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. 2018 Oct 31;41(4):431–439. doi: 10.1007/s00276-018-2121-2

Fig. 2.

Fig. 2

Measurement scheme of the ulna’s shaft primary ossification center in the sagittal plane. 1—length, 2—proximal transverse diameter, 3—middle transverse diameter, 4—distal transverse diameter, 5—projection surface area