monoarticular
/ˌmɒnəʊɑːˈtɪkjʊlə/(also monarticular)
adjective
1 Medicine. Especially of arthritis: affecting a single joint.
2 Physiology. Of a muscle: passing over only one joint. Of a movement: involving only one joint.
Origin
Late 19th century; earliest use found in William Van Buren (1819–1883). From mono- + articular noun.