Coracoid Tunnel Widening After ACJ Tight Rope Fixation

The Correlation Between Coracoid Tunnel Dilatation and Loss of Reduction After Arthroscopic Acromioclavicular Fixation Using Tightrope System, A CT Based Study

studying coracoid tunnel widening after arthroscopic fixation of acute acromioclavicular joint (ACJ) dislocation using TightRope system and its correlation with loss of reduction and the functional scores.

Abstract Purpose: To detect coracoid tunnel widening after arthroscopic fixation of acute acromioclavicular joint (ACJ) dislocation using TightRope system and its correlation with loss of reduction and the functional scores.

Methods: From July 2016 to Dec 2018, a prospective study was performed at our hospital. Twenty-three patients with acute grade III-V ACJ dislocation were included in the study. Arthroscopic double tight-rope repair of the ACJ was performed. Coracoid tunnel widening was measured by computed tomography (CT) and coraco-clavicular distance was measured on the x-ray immediately post-operative and at 12 months. Constant Shoulder Score, Oxford Shoulder Score, Nottingham Clavicle Score and Visual analogue scale were used as outcome measures at 12 months.

Level of evidence IV Keywords Acute acromioclavicular joint injury . TightRope . Coracoid tunnel dilatation. Loss of reduction.

Inclusion Criteria:

• patients with acute (≤ 3 weeks after injury) Rockwood grade III-V ACJ dislocation

Exclusion Criteria:

• Patients with associated coracoid fracture, associated rotator cuff tears or glenohumeral arthritis