Prevention of Ulnar Collateral Ligament (UCL) Injuries in Minor League Pitchers

Not Applicable

• Conditions: Elbow Injuries; Sprain Ulnar Collateral Ligament; Upper Extremity Injuries; Strain of Ulnar Collateral Ligament; Complete Tear Ulnar Collateral Ligament
• Interventions: Other: Strengthening program; Other: Exercise program

• Registration Number: NCT02749760
• Lead Sponsor: University of Kansas Medical Center

Brief Summary

This is a study of the muscle stabilizers of the elbow with respect to the prevention of Ulnar Collateral Ligament (UCL) injuries in pitchers. Pitchers are assessed at spring training and end of season for approximately 5 years. Pronator, flexor digitoum superficialis (FDS), and wrist flexion strength will be measured and correlated with upper extremity injuries and time missed from pitching. The investigators will also be measuring loss of strength over the season. The goal is to learn whether strength in these muscles prevents UCL injuries and finally whether these muscles can be strengthened to avoid such injuries.

Detailed Description

The goal of this study is to assess whether the strengths of the secondary muscular stabilizers toward valgus stress at the elbow, the wrist flexors, flexor digitorum superficialis, and pronator teres emanating from the medial epicondyle, affect the incidence of ulnar collateral ligament injuries of the elbows in pitchers. Pitchers in the minor leagues of a single professional baseball club will have the strength of these secondary muscular stabilizers assessed and then correlated to ulnar collateral ligament injuries and time missed from baseball season and subsequent seasons. A secondary goal is to assess whether strengthening exercises targeted toward these muscular stabilizers of the elbow can decrease the incidence of ulnar collateral ligament injuries in young baseball pitchers. This could impact the field by changing the emphasis from reconstruction and rehabilitation of ulnar collateral ligament injuries to prevention.

Study Timeline

• Study Start: 2014-02
• Study First Submitted: 2016-04-11
• Study First Submitted QC: 2016-04-20
• Study First Posted: 2016-04-25
• Status Verified: 2019-10
• Last Update Submitted: 2019-10-31
• Last Update Posted: 2019-11-01
• Primary Completion: 2020-10
• Study Completion: 2020-10

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: Male
• Target Recruitment: 175

Inclusion Criteria

• Pitchers that are currently on a minor league baseball team.

Exclusion Criteria

• Pitchers that currently have upper extremity injuries or are in active rehab for upper extremity injury.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Minor league pitchers	Exercise program	Minor league pitchers from a single professional baseball organization. Strength tests of the elbows will be administered at spring training and end of season for 5 years. If strength correlates to injury, strengthening and exercise programs may be established to target the stabilizers of the elbows.
Minor league pitchers	Strengthening program	Minor league pitchers from a single professional baseball organization. Strength tests of the elbows will be administered at spring training and end of season for 5 years. If strength correlates to injury, strengthening and exercise programs may be established to target the stabilizers of the elbows.

Primary Outcome Measures

Name	Time	Method
The Correlation of Strength to UCL Injuries in Minor League Pitchers	5 years	After measuring strength of elbow stabilizers for up to five years, we will determine whether strength correlates with UCL injuries.

Secondary Outcome Measures

Name	Time	Method
The Diminution of Strength in Minor League Pitchers	5 years	We will measure the diminution of strength over the course of a baseball season.

Trial Locations

Locations (1)

University of Kansas Medical Center; 🇺🇸 Kansas City, Kansas, United States