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Related Concept Videos

Muscles that Move the Arm01:31

Muscles that Move the Arm

Nine muscles are involved in arm movements. Two of these, the pectoralis major and latissimus dorsi, originate from the axial skeleton and are called axial muscles. The other seven originate from the scapula and are called the scapular muscles.
The pectoralis major has two origins. Its clavicular head originates on the medial half of the clavicle. In contrast, the sternocostal head originates on the costal cartilages of ribs 1-6, the sternum, and the aponeurosis of the external oblique of the...

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Related Experiment Video

Updated: May 10, 2026

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears
05:25

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears

Published on: January 23, 2026

Current biomechanical concepts for rotator cuff repair.

Thay Q Lee1

  • 1Orthopaedic Biomechanics Laboratory, Long Beach VA Healthcare System, Long Beach & Department of Orthopaedic Surgery, University of California, Irvine, CA 90822, USA. tqlee@med.va.gov

Clinics in Orthopedic Surgery
|June 5, 2013
PubMed
Summary

Rotator cuff repair has advanced with arthroscopy, focusing on biomechanical strength and footprint contact. Optimizing fixation strength is key for healing and rehabilitation after rotator cuff tears.

Keywords:
BiomechanicsLoad to failureRotator cuff repairTransosseous-equivalent

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Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears
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Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears

Published on: March 6, 2026

Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering
  • Sports Medicine

Background:

  • Rotator cuff tear repair has evolved significantly with arthroscopic techniques, suture anchors, and instrumentation.
  • Biomechanical focus is on increasing fixation strength and restoring footprint contact for early rehabilitation and improved healing.
  • Factors influencing repair integrity include tendon-footprint motion, contact area/pressure, and tissue quality, while intrinsic/extrinsic factors can compromise healing.

Purpose of the Study:

  • To review and discuss the biomechanical concepts underpinning current arthroscopic rotator cuff repair techniques.
  • To highlight the importance of fixation strength in optimizing rotator cuff repair outcomes.
  • To explore various repair strategies and construct configurations aimed at improving healing and longevity.

Main Methods:

  • Review of biomechanical studies on rotator cuff repair.
  • Analysis of factors affecting structural integrity and healing response.
  • Discussion of devices, knots, and configurations for enhanced contact characteristics.

Main Results:

  • Initial fixation strength is a critical factor in optimizing rotator cuff repair.
  • Numerous biomechanical studies aim to identify the strongest repair constructs.
  • Understanding biomechanical principles is essential for improving arthroscopic rotator cuff repair.

Conclusions:

  • Advances in arthroscopy have significantly improved rotator cuff repair.
  • Biomechanical principles guide the development of stronger and more effective repair techniques.
  • Optimizing fixation strength and footprint contact remains paramount for successful rotator cuff healing and function.