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The Orthotics and Prosthetics User’s Survey (OPUS) is a self-report questionnaire consisting of five modules. It can be used for prosthetic and orthotic programs for quality assessment, to maintain awareness of improvement in activities, to evaluate changes in patient’s functional status and quality of life, and to assess satisfaction with devices and services.
Original: 87
Modified: 88
10-15 minutes
Lindner et. al. has said 10-15 minutes are required to answer the questions in all the modules.
If only one component is used then time required for completion is less than 10 minutes.
Initially reviewed by Tanmayi Patgaonkar, MHS, RPT/L in 4/2015
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Unilateral Lower Limb Amputation: (Resnik, 2011; n=44, 6 months post lower limb prosthesis users)
MDC for LEFS scale=10.3
MDC for HRQOL=9.2
MDC for Device or Service Satisfaction=15.7
Unilateral Lower Limb Amputation: (Resnik, 2011)
LEFS: Adequate test-retest reliability (ICC=0.67)
HRQOL: Excellent test-retest reliability (ICC=0.85)
CSD/CSS: Adequate test-retest reliability (ICC=0.50)
Unilateral Upper Limb Amputation: (Burger, 2008; n=61, mean age=57+/- 17.1)
UEFS
Person separation Index- Excellent internal consistency (Cronbach’s alpha = 0.89 (23 items) and 0.88 (19 items))
Item separation Index- Excellent internal consistency (Cronbach’s alpha= 0.97 (23 items) and 0.96 (19 items))
Mixed (orthotic and prosthetic users, adults and children both) population for Original OPUS: (Heinemann, 2003; n=164)
Person separation Index
Item Separation Index
LEFS
Excellent Internal consistency (Cronbach’s alpha = 0.94)
ExcellentInternal consistency (Cronbach’s alpha = 0.98)
HRQOL
Excellent Internal consistency (Cronbach’s alpha = 0.88)
ExcellentInternal consistency (Cronbach’s alpha = 0.96)
CSD
Adequate Internal consistency (Cronbach’s alpha = 0.74)
ExcellentInternal consistency (Cronbach’s alpha = 0.86)
CSS
Adequate Internal consistency (Cronbach’s alpha =0.78)
ExcellentInternal consistency (Cronbach’s alpha = 0.82)
Mixed (Adults with orthotic and prosthetics) Population for Modified OPUS: (Jarl, 2012; n=282)
Person Separation Index
Item Separation Index
LEFS
Excellent Internal consistency (Cronbach’s alpha = 0.96)
Excellent Internal consistency (Cronbach’s alpha = 0.99)
UEFS
Excellent Internal consistency (Cronbach’s alpha =0.92)
Excellent Internal consistency (Cronbach’s alpha = 0.97)
CSD
Adequate Internal consistency (Cronbach’s alpha = 0.75
Excellent Internal consistency (Cronbach’s alpha = 0.96)
CSS
Adequate Internal consistency (Cronbach’s alpha = 0.74)
Excellent Internal consistency (Cronbach’s alpha = 0.94)
HRQOL-restrictions
Excellent Internal consistency (Cronbach’s alpha = 0.89)
Excellent Internal consistency (Cronbach’s alpha = 0.97)
HRQOL-emotions
Excellent Internal consistency (Cronbach’s alpha = 0.89)
Excellent Internal consistency (Cronbach’s alpha = 0.99)
Mixed Population for Modified OPUS: (Jarl, 2012)
Ceiling effects for UEFS and LEFS: Adequate=2.5 to 19.6%
UE, LE prosthesis, LE orthosis, insoles, orthopedic shoes: (Jarl et. al., 2014, N=69, Swedish)
SDD (Smallest detectable difference)
LEFS: 12.1
UEFS: 14.8
CSD: 15
CSS: 16.6
HRQOL: 7.4
UE, LE prosthesis, LE orthosis, insoles, orthopedic shoes: (Jarl, 2014)
LEFS: Excellent test-retest reliability (ICC= 0.96)
UEFS: Excellent test-retest reliability (ICC=0.89)
CSD: Excellent test-retest reliability (ICC=0.82)
CSS: Excellent test-retest reliability (ICC=0.77)
HRQOL: Excellent test-retest reliability (ICC=0.91)
Orthopedic, neurological, and rheumatic orthosis using population: Bravini, 2014)
Person separation Index for CSD-IT: Adequate internal consistencyCronbach’s alpha = 0.70 (8 items))
Bettoni, E., et. al. (2014) “A systematic review of questionnaires to assess patient satisfaction with limb orthoses” P & O Intl: 1-12. Find it on PubMed
Bravini, E., et al. (2014) “Validation of the Italian version of the Client Satisfaction with Device module of the Orthotics and Prosthetics Users’ Survey.” Disabil & Health Jour, 7: 442-447. Find it on PubMed
Burger, H. et al. (2008). "Validation of the orthotics and prosthetics user survey upper extremity functional status module in people with unilateral upper limb amputation." J of Rehab Med, 40.5: 393-399. Find it on PubMed
Heinemann, A. W., R. K. Bode, and C. O'Reilly. (2003). "Development and measurement properties of the Orthotics and Prosthetics Users' Survey (OPUS): a comprehensive set of clinical outcome instruments." P & O Intl, 27.3: 191-206. Find it on PubMed
Jarl, GM., Allen W. Heinemann, and Liselotte M. Norling Hermansson. (2012) "Validity evidence for a modified version of the Orthotics and Prosthetics Users' Survey." Disability and Rehab: Assistive Tech, 7.6: 469-478. Find it on PubMed
Jarl, G.M., and Hermansson, L.M.N. (2009) “Translation and linguistic validation of the Swedish version of Orthotics and Prosthetics Users’ Survey.” P &O Intl, 33(4): 329–338. Find it on PubMed
Jarl, G., Holmefur, M., Hermansson, L. (2014) “Test–retest reliability of the Swedish version of the Orthotics and Prosthetics Users’ Survey.” P & O Intl, 38(1): 21–26. Find it on PubMed
Lindner, HN. Natterlund, BS., & Hermansson, LMN. (2010) “Upper limb prosthetic outcome measures: Review and content comparison based on International Classification of Functioning, Disability and Health.” P & O Intl, 34(2): 109–128. Find it on PubMed
Resnik, L., Borgia, M. (2011). “Reliability of outcome measures for people with lower-limb amputations: distinguishing true change from statistical error.” Phys Ther, 91: 555–565. Find it on PubMed
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