title: Short stem shoulder replacement.
abstract: BACKGROUND
  It is agreed that it is important to anatomically reproduce the proximal humeral anatomy when performing a prosthetic shoulder replacement. This can be difficult with a long stemmed prosthesis, in particular if there is little relationship of the metaphysis to the humeral shaft. The 'short stem' prosthesis can deal with this problem.
  
  
  OBJECTIVE
  A prospective study assessed the results of total shoulder arthroplasty using a short stem humeral prosthesis, a ceramic humeral head, and a pegged cemented polyethylene glenoid.
  
  
  METHODS
  Patients with primary shoulder osteoarthritis were recruited into this prospective trial and pre-operatively had the ASES, Constant, SPADI, and DASH scores recorded. The patients were clinically reviewed at the two weeks, eight weeks, one year, and two year mark with completion of a data form. Radiological evaluation was at the eight week, one year and two year follow-up. At the one and two year follow-up the satisfaction rating, the range of passive and active motion, Constant, ASES, SPADI, DASH and pain results were recorded and analysed with SPPS 20.
  
  
  RESULTS
  During the study period 97 short stem, ceramic head total shoulder replacements were carried out. At the time of follow-up 12 were two years from operation and 38 one year from operation. Active elevation was overall mean 160 degrees. Constant scores were 76 at 1 year, and 86 at 2 years, ASES 88 and 93, and satisfaction 96% and 98% respectively at one and 2 year follow up. There were no problems during insertion of the humeral prosthesis, or any radiolucent lines or movement of the prosthesis on later radiographs.
  
  
  CONCLUSIONS
  The short stem prosthesis had no complications, and on follow up radiographs good bone fixation. These fairly short term clinical results were overall good.
authors.affiliation: Department of Surgery, Melbourne Shoulder and Elbow Centre, Monash University, Melbourne, Australia.
authors.forename: Simon N
authors.initials: SN
authors.lastname: Bell
authors.affiliation: Department of Surgery, Melbourne Shoulder and Elbow Centre, Monash University, Melbourne, Australia.
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Coghlan
keywords: Ceramic prosthesis; short stem humeral prosthesis; shoulder arthroplasty; shoulder replacement; stemless