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.

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.

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.

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.

The determinants of sick leave durations of Dutch self-employed.

This paper analyzes sickness absenteeism among self-employed in the Netherlands. Using a unique data set provided by a large Dutch private insurance company, we assess the determinants of sick leave durations. Our study suggests that several risk factors affect the sick leave durations of self-employed in a similar way as they influence the absence spells of employees according to the literature.

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.

Cervical spine surgery in rheumatoid arthritis: improvement of neurologic deficit after cervical spine fusion.

Ninety of 110 consecutive patients with rheumatoid deformities of the cervical spine surgically treated had associated neurologic deficits. Fifty-five patients had atlantoaxial subluxation. In this group, there were 16 Ranawat Class I patients (normal), 21 Class II (weakness, hyperreflexia, dysesthesia), 13 Class IIIA (paresis and long-tract findings but can ambulate), and five Class IIIB (quadriparesis and inability to ambulate).

Symptomatic metastatic malignant melanoma to the spine.

Fifteen patients with symptomatic metastatic melanoma were retrospectively reviewed. All patients had severe back pain, and seven presented with neurologic findings. The interval between spinal involvement and death was 5.

Recurrence of cervical spine instability in rheumatoid arthritis following previous fusion: can disease progression be prevented by early surgery?

In a retrospective study, 110 patients with rheumatoid arthritis who had cervical spine fusion were evaluated for recurrence of cervical spine instability and resultant need for further surgery. Recurrence of cervical instability was correlated with initial radiographic abnormality, primary surgical procedure and interval between the 2 surgeries. There were 55 patients who had atlantoaxial subluxation (AAS) and required C1-C2 fusion as primary surgery.

The use of freeze-dried fibular allograft in anterior cervical fusion.

Eighty-three segmental fusions were performed on 42 patients who underwent anterior cervical discectomy and fusion with freeze-dried fibular allograft for cervical spondylosis. Fusions were carried out over one to four levels. The mean follow-up period was 22.

Incidence of subaxial subluxation in patients with generalized rheumatoid arthritis who have had previous occipital cervical fusions.

A retrospective study of 79 patients with rheumatoid arthritis was undertaken to determine the incidence of subaxial subluxation after upper cervical fusions. Fifty-five patients had isolated axial subluxation and underwent atlantoaxial fusion. Twenty-four underwent occipitocervical fusion for atlantoaxial subluxation and superior migration of the odontoid.