Research Topics
| Gerald R WilliamsSummaryAffiliation: University of Pennsylvania Country: USA Publications
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Publications
Total shoulder arthroplasty: glenoid component designGerald R Williams
Department of Orthopaedic Surgery, University of Pennsylvania School of Medicine, 39th and Market Streets, 1 Cupp Pavilion, Presbyterian Medical Center, Philadelphia, PA 19104, USA
J Shoulder Elbow Surg 14:122S-128S. 2005....- Management of periprosthetic fractures: the shoulderGerald R Williams
Shoulder and Elbow Service, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
J Arthroplasty 17:14-6. 2002..During insertion, attempts are made to achieve a tight, line-line fit. Consequently the risk for periprosthetic fracture may be higher than estimated... - Rotator cuff tears: why do we repair them?Gerald R Williams
Presbyterian Hospital, 39th and Market Streets, 1 Cupp Pavilion, Philadelphia, PA 19104, USA
J Bone Joint Surg Am 86:2764-76. 2004 - Exercise following a short immobilization period is detrimental to tendon properties and joint mechanics in a rat rotator cuff injury modelCathryn D Peltz
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, 36th and Hamilton Walk, Philadelphia, Pennsylvania 19104, USA
J Orthop Res 28:841-5. 2010..Therefore, we conclude that after a short period of immobilization, increased activity is detrimental to both tendon mechanical properties and shoulder joint mechanics, presumably due to increased scar production... - Latissimus dorsi tendon transfer for irreparable posterosuperior rotator cuff tears. Surgical techniqueMichael J Codsi
University of Pennsylvania School of Medicine, Presbyterian Hospital, Philadelphia, Pennsylvania, USA
J Bone Joint Surg Am 89:1-9. 2007.... - The effect of postoperative passive motion on rotator cuff healing in a rat modelCathryn D Peltz
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, 36th and Hamilton Walk, Philadelphia, PA 19104, USA
J Bone Joint Surg Am 91:2421-9. 2009.... - Arthroscopic treatment of internal rotation contracture and glenohumeral dysplasia in children with brachial plexus birth palsyScott H Kozin
Department of Orthopaedic Surgery, Temple University and Hand Surgeon, Shriners Hospital for Children, Philadelphia, PA 19140, USA
J Shoulder Elbow Surg 19:102-10. 2010..The purpose of the study was to assess the ability of arthroscopic anterior release, +/- tendon transfers to maintain shoulder joint alignment in children with brachial plexus palsy, and to assess their outcome after arthroscopic reduction... - Outcomes after percutaneous reduction and fixation of proximal humeral fracturesJay D Keener
Department of Orthopaedic Surgery, Washington University Barnes Jewish Hospital, St Louis, MO 63110, USA
J Shoulder Elbow Surg 16:330-8. 2007..Percutaneous treatment of selected proximal humeral fractures results in predictable union and good clinical results with a low rate of complications... - Loss of passive external rotation at 90 degrees abduction is predictive of a medially healed Bankart lesionAllen Deutsch
Department of Orthopaedic Surgery, Baylor College of Medicine, Kelsey Seybold Clinic, Houston, Texas 77025, USA
Arthroscopy 22:710-5. 2006..This prospective study correlates passive range of external rotation with arthroscopic findings in patients with anterior instability for the purpose of defining criteria that can be used to detect a medially healed Bankart lesion... - Total shoulder arthroplasty in older patients: increased perioperative morbidity?Eric T Ricchetti
Department of Orthopaedic Surgery, Thomas Jefferson University Hospital, Rothman Institute, 925 Chestnut Street, 5th Floor, Philadelphia, PA 19107, USA
Clin Orthop Relat Res 469:1042-9. 2011..Controversy still exists, however, regarding the perioperative morbidity of total joint arthroplasty in elderly patients, particularly those 80 years of age and older... - Treatment of glenohumeral subluxation using electrothermal capsulorrhaphyKirk L Wong
Department of Orthopaedic Surgery, The Hospitals of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
Arthroscopy 21:985-91. 2005..LEVEL OF EVIDENCE: Level IV, case series without controls... - The role of repair tension on tendon to bone healing in an animal model of chronic rotator cuff tearsJonathan A Gimbel
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, Philadelphia, PA 19104 6081, USA
J Biomech 40:561-8. 2007..Future studies will include additional animal model studies involving the relationship between tension and muscle properties and a clinical study investigating the role of repair tension on repair failure... - After rotator cuff repair, stiffness--but not the loss in range of motion--increased transiently for immobilized shoulders in a rat modelJoseph J Sarver
McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
J Shoulder Elbow Surg 17:108S-113S. 2008.... - Supraspinatus tendon organizational and mechanical properties in a chronic rotator cuff tear animal modelJonathan A Gimbel
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, 36th and Hamilton Walk, Philadelphia, PA 19104-6081, USA
J Biomech 37:739-49. 2004..Based on similarities in histology and mechanical properties to rotator cuff tears in humans, the animal model presented here is promising for future investigations of the tendon's natural injury response in the absence of repair... - Alternative bearing surfaces--do we need them?Gerald R Williams
The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
Am J Orthop (Belle Mead NJ) 36:15-7. 2007..In this article, we describe briefly the biological mechanisms responsible for aseptic glenoid loosening, review current alternative bearing surfaces, and provide data supporting use of these surfaces for glenoid components... - Agreement study of radiographic classification of rotator cuff tear arthropathyJoseph P Iannotti
Department of Orthopaedic Surgery, Orthopaedic and Rheumatologic Institute Cleveland Clinic, Cleveland, OH 44195, USA
J Shoulder Elbow Surg 19:1243-9. 2010..We hypothesized that specific radiographic criteria and clinical criteria would be most important and consistently used among experienced shoulder surgeons when determining the best surgical option for a particular patient... - Arthroscopic versus mini-open rotator cuff repair: a comparison of clinical outcomeAndreas M Sauerbrey
Shoulder and Elbow Service, University of Pennsylvania, Philadelphia, Pennsylvania, USA
Arthroscopy 21:1415-20. 2005..LEVEL OF EVIDENCE: Level III, retrospective comparative study... - Temporal expression of 8 growth factors in tendon-to-bone healing in a rat supraspinatus modelCarola C Würgler Hauri
McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA 19104 6081, USA
J Shoulder Elbow Surg 16:S198-203. 2007..Future studies will investigate the different impacts of growth factor expression in tendon to bone healing... - Polyethylene dissociation after reverse total shoulder arthroplasty: the use of diagnostic arthroscopyMatthew J Garberina
University of Pennsylvania and Penn Presbyterian Medical Center, Philadelphia, PA, USA
J Shoulder Elbow Surg 17:e16-8. 2008 - Neer Award 2005: Peripheral nerve function during shoulder arthroplasty using intraoperative nerve monitoringSameer H Nagda
Division of Orthopaedic Surgery, University of Pennsylvania School of Medicine, Philadelphia, USA
J Shoulder Elbow Surg 16:S2-8. 2007..This patient population may also be considered for routine nerve monitoring... - Variation in neck-shaft angle: influence in prosthetic designJoseph P Iannotti
Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio, USA
Am J Orthop (Belle Mead NJ) 36:9-14. 2007..In this article, we review some principles of prosthetic design and surgical technique to anatomically reconstruct the humeral head. We also review the clinical consequences of prosthetic humeral head malpositioning... - Options for glenoid bone loss: composites of prosthetics and biologicsGerald R Williams
Department of Orthopaedic Surgery, Thomas Jefferson University, and Rothman Institute at Jefferson, Philadelphia, PA 19107, USA
J Shoulder Elbow Surg 16:S267-72. 2007..These changes may result in mass-produced glenoid components that could make management of glenoid bone loss more reproducible... - Surgical treatment of os acromiale with and without associated rotator cuff tearsJoseph A Abboud
Department of Orthopaedic Surgery, University of Pennsylvania School of Medicine, Presbyterian Hospital, Philadelphia, PA 19107, USA
J Shoulder Elbow Surg 15:265-70. 2006..When we analyzed our results to exclude workers' compensation patients, 80% achieved satisfactory results (compared with only 22% in our workers' compensation group)... - Arthroscopy effectively treats ganglion cysts of the shoulderJoseph A Abboud
University of Pennsylvania School of Medicine, Presbyterian Hospital, Philadelphia, Pennsylvania, USA
Clin Orthop Relat Res 444:129-33. 2006..Level of Evidence: Therapeutic study, Level III (retrospective cohort study). See the Guidelines for Authors for a complete description of levels of evidence... - Is reverse shoulder arthroplasty a reasonable alternative for revision arthroplasty?Luke Austin
The Rothman Institute of Orthopaedics at Thomas Jefferson University Hospital, 925 Chestnut Street, 5th Floor, Philadelphia, PA 19107, USA
Clin Orthop Relat Res 469:2531-7. 2011..However, we presume patient function would vary if performed primarily or for revision and would vary with other patient-specific factors... - Rat supraspinatus muscle atrophy after tendon detachmentElisabeth R Barton
Department of Anatomy and Cell Biology, School of Dental Medicine, 441A Levy Building, 240 S 40th Street, University of Pennsylvania, Philadelphia, PA 19104, USA
J Orthop Res 23:259-65. 2005..These results suggest that load returned to the muscle via adhesions to surrounding surfaces, which may be sufficient to reverse changes in muscle mass... - Case challenges in shoulder surgery: what would you do?Louis U Bigliani
Shoulder Service, Department of Orthopaedic Surgery, Columbia Presbyterian Medical Center, New York, New York 10032, USA
J Arthroplasty 17:41-4. 2002.... - Arthroscopic and open Bankart repairs provide similar outcomesFotios P Tjoumakaris
University of Pennsylvania School of Medicine, Presbyterian Medical Center, Philadelphia, Pennsylvania 19104, USA
Clin Orthop Relat Res 446:227-32. 2006..Level of Evidence: Therapeutic Study, Level III (retrospective comparative study). See the Guidelines for Authors for a complete description of levels of evidence... - Outcome of open reduction and internal fixation of surgical neck nonunions of the humerusLeesa M Galatz
Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes Jewish Hospital, St Louis, Missouri 63110, USA
J Orthop Trauma 18:63-7. 2004..The purpose of this study was to evaluate the results of open reduction and internal fixation of nonunions of the surgical neck of the humerus... - Nonprosthetic management of proximal humeral fracturesJoseph P Iannotti
Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland Clinic Lerner School of Medicine, Cleveland, Ohio, USA
Instr Course Lect 53:403-16. 2004..A discussion of nonsurgical and surgical treatment options and techniques needed to achieve anatomic reduction and stable fixation is important... - Supraspinatus tendon composition remains altered long after tendon detachmentAtsushi Yokota
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, Philadelphia, PA 19104-6081, USA
J Shoulder Elbow Surg 14:72S-78S. 2005..These alterations were similar to those seen in human studies. As the quality of the tendon is an important factor in repair, these findings may partially explain why chronic tears heal differently than acute tears... - Iliotibial band reconstruction for treatment of glenohumeral instability associated with irreparable capsular deficiencyJoseph P Iannotti
Department of Orthopaedic Surgery, The Cleveland Clinic Foundation, Ohio 44195, USA
J Shoulder Elbow Surg 11:618-23. 2002..The primary objectives of this study are to describe the surgical technique for capsular reconstruction with ITB and to report the clinical results in 7 patients... - Axillary nerve monitoring during arthroscopic shoulder stabilizationAdil N Esmail
Department of Orthopaedic Surgery, Kaiser Permanente, Panorama City, California, USA
Arthroscopy 21:665-71. 2005..The use of intraoperative nerve monitoring altered the heat application technique in 4 of 11 patients and may have prevented nerve injury. LEVEL OF EVIDENCE: Level II, prospective cohort study... - Evaluation and management of valgus impacted four-part proximal humerus fracturesMichael J Defranco
Department of Orthopaedic Surgery, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA
Clin Orthop Relat Res 442:109-14. 2006..Level of Evidence: Therapeutic study, level V (expert opinion). See Guidelines for Authors for a complete description of levels of evidence... - Magnetic resonance imaging analysis of coracoid morphology and its relation to rotator cuff tearsVirak Tan
Department of Orthopaedic Surgery, University of Medicine and Dentistry of New Jersey, New Jersey School, Newark, USA
Am J Orthop 31:329-33. 2002..The role of coracoid anatomy in the development of lesions of the subscapularis tendon and the long head of the biceps remains to be defined... - Clavicle fracture with thoracic penetration and hemopneumothorax but without neurovascular compromiseFotios P Tjoumakaris
Department of Orthopaedic Surgery, The Rothman Institute, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
Orthopedics 34:e692-5. 2011..This case highlights the importance of a comprehensive physical examination and inspection of all radiographs so that associated injuries are not missed... - Sonography of the coracohumeral interval: a potential technique for diagnosing coracoid impingementMichael R Tracy
Department of Orthopedics, Thomas Jefferson University and Hospitals, Philadelphia, Pennsylvania, USA
J Ultrasound Med 29:337-41. 2010..We used sonography to compare the coracohumeral interval (CHI) in asymptomatic volunteers with the CHI in patients with coracoid impingement... - Acromioclavicular and sternoclavicular injuries and clavicular, glenoid, and scapular fracturesMichael S Bahk
The Rothman Institute, Jefferson Medical College, Philadelphia, Pennsylvania, USA
Instr Course Lect 59:209-26. 2010.... - Prevalence and projections of total shoulder and elbow arthroplasty in the United States to 2015Judd S Day
Biomechanics Practice, Exponent Inc, Philadelphia, PA 19104, USA
J Shoulder Elbow Surg 19:1115-20. 2010.... - Arthroscopic treatment of posterior glenohumeral joint subluxation resulting from brachial plexus birth palsyDavid I Pedowitz
Department of Orthopaedic Surgery, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
J Shoulder Elbow Surg 16:6-13. 2007..Arthroscopic capsular release and subscapularis tenotomy were successful in obtaining reduction of glenohumeral joint subluxation in all patients. The maintenance of reduction requires continued follow-up over time... - Non-prosthetic management of grade IV osteochondral lesions of the glenohumeral jointBrian D Cameron
Penn Orthopaedic Institute, Philadelphia, PA, USA
J Shoulder Elbow Surg 11:25-32. 2002..Arthroscopic capsular release can be added in patients with a loss of passive arcs of shoulder motion. Osteochondral lesions greater than 2 cm(2) appear to be associated with return of pain and failure of this procedure... - Latissimus dorsi tendon transfer for irreparable posterosuperior rotator cuff tears. Factors affecting outcomeJoseph P Iannotti
University of Pennsylvania School of Medicine, Presbyterian Hospital, 39th and Market Streets, Philadelphia, PA 19104, USA
J Bone Joint Surg Am 88:342-8. 2006.... - The Penn shoulder score: reliability and validityBrian G Leggin
University of Pennsylvania Medical Center, Presbyterian, Philadelphia, PA 19104, USA
J Orthop Sports Phys Ther 36:138-51. 2006..Psychometric evaluation of a cross-sectional survey... - Variation of biomechanical, structural, and compositional properties along the tendon to bone insertion siteStavros Thomopoulos
McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, 36th and Hamilton Walk, Philadelphia 19104-6081, USA
J Orthop Res 21:413-9. 2003..Thus, the tendon to bony insertion site varies dramatically along its length in terms of its viscoelastic properties, collagen structure, and extracellular matrix composition... - Clinical results of revision shoulder arthroplasty for glenoid component looseningAllen Deutsch
Department of Orthopaedics, Kelsey Seybold Clinic, Houston, TX, USA
J Shoulder Elbow Surg 16:706-16. 2007..Risk factors associated with a poor outcome after revision arthroplasty included persistent glenohumeral instability, rotator cuff tears, and malunion of the greater tuberosity... - Arthroscopic reduction and fixation with suture-bridge technique for displaced or comminuted greater tuberosity fracturesHyun Seok Song
Department of Orthopedic Surgery, St Paul s Hospital, The Catholic University of Korea, Seoul, Korea
Arthroscopy 24:956-60. 2008..5 mm; Arthrex, Naples, FL) using the suture-bridge technique. The postoperative rehabilitation protocol is similar to that for rotator cuff repairs...
Research Grants
- TENDON TO BONE HEALING--ROLE OF MECHANICAL ENVIRONMENTGerald Williams; Fiscal Year: 2003..Our global hypothesis is that in vivo mechanical factors (exercise vs. cage activity vs. immobilization) will cause a change in the mechanical properties, composition, and organization of the healing insertion site. ..
- Rotator cuff tendon to bone insertion site healingGerald Williams; Fiscal Year: 2006....