Editorial Commentary: Superior Capsular Reconstructions in Cases of Irreparable Rotator Cuff Tendons Only Partially...

Area of Science:

• Orthopedic Surgery
• Biomechanics
• Sports Medicine

Background:

• Superior capsular reconstruction (SCR) and anterior cable reconstruction are surgical techniques aimed at restoring shoulder function.
• These procedures focus on biomechanically restoring a fulcrum to aid pain control and optimize function.
• Maintaining joint cartilage is a secondary goal, though fully restoring native joint loads with SCR in cases of persistent tendon insufficiency is not expected.

Discussion:

• Biomechanical studies using motion tracking and pressure mapping demonstrate that shoulder capsular reconstructions can restore glenohumeral abduction, control superior humeral head migration, and optimize deltoid forces and glenohumeral contact pressure towards normal values.
• The principle of preserving native anatomy is paramount for enhancing joint functional longevity.
• Anatomy-based reconstructions are presented as a favored goal over nonanatomic joint replacement, such as reverse total shoulder arthroplasty.

Key Insights:

• Shoulder capsular reconstructions can achieve near-normal biomechanical parameters.
• Anatomy-based reconstruction is prioritized for long-term joint health.
• Dynamic actuators and real-time measurement tools are crucial for evaluating these reconstructions.

Outlook:

• Anatomy-based reconstructions like SCR and anterior cable reconstruction may become the preferred primary treatment as surgical techniques and medical innovations advance.
• Nonanatomic arthroplasty, while a clinically viable option, should be considered a last resort.
• Further research and development in surgical techniques and biomaterials will enhance the efficacy of capsular reconstructions.