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Published on: July 15, 2009
PLUS-M Mobility Values of Osseointegration Patients: How Do Osseointegration Limb Replacement Prosthesis Users
Brian Joseph Page1, Gerard A Sheridan2, Michael D Greenstein3
1From the Hospital for Special Surgery and New York Presbyterian-Weill Cornell Medical Center, Orthopaedic Trauma Service, New York, New York.
Objective:
The primary aim of this study was to compare osseointegration limb replacement prosthesis users to normative published Prosthetic Limb Users Survey of Mobility (PLUS-M) values for traditional socket prosthesis users. The secondary aim was to investigate whether patient factors were predictive of PLUS-M scores.
Design:
Retrospective review of all patients who underwent osseointegration maintained in a prospectively maintained registry. All patients ( N = 63) were invited to complete a PLUS-M survey. Thirty patients completed the survey (15 femoral osseointegration, 15 tibial osseointegration).
Results:
The osseointegration limb replacement prosthesis users cohort's composite median scores and interquartile ranges for the PLUS-M Raw Score, PLUS-M T-score, and PLUS-M percentile score were 57 (46-60), T-score 62.5 (51.275-71.4), and 89.5 (54.95-98.4). PLUS-M T-scores were higher in the osseointegration limb replacement prosthesis users compared with the age and etiology matched literature-reported outcomes in traditional socket prosthesis users for above-knee ( P = 0.027) and below-knee ( P = 0.029) amputees. Tibial osseointegration scores were slightly higher than femur osseointegration scores but did not reach statistical significance. PLUS-M raw ( P = 0.047) and PLUS-M percentile scores ( P = 0.041) were significantly improved for younger patients at the time index amputation. Regression analysis supported this finding.
Conclusions:
Osseointegration limb replacement prosthesis users demonstrate improved functional mobility outcome scores relative to traditional socket prosthesis users. PLUS-M functional scores were improved for younger patients at time of index amputation.
