Acute Traumatic Swan Neck Deformity: A Case Report of the Oblique Retinacular Ligament Lesion

Checcucci, Giuseppe; Biondi, Marco; Faccio, Marina; Zampetti, Piergiuseppe; Galeano, Mariarosaria; Ceruso, Massimo

doi:10.1142/s0218810417720236

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…It will create an extension lag which the DIP joint couldn't reach maximum DIP joint extension. The acute traumatic mallet finger presented by the terminal extensor tendon presents anatomical disruption, like the basketball player who caught a ball with the tip of finger while the PIP and DIP joint is in active extension [ 16 ]. Zancolli has classified the post-traumatic mallet finger into three categories: extrinsic, intrinsic, and articular [ 17 , 18 ].…”

Section: Discussionmentioning

confidence: 99%

Terminal extensor tendon reconstruction as a reliable options for chronic mallet finger with swan neck deformity of index finger: A case report

Sandjaya¹,

Prabowo²,

Patih³

2022

Annals of Medicine &Amp; Surgery

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Section: Discussionmentioning

confidence: 99%

Terminal extensor tendon reconstruction as a reliable options for chronic mallet finger with swan neck deformity of index finger: A case report

Sandjaya¹,

Prabowo²,

Patih³

2022

Annals of Medicine &Amp; Surgery

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The retinacular ligaments of the digital extensor expansion revisited: An anatomical and biomechanical study

Borgström,

Dahlin,

Tranum‐Jensen

2023

Clinical Anatomy

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Our aim was to clarify the anatomy and function of the retinacular ligaments. Forty‐eight fingers were dissected and the thickness of the oblique retinacular ligament (ORL) was graded. In four fingers, the motion in the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints was subjected to an in‐depth analysis before and after sectioning of either the lateral bands (LB) or the ORLs. The function of the ORLs in restricting flexion of the DIP joint with full extension of the PIP joint was measured in 10 fingers. An ORL could be identified on both sides in all 48 fingers. The distribution of the insertion on the proximal phalanx was 7/96 (7%) in the distal third, 70/96 (73%) in the middle third and 19/96 (20%) in the proximal third. Among the specimens, 29% were graded as having a strong bundle of fibers, 51% as having well‐defined and regular fibers and 20% as having thin and sparse fibers. With the PIP joint extended, there was a statistically significant increase in flexion of the DIP joint after the ORL was cut. After the LB was sectioned, the ORL was able to extend the DIP joint with an extension lag of 10–22°. Cutting the ORL did not affect the ability to extend that joint. We conclude that the retinacular ligaments are consistent. Their major role is not connected with finger movement, but to provide stabilizing links between the PIP and DIP joints. They are active in not only specific, uncommon finger positions but also in ordinary use of the fingers.

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Acute Traumatic Swan Neck Deformity: A Case Report of the Oblique Retinacular Ligament Lesion

Cited by 2 publications

References 6 publications

Terminal extensor tendon reconstruction as a reliable options for chronic mallet finger with swan neck deformity of index finger: A case report

Terminal extensor tendon reconstruction as a reliable options for chronic mallet finger with swan neck deformity of index finger: A case report

The retinacular ligaments of the digital extensor expansion revisited: An anatomical and biomechanical study

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