Ulnar collateral ligament injuries of the elbow

Mitchell, Carter; Cain, E. Lyle; Andrews, James R.

doi:10.1097/bco.0b013e3283060ebb

Current Orthopaedic Practice

2008

DOI: 10.1097/bco.0b013e3283060ebb

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Ulnar collateral ligament injuries of the elbow

Carter Mitchell¹,

E. Lyle Cain²,

James R. Andrews³

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2021

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“… 43 Patients with UCL injuries typically present with medial-sided elbow pain, ulnar nerve paresthesia, or an occasional locking or clicking sensation in the joint. 26 , 28 , 33 In most cases, conservative management is the first line of treatment. However, depending on the patient’s requirements or if they were to fail nonoperative treatment, surgical management may be indicated.…”

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Role of the transverse ligament of the ulnar collateral ligament of the elbow: a biomechanical study

et al. 2021

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Background The ulnar collateral ligament (UCL) complex of the elbow plays a primary role in valgus and posteromedial stability of the elbow. The anterior oblique ligament (AOL) of the UCL is believed to provide the majority of resistance to external forces on the medial elbow. The transverse ligament (TL) of the UCL is generally thought to have minimal contribution to the elbow’s overall stability. However, recent studies have suggested a more significant role for the TL. The primary aim of this study was to identify the TL’s contribution to the stability of the elbow joint in determining the joint stiffness and neutral zone variation in internal rotation. Methods Twelve cadaveric elbows, set at a 90° flexion angle, were tested by applying an internal rotational force on the humerus to generate a medial opening torque at the level of the elbow. The specimens were preconditioned with 10 cycles of humeral internal rotation with sinusoidal torque ranging from 0 to 5 Nm. Elbow stiffness measures and joint neutral zone were first evaluated in its integrity during a final ramp loading. The test was subsequently repeated after cutting the TL at 33%, 66%, and 100% followed by the AOL in the same fashion. Results The native UCL complex joint stiffness to internal rotation measured 1.52 ± 0.51 Nm/°. The first observable change occurred with 33% sectioning of the AOL, with further sectioning of the AOL minimizing the joint stiffness to 1.26 ± 0.32 Nm/° ( P = .004). A 33% resection of the TL found an initial neutral zone variation of 0.376 ± 0.23° that increased to 0.771 ± 0.41° ( P < .01) at full resection. These values were marginal when compared with the full resection of the AOL for which we have found 3.69 ± 1.65° ( P < .01). Conclusion The TL had no contribution to internal rotation elbow joint stiffness at a flexion angle of 90°. However, sequential sectioning of the TL was found to significantly increase the joint neutral zone when compared with the native cadaveric elbow at a flexion angle of 90°. This provides evidence toward the TL having some form of contribution to the elbow’s overall stability.

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confidence: 99%

Role of the transverse ligament of the ulnar collateral ligament of the elbow: a biomechanical study

et al. 2021

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Ulnar collateral ligament injuries of the elbow

Cited by 1 publication

References 20 publications

Role of the transverse ligament of the ulnar collateral ligament of the elbow: a biomechanical study

Role of the transverse ligament of the ulnar collateral ligament of the elbow: a biomechanical study

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