Anatomic stemless shoulder arthroplasty and related outcomes: a systematic review

BMC Musculoskelet Disord. 2016 Aug 30;17(1):376. doi: 10.1186/s12891-016-1235-0.


Background: The latest generation of shoulder arthroplasty includes canal-sparing respectively stemless designs that have been developed to allow restoration of the glenohumeral center of rotation independently from the shaft, and to avoid stem-related complications. The stemless prosthesis design has also recently been introduced for use in reverse arthroplasty systems.

Methods: We systematically reviewed the literature for studies of currently available canal-sparing respectively stemless shoulder arthroplasty systems. From the identified series, we recorded the indications, outcome measures, and humeral-sided complications.

Results: We identified 11 studies of canal-sparing respectively stemless anatomic shoulder arthroplasty implants, published between 2010 and 2016. These studies included 929 cases, and had a mean follow-up of 26 months (range, 6 to 72 months). The rates of humeral component-related complications ranged between 0 and 7.9 %. The studies reported only a few isolated cases of complications of the humeral component. Some arthroplasty systems are associated with radiological changes, but without any clinical relevance.

Conclusions: All of the published studies of canal-sparing respectively stemless shoulder arthroplasty reported promising clinical and radiological outcomes in short to midterm follow-up. Long-term studies are needed to demonstrate the long-term value of these kind of implants.

Keywords: Canal-sparing; Posttraumatic shoulder arthritis; Shoulder arthritis; Shoulder arthroplasty; Stemless; Total shoulder arthroplasty.

Publication types

  • Review
  • Systematic Review

MeSH terms

  • Arthroplasty, Replacement / adverse effects
  • Arthroplasty, Replacement / instrumentation*
  • Arthroplasty, Replacement / methods
  • Humans
  • Humerus
  • Joint Prosthesis*
  • Osteoarthritis / surgery*
  • Postoperative Complications / epidemiology*
  • Prosthesis Design*
  • Radiography
  • Shoulder Joint / diagnostic imaging
  • Shoulder Joint / surgery*
  • Treatment Outcome