Patrick E. Greis

ORCID: 0000-0003-0686-4814
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About
Contact & Profiles
Research Areas
  • Shoulder Injury and Treatment
  • Knee injuries and reconstruction techniques
  • Shoulder and Clavicle Injuries
  • Sports injuries and prevention
  • Total Knee Arthroplasty Outcomes
  • Orthopedic Surgery and Rehabilitation
  • Nerve Injury and Rehabilitation
  • Lower Extremity Biomechanics and Pathologies
  • Musculoskeletal pain and rehabilitation
  • Anesthesia and Pain Management
  • Adhesion, Friction, and Surface Interactions
  • Hip disorders and treatments
  • Tendon Structure and Treatment
  • Nausea and vomiting management
  • Peripheral Nerve Disorders
  • Foot and Ankle Surgery
  • Trauma Management and Diagnosis
  • Elbow and Forearm Trauma Treatment
  • Bone fractures and treatments
  • Orthopaedic implants and arthroplasty
  • Cardiovascular Syncope and Autonomic Disorders
  • Cardiac Arrhythmias and Treatments
  • Sports Performance and Training
  • Cardiac Valve Diseases and Treatments
  • Osteoarthritis Treatment and Mechanisms

University of Utah
2012-2025

Orthopaedic Center
2009-2019

Emory University
2017

University of Utah Hospital
2006

University of Cincinnati
2003

Kingston General Hospital
2003

Weatherford College
2002

University of Pittsburgh
1990-1997

Steadman Clinic
1995-1996

University of Colorado Boulder
1996

Background Double-row arthroscopic rotator cuff repair has become more popular, and some studies have shown better footprint coverage improved biomechanics of the repair. Hypothesis leads to superior integrity early clinical results compared with single-row Study Design Randomized controlled trial; Level evidence, 1. Methods Forty patients were randomized either or double-row at time surgical intervention. Patients followed measures (UCLA, Constant, WORC, SANE, ASES, as well range motion,...

10.1177/0363546508328115 article EN The American Journal of Sports Medicine 2009-02-09

In Brief BACKGROUND: Continuous peripheral nerve block (CPNB) is an optimal choice for analgesia after orthopedic procedures, but not commonly used in outpatients because of concern regarding the possibility catheter-related complications. addition, it may be difficult to provide adequate patient access physicians this setting. We present 620 who were treated with CPNB using established protocol. METHODS: All catheters placed direct ultrasound visualization. These patients received extensive...

10.1213/01.ane.0000243393.87912.9c article EN Anesthesia & Analgesia 2006-11-18

A mismatch of the original lateral meniscus and a allograft by inaccurate preoperative radiographic sizing can have significant consequences on ultimate function.The size meniscal affects contact mechanics femoral condyle tibial plateau.Controlled laboratory study.Four right 2 left knees were tested as intact joints, after meniscectomy, replantation with menisci 16 or 9 human, fresh-frozen allografts, respectively. The allografts allocated into 7 groups according to their outer inner...

10.1177/0363546506291404 article EN The American Journal of Sports Medicine 2006-08-22

Overtensioning of medial patellofemoral ligament reconstructions may lead to adverse surgical outcomes.Increasing tension on a graft will increase contact forces and decrease lateral patellar translation.Controlled laboratory study.Patellofemoral pressures were measured in 8 fresh-frozen cadaveric knees before after transection the standardized reconstruction surgery. Contact at 3 knee angles (30 degrees , 60 90 ) under levels applied (2, 10, 40 N). For each condition, translation was 30...

10.1177/0363546507300872 article EN The American Journal of Sports Medicine 2007-04-14

Increased age, larger tear size, and more advanced fatty degeneration of the rotator cuff musculature have been correlated with poorer healing rates after repair. Platelets are an endogenous source growth factors present during healing.Augmentation repairs platelet-rich fibrin matrix (PRFM) may improve biology thus functional outcome scores retear repair.Cohort study; Level evidence, 3.Rotator tears at risk for were prospectively identified using algorithm; points assigned age (50-59 years =...

10.1177/0363546511424402 article EN The American Journal of Sports Medicine 2011-10-20

The authors previously reported that focused eccentric resistance training during the first 15 weeks following anterior cruciate ligament reconstruction (ACL-R) induced greater short-term increases in muscle volume, strength, and measures of function relative to standard rehabilitation. purpose this study was evaluate effects early progressive exercise on volume at 1 year after ACL-R.Forty patients who had undergone an ACL-R were randomly assigned 2 groups: a group received (n=20)...

10.2522/ptj.20070189 article EN Physical Therapy 2008-11-06

Background Septic arthritis after arthroscopic anterior cruciate ligament reconstruction is rare, and the most appropriate treatment unclear. Current recommendations are that, if graft removed, reimplantation should be delayed for 6 to 9 months. Hypothesis Early removal of with infection management followed by early can lead good results. Study Design Uncontrolled retrospective review. Methods Records all patients who developed postoperative were reviewed. Four had including weeks...

10.1177/03635465030310031501 article EN The American Journal of Sports Medicine 2003-03-01

Using a dog model, we examined the influence of tendon length and fit within bone tunnel on pull-out strength tendon-bone complex at 6 weeks after fixation. Fourteen adult mongrel dogs (weight, 25 to 30 kg) underwent bilateral hindlimb surgery in which extensor digitorum longus was transplanted into an extraarticular metaphyseal tunnel. Our findings demonstrated that enhanced by increasing The average load failure with 1 cm 153.7 78.6 N, compared 265.5 93.3 N for specimens 2 Tendon also...

10.1177/03635465010290041901 article EN The American Journal of Sports Medicine 2001-07-01

Background: Thigh muscle atrophy is a major impairment that occurs early after reconstruction of the anterior cruciate ligament and persists for several years. Eccentric resistance training has potential to induce considerable gains in size strength could prove beneficial during postoperative rehabilitation. The purpose this study was evaluate effects progressive eccentric exercise on thigh structure following ligament. Methods: Beginning three weeks ligament, forty patients were randomly...

10.2106/jbjs.f.00385 article EN Journal of Bone and Joint Surgery 2007-03-01

In many areas of orthopaedics, patients with greater levels psychological distress report inferior self-assessments pain and function. This effect can lead to lower-than-expected baseline scores on common patient-reported outcome scales, even those not traditionally considered have a component.This study attempts answer the following questions: (1) Are higher associated clinically important differences in VAS for pain, Simple Shoulder Test, American Elbow Surgeons score undergoing...

10.1007/s11999-014-3833-1 article EN Clinical Orthopaedics and Related Research 2014-07-30

Study Design Randomized, matched design. Background Optimal rehabilitation following anterior cruciate ligament reconstruction (ACL-R) requires safe and effective interventions. Negative work exercise (via eccentric muscle activity) has the potential to be highly at producing large quadriceps size strength gains early after ACL-R. The purpose of this investigation was evaluate short-term safety efficacy adding a progressive negative program via (ECC) ergometry Methods Measures Beginning 3...

10.2519/jospt.2007.2362 article EN Journal of Orthopaedic and Sports Physical Therapy 2007-01-01

We used electromyographic analysis to determine the muscle activity of shoulder muscles during lift-off test and resisted internal rotation. The in upper lower subscapularis a from region midlumbar spine was approximately 70% maximal voluntary contraction. This level significantly higher than for all other tested ( P < 0.05). with hand placed resulted one-third more ac tivity when modified performed at but tocks region. A activities muscles, only small increase pectoralis major muscle....

10.1177/036354659602400505 article EN The American Journal of Sports Medicine 1996-09-01

The long-term effect of hamstring tendon harvest for anterior cruciate ligament (ACL) reconstruction on muscle morphology is not well documented. Our hypothesis was that the tendons ACL would result in persistent loss volume and cross-sectional area gracilis semitendinosus muscles.Magnetic resonance images were made both limbs ten patients nine to eleven years after they had with ipsilateral autograft. individual thigh muscles bilaterally calculated. peak 7 cm proximal joint line measured...

10.2106/jbjs.k.00692 article EN Journal of Bone and Joint Surgery 2012-07-18

Temporal Evolution of MRI Findings After Arthroscopic Rotator Cuff RepairJulia Crim1 2, Robert Burks2, Betty J. Manaster1, Christopher Hanrahan1, Man Hung2 and Patrick Greis2Audio Available | Share

10.2214/ajr.10.4436 article EN American Journal of Roentgenology 2010-11-22
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