Attachments for isokinetic dynamometers and methods of use thereof are provided for use with subjects having limb impairments. An example dynamometer attachment for use with a subject having an impaired limb includes a frame that has fixed thereto a padded limb support, where the padded limb support is configured to secure an impaired limb of the subject. The padded limb support includes a securing mechanism for securing the impaired limb relative to the frame, and the frame is connected to the dynamometer lever arm via an intermediate connector assembly. The connector assembly permits translation of the padded limb support in at least two dimensions relative to the lever arm prior to securing the frame fixedly in place. The translation adjustability of the attachment facilitates the alignment of the dynamometer attachment to the limb or partial limb of the subject without requiring movement of the subject.
