The effect of partial removal of proximal ulna on elbow constraint

K. N. An, B. F. Morrey, E. Y S Chao

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

Accepted clinical practice allows the resection of up to 80% of the olecranon in comminuted fractures. Although this procedure is well-established, its effect on the static stability of the ulnohumeral joint has not been studied. An experiment was designed to study the amount of the greater sigmoid fossa of the ulna that can be removed before significant static ulnohumeral instability may occur. In eight fresh specimens, tested both in extension and at 90° of flexion, changes in constraint were studied in four displacement, two torsional, and two axial modes. The constraint of the ulnohumeral joint appeared linearly proportional to the area of remaining articulation and was not provided solely by the distal 25%. The proximal portion of the olecranon has a greater effect on joint constraint than is generally appreciated.

Original languageEnglish (US)
Pages (from-to)270-279
Number of pages10
JournalClinical Orthopaedics and Related Research
VolumeNO. 209
StatePublished - 1986

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Ulna
Elbow
Olecranon Process
Joints
Comminuted Fractures
Sigmoid Colon

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

An, K. N., Morrey, B. F., & Chao, E. Y. S. (1986). The effect of partial removal of proximal ulna on elbow constraint. Clinical Orthopaedics and Related Research, NO. 209, 270-279.

The effect of partial removal of proximal ulna on elbow constraint. / An, K. N.; Morrey, B. F.; Chao, E. Y S.

In: Clinical Orthopaedics and Related Research, Vol. NO. 209, 1986, p. 270-279.

Research output: Contribution to journalArticle

An, K. N. ; Morrey, B. F. ; Chao, E. Y S. / The effect of partial removal of proximal ulna on elbow constraint. In: Clinical Orthopaedics and Related Research. 1986 ; Vol. NO. 209. pp. 270-279.
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