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Published on: September 13, 2020
Assessment of clavicular translation after arthroscopic Mumford procedure: direct versus indirect resection--a
Craig A Miller1, Bernard C Ong, Laith M Jazrawi
1Department of Orthopaedic Surgery, New York University-Hospital for Joint Diseases, New York, New York 10003, USA.
Purpose:
To compare the horizontal stability of the distal clavicle following arthroscopic resection of its lateral end by direct and indirect techniques.
Type Of Study:
Biomechanical test of cadaveric specimens.
Methods:
We performed arthroscopic distal clavicle resection on 12 fresh-frozen human cadaveric shoulders using direct (group 1, n = 6) or indirect (group 2, n = 6) approaches. In both groups 5 mm of distal clavicle were resected using an arthroscopic burr. The specimens were mounted on a materials testing device that allowed translation of the clavicle along the anteroposterior axis. The degree of posterior translation was measured from maximum anterior displacement of the clavicle.
Results:
Mean posterior translation was 19.4 mm (range, 18 to 23 mm; SD, 2.2) and 21.3 mm (range, 18 to 25 mm; SD, 3.1) for groups 1 and 2, respectively. This difference was not statistically significant ( P = .27).
Conclusions:
This study suggests that there is no significant difference in anteroposterior stability of the clavicle following arthroscopic distal clavicle resection with either a direct or indirect approach.
Clinical Relevance:
Clinically, this study addresses concerns about increased potential instability associated with the indirect technique of distal clavicle resection. From a biomechanical standpoint, based on this study, there is no concern for increased instability with the indirect technique of distal clavicle resection compared to a direct technique.
