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Abstract
Suture anchors are bing increasingly reported as a means of fixation of torn rotator
cuff tendons to bone. The author has developed a mechanical model for the suture anchor-rotator
cuff construct based on an analogy to the deadman system used to stabilize a corner
fence post. Using this model, one can demonstrate a mechanically favorable angle of
insertion of the suture anchor (θ1) such that the anchor's pullout strength is increased at low angles of θ1. In addition, the angle that the suture makes with the direction of pull of the rotator
cuff (θ2) has a direct effect on tension in the suture. A low angle of θ2 minimizes the total tension in the suture, thereby minimizing the chance of suture
breakage.
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References
- Arthroscopic rotator cuff repair.in: Presented at the Arthroscopy Association of North America, Fall Course, Albuquerque, NMOctober 7, 1993
- Arthroscopic fixation of the torn rotator cuff tendon using suture anchors and permanent mattress sutures: A preliminary report.in: Presented at the Arthroscopy Association of North America, 1994 Speciality Day Meeting, New Orleans, LAFebruary 27, 1994
- Arthroscopic repair of the rotator cuff using plastic suture anchors.in: Presented at the Arthroscopy Association of North America, 1994 Specialty Day Meeting, New Orleans, LAFebruary 27, 1994
Faris ME. Personal communication, January 1993.
- The deadman theory of suture anchors.in: Presented at Update 1994: New Perspectives in Arthroscopy and Sports Medicine, Palm Springs, CAMarch 16–19, 1994
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© 1995 Published by Elsevier Inc.
