Complex sentence: In Hojo-Jutsu safety was of concern, however, so as no permant harm is caused; however historic sketches of forms show ropes going around the front of the neck and around arms in a cinching fashion often under tension against the arms or legs.
Split into simpler sentences: In Hojo-Jutsu safety was of concern, however, so as no permanent harm was caused. Historic sketches of forms show ropes going around the front of the neck and around arms in a cinching fashion often under tension against the arms or legs.