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Related Concept Videos

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Related Experiment Video

Updated: Apr 20, 2026

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft
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Upper limb kinematics after arthroscopic and open shoulder stabilization.

Ofir Uri1, Moshe Pritsch2, Ariel Oran2

  • 1Department of Orthopedic Surgery, Sheba Medical Center, Tel Hashomer, Israel; Department of Physical Therapy, Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

Journal of Shoulder and Elbow Surgery
|December 3, 2014
PubMed
Summary

Shoulder stabilization surgery impacts arm movement quality. Arthroscopic surgery patients showed movement smoothness similar to healthy controls, unlike those undergoing open surgery.

Keywords:
Arm kinematicsarthroscopic Bankart repairopen capsular shiftshoulder stabilization

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Area of Science:

  • Biomechanics
  • Orthopedic Surgery
  • Neuroscience

Background:

  • Shoulder joint stability is crucial for proprioception, typically assessed by static repositioning accuracy.
  • Existing methods overlook the quality of ongoing arm movements, particularly smoothness.
  • This study introduces kinematic descriptors to evaluate movement quality post-shoulder stabilization surgery.

Purpose of the Study:

  • To compare arm movement quality between healthy individuals and patients after arthroscopic or open shoulder stabilization.
  • To investigate if arthroscopic shoulder stabilization results in movement kinematics closer to healthy controls compared to open surgery.

Main Methods:

  • Compared 14 healthy controls, 10 patients post-arthroscopic stabilization, and 12 post-open stabilization.
  • Subjects performed 135 unconstrained 3D pointing movements without visual feedback of their arm.
  • Analyzed hand tangential velocity to compute smoothness metrics: acceleration-to-movement time ratio, peak-to-mean velocity ratio, and number of velocity peaks.

Main Results:

  • Healthy controls and arthroscopic stabilization patients exhibited similar smoothness metrics (acceleration-to-movement time and peak-to-mean velocity ratios).
  • Both groups differed significantly from the open shoulder stabilization group in these smoothness measures.
  • Velocity peak distributions were similar between controls and arthroscopic patients, but differed from open surgery patients.

Conclusions:

  • Movement quality, assessed by smoothness, in patients after arthroscopic shoulder stabilization is comparable to healthy individuals.
  • Patients undergoing open shoulder stabilization demonstrate inferior movement quality compared to healthy controls.
  • Smoothness-related kinematic analysis provides valuable insights into functional recovery after shoulder stabilization procedures.