Ultrasound diagnosis of neonatal fracture separation of the upper humeral epiphysis.

VOL. 74-B, No. 3, MAY 1992 Most shoulders are arthrodesed in 20#{176} to 50#{176} of abduction, so that the suprascapular nerve is stretched when the arm is hanging by the side and may be more vulnerable to acute or chronic trauma. The arthrodesed shoulder is not always pain free even if there is radiographic evidence of bone fusion ; Cofield and Briggs (1979) reported moderate or severe pain in 17 of 66 arthrodesed shoulders, and Vastam#{228}ki (1987) in eight of 23. Entrapment of the suprascapular nerve should be considered as the cause of pain in these cases.