Passive motion of the elbow joint: a biomechanical analysis

B. F. Morrey, E. Y.S. Chao

Research output: Contribution to journalArticlepeer-review

163 Scopus citations


A previously unreported method of measuring three dimensional motion of joints, applied to 2 elbows obtained post mortem, showed that during flexion there is a continuous and linear change in the carrying angle, the forearm going into varus angulation as elbow flexion progresses. In addition, internal axial rotation of the forearm occurs near the beginning and external axial rotation, toward the end of flexion. With the elbow extended, the ulna shows little tendency to deviate laterally or to rotate axially during pronation and supination. The axis of rotation during elbow flexion lies approximately at the center of the trochlea.

Original languageEnglish (US)
Pages (from-to)501-508
Number of pages8
JournalJournal of Bone and Joint Surgery - Series A
Issue number4
StatePublished - Jan 1 1976
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine


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