Two cases of brachial plexus compression secondary to displaced clavicle fractures

Malunion of a clavicle fracture caused thoracic outlet syndrome in a professional violinist

Clavicle fractures are a common injury in adults. Most patients are treated non-operatively. In this case report, a 53-year-old professional violinist had a midt shaft clavicula fracture and was treated non-operatively. The fracture healed, but the patient developed thoracic outlet syndrome (TOS) and a venous thrombosis when playing violin. Surgery with restoration of the normal anatomy alleviated the symptoms and six months later she was symptom free and playing violin again. TOS is a rare complication to clavicle fractures and the treating doctors should be aware of the diagnosis.

Late brachial plexopathy after a mid-shaft clavicle fracture: A case report

BACKGROUND

Clavicle fractures can rarely be associated with brachial plexus injury. These are commonly caused by tractional injury at the time of trauma, but unfrequently can be caused by compression of the brachial plexus from excessive callus or granulation tissue formation.

CASE SUMMARY

We report a rare case of an adult male who sustained a mid-shaft clavicle fracture and had a late presentation of brachial plexus palsy due to compression from excessive callus formation.

CONCLUSION

We reported a case of a rare occurrence of delayed brachial plexus palsy due to compression from excessive callus formation in a midshaft clavicle fracture. Early diagnosis and surgical decompression of the brachial plexus is critical, as when managed efficiently, a full recovery of the brachial plexus palsy can be expected in these patients.

Clavicle Nonunion and Malunion: Surgical Interventions for Functional Improvement

Clavicle nonunion and malunion are relatively uncommon but, when symptomatic, can result in pain and dysfunction that requires surgical intervention. Various reconstructive and grafting techniques are available to achieve stable fixation and union. In the setting of persistent nonunion, vascularized bone grafting may be necessary. A thorough understanding of the patient's type of nonunion and potential for healing is crucial for achieving satisfactory results because is thoughtful preoperative planning and surgical fixation.

Current Concepts in the Management of Neurogenic Thoracic Outlet Syndrome: A Review

Thoracic outlet syndrome is a constellation of signs and symptoms due to compression of the neurovascular bundle of the upper limb. In particular, neurogenic thoracic outlet syndrome can present with a wide constellation of clinical manifestations ranging from pain to paresthesia of the upper extremity, resulting in a challenge to correctly diagnose this syndrome. Treatment options range from nonoperative treatment, such as rehabilitation and physical therapy, to surgical correction, such as decompression of the neurovascular bundle.

Methods

Following a systematic review of the literature, we describe the need for a thorough patient history, physical examination, and radiologic images which have been reported to correctly diagnose neurogenic thoracic outlet syndrome. Additionally, we review the various surgical techniques recommended to treat this syndrome.

Results

Postoperative functional outcomes have been shown to be more favorable in arterial and venous thoracic outlet syndrome (TOS) patients when compared with neurogenic TOS patients, likely due to the ability to completely remove the site of compression in cases of vascular TOS as compared with incomplete decompression in neurogenic TOS.

Conclusions

In this review article, we provide an overview of the anatomy, etiology, diagnostic modalities, and current treatment options of correcting neurogenic TOS. Additionally, we offer a detailed step-by-step technique of the supraclavicular approach to the brachial plexus, a preferred approach for decompressing neurogenic TOS.

Conservative treatment for brachial plexus injury after a displaced clavicle fracture: a case report and literature review

Background

A brachial plexus injury is a rare complication of clavicle fractures. Previous case reports only examined the surgical outcomes of brachial plexus injuries that occurred after a clavicle fracture and did not report on the outcomes of conservative treatment. In this report, we present the prognosis of a patient with an acute displaced clavicle fracture accompanied by a brachial plexus injury that was conservatively treated.

Case presentation

A 51-year-old man with a middle-third clavicle fracture due to a direct trauma after falling down the stairs. A brachial plexus injury experienced symptoms, including numbness occurred in the affected upper extremity, at 1 day after the injury. The patient’s motor power in the elbow, wrist, and hand decreased at 3 days after the injury. Magnetic resonance imaging (MRI) showed no loss of continuity in the brachial plexus, but showed nerve compression by displaced fracture fragments. Electromyography revealed brachial plexopathy. Conservative treatment, including a shoulder sling, was performed with satisfactory outcomes; the patient reported a 70% improvement at 6 months after the injury.

Conclusions

A brachial plexus injury is a rare complication of clavicle fractures that can cause serious dysfunction of the upper extremities affected by the injury. Conservative treatment may be considered for acute nerve compression by displaced fracture fragments rather than extensive callus or granulation tissue formation to achieve a satisfactory recovery in young patients. MRI should typically be performed before making a treatment decision to examine the brachial plexus for any discontinuity or kinking.

Clavicle Fractures With Associated Acute Neurovascular Injury

Descriptions of acute neurovascular injury after clavicle fracture are limited to case reports. The objectives of this study were to assess both the prevalence of acute neurovascular injury after midshaft clavicle fracture and the outcomes of early fracture stabilization. A retrospective chart review was conducted of all adult patients with midshaft clavicle fracture who were treated surgically at 2 tertiary care referral centers from January 2010 to March 2019. The records of patients who were identified as having clinical or radiographic evidence of neurovascular compromise were reviewed to assess for deficits on physical examination on presentation, relevant radiographic and electro-diagnostic findings, timing and type of fixation, and time until resolution of symptoms and radiographic union postoperatively. Of the 443 adult patients undergoing surgical treatment for displaced midshaft clavicle fracture, 3 (1%) experienced acute neurovascular compromise and underwent early fixation. In all cases, fracture displacement caused compression of adjacent neurovascular structures in the costoclavicular space. No lacerations of underlying neurovascular structures were encountered intraoperatively, suggesting a pattern of nerve contusion or vascular compression from the initial injury and fracture displacement. Postoperatively, 2 patients had full recovery of preoperative neurologic deficits and 1 patient experienced partial recovery of motor deficits with persistent neuropathic pain. There were no instances of symptomatic vascular insufficiency at final follow-up. Acute neurovascular injury as a result of compression of underlying structures in the costoclavicular space is a rare complication of displaced midshaft clavicle fracture. Early surgical decompression of compressed neurovascular structures and rigid clavicle osteosynthesis can lead to significant postoperative functional improvement. [Orthopedics. 2021;44(3):e390-e394.].

Distribution of Peripheral Nerve Injuries in Patients with a History of Shoulder Trauma Referred to a Tertiary Care Electrodiagnostic Laboratory

Peripheral nerve injury after shoulder trauma is an underestimated complication. The distribution of the affected nerves has been reported to be heterogeneous in previous studies. This study aimed to describe the distribution of peripheral nerve injuries in patients with a history of shoulder trauma who were referred to a tertiary care electrodiagnostic laboratory. A retrospective chart review was performed for all cases referred to a tertiary care electrodiagnostic laboratory between March 2012 and February 2020. The inclusion criteria were a history of shoulder trauma and electrodiagnostic evidence of nerve injury. Data on patient demographics, mechanism of injury, degree of weakness, clinical outcomes at the final follow-up, and electrodiagnostic results were retrieved from medical records. Fifty-six patients had peripheral nerve injuries after shoulder trauma. Overall, isolated axillary nerve injury was the most common. A brachial plexus lesion affecting the supraclavicular branches (pan-brachial plexus and upper trunk brachial plexus lesions) was the second most common injury. In cases of shoulder dislocation and proximal humerus fracture, isolated axillary nerve injury was the most common. Among acromioclavicular joint injuries and clavicular fractures, lower trunk brachial plexus injuries and ulnar neuropathy were more common than axillary nerve or upper trunk brachial plexus injuries. Patients with isolated axillary nerve lesions showed a relatively good recovery; those with pan-brachial plexus injuries showed a poor recovery. Our study demonstrated the distribution of peripheral nerve injuries remote from displaced bony structures. Mechanisms other than direct compression by displaced bony structures might be involved in nerve injuries associated with shoulder trauma. Electrodiagnostic tests are useful for determining the extent of nerve damage after shoulder trauma.