This retrospective cohort reviews 57 patients who underwent shoulder arthrodesis by a single surgeon using one standardized technique. A 10-hole 4.5 mm pelvic reconstruction plate was used in the 30-30-30 position. The study asks which patients actually benefit, using independent functional assessment of ADLs, satisfaction, and pain.
The clinical rule from this paper: outcome after shoulder arthrodesis is determined far more by who you operate on than by how you fuse the joint. Etiologic group alone explained 51% of the variance in function. Brachial plexus injury patients, osteoarthritis, and failed arthroplasty did well. Multidirectional instability patients did poorly across every metric.
Memorize the position: 30° abduction, 30° internal rotation, 30° flexion, with abduction measured from the side. The goal in BPI is to position the hand in space, so arthrodesis is not indicated if active motion already lets the patient position the hand.
The most important pitfall this paper documents: fusing a multidirectional instability shoulder does not fix it. Four of six still felt unstable and reported a mean pain score of 7.5 despite solid bony union, suggesting the dysfunction extends into the periscapular musculature and beyond the glenohumeral joint.
On technique, routine bone grafting is unnecessary, but consider it after failed total shoulder arthroplasty because of severe bone loss.
This retrospective cohort reviews 57 patients who underwent shoulder arthrodesis by a single surgeon using one standardized technique. A 10-hole 4.5 mm pelvic reconstruction plate was used in the 30-30-30 position. The study asks which patients actually benefit, using independent functional assessment of ADLs, satisfaction, and pain.
The clinical rule from this paper: outcome after shoulder arthrodesis is determined far more by who you operate on than by how you fuse the joint. Etiologic group alone explained 51% of the variance in function. Brachial plexus injury patients, osteoarthritis, and failed arthroplasty did well. Multidirectional instability patients did poorly across every metric.
Memorize the position: 30° abduction, 30° internal rotation, 30° flexion, with abduction measured from the side. The goal in BPI is to position the hand in space, so arthrodesis is not indicated if active motion already lets the patient position the hand.
The most important pitfall this paper documents: fusing a multidirectional instability shoulder does not fix it. Four of six still felt unstable and reported a mean pain score of 7.5 despite solid bony union, suggesting the dysfunction extends into the periscapular musculature and beyond the glenohumeral joint.
On technique, routine bone grafting is unnecessary, but consider it after failed total shoulder arthroplasty because of severe bone loss.