Multiple open and endoscopic techniques have been described for recalcitrant cases of plantar fasciitis. Compared with open techniques, endoscopic plantar fasciotomy has been shown to be safe and effective with decreased postoperative pain and quicker recovery, as well as decreased risk of soft tissue and neurovascular injury, while retaining the ability to provide direct visualization of the plantar fascia to facilitate proper release. Single-portal endoscopic techniques may offer additional advantages including less portal site and postoperative pain, earlier return to activities, and cost-effectiveness and higher patient satisfaction when performed in the office setting. This Technical Note describes the authors' technique for nanoscopic plantar fasciotomy using a single-portal needle arthroscopy system, as well as advantages and limitations of this technique.