Reverse total shoulder (TESS) - high rate of glenoid loosening

http://shoulderarthritis.blogspot.mx/2014/01/reverse-total-shoulder-tess-high-rate.html

Tuesday, January 28, 2014

Reverse total shoulder (TESS) - high rate of glenoid loosening

Clinical and radiological outcome of the Total Evolutive Shoulder System (TESS®) reverse shoulder arthroplasty: a prospective comparative non-randomised study.

These authors reviewed 37 consecutive patients (40 shoulders) underwent TESS RSA (see figure below) between October 2007 and January 2012; 16 were stemless and 26 were stemmed. At a mean follow-up of 39 months (15-66) there were four glenoid loosenings. In 12 shoulders had developed scapular notching and seven already had scapular bone impression evident on initial post-operative radiographs.



Comment: We have no experience with this prosthesis. It appears that the quality of glenoid fixation with this system may be less robust than some other systems.

http://www.ncbi.nlm.nih.gov/pubmed/24458592

Int Orthop. 2014 Jan 24. [Epub ahead of print]

Clinical and radiological outcome of the Total Evolutive Shoulder System (TESS®) reverse shoulder arthroplasty: a prospective comparative non-randomised study.

Kadum B, Mukka S, Englund E, Sayed-Noor A, Sjödén G.

Author information

Abstract

PURPOSE:

The aims of this study were to assess the function and quality of life after the Total Evolutive Shoulder System (TESS) reverse shoulder arthroplasty (RSA), to evaluate the radiological stability of the stemless version and to address the effect of arm lengthening and scapular notching (SN) on the outcome.

METHODS:

This was a prospective comparative non-randomised study. A total of 37 consecutive patients (40 shoulders) underwent TESS RSA between October 2007 and January 2012; 16 were stemless and 26 were stemmed. At a mean follow-up of 39 months (15-66), we evaluated range of motion (ROM), pain and functional outcome with QuickDASH and quality of life with EQ-5D score. Radiologically, component positioning, signs of loosening, SN and arm length difference were documented.

RESULTS:

We found a significant improvement in functional outcome and reduction of pain in both stemmed and stemless groups. No humeral loosening was evident, but there were four glenoid loosenings. In 12 shoulders that developed SN, seven already had scapular bone impression (SBI) evident on initial post-operative radiographs. Glenoid overhang seemed to decrease the risk of SN. Arm lengthening was associated with better EQ-5D but did not influence ROM or functional outcome.

CONCLUSIONS:

Reverse shoulder arthroplasty markedly improved shoulder function. SN is of concern in RSA, but proper positioning of the glenoid component may prevent its development.

PMID:

 

24458592

 

[PubMed - as supplied by publisher]