Is it necessary to tie the medial row in rotator cuff repair double-row constructs when using suture tape?

Michael R. Mijares, Andrew Hiller, Ali Alhandi, David Kaimrajh, Ted Milne, Loren Latta, Michael G. Baraga

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To evaluate the selected biomechanical differences of a double-row trans-osseous equivalent rotator cuff repair with a knotless versus knot-tying medial row using suture tape in regard to repair displacement, stiffness, and ultimate load to failure. Methods: In 16 fresh-frozen human shoulders (8 matched pairs), double-row rotator cuff repairs were performed with medial-row mattress knots (MK) on one side, the other without (NK). Two DVRT (Differential Variable Reluctance Transducer) sensors were attached between the humerus and 3 mm above the repair site and were used to measure the displacement across the repair during cycling. The biomechanical parameters measured were repair displacement, stiffness, and ultimate load to failure. The supraspinatus was loaded in a similar fashion to previously described protocol using cyclic loading and load to failure testing.1 Results: All data from paired specimens were compared using paired Student t tests. No statistically significant difference (SSD) in displacement across the repair over the 200 cycles of the test was noted between the two groups (MK = 0.591 ± 0.501 mm; NK = 0.439 ± 0.417 mm, p = 0.618). No SSD in stiffness was noted between the two groups (MK = 32.87 ± 6.31 N/mm; NK = 27.98 ± 9.69 N/mm, p = 0.120). No SSD in ultimate load to failure was noted between the two groups (MK = 501.2 ± 126.1 N; NK = 416.8 ± 120.0 N, p = 0.116). Conclusion: There was no statistically significant different between knotless versus knotted medial row double row rotator cuff repair constructs using suture tape in regard to displacement across the repair site, stiffness and ultimate load to failure. Despite previous evidence suggesting inferiority of knotless medial row technique using suture constructs, this evidence may support the biomechanical equivalency of knotless medial row technique using suture tape.

Original languageEnglish (US)
Pages (from-to)S378-S382
JournalJournal of Clinical Orthopaedics and Trauma
Volume11
DOIs
StatePublished - May 2020

Keywords

  • Double row
  • Knotless fixation
  • Rotator cuff
  • Suture tape

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Is it necessary to tie the medial row in rotator cuff repair double-row constructs when using suture tape?'. Together they form a unique fingerprint.

Cite this