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Clin Orthop Relat Res. 2011 Sep;469(9):2496-504. doi: 10.1007/s11999-011-1811-4.

A complication-based learning curve from 200 reverse shoulder arthroplasties.

Author information

1
Department of Orthopaedic Surgery, William Beaumont Hospital, 3535 West Thirteen Mile Road Ste 744, Royal Oak, MI 48073, USA.

Abstract

BACKGROUND:

Reported early complication rates in reverse total shoulder arthroplasty have widely varied from 0% to 75% in part due to a lack of standard inclusion criteria. In addition, it is unclear whether revision arthroplasty is associated with a higher rate of complications than primary arthroplasty.

QUESTIONS/PURPOSE:

We therefore (1) determined the types and rates of early complications in reverse total shoulder arthroplasty using defined criteria, (2) characterized an early complication-based learning curve for reverse total shoulder arthroplasty, and (3) determined whether revision arthroplasties result in a higher incidence of complications.

PATIENTS AND METHODS:

From October 2004 to May 2008, an initial series of 200 reverse total shoulder arthroplasties was performed in 191 patients by a single surgeon. Forty of the 200 arthroplasties were revision arthroplasties. Of these, 192 shoulders were available for minimum 6-month followup (mean, 19.4 months; range, 6-49.2 months). We determined local and systemic complications and distinguished major from minor complications.

RESULTS:

Nineteen shoulders involved local complications (9.9%), including seven major and 12 minor complications. Nine involved perioperative systemic complications (4.7%), including eight major complications and one minor complication. The local complication rate was higher in the first 40 shoulders (23.1%) versus the last 160 shoulders (6.5%). Seven of 40 (17.5%) revision arthroplasties involved local complications, including two major and five minor complications compared to 12 of 152 (7.9%) primary arthroplasties, including five major and seven minor complications. Nerve palsies occurred less frequently in primary arthroplasties (0.6%) compared to revisions (9.8%).

CONCLUSIONS:

The early complication-based learning curve for reverse total shoulder arthroplasty is approximately 40 cases. There was a trend toward more complications in revision versus primary reverse total shoulder arthroplasty and more neuropathies in revisions.

LEVEL OF EVIDENCE:

Level IV, therapeutic study. See the guidelines online for a complete description of level of evidence.

PMID:
21328021
PMCID:
PMC3148393
DOI:
10.1007/s11999-011-1811-4
[Indexed for MEDLINE]
Free PMC Article

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