Long thoracic nerve release for scapular winging: clinical study of a continuous series of eight patients

Neurolysis of the Long Thoracic Nerve for Scapular Winging due to Isolated Serratus Anterior Palsy: Early and Midterm Results in 29 Patients

Objective

This study aimed to report our surgical outcomes of thoracic long thoracic nerve (LTN) decompression in patients with isolated LTN palsy, using a clinical scoring system designed to facilitate the grading of scapular winging severity.

Methods

This was a retrospective review of patients who had undergone decompression and neurolysis of the LTN for scapular winging. Each patient underwent needle electromyography of the serratus anterior for confirmation of diagnosis and were refractory to a minimum of 6 months of nonoperative management. Preoperatively and at final follow-up, shoulder range of motion and the Wrightington Winging Score (WWS) was used to objectively grade the dynamic and static components of winging.

Results

Between 2014 and 2020, 29 patients who underwent thoracic neurolysis for scapular winging were analyzed. These were 16 males and 13 females with a mean age of 37 years. The injury mechanism was due to trauma in 19 cases and neuralgic amyotrophy in 10. The median duration between winging onset and surgery was 30 months. There were significant improvements in mean active shoulder abduction and forward flexion. Winging was noticeably improved in 22 patients. At presentation, the median WWS was 3, which improved to 1 at final follow-up.

Conclusion

In patients with isolated LTN palsy causing persistent scapular winging which is not responsive to conservative treatment, neurolysis of the thoracic portion of the LTN can be considered.

Level of Evidence

IV.

Long Thoracic Nerve Palsy: When Is Decompression Indicated

Scapular winging due to long thoracic nerve palsy can occur through traumatic injuries and nontraumatic events. The traditional view is that most patients will achieve spontaneous recovery within 2 years of winging onset. However, there is evidence that points to a less clear-cut natural history, with residual winging, muscle weakness, and fatigability being exhibited in a significant percentage of patients. Reports from proponents of a more proactive approach have shown that the surgical decompression of the long thoracic nerve beyond 12 months, through thoracic, supraclavicular, or combined approaches, can yield satisfactory results. This review examines our current understanding of long thoracic nerve palsy and explores the varying treatment strategies with their reported outcomes.

Neurolysis of the distal segment of the long thoracic nerve for the treatment of scapular winging due to serratus anterior palsy: a continuous series of 73 cases

BACKGROUND

Serratus anterior (SA) palsy following mechanical injury to the long thoracic nerve (LTN) is the most common cause of scapular winging. This study aimed to identify the factors influencing the outcome of neurolysis of the distal segment of the LTN. We hypothesized that poor results are due to duration before surgery and to persistent scapulothoracic dysfunction.

METHODS

A retrospective study was conducted. The inclusion criteria were partial or complete isolated noniatrogenic SA paralysis of at least 4-month duration with preoperative electrophysiologic assessment confirming the neurogenic origin without signs of reinnervation.

RESULTS

Seventy-three patients were assessed at 45 days, 6 months, and 24 months after neurolysis of the distal segment of the LTN. At the last follow-up, improvement was excellent in 38 (52%), good in 22 cases (30%), moderate in 6 (8%), and poor in 7 (10%). No patient showed deterioration in outcomes since the beginning of follow-up. Scapular winging was no longer present in 46 cases (63%), while it was minimal in 23 (31.5%). In 4 cases (5.5%), winging was similar to the preoperative condition.

DISCUSSION

The best outcomes occurred in patients who presented without compensatory muscle pain and who were treated within 12 months of paralysis. Beyond this time frame, neurolysis can still provide useful functional improvement and avoid palliative surgery.

CONCLUSION

Neurolysis of the distal segment of the LTN is a safe and reliable procedure. This technique allows treatment of SA muscle palsy and corrects scapular winging with excellent or good outcomes in 82% of cases.

The Role of Positional Release Therapy in Treating Recalcitrant Brachial Plexus Neuritis: A Case Report

A 17-year-old female Caucasian soccer player presented with severe right shoulder pain and scapular winging due to brachial plexus neuritis. Over the course of 6 weeks, the patient received Positional Release Therapy once a week coupled with electrical modalities, massage and a daily home exercise program. The form of brachial plexus neuritis the patient was diagnosed with was Parsonage-Turner Syndrome, a rare condition often resistant to traditional physical therapy, typically persists for six months to years, at times requiring surgical intervention. This case report is unique because it is the first to utilize Positional Release Therapy for its treatment and one which resolved more quickly than typically reported.

Modified Eden-Lange procedure for iatrogenic lateral scapular winging

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Lateral winging scapula is rare and generated by the trapezius paralysis. It is most likely iatrogenic from procedures involving the posterior cervical triangle.

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The modified Eden-Lange procedures one of the options by restoring the major actions of a flaccid trapezius.

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The modified and standard Eden-Lange procedure has been proven to successfully remove the scapular wing by restoring the main action of the trapezius muscle.

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This procedure allowed patient to achieve excellent results in terms of pain relief, strength, and stability after a routine physical therapy program.

Introduction

Lateral winging scapula is rare and generated by the trapezius paralysis. It is most likely iatrogenic from procedures involving the posterior cervical triangle. The modified Eden-Lange procedures one of the options by restoring the major actions of a flaccid trapezius. This case report aims to evaluate the outcomes.

Case report

A 34-year-old female came with right lateral scapular winging after radical neck tumor dissection and miss diagnosed by another hospital and underwent shoulder surgery. We performed a physical examination and showed lateral winging scapula. The best management therapy for this patient used modified Eden-Lange procedure.

Discussion

Conservative treatments for Lateral scapular winging caused by spinal accessory nerve injury might be successful in early 20 months. However, our patient was injured 26 months before surgery which made Eden-Lange Procedures was the best choice for the patient. Modifications to this procedure allowed her to achieve excellent results.

Conclusion

Correction of the lateral scapular winging by modified Eden-Lange procedure combined with physical therapy for patient’s trapezius palsy to gain adequate stability for daily activities.

Current concepts review: peripheral neuropathies of the shoulder in the young athlete

Peripheral neuropathies of the shoulder and upper extremity are uncommon injuries that may affect the young athletic population. When present, they can result in significant pain and functional impairment. The cause of peripheral neuropathy in young athletes may be an acute, traumatic injury such as a shoulder dislocation or a direct blow to the shoulder girdle. Alternatively, repetitive overuse with resultant compression or traction of a nerve over time may also result in neuropathy; overhead athletes and throwers may be particularly susceptible to this mechanism of nerve injury. Regardless of etiology, young athletes typically present with activity-related pain, paresthesias, and dysfunction of the affected upper extremity. In addition to physical examination, diagnostic studies such as radiographs and magnetic resonance imaging (MRI) are commonly performed as part of an initial evaluation and electrodiagnostic studies may be used to confirm the diagnosis of peripheral neuropathy. Electrodiagnostic studies may consist of electromyography, which evaluates the electrical activity produced by skeletal muscles, and/or a nerve conduction study, which evaluates a nerve's ability to transmit an electrical signal. Although data are not robust, clinical outcomes for young patients with activity-related peripheral neuropathies of the shoulder are generally good, with most young athletes reporting both symptomatic and functional improvement after treatment.

Scapular winging on Exercise Cambrian Patrol: three soldiers in three days - an occupational risk?

Exercise CAMBRIAN PATROL is an internationally recognised, arduous patrolling exercise held annually in Mid-South Wales. The 2017 iteration of the exercise generated three uncommon shoulder injuries in three consecutive days, all of which were thought to have a similar aetiology. This article presents a case series of three instances of scapular winging in soldiers carrying heavy weight. We review the relevant anatomy and pathophysiology of long thoracic nerve injury and discuss management strategies of scapular winging. Occupational health considerations are reviewed, with respect to carrying large amounts of weight over distance and difficult terrain within the armed forces, along with discussion of a novel weight distribution system (VIRTUS) which has recently been brought into service by the British Army.

Surgical and Clinical Decision Making in Isolated Long Thoracic Nerve Palsy

BACKGROUND

Isolated long thoracic nerve palsy results in scapular winging and destabilization. In this study, we review the surgical management of isolated long thoracic nerve palsy and suggest a surgical technique and treatment algorithm to simplify management.

METHODS

In total, 19 patients who required surgery for an isolated long thoracic nerve palsy were reviewed retrospectively. Preoperative demographics, electromyography (EMG), and physical examinations were reviewed. Intraoperative nerve stimulation, surgical decision making, and postoperative outcomes were reviewed.

RESULTS

In total, 19 patients with an average age of 32 were included in the study. All patients had an isolated long thoracic nerve palsy caused by either an injury (58%), Parsonage-Turner syndrome (32%), or shoulder surgery (10%); 18 patients (95%) underwent preoperative EMG; 10 with evidence of denervation (56%); and 13 patients had motor unit potentials in the serratus anterior (72%). The preoperative EMG did not correlate with intraoperative nerve stimulation in 13 patients (72%) and did correlate in 5 patients (28%); 3 patients had a nerve transfer (3 thoracodorsal to long thoracic at lateral chest, 1 pec to long thoracic at supraclavicular incision). In the 3 patients who had a nerve transfer, there was return of full forward flexion of the shoulder at an average of 2.5 months.

CONCLUSIONS

A treatment algorithm based on intraoperative nerve stimulation will help guide surgeons in their clinical decision making in patients with isolated long thoracic nerve palsy. Intraoperative nerve stimulation is the gold standard in the management of isolated long thoracic nerve palsy.

Indirect transfer of the sternal head of the pectoralis major with autogenous semitendinosus augmentation to treat scapular winging secondary to long thoracic nerve palsy

BACKGROUND

Scapular winging resulting from long thoracic nerve palsy is uncommon but debilitating, and the choice of surgical treatment is inconsistent. The autogenous semitendinosus tendon plays a key role as an interposed tendon graft, although its use in the indirect transfer of the sternal head of the pectoralis major during the treatment of scapular winging has rarely been reported.

MATERIALS AND METHODS

A retrospective review was performed during a 9-year period from the clinical data of 26 cases (28 shoulders) with indirect transfer of the sternal head of the pectoralis major with the interposition of an autogenous semitendinosus tendon graft for dynamic stabilization of the scapula. The range of active movement (forward elevation, abduction, and external rotation), American Shoulder and Elbow Surgeons score, visual analog scale score, and complications were evaluated with a mean of 47 months of clinical follow-up.

RESULTS

Patients' active shoulder movements (forward elevation, abduction, and external rotation), American Shoulder and Elbow Surgeons score, and visual analog scale score showed significant improvements (P < .01). One seroma developed and resolved with extraction. Four shoulders had adhesive capsulitis and recovered after physiotherapy. There was no recurrence of scapular winging in any patient.

CONCLUSION

Timely treatment, often surgical, is vital to the recovery of scapular winging secondary to long thoracic nerve palsy. Our results suggest that indirect transfer of the sternal head of the pectoralis major with interposition of the autogenous semitendinosus tendon can effectively treat scapular winging due to long thoracic nerve palsy with limited sequelae. Widespread use of this technique is recommended.

[Winged scapula in lyme borreliosis]

Here we present the case of a young patient with one-sided winged scapula and lyme borreliosis. This disease can be very delimitating in daily life. If non-operative treatment fails, dynamic or static stabilization of the scapula can be a therapeutic option.

Meta-Analysis of Long Thoracic Nerve Decompression and Neurolysis Versus Muscle and Tendon Transfer Operative Treatments of Winging Scapula

Background:

Injury to long thoracic and the spinal accessory nerves can cause winging scapula as a result of weakness and paralysis of the trapezius and serratus anterior muscles. Although these nerve and muscle operations have been reported to correct winging scapula due to various causes, there is no report on comparing the outcomes of these procedures in peer-reviewed Pubmed-indexed literature. In this article, we compared the improvements in the restoration of shoulder functions in winging scapula patients after long thoracic nerve decompression (LTND) in our present study with outcomes of muscle and tendon transfer operations published in the literature (Aetna cited articles).

Methods:

Twenty-five winging scapula patients met the inclusion criteria, who had LTND and neurolysis at our clinic since 2008. Electromyographic evaluation of the brachial plexus and long thoracic nerve distribution was performed preoperatively for all our patients in this study. Operating surgeon (R.K.N.) examined all patients and measured pre- and postoperative range of motion of the affected shoulder. The mean follow-up was 23 months (range, 13–46 months). Age of our patients in this study at the time of surgery was between 13 and 63 years. These patients had winging scapula between 5 days (tennis injury) and several years before surgery and some were unknown.

Results:

Shoulder flexion and abduction improved to an average of 163˚ (P < 0.000006) and 157˚ (P < 0.0000005) from 104˚ and 97˚ at least 1-year post-LTND in 25 winging scapula patients in our present study. This is statistically significant in comparison to the reported improvements resulting from muscle and tendon transfer procedures in the Pubmed-indexed (Aetna cited) literature.

Conclusion:

This meta-analysis suggests that nerve surgeries such as LTND and neurolysis are effective techniques in correcting winging scapula in comparison with muscle transfer operations.

Scratch Collapse Test Is a Useful Clinical Sign in Assessing Long Thoracic Nerve Entrapment

The scratch collapse test (SCT) is a relatively new clinical test in which a positive result implies entrapment neuropathy of the nerve tested. Initially described for carpal and cubital tunnel syndromes, subsequent authors have found it useful for the assessment of median, ulna, radial, axillary, and common peroneal nerves. We report a case illustrating the value of the SCT in the clinical assessment of thoracic nerve entrapment.