Ten percent of adults over 60 years old in Mexico are thought to have osteoarthritis, a degenerative disease marked by current degradation of articular cartilage. Often resulting in isolation and lower quality of life, this disorder not only affects mobility and physical ability but also emotional well-being and social involvement. Though widely used, conventional therapies, including physiotherapy and pharmacological pain management, often have restrictions related to accessibility, long-term adherence, and side effects. Pulsed Electromagnetic Field (PEMF) therapy has emerged as a promising non-invasive alternative, with increasing scientific support in this context. During a pilot trial with 13 participants, a significant reduction in all three domains (pain, stiffness, and physical disability) was observed in those who received real stimulation. Oriented toward improving the accessibility, usability, and consistency of therapy in patients with early-stage knee osteoarthritis, this paper proposes the development of a portable and wearable PEMF-based therapeutic system meant for home use. This prototype solves a major demand for efficient, self-administered treatment solutions in the field of musculoskeletal rehabilitation by combining technological innovation with user-centered design.