading based on the anatomical model resulted in more lateral patellar tilt, 2.0 ± 2.3° in 15°, and 1.3 ± 2.1° in 30° of knee flexion than the other two models (P < 0.05). The Q-angle model kept a neutral patellar position and was considered to be better than the anatomical or the mathematical model for the patellofemoral study using cadaver knees.

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