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Robert Theodore Tisherman

Robert Theodore Tisherman

Assistant Professor in Orthopaedic Surgery
Orthopaedic Surgery

Selected Publications

Measurement of Supraspinatus Tear Size Using Previously Acquired Ultrasound Images Obtained by Multiple Examiners

Journal Article Australasian Journal of Ultrasound in Medicine · February 1, 2026 Introduction/Purpose: One examiner might not be able to acquire and interpret every image when examining rotator cuff tears in large cohort studies due to logistical issues. The aim of this study was to determine the repeatability of supraspinatus tear siz ... Full text Cite

Resource Utilization and Throughput in Pediatric Abdominal Pain among Attendings, Residents, and Advanced Practice Clinicians.

Journal Article West J Emerg Med · November 18, 2025 INTRODUCTION: Our goal was to assess the impact of emergency department (ED) clinician category on length of stay (LOS) and resource utilization in children presenting with abdominal pain. METHODS: We conducted a retrospective chart review of all subjects ... Full text Link to item Cite

Overuse Injuries in School Athletes

Chapter · January 1, 2025 Overuse injuries are common in school-age and college athletes. This population is at particular risk for overuse as one-sport specialization has become more common and over-training frequently occurs. Overuse injuries are often insidious in onset, progres ... Full text Cite

Comparison of Revision and Redislocation Rates After First-Time Anterior Shoulder Instability Between Subluxators and Dislocators: A Midterm Outcome Study.

Journal Article Orthop J Sports Med · December 2024 BACKGROUND: Anterior shoulder instability is a common pathology seen especially in young men and highly active patient populations. Subluxation is a commonly encountered clinical issue, yet little is known about the effects of first-time subluxation compar ... Full text Link to item Cite

Conflict of Interest Disclosure in American Arthroplasty Surgical Literature.

Journal Article Arthroplast Today · December 2024 BACKGROUND: Relationships between industry and physicians are critical for innovation in the field of arthroplasty surgery. However, these relationships can present a conflict of interest (COI) for medical research and are required to be disclosed by most ... Full text Link to item Cite

Arthroscopic Bone Block Stabilization for Anterior Shoulder Instability with Subcritical Glenohumeral Bone Loss.

Journal Article Curr Rev Musculoskelet Med · November 2024 PURPOSE OF REVIEW: The management options for anterior shoulder instability with minimal bone loss or with critical bone loss are well established. However, there is less clear evidence to guide management for patients with subcritical bone loss, the spect ... Full text Link to item Cite

Glenohumeral capsular injury rate in patients with glenohumeral instability: a systematic review and meta-analysis.

Journal Article JSES Rev Rep Tech · November 2024 BACKGROUND: Glenohumeral instability is a complex clinical problem with underlying pathology in the bony, labral, and capsular tissues. The rate of specific capsular injuries varies widely in the literature and the clinical importance of these specific inj ... Full text Link to item Cite

Bioaugmentation demonstrates similar outcomes and failure rates for arthroscopic revision rotator cuff repair compared to revision without bioaugmentation.

Journal Article JSES Int · September 2024 BACKGROUND: Arthroscopic revision rotator cuff repairs (RCRs) exhibit lower healing rates and inferior outcomes compared to primary repairs. There is limited evidence regarding the use of bioaugmentation in the setting of revision RCRs. Autologous conditio ... Full text Link to item Cite

Association Between Industry Sponsorship of Spine-Related Clinical Trials, Publication Status, and Research Outcomes

Journal Article Global Spine Journal · September 1, 2024 Study Design: Observational Database Study. Objectives: Prospective clinical trials in spinal surgery are expensive to conduct, especially when randomized, appropriately powered, and/or multicentered. Industry collaborations generate symbiotic relationship ... Full text Cite

There is high variability in quantitative measurement techniques in glenohumeral capsular measurements for shoulder instability: A systematic review.

Journal Article Knee Surg Sports Traumatol Arthrosc · August 2024 PURPOSE: Instability of the glenohumeral joint remains a complex clinical issue with high rates of surgical failure and significant morbidity. Advances in specific radiologic measurements involving the glenoid and the humerus have provided insight into gle ... Full text Link to item Cite

Overhead athletes have comparable intraoperative injury patterns and clinical outcomes to non-overhead athletes following surgical stabilization for first-time anterior shoulder instability at average 6-year follow-up.

Journal Article J Shoulder Elbow Surg · June 2024 BACKGROUND AND HYPOTHESIS: Anterior shoulder instability is a common problem affecting young, athletic populations that results in potential career-altering functional limitations. However, little is known regarding the differences in clinical outcomes aft ... Full text Link to item Cite

Reasons and Risk Factors for Failed Same-Day Discharge After Total Joint Arthroplasty.

Journal Article J Arthroplasty · June 2024 BACKGROUND: A shift toward same-day discharge (SDD) in primary elective total knee arthroplasty (TKA) and total hip arthroplasty (THA) has created a need to optimize patient selection and improve same-day recovery pathways. The objectives of this study wer ... Full text Link to item Cite

Revision Anterior Cruciate Ligament Reconstruction

Chapter · January 1, 2024 There are significant technical differences between primary and revision anterior cruciate ligament (ACL) reconstruction which result in revision ACL reconstruction being a far more demanding procedure with increased risk for failure and the need for addit ... Full text Cite

Patient Characteristics Associated with Hospital Admission or Antiarrhythmic Medication Changes After Emergency Department Evaluation of Supraventricular Tachycardia.

Journal Article Pediatr Cardiol · December 2023 BACKGROUND: Supraventricular tachycardia (SVT) is a relatively frequent diagnosis in the pediatric emergency department (ED). However, there are no consensus guidelines for ED disposition, and there are limited data on ED outcomes. Better understanding of ... Full text Link to item Cite

The lateral meniscus extrudes with and without root tear evaluated using ultrasound.

Journal Article J ISAKOS · December 2022 PURPOSE: The purpose of the current study was to measure extrusion of the intact lateral meniscus as a function of knee flexion angle and loading condition and to compare the changes in extrusion with a posterior root tear using a robotic testing system an ... Full text Link to item Cite

Open Ischiofemoral Impingement Decompression.

Journal Article Arthrosc Tech · July 2022 Ischiofemoral impingement is a relatively rare cause of posterior hip pain associated with narrowing of the space between the lateral aspect of the ischium and the lesser trochanter. Symptoms typically consist of lower buttock, groin, and/or medial thigh p ... Full text Link to item Cite

Thread Delamination in 4.5 mm AO Cannulated Screws: A Small Case Series in the Pediatric Trauma Population.

Journal Article J Pediatr Orthop · March 1, 2022 BACKGROUND: Thread delamination associated with cannulated screws have been reported but likely represent an under-recognized complication in the orthopaedic literature. The purpose of this study is to report the occurrence of repeated hardware failures th ... Full text Link to item Cite

Conflict of interest disclosure in orthopaedic and general surgical trauma literature.

Journal Article Injury · August 2021 SIGNIFICANCE: Financial relationships between industry and physicians are a key aspect for the advancement of surgical practice and training, but these relationships also result in a conflict of interest with respect to research. Financial payments to phys ... Full text Link to item Cite

Under Disclosure of Conflicts of Interest Is Less Frequent in Senior Authors: A Cross-sectional Review of All Authors Submitting to JAAOS Between 2014 and 2018.

Journal Article J Am Acad Orthop Surg · June 1, 2021 The interactions between physicians and industry are necessary for advancement of clinical practice and improvement in medical devices. Physician-industry relationships also introduces financial conflicts of interest into research publications. Payments to ... Full text Link to item Cite

Meniscal problems in the ACL deficient knee: What every ACL surgeon must be able to do!

Journal Article Operative Techniques in Sports Medicine · June 1, 2021 Meniscal tears are common concomitant injuries seen in up to 65% of anterior cruciate ligament (ACL) deficient knees. The goal of ACL reconstruction (ACL-R) is to restore mechanical stability to the knee and to prevent further damage to the menisci, which ... Full text Cite

Association of Bacteremia with Vaccination Status in Children Aged 2 to 36 Months.

Journal Article J Pediatr · May 2021 OBJECTIVE: To determine the association between bacteremia and vaccination status in children aged 2-36 months presenting to a pediatric emergency department. STUDY DESIGN: Retrospective cohort study of children aged 2-36 months with blood cultures obtaine ... Full text Link to item Cite

Distal locking of short cephalomedullary nails decreases varus collapse in unstable intertrochanteric fractures - a biomechanical analysis.

Journal Article Injury · March 2021 INTRODUCTION: Peritrochanteric fractures are a growing problem and complications relating to operative fixation of these fracture, including varus collapse and screw cutout, are common in elderly osteoporotic patients. We hypothesize that unlocked nails wi ... Full text Link to item Cite

Continuous-Loop Tape Technique Has Greater Stiffness and Less Elongation Compared With Tied-Suture Fixation of Full-Thickness All–Soft Tissue Quadriceps Tendon Autografts

Journal Article Orthopaedic Journal of Sports Medicine · January 1, 2021 Background: Many graft fixation techniques are utilized for full-thickness soft tissue quadriceps tendon autografts during anterior cruciate ligament reconstruction (ACLR). Purpose: To determine the tensile properties of all–soft tissue quadriceps tendon g ... Full text Cite

Augmentation of Anatomic Anterior Cruciate Ligament Reconstruction With Lateral Extra-articular Tenodesis Does Not Significantly Affect Rotatory Knee Laxity: A Time Zero, In Vivo Kinematic Analysis.

Journal Article Am J Sports Med · December 2020 BACKGROUND: The pivot-shift test is used to assess for rotatory knee laxity in the anterior cruciate ligament (ACL)-deficient knee and ACL-reconstructed knee; however, the pivot shift uses a subjective grading system that is limited by variability between ... Full text Link to item Cite

Mobile application for quantification of the pivot shift examination: Intraoperative usability and utility during real-world deployment

Journal Article Journal of Isakos · November 1, 2020 Objective The objective of the current study was to evaluate the utility and ease of use of a novel non-invasive tablet-based application for quantification of the pivot shift (QPS) in a multicentre setting. Methods Nine senior orthopaedic surgeons were re ... Full text Cite

Undisclosed Conflict of Interest Is Prevalent in Spine Literature.

Journal Article Spine (Phila Pa 1976) · November 1, 2020 STUDY DESIGN: Cohort study. OBJECTIVE: The aim of this study was to determine the rate of accurate conflict of interest (COI) disclosure within three prominent subspecialty Spine journals during a 4-year period. SUMMARY OF BACKGROUND DATA: Industry-physici ... Full text Link to item Cite

Quadriceps tendon anterior cruciate ligament reconstruction.

Journal Article Knee Surg Sports Traumatol Arthrosc · August 2020 Quadriceps tendon is a promising alternative graft option for anterior cruciate ligament (ACL) reconstruction, which can be harvested with or without a bone block as well as a full or partial thickness graft. Therefore, quadriceps tendon graft could be use ... Full text Link to item Cite

Anterior Cruciate Ligament Reconstruction With a Partial-Thickness Quadriceps Tendon Graft Secured With a Continuous-Loop Fixation Device

Journal Article Arthroscopy Techniques · May 1, 2020 Anterior cruciate ligament reconstruction using quadriceps tendon (QT) autograft has recently gained popularity because newer techniques allow harvest of a robust graft with little soft-tissue dissection or donor-site morbidity. The QT graft can provide a ... Full text Cite

Biomechanical contribution of the alar ligaments to upper cervical stability.

Journal Article J Biomech · January 23, 2020 Acute and chronic whiplash-associated disorders pose a significant healthcare burden due to chronic pain, which is associated with upper cervical instability resulting from ligamentous injury. No standard measure exists for diagnosing alar ligament injury ... Full text Link to item Cite

American Football

Chapter · January 1, 2020 American football is the most popular collision sport in the USA and has increasing international participation. High-energy impacts and fast-paced play are inherent to all levels of participations from youth to professional football and result in injuries ... Full text Cite

Anterior Cruciate Ligament Injury and the Anterolateral Complex of the Knee—Importance in Rotatory Knee Instability?

Journal Article Current Reviews in Musculoskeletal Medicine · December 1, 2019 Purpose of Review: In the setting of rotatory knee instability following anterior cruciate ligament (ACL) reconstruction, there has been a resurgence of interest in knee’s anterolateral complex (ALC). Reconstruction or augmentation of the ALC with procedur ... Full text Cite

Allograft for knee ligament surgery: an American perspective.

Journal Article Knee Surg Sports Traumatol Arthrosc · June 2019 PURPOSE: Allografts are frequently use for ligamentous reconstruction at the knee. In the United States, tissue donation and distribution are highly regulated processes with thorough oversight from private and government entities. Allograft is widely avail ... Full text Link to item Cite

Instability following ACL rupture: What do we need to restore during reconstruction

Journal Article Deutsche Zeitschrift Fur Sportmedizin · February 1, 2019 ACL injury involves sagittal plane and rotatory instability; with its reconstruction aimed at restoring this instability. There remains room for improvement in long-term clinical outcomes and preventing recurrent instability. Therefore, it is important to ... Full text Cite

Biomechanical contributions of upper cervical ligamentous structures in Type II odontoid fractures.

Journal Article J Biomech · January 23, 2019 Fractures of the odontoid present frequently in spinal trauma, and Type II odontoid fractures, occurring at the junction of the odontoid process and C2 vertebrae, represent the bulk of all traumatic odontoid fractures. It is currently unclear what soft-tis ... Full text Link to item Cite

Biomechanical Analysis of a Growing Rod with Sliding Pedicle Screw System for Early-Onset Scoliosis.

Journal Article J Healthc Eng · 2019 Early-onset scoliosis (EOS) remains a challenging condition for which current nonfusion surgeries require iterative lengthening surgeries. A growing rod with sliding pedicle screw system (GRSPSS) was developed to treat spinal deformities without repeated o ... Full text Link to item Cite

Novel use of telescoping growth rods in treatment of early onset scoliosis: An in vivo and in vitro study in a porcine model

Journal Article Jor Spine · December 1, 2018 Introduction: Treatment of early-onset scoliosis (EOS) can be difficult. Various forms of growing rods exist to correct deformity while delaying definitive spinal fusion. The disadvantage of traditional growing rods is need for repeated surgical lengthenin ... Full text Cite

Age-dependent changes in intervertebral disc cell mitochondria and bioenergetics.

Journal Article Eur Cell Mater · October 18, 2018 Robust cellular bioenergetics is vital in the energy-demanding process of maintaining matrix homeostasis in the intervertebral disc. Age-related decline in disc cellular bioenergetics is hypothesised to contribute to the matrix homeostatic perturbation obs ... Full text Link to item Cite

Systematic review of spica casting for the treatment of paediatric diaphyseal femur fractures

Journal Article Journal of Children S Orthopaedics · April 1, 2018 Purpose Paediatric femur fractures are commonly encountered and often successfully managed with spica casting. Despite spica casting’s long history there is little formal guidance for optimal outcomes and no consolidation of existing literature. The purpos ... Full text Cite

Mechanical role of the posterior column components in the cervical spine.

Journal Article Eur Spine J · July 2016 PURPOSE: To quantify the mechanical role of posterior column components in human cervical spine segments. METHODS: Twelve C6-7 segments were subjected to resection of (1) suprasinous/interspinous ligaments (SSL/ISL), (2) ligamenta flavum (LF), (3) facet ca ... Full text Link to item Cite

NF-κB Signaling Pathway in Controlling Intervertebral Disk Cell Response to Inflammatory and Mechanical Stressors.

Journal Article Phys Ther · May 2016 BACKGROUND: Intervertebral disk degeneration (IDD) has a greater than 90% lifetime incidence and is one of the leading causes of chronic back pain in the United States. Despite the high societal cost of IDD, there is limited understanding of the biological ... Full text Link to item Cite

Alpha-actinin-4 and CLP36 protein deficiencies contribute to podocyte defects in multiple human glomerulopathies.

Journal Article J Biol Chem · September 2, 2011 Genetic alterations of α-actinin-4 can cause podocyte injury through multiple mechanisms. Although a mechanism involving gain-of-α-actinin-4 function was well described and is responsible for a dominantly inherited form of human focal segmental glomerulosc ... Full text Link to item Cite