scholarly journals Importance of the Wrist Extensor Muscle Training: Two Cases of Elbow Flexorplasty following Traumatic Brachial Plexus Injuries

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Shigeki Kubota ◽  
Tadashi Kubo ◽  
Hiromi Kameda ◽  
Yoshiyasu Itoh
Keyword(s):  
Brachial Plexus ◽  
Elbow Flexion ◽  
Wrist Flexion ◽  
Postoperative Rehabilitation ◽  
Wrist Extensor ◽  
Antagonist Muscles ◽  
Extensor Muscles ◽  
Muscle Groups ◽  
Flexion Strength

The modified Steindler procedure—a reconstructive surgery used to restore elbow flexion following upper brachial plexus injuries—involves shifting the origins of the muscle groups responsible for wrist flexion and forearm pronation originating from the medial epicondyle to the proximal direction to be used as flexors of the elbow. In the postoperative rehabilitation, we focused on strengthening not only the transferred muscle but also the wrist extensor muscles as antagonist muscles. After reconstruction surgery for elbow flexion via the modified Steindler procedure for traumatic brachial plexus injury, we performed long-term rehabilitation to strengthen the antagonist muscles. As a result, in two cases, excellent elbow flexion strength and gripping strength were achieved, confirming the importance of the antagonist muscles.

Detection of effort maximality in adults performing isokinetic wrist flexion and extension

2021 ◽  
pp. 1-7
Author(s):  
Mercè Torra ◽  
Eduard Pujol ◽  
Anna Maiques ◽  
Salvador Quintana ◽  
Roser Garreta ◽  
...  
Keyword(s):  
High Velocity ◽  
Healthy Male ◽  
Wrist Flexion ◽  
Low Velocity ◽  
Wrist Extensor ◽  
Submaximal Effort ◽  
The Difference ◽  
Muscle Groups ◽  
Maximal Effort ◽  
Flexion And Extension

BACKGROUND: The difference between isokinetic eccentric to concentric strength ratios at high and low velocities (DEC) is a powerful tool for identifying submaximal effort in other muscle groups but its efficiency in terms of the wrist extensors (WE) and flexors (WF) isokinetic effort has hitherto not been studied. OBJECTIVE: The objective of the present study is to examine the usefulness of the DEC for identifying suboptimal wrist extensor and flexor isokinetic efforts. METHODS: Twenty healthy male volunteers aged 20–40 years (28.5 ± 3.2) were recruited. Participants were instructed to exert maximal and feigned efforts, using a range of motion of 20∘ in concentric (C) and eccentric (E) WE and WF modes at two velocities: 10 and 40∘/s. E/C ratios (E/CR) where then calculated and finally DEC by subtracting low velocity E/CR from high velocity ones. RESULTS: Feigned maximal effort DEC values were significantly higher than their maximal effort counterparts, both for WF and WE. For both actions, a DEC cutoff level to detect submaximal effort could be defined. The sensitivity of the DEC was 71.43% and 62.5% for WE ad WF respectively. The specificity was 100% in both cases. CONCLUSION: The DEC may be a valuable parameter for detecting feigned maximal WF and WE isokinetic effort in healthy adults.

Nerve transfers to the biceps and brachialis branches to improve elbow flexion strength after brachial plexus injuries

2004 ◽  
Vol 16 (5) ◽  
pp. 313-318
Author(s):  
Thomas H. Tung ◽  
Christine B. Novak ◽  
Susan E. Mackinnon
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Elbow Flexion ◽  
Musculocutaneous Nerve ◽  
Nerve Transfers ◽  
Brachialis Muscle ◽  
Nerve Fascicle ◽  
The Mean ◽  
Mean Time ◽  
Flexion Strength

Object In this study the authors evaluated the outcome in patients with brachial plexus injuries who underwent nerve transfers to the biceps and the brachialis branches of the musculocutaneous nerve. Methods The charts of eight patients who underwent an ulnar nerve fascicle transfer to the biceps branch of the musculocutaneous nerve and a separate transfer to the brachialis branch were retrospectively reviewed. Outcome was assessed using the Medical Research Council (MRC) grade to classify elbow flexion strength in conjunction with electromyography (EMG). The mean patient age was 26.4 years (range 16–45 years) and the mean time from injury to surgery was 3.8 months (range 2.5–7.5 months). Recovery of elbow flexion was MRC Grade 4 in five patients, and Grade 4+in three. Reinnervation of both the biceps and brachialis muscles was confirmed on EMG studies. Ulnar nerve function was not downgraded in any patient. Conclusions The use of nerve transfers to reinnervate the biceps and brachialis muscle provides excellent elbow flexion strength in patients with brachial plexus nerve injuries.

Double Fascicular Transfer Using Partially Injured Donor Nerves: Is It Powerful Enough to Restore Elbow Flexion in Acute Brachial Plexus Injuries?

2021 ◽  
Author(s):  
Tommy Nai-Jen Chang ◽  
Johnny Chuieng-Yi Lu ◽  
Che-Hsiung Lee ◽  
Yu-Ching Lin ◽  
Yenpo Lin ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Demographic Data ◽  
Preoperative Evaluation ◽  
Elbow Flexion ◽  
Shoulder Abduction ◽  
Postoperative Rehabilitation ◽  
Strength Assessment ◽  
Group I ◽  
Healthy Side ◽  
Group Ii

Abstract Background Loss of elbow flexion is a common sequela of acute brachial plexus injuries (BPIs). The Mackinnon/Oberlin-II double fascicular transfer (DFT) is a widely used method to restore this function in acute C5–6 or C5–7 injuries. This study attempted to evaluate if this technique can be applied reliably for cases involving C8 and/or T1 injuries. Methods Adult patients with acute BPIs who underwent the Mackinnon/Oberlin-II DFT in our center between 2008 and 2018 were retrospectively identified. Group I (n = 37) included patients with only C5–6 or C5–7 injury, while group II (n = 32) patients presented C5–8 ± T1 injuries. The demographic data, pre- and postoperative neurologic evaluations, electrodiagnostic studies, and grip strength assessment were collected. Results A total of 69 patients met the inclusion criteria. Preoperatively, the patients in group II presented poorer nerve conduction and electromyography in both the median and the ulnar nerves and the supply muscles. The percentage of M3 achievement in both groups was 91.9 versus 87.5% and M4 was 73.0 and 71.9%, respectively, which both were not statically significant but the achievement of group II was slower than the group I, 1 to 2 months slower, respectively. Both groups had 57.57 and 46.0% of the postoperative grip power compared with the healthy side, the result of shoulder abduction was not different (p = 0.480). Conclusion With careful preoperative evaluation, early intervention, appropriate intraoperative functional fascicle selection, and aggressive postoperative rehabilitation, indications for the Mackinnon/Oberlin-II DFT technique can safely include acute C5–8 injuries and even partial T1 acute BPIs.

Minimum Ten-Year Outcomes of Partial Ulnar Nerve Transfer for Restoration of Elbow Flexion in Patients with Upper Brachial Plexus Injury

2019 ◽  
Vol 24 (03) ◽  
pp. 283-288
Author(s):  
Yusuke Nagano ◽  
Daisuke Kawamura ◽  
Alaa Terkawi ◽  
Atsushi Urita ◽  
Yuichiro Matsui ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Functional Outcomes ◽  
Brachial Plexus Injury ◽  
Nerve Transfer ◽  
Elbow Flexion ◽  
The Mean ◽  
Flexion Strength

Background: Partial ulnar nerve transfer to the biceps motor branch of the musculocutaneous nerve (Oberlin’s transfer) is a successful approach to restore elbow flexion in patients with upper brachial plexus injury (BPI). However, there is no report on more than 10 years subjective and objective outcomes. The purpose of this study was to clarify the long-term outcomes of Oberlin’s transfer based on the objective evaluation of elbow flexion strength and subjective functional evaluation of patients. Methods: Six patients with BPI who underwent Oberlin’s transfer were reviewed retrospectively by their medical records. The mean age at surgery was 29.5 years, and the mean follow-up duration was 13 years. The objective functional outcomes were evaluated by biceps muscle strength using the Medical Research Council (MRC) grade at preoperative, postoperative, and final follow-up. The patient-derived subjective functional outcomes were evaluated using the Quick Disability of the Arm, Shoulder, and Hand (QuickDASH) questionnaire at final follow-up. Results: All patients had MRC grade 0 (M0) or 1 (M1) elbow flexion strength before operation. Four patients gained M4 postoperatively and maintained or increased muscle strength at the final follow-up. One patient gained M3 postoperatively and at the final follow-up. Although one patient achieved M4 postoperatively, the strength was reduced to M2 due to additional disorder. The mean score of QuickDASH was 36.5 (range, 7–71). Patients were divided into two groups; three patients had lower scores and the other three patients had higher scores of QuickDASH. Conclusions: Oberlin’s transfer is effective in the restoration of elbow flexion and can maintain the strength for more than 10 years. Patients with upper BPI with restored elbow flexion strength and no complicated nerve disorders have over ten-year subjective satisfaction.

Comparison Between Supraclavicular Versus Video-Assisted Intrathoracic Phrenic Nerve Section for Transfer in Patients With Traumatic Brachial Plexus Injuries: Case Series

2020 ◽  
Vol 19 (3) ◽  
pp. 249-254
Author(s):  
Mariano Socolovsky ◽  
Marcio de Mendonça Cardoso ◽  
Ana Lovaglio ◽  
Gilda di Masi ◽  
Gonzalo Bonilla ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Phrenic Nerve ◽  
Case Series ◽  
Nerve Transfer ◽  
Elbow Flexion ◽  
Nerve Section ◽  
Video Assisted ◽  
Significant Difference ◽  
Flexion Strength

Abstract BACKGROUND The phrenic nerve has been extensively reported to be a very powerful source of transferable axons in brachial plexus injuries. The most used technique used is supraclavicular sectioning of this nerve. More recently, video-assisted thoracoscopic techniques have been reported as a good alternative, since harvesting a longer phrenic nerve avoids the need of an interposed graft. OBJECTIVE To compare grafting vs phrenic nerve transfer via thoracoscopy with respect to mean elbow strength at final follow-up. METHODS A retrospective analysis was conducted among patients who underwent phrenic nerve transfer for elbow flexion at 2 centers from 2008 to 2017. All data analysis was performed in order to determine statistical significance among the analyzed variables. RESULTS A total of 32 patients underwent supraclavicular phrenic nerve transfer, while 28 underwent phrenic nerve transfer via video-assisted thoracoscopy. Demographic characteristics were similar in both groups. A statistically significant difference in elbow flexion strength recovery was observed, favoring the supraclavicular phrenic nerve section group against the intrathoracic group (P = .036). A moderate though nonsignificant difference was observed favoring the same group in mean elbow flexion strength. Also, statistical differences included patient age (P = .01) and earlier time from trauma to surgery (P = .069). CONCLUSION Comparing supraclavicular sectioning of the nerve vs video-assisted, intrathoracic nerve sectioning to restore elbow flexion showed that the former yielded statistically better results than the latter, in terms of the percentage of patients who achieve at least level 3 MRC strength at final follow-up. Furthermore, larger scale prospective studies assessing the long-term effects of phrenic nerve transfers remain necessary.

Elbow flexion strength and contractile activity after partial ulnar nerve or intercostal nerve transfers for brachial plexus injuries

2020 ◽  
Vol 45 (8) ◽  
pp. 818-826
Author(s):  
Dawn Sinn Yii Chia ◽  
Kazuteru Doi ◽  
Yasunori Hattori ◽  
Sotetsu Sakamoto
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Muscle Power ◽  
Contractile Activity ◽  
Nerve Transfer ◽  
Elbow Flexion ◽  
Intercostal Nerve ◽  
Nerve Transfers ◽  
Forearm Muscles ◽  
Flexion Strength

We compared the outcomes of 23 partial ulnar nerve and 15 intercostal nerve transfers for elbow flexion reconstruction in patients with C56 or C567 brachial plexus injuries using manual muscle power, dynamometric measurements of elbow flexion strength and electromyography. The range of elbow flexion and muscle strength recovery to Grade 3 or 4 were comparable between the two groups. The patients with C567 injuries had significantly stronger eccentric contraction after the partial ulnar nerve transfer than after the intercostal nerve transfer ( p < 0.05). Electromyography of individual muscles demonstrated that the patients with partial ulnar nerve transfers were unable to voluntarily isolate biceps contraction and recruited forearm flexors and extensors. The patients after partial ulnar nerve transfer had significantly more activity of the forearm muscles during concentric elbow flexion than after intercostal nerve transfers ( p < 0.05). We conclude that partial ulnar nerve transfers were superior to intercostal nerve transfers when assessed quantitatively with the dynamometer to evaluate elbow flexion, although simultaneous recruitment of forearm muscles may have contributed to the increased elbow flexion strength in the patients with the partial ulnar nerve transfer. Level of evidence: III

Double fascicular nerve transfer to the biceps and brachialis muscles after brachial plexus injury: clinical outcomes in a series of 29 cases

2011 ◽  
Vol 114 (6) ◽  
pp. 1520-1528 ◽  
Author(s):  
Wilson Z. Ray ◽  
Mitchell A. Pet ◽  
Andrew Yee ◽  
Susan E. Mackinnon
Keyword(s):  
Brachial Plexus ◽  
Clinical Outcomes ◽  
Chart Review ◽  
Retrospective Chart Review ◽  
Nerve Transfer ◽  
Elbow Flexion ◽  
Study Results ◽  
The Mean ◽  
Flexion Strength

Object The clinical outcomes of patients with brachial plexus injuries who underwent double fascicular transfer (DFT) using fascicles from the median and ulnar nerves to reinnervate the biceps and brachialis muscles were evaluated. Methods The authors conducted a retrospective chart review of 29 patients with brachial plexus injuries that were treated with DFT for restoration of elbow flexion. All patients underwent pre- and postoperative clinical evaluation using the Medical Research Council grading system. Results The mean patient age was 37 years (range 17–68 years), and there was a mean follow-up of 19 ± 12 months (range 8–68 months). At the most recent follow-up, all but 1 patient (97%) had regained elbow flexion. Eight patients recovered Grade M5, 15 patients recovered Grade M4, and 4 patients recovered Grade M3 elbow flexion strength. There was no evidence of functional deficit in the donor nerve distributions. Conclusions Study results demonstrated the reliable restoration of M4–M5 elbow flexion following double fascicular transfer in patients with brachial plexus injuries.

Age as a Predictor of Long-Term Results in Patients with Brachial Plexus Palsies Undergoing Surgical Repair

2017 ◽  
Vol 15 (1) ◽  
pp. 15-24 ◽  
Author(s):  
Mariano Socolovsky ◽  
Gilda di Masi ◽  
Gonzalo Bonilla ◽  
Ana Carolina Lovaglio ◽  
Dan López
Keyword(s):  
Brachial Plexus ◽  
Linear Trend ◽  
Age Groups ◽  
Elbow Flexion ◽  
Long Term Results ◽  
Shoulder Abduction ◽  
Age Group ◽  
Brachial Plexus Surgery ◽  
Type Of Injury

Abstract BACKGROUND Among other factors, like the time from trauma to surgery or the number of axons that reach the muscle target, a patient's age might also impact the final results of brachial plexus surgery. OBJECTIVE To identify (1) any correlations between age and the 2 outcomes: elbow flexion strength and shoulder abduction range; (2) whether childhood vs adulthood influences outcomes; and (3) other baseline variables associated with surgical outcomes. METHODS Twenty pediatric patients (under age 20 yr) who had sustained a traumatic brachial plexus injury were compared against 20 patients, 20 to 29 yr old, and 20 patients, 30 yr old or older. Univariate, univariate trend, and correlation analyses were conducted with patient age, time to surgery, type of injury, and number of injured roots included as independent variables. RESULTS A statistically significant trend toward decreasing mean strength in elbow flexion, progressing from the youngest to oldest age group, was observed. This linear trend persisted when subjects were subdivided into 4 age groups (&lt;20, 20-29, 30-39, ≥40). There were no differences by age group in final shoulder abduction range or the percentage achieving a good shoulder outcome. CONCLUSION Our data suggest that age is somehow linked to the outcomes of brachial plexus surgery with respect to elbow flexion, but not shoulder abduction strength. Increasing age is associated with steadily worsening elbow flexion outcomes, perhaps indicating the need for earlier surgery and/or more aggressive repairs in older patients.

Obstetrical brachial plexus injuries: Late functional results of the Steindler procedure

2014 ◽  
Vol 39 (8) ◽  
pp. 868-875 ◽  
Author(s):  
A. Gilbert ◽  
S. Valbuena ◽  
C. Posso
Keyword(s):  
Brachial Plexus ◽  
Brachial Plexus Injury ◽  
Elbow Flexion ◽  
Functional Results ◽  
Obstetrical Brachial Plexus Palsy ◽  
Long Term Follow Up ◽  
The Mean ◽  
Extensor Lag

We reviewed late functional results of a modified Steindler procedure in patients with obstetrical brachial plexus palsy and poor active elbow flexion. From 1982 to 2005, we reviewed final functional results and complications of 27 cases with flexion weakness of the elbow secondary to obstetrical brachial plexus injury, treated with a modified Steindler procedure. At the end of the follow-up, the mean active elbow flexion was 97° and the mean extensor lag was 10°. In the long-term follow-up, the modified Steindler procedure maintained good results in 67% of the cases in our series, and this percentage raised by 82% when the wrist extensor was present or restored before the Steindler procedure. There were poor results in 19% of the patients, but no major complications.

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