Lumbosacral fracture-dislocation: a case managed conservatively, with return to heavy work

Traumatic lumbosacral instability: part 2-indications and techniques for surgical management

Traumatic lumbosacral instability (TLSI) refers to a traumatic disruption of the axial skeleton at the level of the lumbosacral motion segment and/or sacrum, resulting in mechanical separation of the caudal spinal column from the posterior pelvic ring. Managing TLSI and its four underlying conditions poses unique challenges among spinal and pelvic injuries. This second part of a two-part series focuses on treatment strategies and decision making in TLSI, with an emphasis on surgical stabilization techniques. The primary objectives of this article are to: (1) elucidate factors influencing clinical decision-making, (2) synthesize current treatment options for the injury patterns underlying TLSI, and (3) briefly outline expected outcomes and complications.

Traumatic Lumbar Spondylolisthesis: A Systematic Review and Case Series

STUDY DESIGN

Systematic review and case series.

OBJECTIVES

Any acute injury to the posterior elements of the lumbar spine resulting in listhesis is considered a traumatic spondylolisthesis. This rare injury caused by high-energy trauma is variably described in the literature as fracture-dislocation, where only case reports and series have been published. Our objectives were to propose evidence-based treatment recommendations and a new classification system for this injury.

METHODS

A systematic review of literature from PubMed, EMBASE, and Cochrane without time frame limitations was performed, which included 77 level IV and V articles and 9 patients as case series in the analysis.

RESULTS

A total of 125 cases were reviewed with mean age of 30.5 years. Half of the cases resulted from a vehicular accident. Back pain presented in 82%, while 50% had neurologic deficits. Operative treatment was performed in 93.6% (posterior decompression [PD] = 4%; posterior spinal fusion [PSF] = 43.2%; interbody fusion [IB] = 46.4%) with overall fusion rates of 74%. Binomial regression analysis for achieving solid fusion showed a 28.6× higher odds for IB compared to PSF (P = .008, r ² = 0.633). Subanalysis of cases with disc injuries revealed higher fusion outcomes for IB (87%) compared to PSF (46%; P = .006), while there were no significant differences for patients without disc injury. Pain and neurological symptoms improved significantly on final follow-up (P < .001). Overall complication rate was 22%.

CONCLUSION

Operative management with reduction, decompression for neurologic deficits, instrumentation, and fusion is recommended for traumatic spondylolisthesis. Interbody fusion is recommended to achieve better fusion outcomes especially with preoperatively identified disc lesions.

Rare Case of Bilateral Pure Facet Joint Dislocation of Upper Lumbar Spine without Facet Fracture: A Case Report

Introduction

Bilateral facetal dislocation without facet fracture, although common in cervical spine, is a very rare entity in lumbar spine with <15 cases reported so far. Such injuries are very unstable involving all the three columns. Neurological insult and visceral affection are commonly associated with bilateral facetal dislocation.

Case Report

A 22-year-old gentleman presented with ASIA Aparaplegia following road traffic accident. Radiographs/computed tomography scan revealed pure facetal dislocation L1-L2 with no evidence of facet fracture. The patient also had liver laceration. The patient underwent open instrumented reduction along with left-sidedtransforaminal removal of damaged disc and inter body fusion. The patient improved significantly to ASIA C neurological status at 6-month follow-up.

Conclusion

Pure facetal dislocation, although rarely seen in lumbar region, is a very unstable injury. Prompt recognition and early intervention facilitate nursing care and neurological recovery. Recognition of associated injuries is also important.

Traumatic Lumbosacral Dislocation: Current Concepts in Diagnosis and Management

Traumatic lumbosacral dislocation is a rare, high-energy mechanism injury characterized by displacement of the fifth lumbar vertebra in relation to the sacrum. Due to the violent trauma typically associated with this lesion, there are often severe, coexisting injuries. High-quality radiographic studies, in addition to appropriate utilization of CT scan and MRI, are essential for proper evaluation and diagnosis. Although reports in the literature include nonoperative and operative management, most authors advocate for surgical treatment with open reduction and decompression with instrumentation and fusion. Despite advances in early diagnosis and management, this injury type is associated with significant morbidity and mortality, and long-term patient outcomes remain unclear.

Unilateral lumbosacral dislocation: case report and a comprehensive review

Lumbosacral fracture-dislocation is a rare occurrence. There are more than 73 cases reported in the English literature. We report on the imaging findings and surgical treatment in a patient suffered of unilateral traumatic L5-S1 dislocation associated with severe disruption of the posterior ligamentous complex. The patient underwent open reduction and stabilization of L4-S1 vertebrae with posterior instrumentation system. Open reduction and internal fixation was mandatory as post-traumatic ligamentous insufficiency would lead to abnormal motion. Operative treatment managed to produce a solid arthrodesis and restore stability of the lumbosacral junction. Follow-up revealed excellent results. This study reports a rare injury of the lumbosacral junction, and the literature concerning this unusual condition is extensively reviewed.

Bilateral locked facets at lower lumbar spine without facet fracture: a case report

Bilateral locked facets at L4-5 without facet fracture is a rarely known disease. We present a case of a 37-year-old male patient diagnosed as traumatic L4-5 bilateral facets dislocation without facet fracture. We carried out open reduction, epidural hematoma removal, posterior interbody fusion. After surgery, we attained rapid improvement of the neurologic deficits and competent stabilization.

Lumbosacral dislocation: a review of the literature and current aspects of management

Lumbosacral fracture dislocation is a very rare lesion and was first described by Watson-Jones in 1940. Two anatomical classifications are described in the literature, all other reports are case presentations. This fracture type is characterised by an antero- or retrolisthesis or a lateral translation of the 5th lumbar vertebra in relation to the sacrum. Biomechanics are discussed controversially. Most patients suffer from a high energy trauma with concomitant severe injuries. There is a high rate of additional neurological deficits. Fractures of the transverse process are thought to be sentinel fractures. MRI and CT scans are essential to detect the whole extent of the lesion. Circumferential fusion is recommended by several authors to regain stability at the lumbosacral junction.

Traumatic lumbosacral dislocation treated with posterior lumbar interbody fusion using intersomatic cages

A 35-year-old man was struck by a car on his right side and presented with paraparesis of both lower extremities. Radiographic examination revealed multiple transverse process fractures and anterior displacement of L5 on S1. Computed tomography revealed a bilateral anterior facet dislocation of the fifth lumbar vertebra on the sacrum. MRI showed rupture of the posterior ligamentous complex. A posterior lumbar interbody fusion using two intersomatic cages and pedicle screw instrumentation and posterior fusion were performed. Although no major disc lesion was found at the level of L5-S1 on preoperative MRI, a severely collapsed L5-S1 disc was found intraoperatively. Two years after surgery, the patient was asymptomatic with normal neurological findings, and has resumed normal activity. We believe that lumbosacral dislocation can be considered a three-column injury with an L5-S1 disc lesion, and, therefore, requires a solid circumferential segmental arthrodesis to improve fusion rate.

[Traumatic lumbosacral fracture dislocation: a case report and review of the literature]

Lumbosacral dislocation is uncommon. We report a case of traumatic lumbosacral dislocation which occurred in a 33-year-old pedestrian traffic accident victim. The posterior impact produced lumbar injury with diffuse pain exacerbated at the lumbosacral junction. Ecchymotic diffusion involving the entire lumbar region fluctuated due to the presence of a subcutaneous hematoma. The neurological examination revealed incomplete L5 paraplegia. Standard x-rays revealed L5-S1 spondylolisthesis and fracture of the L5 spinous process as well as fractures of the L3, L4, and L5 transverse processes. Computed tomography disclosed biarticular L5-S1 fracture dislocation and a voluminous herniation of the L5-S1 disc. Emergency surgery was performed and revealed subaponeurotic detachment from T4 to S1 and bald iliac pyramids. After L5 laminectomy and extraction of the voluminous herniation of the L5-S1 disc, a short L5-S1 posteriolateral fusion was achieved using pedicular screws and two rods on either side as well as a posterolateral iliac autograft. The clinical course was satisfactory with nearly complete neurological recovery (persistent levator ani paresis). This clinical case and a review of the literature illustrate the pathogenic, clinical, radiological and therapeutic aspects of lumbosacral fracture dislocation.

Traumatic dislocation of the lumbosacral junction diagnosis, anatomical classification and surgical strategy

Traumatic lumbosacral dislocation is a rare lesion often characterised by a fracture dislocation of L5-S1 articular facets associated with anterior L5 slipping. Because of its rarity, the surgical strategy of lumbosacral traumatic dislocation remains controversial. We report the most important series of traumatic lumbosacral dislocation. The cases of six men and five women are presented. We discuss the diagnosis and surgical treatment options regarding the different type of lesions. A moderate anterior slipping of L5 over S1 was present in eight cases. The lesion was a bilateral lumbosacral fracture dislocation in eight cases, a pure lateral dislocation in two cases and a unilateral rotatory dislocation in one case. Patients were multiple-trauma patients in eight cases. A radicular deficit was present in two cases. All patients were treated surgically with a posterior osteosynthesis and fusion. A circumferential fusion was made in six cases. In four cases, the anterior fusion was made during the posterior approach. The postoperative course was favorable in all the cases. One patient necessitated secondarily an iterative posterior lumbosacral fixation and anterior fibular bone graft because of a lumbosacral pseudarthrosis. Traumatic dislocation of the lumbosacral junction is a rare and severe spinal fracture which occurs in patients after high energy trauma and could be initially misdiagnosed. We devised a new classification based on anatomical lesions. Treatment is always surgical, requiring reduction, osteosynthesis, and fusion. In case of L5 anterior slipping, it is crucial to assess the L5S1 disc by MRI or surgical exploration for disc disruption. In such case, we recommend to perform circumferential fusion to prevent lumbosacral pseudarthrodesis.

Acute traumatic L5-S1 spondylolisthesis: a case report

STUDY DESIGN

Case report of a patient treated surgically 2 months after sustaining a misdiagnosed acute traumatic lumbosacral dislocation is presented.

OBJECTIVES

The aims is to report in full about an uncommon case of anterior traumatic L5-S1 spondylolisthesis treated successfully with combined posterior stabilization and anterior fusion.

SUMMARY OF BACKGROUND DATA

Review of literature shows that traumatic lumbosacral dislocations and its treatment by open reduction and internal fixation are rare with only few well-documented case reports.

METHODS

We report the case of a 37-year-old man, who sustained a work-related traumatic lumbosacral dislocation. The delayed diagnosis of traumatic L5-S1 spondylolisthesis was initially missed and first treated, when the patient was transferred to the author's institution because of persistent neurological deficits. In the following the patient was successfully reduced and stabilized with posterior internal fixation and anterior interbody fusion. This case is documented in detail with radiographs, CT and MRI scans, as well as clinical pictures.

RESULTS

At a 1.5-year follow-up complete fusion was achieved. The patient returned to work on the same job before injury, ambulating pain-free with a good subjective back-function and no limitations carrying out his recreational activities. At follow-up he had persistent sensible S1 nerve root deficits (ASIA grade E).

CONCLUSIONS

Traumatic lumbosacral spondylolisthesis is a rare injury pattern. Its diagnosis can be missed initially, therefore computed tomography with biplanar reconstructions is mandatory in addition to good-quality conventional radiographs to plan and carry out such challenging management problems successfully. Surgical treatment for reduction, stabilization and interbody fusion is the method of choice.

Traumatic Anterior Lumbosacral Dislocation Caused by Hyperextension Mechanism in Preexisting L5 Spondylolysis

Of many reports referring to injury mechanism in anterior lumbosacral dislocation, there were none concerning hyperextension mechanism. We report a case of a 46-year-old man with preexisting L5 spondylolysis sustaining traumatic complete anterior lumbosacral dislocation. The operative findings, together with the radiologic findings, strongly suggested that the dislocation occurred by hyperextension mechanism. Open reduction was done by applying force of distraction with flexion using a rod and screw system, followed by the internal fixation from the L3 to S1 vertebrae and the postero-superior iliac spine. The lumbosacral dislocation was reduced to 77%. At the follow-up at 5 years after surgery, bony union was obtained and the patient could move with a wheelchair although the neurologic deficit in lower extremities observed preoperatively did not recover. Preexisting L5 spondylolysis was considered to increase the potential for anterior lumbosacral dislocation by additional force of compression with hyperextension. Posterior instrumentation using a rod and screw system was considered a useful method for reduction, decompression, stabilization, and fusion.

Traumatic lumbosacral dislocation: report of two cases

STUDY DESIGN

A retrospective study of 2 patients with traumatic lumbosacral dislocation.

OBJECTIVES

To discuss the difficulty in making diagnosis and the effect of surgical treatment.

SUMMARY OF BACKGROUND DATA

Traumatic lumbosacral dislocation is an uncommon injury, which creates diagnostic difficulty and is typically managed by open reduction internal fixation of the lumbosacral spine.

METHODS

Medical notes and imaging of the 2 patients were reviewed.

RESULTS

Both patients were engaged in high-energy accidents and had concomitant injuries. Patient 1 was initially misdiagnosed as having L5 lytic spondylolisthesis and was treated with a lumbar corset. She developed progressive low back and left leg pain. Eleven months after the accident, a bilateral lumbosacral dislocation with right S1 superior facet fracture, disc rupture, posterior soft tissue disruption, and a resultant Grade 4 L5-S1 traumatic spondylolisthesis was identified. She underwent open reduction, followed by a staged anteroposterior spinal arthrodesis using instrumentation with excellent results. Patient 2 sustained a unilateral L5-S1 facet dislocation without neurologic deficit, which reduced spontaneously. The evaluation demonstrated a grossly disturbed posterior ligamentous complex adjacent to the lumbosacral articulation. A combined anteroposterior spinal fusion with instrumentation was performed with favorable outcome.

CONCLUSION

Meticulous clinical examination and careful imaging assessment, including CT and MRI, assist an early diagnosis in cases of lumbosacral dislocation. Open reduction and circumferential bony fusion restore segmental stability and painless function.

Acute traumatic lumbosacral dislocation treated by open reduction internal fixation and fusion

STUDY DESIGN

Case report of a patient with acute traumatic lumbosacral dislocation.

OBJECTIVE

To report a case of traumatic lumbosacral dislocation treated with open reduction internal fixation and fusion.

SUMMARY OF BACKGROUND DATA

To our knowledge, there are only 49 cases reported in the literature of this exceptional lesion. Complete lumbosacral dislocation is a three-column lesion, and therefore, open reduction internal fixation and fusion is recommended.

METHOD

We report the case of a 42-year-old man who had a vehicle accident. In addition to other fractures, he suffered an anterior lumbosacral dislocation. The displacement of L5 on S1 was 35%. The patient was surgically treated with open posterior reduction fixation and fusion with good result.

RESULTS

Complete fusion was achieved, and at 5 years follow-up, the patient was asymptomatic, and no further slippage has been observed.

CONCLUSIONS

A rare case of acute anterior lumbosacral dislocation treated surgically is reported. We consider the surgical treatment for reduction, decompression, stabilization, and fusion as the method of choice in acute cases of this exceptional condition.

Traumatic lumbosacral dislocation

STUDY DESIGN

Case report of a patient with lumbosacral dislocation.

OBJECTIVES

To report a case of traumatic lumbosacral dislocation treated nonoperatively, with 10 years of follow-up.

SUMMARY OF BACKGROUND DATA

Lumbosacral dislocation is rare, with only 48 cases reported in the literature. Surgical treatment by means of open reduction and fusion is advisable. However, the literature shows six cases of patients with complete lumbosacral dislocation treated nonoperatively with good results.

METHODS

A 38-year-old man was involved in a highspeed vehicle accident. The lumbosacral dislocation (anterior displacement of L5 on S1, 44% slippage) was initially missed, and the patient was treated conservatively.

RESULTS

Slippage did not progress, and the patient returned to full, normal activity. Ten years later he is asymptomatic and is able to work and play sports.

CONCLUSIONS

This study reports a rare injury of the lumbosacral junction that was detected 3 months after injury. Satisfactory results were obtained with nonoperative treatment in this case. Although a surgical approach is advisable in acute cases to decompress the neurologic structures and to stabilize the lumbosacral junction, conservative management may be the treatment of choice in inveterate lesions.

Traumatic spondylopelvic dissociation. A case report and literature review

STUDY DESIGN

A case of traumatic spondylopelvic dissociation and a method of fixation are described.

OBJECTIVES

The treatment of this rare injury pattern required differentiation from less severe lumbosacral fracture-dislocations or bilateral sacroiliac joint dislocations.

SUMMARY OF BACKGROUND DATA

Several case reports have described less severe fracture patterns, but only a handful have illustrated true spondylopelvic dissociation in which there is complete displacement of the lumbar spine into the pelvis.

METHODS

After initial stabilization at an outside hospital, the patient was transferred to the authors' institution for definitive care. After computed tomography imaging with three-dimensional multiplanar reconstruction, the fracture was stabilized with a pedicle screw construct attached to the pelvis by means of the Galveston technique. Bilateral iliosacral screws were used to increase stability.

RESULTS

At a 2-year follow-up, the patient was pain-free and ambulating in an ankle-foot orthosis. He had a persistent deficit involving the right L5 and S1 nerve roots but was continent of stool.

CONCLUSIONS

The unique fracture pattern described in this patient is presented to offer better insight into management of this complex injury and to delineate it from simpler patterns of injury to the lumbosacral junction.

Closed reduction of lumbosacral fracture dislocations

A unique method for closed reduction of lumbosacral fracture dislocations that uses a circle-electric bed is described. Fine radiological description of the injury with computed tomography scanning allows the application of appropriate forces to facilitate the reduction, while having the patient awake during the procedure greatly reduces the chance of introducing further neurological deficit.

Lateral lumbosacral fracture dislocation: a case report

A case of lateral fracture dislocation of the fifth lumbar vertebra on the sacrum successfully treated by open reduction is described. The literature of this injury is reviewed.