%0 Journal Article %A Thorkild J. Engen %T DEVELOPMENT OF EXTERNALLY POWERED UPPER EXTREMITY ORTHOTIC SYSTEMS %D 1965 %J The Journal of Bone & Joint Surgery British Volume %P 465-468 %V 47-B %N 3 %R 10.1302/0301-620X.47B3.465 %U https://doi.org/10.1302/0301-620X.47B3.465 %K