fingers_data = [
    {
        "bone_name": "metacarpal_01_l",
        "head_helper": "wrist_l",
        "tail_helper": "index_01_l"
    },
    {
        "bone_name": "metacarpal_02_l",
        "head_helper": "wrist_l",
        "tail_helper": "middle_01_l"
    },
    {
        "bone_name": "metacarpal_03_l",
        "head_helper": "wrist_l",
        "tail_helper": "ring_01_l"
    },
    {
        "bone_name": "metacarpal_04_l",
        "head_helper": "wrist_l",
        "tail_helper": "pinky_01_l"
    },
    {
        "bone_name": "metacarpal_01_r",
        "head_helper": "wrist_r",
        "tail_helper": "index_01_r"
    },
    {
        "bone_name": "metacarpal_02_r",
        "head_helper": "wrist_r",
        "tail_helper": "middle_01_r"
    },
    {
        "bone_name": "metacarpal_03_r",
        "head_helper": "wrist_r",
        "tail_helper": "ring_01_r"
    },
    {
        "bone_name": "metacarpal_04_r",
        "head_helper": "wrist_r",
        "tail_helper": "pinky_01_r"
    },
    {
        "bone_name": "index_01_l",
        "head_helper": "index_01_l",
        "tail_helper": "index_02_l"
    },
    {
        "bone_name": "index_02_l",
        "head_helper": "index_02_l",
        "tail_helper": "index_03_l"
    },
    {
        "bone_name": "index_03_l",
        "head_helper": "index_03_l",
        "tail_helper": "index_tip_l"
    },
    {
        "bone_name": "middle_01_l",
        "head_helper": "middle_01_l",
        "tail_helper": "middle_02_l"
    },
    {
        "bone_name": "middle_02_l",
        "head_helper": "middle_02_l",
        "tail_helper": "middle_03_l"
    },
    {
        "bone_name": "middle_03_l",
        "head_helper": "middle_03_l",
        "tail_helper": "middle_tip_l"
    },
    {
        "bone_name": "ring_01_l",
        "head_helper": "ring_01_l",
        "tail_helper": "ring_02_l"
    },
    {
        "bone_name": "ring_02_l",
        "head_helper": "ring_02_l",
        "tail_helper": "ring_03_l"
    },
    {
        "bone_name": "ring_03_l",
        "head_helper": "ring_03_l",
        "tail_helper": "ring_tip_l"
    },
    {
        "bone_name": "pinky_01_l",
        "head_helper": "pinky_01_l",
        "tail_helper": "pinky_02_l"
    },
    {
        "bone_name": "pinky_02_l",
        "head_helper": "pinky_02_l",
        "tail_helper": "pinky_03_l"
    },
    {
        "bone_name": "pinky_03_l",
        "head_helper": "pinky_03_l",
        "tail_helper": "pinky_tip_l"
    },
    {
        "bone_name": "index_01_r",
        "head_helper": "index_01_r",
        "tail_helper": "index_02_r"
    },
    {
        "bone_name": "index_02_r",
        "head_helper": "index_02_r",
        "tail_helper": "index_03_r"
    },
    {
        "bone_name": "index_03_r",
        "head_helper": "index_03_r",
        "tail_helper": "index_tip_r"
    },
    {
        "bone_name": "middle_01_r",
        "head_helper": "middle_01_r",
        "tail_helper": "middle_02_r"
    },
    {
        "bone_name": "middle_02_r",
        "head_helper": "middle_02_r",
        "tail_helper": "middle_03_r"
    },
    {
        "bone_name": "middle_03_r",
        "head_helper": "middle_03_r",
        "tail_helper": "middle_tip_r"
    },
    {
        "bone_name": "ring_01_r",
        "head_helper": "ring_01_r",
        "tail_helper": "ring_02_r"
    },
    {
        "bone_name": "ring_02_r",
        "head_helper": "ring_02_r",
        "tail_helper": "ring_03_r"
    },
    {
        "bone_name": "ring_03_r",
        "head_helper": "ring_03_r",
        "tail_helper": "ring_tip_r"
    },
    {
        "bone_name": "pinky_01_r",
        "head_helper": "pinky_01_r",
        "tail_helper": "pinky_02_r"
    },
    {
        "bone_name": "pinky_02_r",
        "head_helper": "pinky_02_r",
        "tail_helper": "pinky_03_r"
    },
    {
        "bone_name": "pinky_03_r",
        "head_helper": "pinky_03_r",
        "tail_helper": "pinky_tip_r"
    }
]