Uncommon presentation of a chronic recurrent symptomatic encapsulated calcified postoperative paraspinal lumbar hematoma: A case report.

Paraspinal hematomas are common complications following spine surgery. In general, these hematomas are asymptomatic and resolve without issue. Unfortunately, there is a paucity of literature that describes the recurrence of these hematomas in a chronic setting.

A New High-Speed Shielded Curved Device Allowing Safe Posterior Thoracic Discectomy Through a Modified Transforaminal Thoracic Interbody Fusion Approach: Technique Description and Case Series.

Background: The appropriate approach for surgical removal of thoracic disc herniations is controversial. The posterior approach historically acquired a bad reputation due to high rates of neurologic deterioration subsequent to spinal cord manipulation. The anterior approach has consequently gained popularity but entails a larger magnitude of surgery if open and is technically demanding if approached thoracoscopically.

Long-Term Clinical Experience with Selectively Constrained SECURE-C Cervical Artificial Disc for 1-Level Cervical Disc Disease: Results from Seven-Year Follow-Up of a Prospective, Randomized, Controlled Investigational Device Exemption Clinical Trial.

Background: This research was initiated to compare the long-term clinical safety and effectiveness of the selectively constrained SECURE-C (Globus Medical, Audubon, Pennsylvania) Cervical Artificial Disc to anterior cervical discectomy and fusion (ACDF). To preserve segmental motion, cervical total disc replacement (CTDR) was developed as an alternative to ACDF. Current CTDR designs incorporate constrained and unconstrained metal-on-metal or metal-on-polymer articulation with various means of fixation.

Effect of an Outer Sleeve on an Inflatable Balloon Tamp in Terms of Height Restoration Under Simulated Physiological Load.

Study Design: An in vitro biomechanical study.

Objective: The aim of this study was to determine the effect of an optional sleeve on height restoration and compare it with the fracture reduction achieved by a commercially available inflatable bone tamp under simulated physiological load (110 N).

Summary Of Background Data: Loss of reduction after bone tamp deflation before cement injection still remains a concern.

An In Vitro Evaluation of Fracture Reduction Achieved by Inflatable Bone Tamps Under Simulated Physiological Load.

Study Design: An in vitro biomechanical study.

Objective: To determine the fracture reduction achieved by a novel inflatable bone tamp under simulated physiological load.

Summary Of Background Data: Previous biomechanical studies have showed that kyphoplasty allows near-total restoration of lost vertebral height in unloaded conditions and partial height restoration under simulated physiological loads.

Clinical outcomes with selectively constrained SECURE-C cervical disc arthroplasty: two-year results from a prospective, randomized, controlled, multicenter investigational device exemption study.

Study Design: Prospective, multicenter, randomized, and controlled Investigational Device Exemption clinical trial.

Objective: To compare the clinical safety and effectiveness of the selectively constrained SECURE-C (Globus Medical, Audubon, PA) Cervical Artificial Disc to anterior cervical discectomy and fusion (ACDF).

Summary Of Background Data: Cervical total disc replacement has been developed as an alternative to ACDF by allowing segmental motion.

A biomechanical evaluation of a spacer with integrated plate for treating adjacent-level disease in the subaxial cervical spine.

Background Context: Adjacent level degeneration (ALD) has been reported as one of the long-term consequences of anterior discectomy and fusion despite its clinical success in treating cervical pathologies. Traditionally, ALD is treated by replacing the previously implanted plate with a longer plate, which can lead to postoperative complications. The biomechanics of SIP in the adjacent level has not been investigated.

The da Vinci robotic surgical assisted anterior lumbar interbody fusion: technical development and case report.

Study Design: Technique development to use the da Vince Robotic Surgical System for anterior lumbar interbody fusion at L5-S1 is detailed. A case report is also presented.

Objective: To evaluate and develop the da Vinci robotic assisted laparoscopic anterior lumbar stand-alone interbody fusion procedure.

The biomechanical stability of a novel spacer with integrated plate in contiguous two-level and three-level ACDF models: an in vitro cadaveric study.

Background Context: Anterior cervical plating increases stability and hence improves fusion rates to treat cervical spine pathologies, which are often symptomatic at multiple levels. However, plating is not without complications, such as dysphagia, injury to neural elements, and plate breakage. The biomechanics of a spacer with integrated plate system combined with posterior instrumentation (PI), in two-level and three-level surgical models, has not yet been investigated.

Clinical experience using Cortoss for treating vertebral compression fractures with vertebroplasty and kyphoplasty: twenty four-month follow-up.

Study Design: Forty patients were enrolled in 2 FDA-approved pilot Investigational Device Exemption (IDE) studies using Cortoss for the treatment of vertebral compression fractures (VCF). Twenty patients were treated at 3 centers, using vertebroplasty (VP) and 20 patients were treated at 5 centers, using kyphoplasty (KP).

Objective: To assess the feasibility and clinical outcomes using Cortoss to treat osteoporotic VCF.

Yeast strains with N-terminally truncated ribosomal protein S5: implications for the evolution, structure and function of the Rps5/Rps7 proteins.

Ribosomal protein (rp)S5 belongs to the family of the highly conserved rp's that contains rpS7 from prokaryotes and rpS5 from eukaryotes. Alignment of rpS5/rpS7 from metazoans (Homo sapiens), fungi (Saccharomyces cerevisiae) and bacteria (Escherichia coli) shows that the proteins contain a conserved central/C-terminal core region and possess variable N-terminal regions. Yeast rpS5 is 69 amino acids (aa) longer than the E.

Anterior lumbar fusion with paired BAK standard and paired BAK Proximity cages: subsidence incidence, subsidence factors, and clinical outcome.

Background Context: Anterior lumbar interbody fusion (ALIF) procedures have a known incidence of subsidence. The individual risk of subsidence for specific lumbar levels in ALIF procedures has not been determined.

Purpose: To evaluate the incidence of subsidence with two ALIF constructs.

The natural history of spondylolysis and spondylolisthesis: 45-year follow-up evaluation.

Study Design: A prospective study of spondylolysis and spondylolisthesis was initiated in 1955 with a radiographic and clinical study of 500 first-grade children.

Objective: To determine the natural history of spondylolysis and spondylolisthesis.

Summary Of Background Data: Most studies on the natural history of spondylolysis and spondylolisthesis are based on patient populations presenting with pain.

Airway complications associated with surgery on the anterior cervical spine.

Study Design: Retrospective chart review of 311 anterior cervical procedures.

Objectives: To assess the incidence and variables that predispose to an airway complication in a large series of anterior cervical surgical procedures.

Summary Of Background Data: A rare but potentially lethal complication after anterior cervical spine surgery is respiratory compromise and airway obstruction.

Recurrent laryngeal nerve injury with anterior cervical spine surgery risk with laterality of surgical approach.

Study Design: A detailed review of anterior cervical fusion procedures from a university-based spine specialty service was completed. Noted were the laterality of approach, number of levels, discectomy or corpectomy, use of instrumentation, and cases of reoperation.

Objectives: The primary purpose of the study is to determine whether there is in fact a greater risk of recurrent laryngeal nerve (RLN) injury with approach on the right or left side.

[Flow cytometric examinations of patients after radical surgery for prostatic cancer].

Biological behavior of prostatic cancer is influenced by different tumor factors. The proliferative activity of the malignancies could be one of those parameters which serve as basis to design therapy and to estimate prognosis. Here ploidity and S-phase fraction of 44 prostatic cancer obtained by radical prostatectomy were compared to other known tumor characteristics (PSA, staging, grading).

DNA content of prostatic cancer measured by flow cytometry in patients undergoing radical prostatectomy.

The biological behavior of prostatic cancer is influenced by many host and tumor factors. The proliferative activity of the malignancies can be one of those parameters which serve as the basis to estimate prognosis and design treatment. Here, DNA content and S-phase fraction of prostatic cancer samples obtained by radical prostatectomy from 46 patients were related to other known tumor characteristics (PSA, staging, grading).

Malignant schwannoma of kidney capsule.

This report is of a malignant schwannoma originating in the capsule of the right kidney. Using sonography, nephroangiography, cavography, computer tomography, and bone scanning, metastases in the kidney or a retroperitoneal tumor could be diagnosed. After transperitoneal exploration, the right kidney and mesenteric metastases were removed.

[Value of computer tomography in staging urological tumors before radical surgery].

The authors investigated by conventional CT 66 urological tumorous patients before radical operations, and compared with the findings of the histological investigations of the lymph nodes removed by the lymphadenectomy. The coincidence between the two investigations were 80%.

[Chordoma as osteolytic space-occupying lesion of the anterior lumbar spine].

A case of a 78-year old woman with a chordoma destroying the second lumbal vertebra is reported. Radiologic and histologic feature of this rarely diagnosed tumor is demonstrated. An overview about the therapeutic modalities is given.

[Post-traumatic hematoma simulating a left-sided adrenal gland tumor].

Typical signs of posttraumatic adrenal gland haematoma in computer-tomography are, besides an enlargement of the adrenal gland, a stripy infiltration of surrounding tissue and a thickening of the homolateral crus of the diaphragma, located primarily in the right adrenal gland. We report a case of an isolated enlargement of the left adrenal gland with normal surrounding tissue, which histologically proved to be a posttraumatic hematoma within the adrenal gland medulla.

[Malignant schwannoma of the renal capsule].

The authors report on a malignant schwannoma originating in the capsule of the right kidney. By sonography, nephroangiography, cavography, computer tomography and bone scanning, metastases in the kidney or a retroperitoneal tumor could be diagnosed. After transperitoneal exploration, the right kidney and mesenteric metastases were removed.