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Related Experiment Videos

Partial posteromedial olecranon resection: a kinematic study.

S Kamineni1, H Hirahara, S Pomianowski

  • 1Department of Orthopedic Surgery, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.

The Journal of Bone and Joint Surgery. American Volume
|June 5, 2003
PubMed
Summary

Resecting normal bone from the olecranon in throwing athletes increases elbow valgus angulation and may strain the medial collateral ligament. Limit bone removal to osteophytes only.

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Biomechanics

Background:

  • The posteromedial olecranon is prone to impingement and osteophyte formation in throwing athletes.
  • Surgical débridement often involves resecting osteophytes and normal olecranon bone.
  • The kinematic effects of resecting varying amounts of normal olecranon bone are not well-documented.

Purpose of the Study:

  • To investigate the kinematic effects of posteromedial olecranon resections.
  • To determine if excessive bone resection alters elbow kinematics.
  • To identify an optimal amount of olecranon resection, if any.

Main Methods:

  • Twelve cadaveric elbows were tested using an electromagnetic tracking device.
  • Valgus and varus torques were applied to the elbows.

Related Experiment Videos

  • Sequential posteromedial olecranon resections were performed in 3-mm increments (0-9 mm).

    • Main Results:

    • Posteromedial olecranon resection led to stepwise increases in elbow valgus angulation under valgus torque.
    • A 9-mm resection showed a marked increase in valgus angulation.
    • Increased resection decreased absolute internal rotation or caused external rotation of the ulna.

    Conclusions:

    • No critical resection amount was identified, but all resections increased valgus angulation.
    • Removing normal olecranon bone may increase medial collateral ligament strain in throwing athletes.
    • Recommendations include limiting olecranon bone removal to osteophytes, avoiding normal bone resection.