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Table 4 Summarizes advantages and disadvantages of currently reported technique of medial trapezius tendon transfer; AC acromio-clavicular joint, ex-SALT extra-articular soft arthroscopic Latarjet technique, GH gleno-humeral, RC rotator cuff, SSP supraspinatus

From: Rotator cuff irreparability or failure of repair (re-tear): technical note on middle trapezius tendon transfer for reproduction of supraspinatus function

Advantages:
∙ More-anatomic dynamic reproduction of SSP function
∙ Re-normalized GH kinematics (centralized humeral head over the glenoid)
∙ Avoidance of mechanical block of the tendon reconstruct
∙ Effective reproduction of anatomic RC footprint
∙ Preserved scapular kinematics
∙ Versatile indications
∙ Technical simplicity, familiarity, safety & reproducibility
∙ Interposed hamstring sheet is to minimize sub-periosteal trapezius dissection, tension over the reconstruct and displacement of related neuro-vasculatures
∙ No violation of AC joint
∙ Feasibility of arthroscopic-assisted modality of the technique
∙ Feasible concurrent GH reconstructive procedures (e.g. latissimus dorsi transfer, ex-SALT)
∙ Accelerated postoperative rehabilitation
∙ Relatively-easy revision
Limitations:
∙ Possible seroma formation
∙ Relatively higher risk of post-operative infection
∙ Technical irreproducibility in trapezius muscle paralysis
∙ Multiple re-attachment interfaces
∙ No biomechanical validation
∙ No related electrophysiological evidence
∙ No long-term cohort clinical studies
∙ Unclear biomechanical consequences on nearby cervical spine