A spinal tensioning device (2200, 2300, 2400, 2500, 2600) for noninvasive medical treatment, comprising: a member holder (2204, 2302, 2402, 2540, 2602) defining a central axis, configured to selectively engage with one or more members (2202, 2210, 2310, 2330, 2406, 2410, 2510, 2512, 2604, 2606), the one or more members being respectively configured to engage with a bone, wherein the member holder comprises a first portion (2320, 2418, 2504, 2616) and a second portion being configured to enable the one or more members to translate apart along the central axis; a magnetic drive component (2206, 2304, 2408, 2412, 2414, 2514, 2610, 2612, 2614) disposed in the first portion (2204, 2320, 2418, 2504, 2616) of the member holder and configured to convert rotational translation into linear translation when subjected to a desired magnetic field; a drive engagement component (2226, 2404, 2322, 2506, 2508, 2608, 2618) comprising: a first threaded portion comprising a rod (2220, 2322, 2420, 2522, 2524, 2608) having external threads and rotationally engaged with the magnetic drive component, wherein the magnetic drive component applies rotation to the first threaded portion when the magnetic drive component is subjected to an external magnetic field, a second threaded portion (2214, 2320, 2418, 2520, 2526, 2528, 2620) disposed in the second portion of the member holder, and comprising internal threads, wherein rotation of the first threaded portion results in the second threaded portion translating along the central axis of the member holder with respect to the first portion of the member holder, the first portion of the member holder mitigating linear translation of the magnetic drive component in the first portion of the member holder. a member holder (2204, 2302, 2402, 2540, 2602) defining a central axis, configured to selectively engage with one or more members (2202, 2210, 2310, 2330, 2406, 2410, 2510, 2512, 2604, 2606), the one or more members being respectively configured to engage with a bone, wherein the member holder comprises a first portion (2320, 2418, 2504, 2616) and a second portion being configured to enable the one or more members to translate apart along the central axis; a magnetic drive component (2206, 2304, 2408, 2412, 2414, 2514, 2610, 2612, 2614) disposed in the first portion (2204, 2320, 2418, 2504, 2616) of the member holder and configured to convert rotational translation into linear translation when subjected to a desired magnetic field; a drive engagement component (2226, 2404, 2322, 2506, 2508, 2608, 2618) comprising: a first threaded portion comprising a rod (2220, 2322, 2420, 2522, 2524, 2608) having external threads and rotationally engaged with the magnetic drive component, wherein the magnetic drive component applies rotation to the first threaded portion when the magnetic drive component is subjected to an external magnetic field, a second threaded portion (2214, 2320, 2418, 2520, 2526, 2528, 2620) disposed in the second portion of the member holder, and comprising internal threads, wherein rotation of the first threaded portion results in the second threaded portion translating along the central axis of the member holder with respect to the first portion of the member holder, the first portion of the member holder mitigating linear translation of the magnetic drive component in the first portion of the member holder. a first threaded portion comprising a rod (2220, 2322, 2420, 2522, 2524, 2608) having external threads and rotationally engaged with the magnetic drive component, wherein the magnetic drive component applies rotation to the first threaded portion when the magnetic drive component is subjected to an external magnetic field, a second threaded portion (2214, 2320, 2418, 2520, 2526, 2528, 2620) disposed in the second portion of the member holder, and comprising internal threads, wherein rotation of the first threaded portion results in the second threaded portion translating along the central axis of the member holder with respect to the first portion of the member holder, the first portion of the member holder mitigating linear translation of the magnetic drive component in the first portion of the member holder.