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Transacromial Knowles Pin in the Treatment of Neer Type 2 Distal Clavicle FracturesA Prospective Evaluation of 32 Cases

Overview
Journal J Trauma
Specialty Emergency Medicine
Date 2004 Jun 5
PMID 15179253
Citations 17
Authors
Cheng-Yuh Fann
Fang-Yao Chiu
Tien-Yow Chuang
Chuan-Mu Chen
Tain-Hsiung Chen
Affiliations
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Abstract

Background: The high rate of non-union makes surgical intervention necessary for a distal clavicle fracture. This report presents the outcome of a simple surgical method using a transacrominal Knowles pin for this unstable fracture.

Methods: In this study, 32 patients with Neer type 2 distal clavicle fractures were treated using a single transacromial Knowles pin without repair of the torn ligament. All 32 patients were studied prospectively and followed up for a mean of 80 months (range, 12-132 months). The clinical outcome was evaluated with the UCLA score, and the fracture union was judged roentgenographically.

Results: All the patients showed excellent results with solid union. The mean union time was 6.8 weeks (range, 4-12 weeks). No major complication was noted, and only one asymptomatic acromioclavicular arthrosis developed.

Conclusions: Single transacrominal Knowles pin fixation offers a simple and safe method for treating patients with displaced Neer type 2 distal clavicle fractures.

Citing Articles

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Tsai T, Hsu S, Hsu C, Liao C, Lu Y Arch Orthop Trauma Surg. 2025; 145(1):111.

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Open coraco-clavicular ligament reconstruction (CCLR) in treatment of displaced distal clavicle fractures has low complication rate and excellent union rate: a systematic review.

Malik S, Malik S, Tahir M, Jordan R, Laprus H, DAlessandro P Arch Orthop Trauma Surg. 2022; 143(3):1459-1477.

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Treatment of unstable distal clavicle fractures (Neer type IIb): a modified system using a miniature locking plate with a single button.

Ying H, Wang J, Sun Y, Dai K, Yu C, Yang F J Int Med Res. 2021; 49(6):3000605211022505.

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Current Concepts for Classification and Treatment of Distal Clavicle Fractures.

Kim D, Kim D, Kim B, Cho C Clin Orthop Surg. 2020; 12(2):135-144.

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Distal Clavicle Fracture Repair: Clinical Outcomes of a Surgical Technique Utilizing a Combination of Cortical Button Fixation and Coracoclavicular Ligament Reconstruction.

Yagnik G, Jordan C, Narvel R, Hassan R, Porter D Orthop J Sports Med. 2019; 7(9):2325967119867920.

PMID: 31579680 PMC: 6757504. DOI: 10.1177/2325967119867920.