Background: Arthroscopic repair has been recommended for young patients with full-thickness rotator cuff tear (RCT), but the healing rates raise concern. The SCOI (Southern California Orthopedic Institute) row has been developed over three decades of experience, which reported an excellent clinical outcome. However, studies that focus purely on a younger patient population remains limited in number. The current study aims to discuss the initial tendon-to-bone healing after repairing full-thickness RCT with SCOI row method in young cohort.
Methods: Patients younger than 55 years who had a full-thickness RCT and underwent an arthroscopic repair with SCOI row method were reviewed. Clinical outcome were assessed at baseline, 3 and 6 months post-operatively. Visual analog scale (VAS), University of California at Angeles (UCLA) scale and Constant-Murley score were completed to assess pain and function. Active range of motion was also examined, including abduction and flexion of the involved shoulder. Preoperative MRI was performed to assess the condition of torn tendon, while postoperative MRIs in 3 and 6 months post-operatively were carried out to assess the tendon-to-bone healing. Repeated measurement ANOVA and chi-square test were used where applicable.
Results: 89 patients (57 males and 32 females) who met the criteria were including in the study, with a mean age of 44.14 ± 8.638 years. Compared with baseline, clinical outcome was significantly improved in 3 and 6 months post operation, supported by improvement in VAS, UCLA score and Constant-Murley score, as well as range of motions. Greater improvement was also noted in 6-month postoperative assessment than 3-month postoperative assessment. Three- and six-month postoperative MRI demonstrated an intact repair in all shoulders, and regeneration of the footprint, which supported the manifestation of tendon-to-bone healing. The mean thickness of regeneration tissue was 7.35±0.76mm when measured in 3-month postoperative MRI, and 7.75±0.79mm in 6-month MRI, which showed statistical difference (P=0.002). The total satisfactory rate reached 93.3%.
Conclusion: Arthroscopic primary rotator cuff repair of fullthickness RCT with SCOI row method in patients aged younger than 55 years provides excellent clinical outcomes and rapid regeneration of footprint.

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Posted 29 Jan, 2021
On 30 Jan, 2021
Received 29 Jan, 2021
On 23 Jan, 2021
On 22 Jan, 2021
Received 22 Jan, 2021
On 20 Jan, 2021
Invitations sent on 20 Jan, 2021
On 20 Jan, 2021
On 20 Jan, 2021
On 08 Dec, 2020
Posted 29 Jan, 2021
On 30 Jan, 2021
Received 29 Jan, 2021
On 23 Jan, 2021
On 22 Jan, 2021
Received 22 Jan, 2021
On 20 Jan, 2021
Invitations sent on 20 Jan, 2021
On 20 Jan, 2021
On 20 Jan, 2021
On 08 Dec, 2020
Background: Arthroscopic repair has been recommended for young patients with full-thickness rotator cuff tear (RCT), but the healing rates raise concern. The SCOI (Southern California Orthopedic Institute) row has been developed over three decades of experience, which reported an excellent clinical outcome. However, studies that focus purely on a younger patient population remains limited in number. The current study aims to discuss the initial tendon-to-bone healing after repairing full-thickness RCT with SCOI row method in young cohort.
Methods: Patients younger than 55 years who had a full-thickness RCT and underwent an arthroscopic repair with SCOI row method were reviewed. Clinical outcome were assessed at baseline, 3 and 6 months post-operatively. Visual analog scale (VAS), University of California at Angeles (UCLA) scale and Constant-Murley score were completed to assess pain and function. Active range of motion was also examined, including abduction and flexion of the involved shoulder. Preoperative MRI was performed to assess the condition of torn tendon, while postoperative MRIs in 3 and 6 months post-operatively were carried out to assess the tendon-to-bone healing. Repeated measurement ANOVA and chi-square test were used where applicable.
Results: 89 patients (57 males and 32 females) who met the criteria were including in the study, with a mean age of 44.14 ± 8.638 years. Compared with baseline, clinical outcome was significantly improved in 3 and 6 months post operation, supported by improvement in VAS, UCLA score and Constant-Murley score, as well as range of motions. Greater improvement was also noted in 6-month postoperative assessment than 3-month postoperative assessment. Three- and six-month postoperative MRI demonstrated an intact repair in all shoulders, and regeneration of the footprint, which supported the manifestation of tendon-to-bone healing. The mean thickness of regeneration tissue was 7.35±0.76mm when measured in 3-month postoperative MRI, and 7.75±0.79mm in 6-month MRI, which showed statistical difference (P=0.002). The total satisfactory rate reached 93.3%.
Conclusion: Arthroscopic primary rotator cuff repair of fullthickness RCT with SCOI row method in patients aged younger than 55 years provides excellent clinical outcomes and rapid regeneration of footprint.

Figure 1

Figure 2

Figure 3
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