Humeral component modularity may not be an important factor in the outcome of shoulder arthroplasty for glenohumeral osteoarthritis

We examined the outcomes of using 3 types of humeral prostheses in total shoulder arthroplasty for osteoarthritis: a modular prosthesis with variable head diameters (MV), a nonmodular prosthesis with variable head diameters (NV), and a nonmodular prosthesis with a fixed head diameter (NF). Patients...

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Published inThe American journal of orthopedics (Belle Mead, N.J.) Vol. 34; no. 4; p. 173
Main Authors Churchill, R Sean, Kopjar, Branko, Fehringer, Edward V, Boorman, Richard S, Matsen, 3rd, Frederick A
Format Journal Article
LanguageEnglish
Published United States 01.04.2005
Subjects
Aged
Arthroplasty, Replacement - instrumentation
Arthroplasty, Replacement - methods
Cohort Studies
Female
Humans
Joint Prosthesis
Male
Middle Aged
Osteoarthritis - diagnosis
Osteoarthritis - surgery
Pain, Postoperative - physiopathology
Probability
Prognosis
Prosthesis Design
Prosthesis Failure
Prosthesis Fitting
Quality of Life
Range of Motion, Articular - physiology
Recovery of Function
Retrospective Studies
Risk Assessment
Shoulder Joint - physiopathology
Shoulder Joint - surgery
Treatment Outcome
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Summary:We examined the outcomes of using 3 types of humeral prostheses in total shoulder arthroplasty for osteoarthritis: a modular prosthesis with variable head diameters (MV), a nonmodular prosthesis with variable head diameters (NV), and a nonmodular prosthesis with a fixed head diameter (NF). Patients (N=101) completed self-assessments of shoulder function and health status before surgery and at follow-up between 30 and 60 months after surgery. Outcomes for the MV and NV prostheses did not differ statistically. The NF prosthesis trended toward poorer functional scores. Two Short Form-36 dimensions were statistically significantly lower (P<.05) in the NF group than in the MV and NV groups. These results fail to confirm that humeral component modularity is an important factor in the outcome of shoulder arthroplasty.
ISSN:1078-4519