Suture Anchor Biomechanics after Rotator Cuff Footprint Decortication

Adam E. Hyatt, Kyle Lavery, Christopher Mino, Aman Dhawan

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Purpose To identify the biomechanical consequences of violating the cortical shelf when preparing the greater tuberosity for suture anchor repair. Methods Demographic information and bone mineral density were obtained for 20 fresh-frozen human humeri (10 matched pairs). Suture anchors were placed at a predetermined location in decorticated and non-decorticated settings after randomization. Anchors were tested under cyclic loads followed by load-to-failure testing. The number of cycles, failure mode, stiffness, and final pullout strength were recorded. Results Nineteen specimens met the inclusion criteria for final testing. A significant difference in mean ultimate load to failure was seen between the non-decorticated specimens (244.04 ± 89.06 N/mm) and the decorticated humeri (62.84 ± 38.04 N/mm, P <.0001). Regression analysis showed positive correlations with female gender and decreased bone mineral density (P =.008 and P =.0005, respectively). Conclusions Decortication of the rotator cuff footprint significantly decreases the pullout strength of the suture anchor. Gender and bone mineral density also play a significant role in bone-anchor biomechanics and should be considered during repair. Clinical Relevance Caution should be exercised when preparing the rotator cuff footprint before suture anchor placement because of the significant risk of early repair failure at the bone-anchor interface.

Original languageEnglish (US)
Pages (from-to)544-550
Number of pages7
JournalArthroscopy - Journal of Arthroscopic and Related Surgery
Volume32
Issue number4
DOIs
StatePublished - Apr 1 2016

Fingerprint

Suture Anchors
Rotator Cuff
Biomechanical Phenomena
Bone Density
Humerus
Random Allocation
Regression Analysis
Demography

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

Hyatt, Adam E. ; Lavery, Kyle ; Mino, Christopher ; Dhawan, Aman. / Suture Anchor Biomechanics after Rotator Cuff Footprint Decortication. In: Arthroscopy - Journal of Arthroscopic and Related Surgery. 2016 ; Vol. 32, No. 4. pp. 544-550.
@article{abbd1a97d2734453b7837839f74e253d,
title = "Suture Anchor Biomechanics after Rotator Cuff Footprint Decortication",
abstract = "Purpose To identify the biomechanical consequences of violating the cortical shelf when preparing the greater tuberosity for suture anchor repair. Methods Demographic information and bone mineral density were obtained for 20 fresh-frozen human humeri (10 matched pairs). Suture anchors were placed at a predetermined location in decorticated and non-decorticated settings after randomization. Anchors were tested under cyclic loads followed by load-to-failure testing. The number of cycles, failure mode, stiffness, and final pullout strength were recorded. Results Nineteen specimens met the inclusion criteria for final testing. A significant difference in mean ultimate load to failure was seen between the non-decorticated specimens (244.04 ± 89.06 N/mm) and the decorticated humeri (62.84 ± 38.04 N/mm, P <.0001). Regression analysis showed positive correlations with female gender and decreased bone mineral density (P =.008 and P =.0005, respectively). Conclusions Decortication of the rotator cuff footprint significantly decreases the pullout strength of the suture anchor. Gender and bone mineral density also play a significant role in bone-anchor biomechanics and should be considered during repair. Clinical Relevance Caution should be exercised when preparing the rotator cuff footprint before suture anchor placement because of the significant risk of early repair failure at the bone-anchor interface.",
author = "Hyatt, {Adam E.} and Kyle Lavery and Christopher Mino and Aman Dhawan",
year = "2016",
month = "4",
day = "1",
doi = "10.1016/j.arthro.2015.08.034",
language = "English (US)",
volume = "32",
pages = "544--550",
journal = "Arthroscopy - Journal of Arthroscopic and Related Surgery",
issn = "0749-8063",
publisher = "W.B. Saunders Ltd",
number = "4",

}

Suture Anchor Biomechanics after Rotator Cuff Footprint Decortication. / Hyatt, Adam E.; Lavery, Kyle; Mino, Christopher; Dhawan, Aman.

In: Arthroscopy - Journal of Arthroscopic and Related Surgery, Vol. 32, No. 4, 01.04.2016, p. 544-550.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Suture Anchor Biomechanics after Rotator Cuff Footprint Decortication

AU - Hyatt, Adam E.

AU - Lavery, Kyle

AU - Mino, Christopher

AU - Dhawan, Aman

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Purpose To identify the biomechanical consequences of violating the cortical shelf when preparing the greater tuberosity for suture anchor repair. Methods Demographic information and bone mineral density were obtained for 20 fresh-frozen human humeri (10 matched pairs). Suture anchors were placed at a predetermined location in decorticated and non-decorticated settings after randomization. Anchors were tested under cyclic loads followed by load-to-failure testing. The number of cycles, failure mode, stiffness, and final pullout strength were recorded. Results Nineteen specimens met the inclusion criteria for final testing. A significant difference in mean ultimate load to failure was seen between the non-decorticated specimens (244.04 ± 89.06 N/mm) and the decorticated humeri (62.84 ± 38.04 N/mm, P <.0001). Regression analysis showed positive correlations with female gender and decreased bone mineral density (P =.008 and P =.0005, respectively). Conclusions Decortication of the rotator cuff footprint significantly decreases the pullout strength of the suture anchor. Gender and bone mineral density also play a significant role in bone-anchor biomechanics and should be considered during repair. Clinical Relevance Caution should be exercised when preparing the rotator cuff footprint before suture anchor placement because of the significant risk of early repair failure at the bone-anchor interface.

AB - Purpose To identify the biomechanical consequences of violating the cortical shelf when preparing the greater tuberosity for suture anchor repair. Methods Demographic information and bone mineral density were obtained for 20 fresh-frozen human humeri (10 matched pairs). Suture anchors were placed at a predetermined location in decorticated and non-decorticated settings after randomization. Anchors were tested under cyclic loads followed by load-to-failure testing. The number of cycles, failure mode, stiffness, and final pullout strength were recorded. Results Nineteen specimens met the inclusion criteria for final testing. A significant difference in mean ultimate load to failure was seen between the non-decorticated specimens (244.04 ± 89.06 N/mm) and the decorticated humeri (62.84 ± 38.04 N/mm, P <.0001). Regression analysis showed positive correlations with female gender and decreased bone mineral density (P =.008 and P =.0005, respectively). Conclusions Decortication of the rotator cuff footprint significantly decreases the pullout strength of the suture anchor. Gender and bone mineral density also play a significant role in bone-anchor biomechanics and should be considered during repair. Clinical Relevance Caution should be exercised when preparing the rotator cuff footprint before suture anchor placement because of the significant risk of early repair failure at the bone-anchor interface.

UR - http://www.scopus.com/inward/record.url?scp=84961877378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961877378&partnerID=8YFLogxK

U2 - 10.1016/j.arthro.2015.08.034

DO - 10.1016/j.arthro.2015.08.034

M3 - Article

C2 - 26524936

AN - SCOPUS:84961877378

VL - 32

SP - 544

EP - 550

JO - Arthroscopy - Journal of Arthroscopic and Related Surgery

JF - Arthroscopy - Journal of Arthroscopic and Related Surgery

SN - 0749-8063

IS - 4

ER -