Original Article
Single-Row Versus Double-Row Arthroscopic Rotator Cuff Repair: A Prospective Randomized Clinical Study

https://doi.org/10.1016/j.arthro.2008.09.018Get rights and content

Purpose

The purpose of this study was to compare the clinical outcome of arthroscopic rotator cuff repair with single-row and double-row techniques.

Methods

Eighty patients with a full-thickness rotator cuff tear underwent arthroscopic repair with suture anchors. They were divided into 2 groups of 40 patients according to repair technique: single row (group 1) or double row (group 2). Results were evaluated by use of the Disabilities of the Arm, Shoulder and Hand (DASH) and Work-DASH self-administered questionnaires, normalized Constant score, and muscle strength measurement. On analyzing the results at a 2-year follow-up, we considered the following independent variables: baseline scores; age; gender; dominance; location, shape, and area of cuff tear; tendon retraction; fatty degeneration; treatment of biceps tendon; and rotator cuff repair technique (anchors or anchors and side to side). Univariate and multivariate statistical analyses were performed to determine which variables were independently associated with the outcome. Significance was set at P < .05.

Results

Of the patients, 8 (10%) were lost to follow-up. Comparison between groups did not show significant differences for each variable considered. Overall, according to the results, the mean DASH scores were 15.4 ± 15.6 points in group 1 and 12.7 ± 10.1 points in group 2; the mean Work-DASH scores were 16.0 ± 22.0 points and 9.6 ± 13.3 points, respectively; and the mean Constant scores were 100.5 ± 17.8 points and 104.9 ± 21.8 points, respectively. Muscle strength was 12.7 ± 5.7 lb in group 1 and 12.9 ± 7.0 lb in group 2. Univariate and multivariate analysis showed that only age, gender, and baseline strength significantly and independently influenced the outcome. Differences between groups 1 and 2 were not significant.

Conclusions

At short-term follow-up, arthroscopic rotator cuff repair with the double-row technique showed no significant difference in clinical outcome compared with single-row repair.

Level of Evidence

Level I, high-quality randomized controlled trial with no statistically significant differences but narrow confidence intervals.

Section snippets

Methods

For this study, we enlisted 80 patients with a full-thickness rotator cuff tear who accepted our invitation to enter the study and who signed an agreement disclosure form. In all cases the lesion was diagnosed preoperatively with a magnetic resonance imaging (MRI) study of the affected shoulder. Inclusion criteria for the study group were patients with a repairable full-thickness tear of the supraspinatus or the posterior-superior rotator cuff. Patients with rotator interval involvement or

Results

The mean follow-up was 24.8 ± 1.4 months. We lost 8 patients to follow-up, 3 from group 1 and 5 from group 2. We did not determine the causes for their lack of follow-up participation. The final evaluation was thus carried out in 72 patients. There were 34 men and 38 women. The age ranged between 41 and 74 years (mean age, 56.8 ± 8.7 years). Comparison between groups did not show significant differences between them for each independent variable (Table 1).

Comparison between groups did not show

Discussion

One of the most common complications of arthroscopic rotator cuff repair is rerupture.3, 4 Partial or complete failure of repair does not seem to be correlated with functional outcome31; however, tendon healing is significantly correlated with postoperative strength.4 Among the factors that have been investigated as predictors of durability of rotator cuff repair, primary fixation of tendon to bone is considered a success key of the procedure. For this reason, many different suture

Conclusions

At short-term follow-up, arthroscopic repair of full-thickness rotator cuff tears with the double-row technique showed no significant difference in clinical outcome compared with single-row repair.

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    The authors report no conflict of interest. Drs. Grasso and Milano contributed equally to the paper.

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