Arthroscopically assisted acromioclavicular joint stabilization leads to significant clavicular tunnel widening in the early post-operative period

Purpose Arthroscopically assisted acromioclavicular joint (ACJ) stabilization techniques use bone tunnels in the clavicle and coracoid process. The tunnel size has been shown to have an impact on the fracture risk of clavicle and coracoid. The aim of the present study was to radiographically evaluat...

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2019-12, Vol.27 (12), p.3821-3826
Main Authors: Thangaraju, Siva, Cepni, Serdar, Magosch, Petra, Tauber, Mark, Habermeyer, Peter, Martetschläger, Frank
Format: Article
Language:English
Subjects:
Acromioclavicular Joint - diagnostic imaging
Acromioclavicular Joint - injuries
Acromioclavicular Joint - surgery
Adult
Aged
Arthroscopy
Athletes
Calipers
Clavicle
Clavicle - diagnostic imaging
Female
Fractures
Humans
Joints (anatomy)
Male
Medicine
Medicine & Public Health
Middle Aged
Orthopedics
Postoperative Period
Radiographs
Radiography
Shoulder
Stabilization
Tunnel construction
Tunnels
Widening
Young Adult
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Summary:Purpose Arthroscopically assisted acromioclavicular joint (ACJ) stabilization techniques use bone tunnels in the clavicle and coracoid process. The tunnel size has been shown to have an impact on the fracture risk of clavicle and coracoid. The aim of the present study was to radiographically evaluate the alterations of the clavicular tunnel size in the early post-operative period. It was hypothesized that there would be a significant increase of tunnel size. Methods Twenty consecutive patients with acute high-grade ACJ (Rockwood type IV–V) injury underwent arthroscopic-assisted ACJ stabilization. The median age of the patients was 40 (26–66) years. For all patients, a single tunnel button–tape construct was used along with an additional ACJ tape cerclage. Radiologic measurements were undertaken on standardized Zanca films at two separate time points, immediate post-operative examination (IPO) and at late post-operative examination (> 4 months; LPO). The LPO radiographs were taken at a median follow-up period of 4.5 (3–6) months. Clavicular tunnel width (CT) and coracoclavicular distance (CCD) were measured using digital calipers by two independent examiners and the results are presented as median, range, and percentage. Results The median CCD increased significantly from 9.5 (8–13) mm at IPO to 12 (7–20) mm at LPO ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-019-05662-5