Shoulder
Long-term follow-up of total shoulder replacement surgery with inset glenoid implants for arthritis with deficient bone

https://doi.org/10.1016/j.jse.2019.01.020Get rights and content

Background

Total shoulder replacement surgery has been a successful treatment for patients with shoulder arthritis. However, long-term results are limited by complications such as glenoid loosening, wear, and instability. Also, glenoid bone deficiency limits available treatment options and outcomes. Successful short-term outcomes have been reported previously using inset glenoid implants for deficient arthritic bone, but long-term outcomes have not been reported using this technique.

Methods

A retrospective analysis was performed on 21 of 24 consecutive patients treated with inset glenoid implants for severe glenohumeral joint arthritis with bone deficiency with prospectively collected data. Inclusion criteria were patients with shoulder arthritis and severe glenoid bone deficiency, defined by perpendicular glenoid vault depth less than 15 mm. No bone grafts were used. All patients were evaluated preoperatively and after surgery with physical examination, radiographic studies, and outcome measures. There were 10 males and 11 females, 17 cases with osteoarthritis and 4 with inflammatory arthritis, and 5 patients with rotator cuff tears (3 full thickness and 2 partial tears). Mean age was 68 years.

Results

There were no surgical complications. At a mean follow-up of 8.7 years, there were statistically significant improvements (P < .001) in visual analog pain scores (7.7 to 0.1), American Shoulder and Elbow Surgeons outcome scores (23 to 95), and range of motion. There were no loose glenoids. No patients required any revision surgery.

Conclusions

This study documents the long-term efficacy and safety of total shoulder replacement surgery with inset glenoid implants used to reconstruct deficient, arthritic glenoid bone.

Section snippets

Materials and methods

We retrospectively studied 24 patients on whom the senior author performed total shoulder replacement with inset glenoid implants for severely deficient bone between 2005 and 2009. Twenty-one of these patients were still alive and available for follow-up. Minimum follow-up was 6 years. Fourteen patients returned to clinic for full clinical follow-up including final XRs, and 7 patients could only be reached by phone for final outcome scores. Two patients died during the study period, and 1

Results

In this cohort of 24 consecutive surgeries performed with inset glenoid implants for deficient bone between 2005 and 2009, 21 patients were located for the final follow-up. Mean follow-up on these 21 patients was 104 months (range, 76-142 months). All patients were right hand dominant. The affected shoulders were the right dominant shoulder in 6 cases and left in 15 (Table I). Patient age ranged from 49 to 83 years with a mean age of 68 years. The average retroversion was 18° and the average

Discussion

This long-term study is a retrospective review of 21 of 24 consecutive surgeries with inset glenoid implants performed in patients with shoulder arthritis and severely deficient glenoid bone between 2005 and 2009. Our previous short-term study on a smaller cohort of patients with a minimum 3-year follow-up showed excellent results on these difficult patients,10 but there are no long-term results available in the literature using this new inset technique. The goal of this study was to evaluate

Conclusion

This inset glenoid fixation technique offers an innovative approach to a difficult clinical conundrum of shoulder arthritis with deficient glenoid bone. In this series, there were no complications, no cases of glenoid implant loosening, and no revision surgeries performed at a mean 8.7-year follow-up. This technique is also safe, because there is only minimal penetration of the glenoid surface bone. Finally, the technique is simple and easily reproducible. It is a reasonable alternative to

Acknowledgment

We thank Dr. William W. Bowen, orthopedic surgeon, for his independent review and analysis of the radiographic studies.

Disclaimer

Stephen B. Gunther is founder and partial owner of Shoulder Innovations, Inc., which owns intellectual property related to the subject of this article.

Sterling K. Tran and his immediate family, and any research foundations with which he is affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this article.

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This study received IRB approval from Sterling International Review Board (IRB Study Number: ID 6073).

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