Publications by authors named "Kevin Jacob"

Study Design: Retrospective review.

Objective: This study aims to compare postoperative patient-reported outcome measures (PROMs) in predominant back pain (PBP) versus predominant leg pain (PLP) patients following lumbar fusion for degenerative spondylolisthesis (DS).

Summary Of Background Data: Prior studies comparing PROMs in patients undergoing lumbar fusion with PBP versus PLP symptoms have included heterogeneous spinal pathology and restricted analysis to posterior fusion techniques.

View Article and Find Full Text PDF

This review provides a detailed analysis of the anatomy, mechanisms, and management of ligamentous and capsular injuries in metacarpophalangeal joints (MCPJs). The MCPJ is a condyloid joint with unique anatomical features, including a sagittal cam effect that enhances stability in flexion. Ligaments, tendons, and joint capsules contribute to the overall stability and mobility of MCPJs.

View Article and Find Full Text PDF

A 34-year-old female patient, with no comorbidities, presented with complaints of upper back pain across the shoulders, with altered sensation on the left side from trunk to lower limb, which was associated with reduced motor function and an acute symptom of urinary retention. On examination, there was reduced power in the left lower limb, reduced anal tone, a positive Babinski sign bilaterally, and reduced sensation in the perianal region. Serial magnetic resonance imaging (MRI) scans were conducted, where initially an upper thoracic lesion suggestive of an intramedullary cavernoma was found, and nearly a decade later, an adjacent extradural lesion causing cord compression was found incidentally through a surgical procedure.

View Article and Find Full Text PDF

Study Design: Retrospective review.

Objective: To compare perioperative and postoperative clinical outcomes between minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) and lateral lumbar interbody fusion (LLIF) in patients presenting with predominant back pain.

Background: Two popular techniques utilized for lumbar arthrodesis are MIS-TLIF and LLIF.

View Article and Find Full Text PDF

Introduction: A positive margin after mastectomy increases the risk of breast cancer recurrence and the morbidity associated with re-excision or chest wall irradiation. This study aimed to identify factors that may predict margin status after mastectomy.

Methods: Women with Tis-T3 breast cancers who underwent mastectomy from 2014 to 2020 were retrospectively analyzed.

View Article and Find Full Text PDF

Background: The objective of this study was to evaluate the influence of two crucial variables, the American Society of Anesthesiologists (ASA) score and operative time, on the occurrence of surgical site infections (SSIs) in the context of major abdominal surgical procedures.

Methodology: A cross-sectional research study involved patients undergoing various gastrointestinal surgical procedures. Surgical details, procedure duration, and ASA score were meticulously documented.

View Article and Find Full Text PDF

Electromagnetic methods for non-destructive evaluation (NDE) are presented, with which sheet metal components can be identified and their material properties can be characterized. The latter is possible with 3MA, the Micromagnetic Multiparametric Microstructure and stress Analyser. This is a combination of several micromagnetic NDE methods that make it possible to analyse the microstructure in a ferromagnetic material and to determine quantitative values of the mechanical material properties or the stress state.

View Article and Find Full Text PDF

Study Design: Retrospective cohort.

Objective: The aim was to compare patient-reported outcomes (PROMs), minimum clinically important difference (MCID) achievement, and postoperative satisfaction following minimally invasive lumbar decompression in patients stratified by American Society of Anesthesiologists (ASA) classification.

Summary Of Background Data: Some guidelines recommend against performing elective procedures for patients with an ASA score of 3 or greater; however, long-term postoperative outcomes are not well described.

View Article and Find Full Text PDF

Study Design: Retrospective Cohort.

Objective: To evaluate patient-reported outcome measures (PROM) and minimal clinically important difference (MCID) achievement outcomes between anterior cervical discectomy and fusion (ACDF) and cervical disk replacement (CDR) in the Workers' Compensation (WC) population.

Summary Of Background Data: No studies to our knowledge have compared PROMs and MCID attainment between ACDF and CDR among patients with WC insurance undergoing surgery in an outpatient ambulatory surgical center (ASC).

View Article and Find Full Text PDF

Study Design: Retrospective cohort.

Purpose: To assess preoperative arm pain severity influence on postoperative patient-reported outcomes measures (PROMs) and minimal clinically important difference (MCID) achievement following single-level anterior cervical discectomy and fusion (ACDF).

Overview Of Literature: There is evidence that preoperative symptom severity can affect postoperative outcomes.

View Article and Find Full Text PDF

Background: Existing literature has not yet evaluated the impact of postoperative length of stay (LOS) on patient-reported outcome measures (PROMs) and minimum clinically important difference (MCID) in patients undergoing anterior lumbar interbody fusion (ALIF). The authors investigates the influence of postoperative LOS following ALIF on PROMs and MCID achievement rates.

Methods: A single-surgeon database was retrospectively reviewed for patients undergoing single-level ALIF.

View Article and Find Full Text PDF

Background: Prior studies associate male gender with higher complication rates following anterior cervical discectomy and fusion (ACDF), but none has investigated gender influence on patient-reported outcome measures (PROMs) and minimal clinically important difference (MCID) following single-level ACDF.

Methods: Patients undergoing primary, single-level ACDF were divided into female and male groups. Visual analog scale (VAS) neck/arm, Neck Disability Index (NDI), 12-item short form (SF-12) physical composite score (PCS), PROM information system physical function (PROMIS-PF), and veterans RAND 12-item (VR-12) health survey PCS were collected preoperatively and postoperatively.

View Article and Find Full Text PDF

Background: Effective pain management is paramount for outpatient surgical success. This study aims to report a case series of patients undergoing cervical disc replacement (CDR) in an ambulatory surgery center (ASC) with the use of an enhanced multimodal analgesic (MMA) protocol.

Methods: Primary, single-/2-level CDR procedures at an ASC with an enhanced MMA protocol were included.

View Article and Find Full Text PDF

Introduction: Limited studies have compared minimally invasive transforaminal lumbar interbody fusion (MIS TLIF) with anterior lumbar interbody fusion (ALIF) for the treatment of isthmic spondylolisthesis. This study aims to compare perioperative variables, patient-reported outcome measures (PROMs), and minimal clinically important difference (MCID) achievement rates between these surgical approaches.

Methods: Patients with isthmic spondylolisthesis undergoing primary, single-level MIS TLIF or ALIF were identified in a surgical database.

View Article and Find Full Text PDF

Background: This study aimed to evaluate the impact of expert breast pathology consultation on operative management and predictive factors of discordant diagnosis.

Methods: A retrospective review of patients referred with breast biopsies and subsequent expert pathology consultation from 2014 to 2019. Discordance in diagnosis and documented changes in therapy were recorded.

View Article and Find Full Text PDF

The minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) is a popular surgical technique for lumbar arthrodesis, widely considered to hold great efficacy while conferring an impressive safety profile through the minimization of soft tissue damage. This elegant approach to lumbar stabilization is the byproduct of several innovations throughout the past century. In 1934, Mixter and Barr's paper in the New England Journal of Medicine elucidated the role of disc herniation in spinal instability and radiculopathy, prompting surgeons to explore new approaches and instruments to access the disc space.

View Article and Find Full Text PDF

High-pressure-torsion (HPT) processing introduces a large density of dislocations that form sub-grain boundaries within the refined nano-scale structure, leading to changes in precipitate morphology compared to hot-rolled maraging steels. The impact of such nanostructuring on the deformation and fracture micro-mechanisms is being reported for the first time usingcharacterization techniques along with transmission electron microscopy and atom probe tomography analysis, in this study. Digital image correlation has been used to quantify the full field strain maps in regions of severe strain localization as well as to determine the fracture toughness through critical crack tip opening displacements.

View Article and Find Full Text PDF

While anterior lumbar interbody fusion (ALIF) is known as an established and safe procedure for treatment of degenerative disc disease, albeit rare, the development of postoperative intra-abdominal or retroperitoneal collection of lymph warrants timely diagnosis and management. This study presents the case of a 62-year-old male who underwent L4-L5 and L5-S1 ALIF and developed a persistent left-sided fluid collection, resulting in a symptomatic retroperitoneal lymphocele confirmed by computed tomography (CT). After percutaneous drainage by interventional radiology (IR), output remained high at 1 liter (L) per day, necessitating sclerotherapy with doxycycline and ethanol.

View Article and Find Full Text PDF

Objective: To compare patient-reported outcome measures (PROMs), satisfaction, and minimum clinically important difference (MCID) achievement after minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) in patients stratified by preoperative leg pain.

Methods: Patients undergoing MIS-TLIF were collected through retrospective review of a prospectively maintained single-surgeon database. PROMs administered preoperatively/postoperatively included Patient-Reported Outcomes Measurement Information System Physical Function (PROMIS-PF), visual analog scale (VAS) back/leg pain, Oswestry Disability Index (ODI), and 12-Item Short Form (SF-12) Physical/Mental Component Score (PCS/MCS).

View Article and Find Full Text PDF

Objective: We aim to compare perioperative/postoperative clinical outcomes between minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) and anterior lumbar interbody fusion (ALIF) in patients presenting for revision surgery.

Methods: A retrospective database was reviewed for procedures between November 2005 and December 2021. Revision MIS-TLIF/ALIFs were included, whereas primary fusions or diagnosis of infection/malignancy/trauma were excluded.

View Article and Find Full Text PDF

Study Design: Retrospective study.

Purpose: To compare perioperative outcomes, patient-reported outcome measures (PROMs), and minimal clinically important difference (MCID) achievement rates for an obese patient cohort between single-level minimally invasive (MIS) transforaminal lumbar interbody fusion (TLIF) vs. anterior lumbar interbody fusion (ALIF).

View Article and Find Full Text PDF

Study Design: This was a retrospective cohort study.

Purpose: This study investigated the influence of preoperative mental health on patient-reported outcome measures (PROMs) and minimal clinically important difference (MCID) among workers' compensation (WC) recipients undergoing minimally invasive transforaminal lumbar interbody fusion (MIS TLIF).

Overview Of Literature: No studies have evaluated the impact of preoperative mental functioning on outcomes following MIS TLIF among WC claimants.

View Article and Find Full Text PDF

Introduction: This study compares perioperative and postoperative clinical outcomes in patients undergoing anterior cervical diskectomy and fusion (ACDF) or cervical disk replacement (CDR) at C5-C6 in patients with myeloradiculopathy.

Methods: Primary, elective, single-level CDR or ACDF procedures at C5-C6 for patients with myeloradiculopathy were included. Patient-reported outcome measures (PROMs) included visual analog scale (VAS) neck, VAS arm, Neck Disability Index (NDI), Patient-Reported Outcomes Measurement Information System Physical Function (PROMIS-PF), and Short-Form 12-Item Physical Composite Score (SF-12 PCS) collected at preoperative/6-week/12-week/6-month/1-year time points.

View Article and Find Full Text PDF

Objective: To compare patient-reported outcome measures (PROMs) and minimum clinically important difference (MCID) achievement following anterior or transforaminal lumbar interbody fusion for isthmic spondylolisthesis in patients presenting with predominant back pain versus predominant leg pain symptoms.

Methods: A single-surgeon database was reviewed for anterior or transforaminal lumbar interbody fusion procedures for isthmic spondylolisthesis. Patient demographics, perioperative characteristics, postoperative complications, and PROMs were collected.

View Article and Find Full Text PDF