Final answer:
The popularization of transverse friction massage in the context of modern physiotherapy is most commonly attributed to James Cyriax, a British orthopedic surgeon, as part of the Cyriax method.
Step-by-step explanation:
The use of transverse friction massage for treatment of soft tissue lesions was popularized by Cyriax. This type of massage is a technique used by therapists to address issues with ligament, tendon, and muscle injuries. It involves applying pressure across the direction of the tissue to enhance mobility and facilitate healing. Although the names provided in the question are significant figures in physical therapies, the credit for popularizing transverse friction massage in the context of modern physiotherapy often goes to James Cyriax, a British orthopedic surgeon. This technique forms a part of what is commonly referred to as the Cyriax method.