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. 2020 Nov 11;32(11):748–753. doi: 10.1589/jpts.32.748

Table 4. The mean isolated flexion angles and mean ratio of flexion angles of the MP and PIP joints.

Side	Joint	Finger
		Index	Middle	Ring	Small
		Index	Middle	Ring	independent	common	absent
Right	MP	63.5° (41.7%)	60.0° (37.2%)	57.0° (35.5%)	55.7° (43.0%)	65.7° (76.6%)	64.8° (85.5%)
Right	PIP	88.9° (58.3%)	101.1° (62.8%)	103.5° (64.5%)	73.7° (57.0%)	20.1° (23.4%)	11.0° (14.5%)
Left	MP	65.8° (42.5%)	58.8° (36.7%)	56.1° (35.4%)	59.5° (44.2%)	58.9° (78.8%)	60.2° (84.6%)
Left	PIP	89.0° (57.5%)	101.6° (63.3%)	102.1° (64.6%)	75.1° (55.8%)	15.8° (21.2%)	11.0° (15.4%)

MP: metacarpophalangeal; PIP: proximal interphalangeal.