The Brachial Plexus Outcome Measure: Development, Internal Consistency, and Construct Validity

  • Ho E
  • Reg O
  • Christine Curtis M
 et al. 
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Purpose: The purpose of this article was to report the develop-ment of a new assessment tool, the Brachial Plexus Outcome Mea-sure (BPOM) and the evaluation of its internal consistency and construct validity. Methods: A retrospective case series of children aged 4e19 years with obstetrical brachial plexus palsy (OBPP) was conduct-ed. Intraclass coefficients were calculated for the BPOM Activity Scale items. Correlation between the Active Movement Scale (AMS) and BPOM Activity Scale scores were conducted to deter-mine the convergent validity. Results: The BPOM Activity Scale items (N ¼ 306) had good in-ternal consistency (Cronbach's a ¼ 0.87). A strong correlation be-tween the BPOM Activity Scale and AMS (n ¼ 284) was found (r ¼ 0.71, p ¼ 0.001, a ¼ 0.05). Conclusions: The BPOM Activity Scale demonstrates good in-ternal consistency and construct validity as a discriminative func-tional outcome measure in children with OBPP. Level of Evidence: IV J HAND THER. 2012;25:406–17. Obstetrical brachial plexus palsy (OBPP) is a par-tial or total birth injury to the network of nerves that originate from spinal roots C5eC8 and T1. Full recovery of neurological function of the upper limb is possible in an infant if recovery is seen within the first month after birth. 1 Infants with more severe in-juries will have residual deficits, including loss of ac-tive range of motion (AROM) and joint contractures in their affected upper extremity. Children with up-per plexus injuries will have more impairment prox-imally, whereas the whole limb may be affected in children with total plexus injuries. Children with OBPP may require secondary sur-gical reconstructive procedures to optimize upper limb joint integrity, position, and active movement. 2

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  • Emily S Ho

  • Ot Reg

  • MEd G Christine Curtis

  • Howard M Clarke

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