Validity and Reliability of Prognosis Brachial Plexus Injury Score for Traumatic Brachial Plexus Injury.

Background: Brachial plexus injury (BPI) is a peripheral nerve injury that results in severe functional impairment and disability. Even after prompt treatment, predicting the prognosis of BPI is not easy as it involves various factors. An objective and valid scoring system would aid clinicians in informing families and anticipating problems related to the recovery of BPI. Prognosis BPI (PRO-BPI) score, a new prognostic score to predict the outcome of traumatic BPI (TBPI), was developed in 2019 by Suroto and Rahman. This study aimed to evaluate its validity and reliability. Methods: Retrospective cohort analysis was conducted for 111 BPI patients. A serial assessment of Disabilities of the Arm, Shoulder and Hand (DASH) score and PRO-BPI score was done. Validity analysis was done by assessing Spearman correlations between PRO-BPI score and other scoring systems (DASH, Michigan hand outcomes, and 36-item short form survey score [SF-36]). Internal structure consistency using Cronbach's alpha and test-retest reliability were measured for reliability analyses. A p-value was considered significant if < 0.05. Results: A total of 96 male and 15 female patients were included in our study with a mean age of 27.9 ± 10.6 years. Most of the patients (56.75%) had a poor prognosis based on the scoring system (average, 14.38 ± 3.98). Major contributors of this low score were the persistent pain (score 1 in 57.7% patients) and initial pain scale score (score 1 in 31.5% patients). Validity test showed that 6 parameters were all valid (p < 0.01). Reliability testing was done using Cronbach's alpha and found acceptable internal consistency (α = 0.767). Test-retest reliability was high. Moderate correlations were observed between the measures. Conclusions: PRO-BPI score is a valid and reliable scoring system in predicting the prognosis of TBPI.

The Relationship Between Patient Factors and Clinical Outcomes of Free Functional Muscle Transfer in Patients with Complete Traumatic Brachial Plexus Injury.

Purpose: Traumatic brachial plexus injury (TBPI) causes severe disabilities to the patients, affecting not only upper limb function but also the psychosocial and economic aspects. Free functional muscle transfer (FFMT) is one of the reconstruction modalities for the management of TBPI. The aim of this study is to evaluate the functional outcomes and their correlation to patient factors. Patients and Methods: This is a retrospective study of 131 patients who suffered from complete TBPI (C5-T1) and were treated with the FFMT procedure to restore elbow flexion and wrist extension from 2010 to 2018 in our institution. We evaluated the active range of motion (AROM), muscle power with MRC (Medical Research Council) scale, DASH score, and complications, with a minimum of 12-month follow-up. Results: Following FFMT surgery, elbow flexion was significantly and successfully restored (MRC ≥ 3) in 75.5% of patients with an average AROM of 88.17 ± 41.29°. The wrist extension was restored in 42% of the patients with an average AROM of 20.69 ± 18.72°. There was no correlation between age, side of injury, and time to surgery with the functional outcomes. There was a weak correlation between education level, rehabilitation compliance, and elbow functional outcomes. Conclusion: FFMT is a reliable surgical option to restore elbow flexion in TBPI with a high satisfactory result. Our findings suggested that the FFMT indication is potentially expanded regardless of the patient factors.