Orthopaedic Research

Dr. Kennedy is the Director of the Clinical Research for the Foot and Ankle Department in the Hospital for Special Surgery and has a keen and active interest in Orthopedic Research. He has been an author on over 80 national and international published articles in various peer-reviewed orthopedic and scientific Journals. He has presented his work and his expertise at over 10O conferences and symposiums both nationally and internationally.

His areas of special interest in the field of Orthopedic Research include:

• Osteochondral lesions of the talus
• Arthroscopy of the foot and ankle
• The role of TGF and Hh protein in Cartilage Regeneration
• Genetic Engineering and Biomaterials in Bone Healing and Cartilage Regeneration
• Bone Morphogenetic Protein (BMP) research
• Bone Remodeling and Fracture Healing
• Biomechanics of osteochondral lesions (OCLs)
• Biomechanics of the ankle ligaments

Editorial Appointments

• Reviewer for Clinical Orthopedics and Related Research (CORR)

Dr. Kennedy is also involved in many clinical projects which aim to achieve an accurate impression of the success of various procedures and interventions which he performs in order to improve the efficacy and benefit for the patient.

John G Kennedy- Selected Publications

Publications

• Ankle Instability in Sports. O’Loughlin PF, Murawski CD, Egan CJ, Kennedy JG. Phys Sports Med. 2009 June.
• Current Concepts in the Diagnosis and Treatment of Osteochondral Lesions of the Ankle. O'Loughlin PF, Heyworth BE, Kennedy JG. Am J Sports Med. 2009 Jun 26.
• Fracture of the Medial Tubercle of the Posterior Process of the Talus: Magnetic Resonance Imaging Appearance with Clinical Follow-Up.
  O'Loughlin P, Sofka CM, Kennedy JG.
  HSS J. 2009 Apr 04.
• Iliac hematoma mimicking neoplasm in adolescent athletes.
  Carter T, Flik K, Boland P, Kennedy JG.
  Orthopedics. 2008 Nov; 31(11): 1144.
• Arthroscopic-assisted fluoroscopic navigation for retrograde drilling of a talar osteochondral lesion.
  O'Loughlin PF, Kendoff D, Pearle AD, Kennedy JG.
  Foot Ankle Int. 2009 Jan; 30(1): 70-3.
• Functional outcome after surgical reconstruction of posterior tibial tendon insufficiency in patients under 50 years.
  Tellisi N, Lobo M, O'Malley M, Kennedy JG, Elliott AJ, Deland JT.
  Foot Ankle Int. 2008 Dec; 29(12): 1179-83.
• Evaluation of Hylamer-zirconia hip arthroplasty in patients less than 50 years of age.
  Kennedy JG, O'Loughlin PF, Harty JA, Casey K, Zurakowski D, Quinlan WB.
  Acta Orthop Belg. 2008 Aug; 74(4): 461-71.
• Osteochondral lesion of the fifth metatarsal head in a triathlete.
  O'Loughlin PF, Carter TI, Hodgkins CW, Kennedy JG.
  Ir J Med Sci. 2008 Aug 14.
• Achilles tendon repair: Achillon system vs. Krackow suture: an anatomic in vitro biomechanical study.
  Huffard B, O'Loughlin PF, Wright T, Deland J, Kennedy JG.
  Clin Biomech (Bristol, Avon). 2008 Nov; 23(9): 1158-64.
• Clinical tips: retrograde drilling of talar osteochondral defects.
  Kennedy JG, Suero EM, O'Loughlin PF, Brief A, Bohne WH.
  Foot Ankle Int. 2008 Jun; 29(6): 616-9.
• Pigmented villonodular synovitis about the ankle: two case reports.
  Heller SL, O'Loughlin PF, Di Carlo G, Mintz DN, Kennedy JG.
  Foot Ankle Int. 2008 May; 29(5): 527-33.
• Surgery for retrocalcaneal bursitis: a tendon-splitting versus a lateral approach.
  Anderson JA, Suero E, O'Loughlin PF, Kennedy JG.
  Clin Orthop Relat Res. 2008 Jul; 466(7):1678-82.
• Nerve disorders in dancers.
  Kennedy JG, Baxter DE.
  Clin Sports Med. 2008 Apr, 27(2): 329-34. Review.
• Bunions in dancers.
  Kennedy JG, Collumbier JA.
  Clin Sports Med. 2008 Apr, 27(2): 321-8. Review.
• Forefoot injuries in dancers.
  Prisk VR, O'Loughlin PF, Kennedy JG.
  Clin Sports Med. 2008 Apr; 27(2): 305-20. Review.
• Tendon injuries in dance.
  Hodgkins CW, Kennedy JG, O'Loughlin PF.
  Clin Sports Med. 2008 Apr; 27(2):279-88. Review.
• Ankle sprains and instability in dancers.
  O'Loughlin PF, Hodgkins CW, Kennedy JG.
  Clin Sports Med. 2008 Apr; 27(2):247-62. Review.
• Foot and ankle injuries in dance. Preface.
  Kennedy JG, Hodgkins CW.
  Clin Sports Med. 2008 Apr; 27(2):xi-xii.
• Cycling injuries of the lower extremity.
  Wanich T, Hodgkins C, Columbier JA, Muraski E, Kennedy JG.
  J Am Acad Orthop Surg. 2007 Dec; 15(12):748-56. Review.
• Kennedy JG, Brunner JB, Bohne WH, Hodgkins CW, Baxter DB. Clinical importance of the lateral branch of the deep peroneal nerve. Clin Orthop Relat Res. 2007 Jun;459:222-8.
• Schwab JH. Agarwal P. Boland PJ. Kennedy JG. Healey JH. Patellar complications following distal femoral replacement after bone tumor resection.Journal of Bone & Joint Surgery (A). 88(10):2225-30, 2006 Oct.
• John G Kennedy,Christopher W Hodgkins, Peter Sculco, Timothy Carter, Samuel P. Robinson. Sports injuries of the foot and ankle in the adolescent athlete.ISMJ 7(2), 2006
• Kennedy JG, Deland JT. Resolution of Metatarsalgia following Oblique Osteotomy.Clinical Orthopaedics & Related Research. 453:309-13, 2006 Dec.
• Kennedy JG, Brodsky AR, Gradl G, Bohne WH. Clinical tip: a novel method of cartilage resection from the first metatarsophalangeal joint. Foot Ankle Int.27(6):469-71, 2006
• Elliott AJ, Kennedy JG, O'Malley M. Minimally Invasive Achilles Tendon Repair Using the Achillon Repair System. Techniques Foot Ankle Surg. 5(3):171-174, 2006
• Hodgkins, Christopher W. MD; O'Malley, Martin J. MD; Elliott, Andrew MD; Kennedy, John G. MD. Lesser Metatarsal Osteotomies in Metatarsalgia. Techniques in Foot & Ankle Surgery. 5(2):101-109, June 2006.
• Robinson SP,Hodgkins CW,Sculco P,Kennedy JG.Spring Ligament Reconstruction for Posterior Tibial Tendon Insufficiency: The Y-Tendon Reconstruction Technique. Techniques Foot Ankle Surg. 5(3):198-203, 2006
• Kennedy JG, Hodgkins CW, Brodsky A, Bohne WH. Outcomes after standardized screw fixation technique of ankle arthrodesis. Clin Orthop Relat Res.447:112-8, 2006
• Kennedy JG, Chow FY, Dines J, Gardner M, Bohne WH. Outcomes after interposition arthroplasty for treatment of hallux rigidus.Clin Orthop Relat Res.445:210-5, 2006
• Brodsky AR, Bohne WH, Huffard B, Kennedy JG. An analysis of talar surface area occupied by screw fixation in ankle fusions. Foot Ankle Int. 27(1):53-5, 2006
• Brunner J, Anderson J, O’Malley M,Bohne W, Deland Jt, Kenndy JG.Physician and Patient based outcomes following surgical resection of Haglund’s deformity. Acta Orth Belg 71:718-723, 2005
• Kennedy JG, O’Conner P, Brunner J. Isolated Carpal Scaphoid Dislocation. Acta Orth Belg 72, 2006
• Brodsky AR, O'Malley MJ, Bohne WH, Deland JA, Kennedy JG.An analysis of outcome measures following the Brostrom-Gould procedure for chronic lateral ankle instability. Foot Ankle Int.26(10):816-9, 2005
• El-Abed K, McGuinness A, Brunner J, Dallovedova P, O'Connor P, Kennedy JG. Comparison of outcomes following uncemented hemiarthroplasty and dynamic hip screw in the treatment of displaced subcapital hip fractures in patients aged greater than 70 years. Acta Orthop Belg 71(1): 48-54,2005
• Kennedy JG, Knowles B, Dolan M, et al: Foot and ankle injuries in the adolescent runner. Curr Opin Pediatr 17(1): 34-42,2005
• Harty JA, Quinlan JF, Kennedy JG, et al: Anthropometrical analysis of cervical spine injuries. Injury 35(3): 249-252,2004
• Kennedy JG, Harty JA, Philips MC, et al: Bilateral femoral head osteonecrosis after femoral leg lengthening. Am J Orthop 33(12): 612-614,2004
• Kennedy JG, Donahue JP, Hoang B, et al: Vesicant characteristics of oxaliplatin following antecubital extravasation. Clin Oncol (R Coll Radiol) 15(5): 237-239,2003
• O'Connor P, Kennedy JG, McConaghy D, McCormack O. Lower Limb Dysesthesia An Ominous Sign in Lumbar Fractures. IMJ 96(4): 113-115, 2003
• Kennedy JG, Donahue JR, Aydin H, et al: Metastatic breast carcinoma to bone disguised by osteopoikilosis. Skeletal Radiol 32(4): 240-243,2003
• Kennedy JG, Frelinghuysen P, Hoang BH: Ewing sarcoma: current concepts in diagnosis and treatment. Curr Opin Pediatr 15(1): 53-57,2003
• Kennedy JG, Harty JA, Casey K, et al: Outcome after single technique ankle arthrodesis in patients with rheumatoid arthritis. Clin Orthop Relat Res 412(1): 131-138,2003
• Kennedy JG, Jan WM, McGuinness AJ, et al: An outcomes assessment of intra-articular calcaneal fractures, using patient and physician's assessment profiles. Injury 34(12): 932-936,2003
• Kennedy JG, Kearns SR, Quinlan WB: Dissociation of a Morse-taper stemmed tibial component following revision total knee arthroplasty. A case report. J Bone Joint Surg Am 85-A(3): 536-538,2003
• O'Connor PA, McCormack O, Kennedy JG, et al: Lower limb dysesthesia--an ominous sign in lumbar fractures. Ir Med J 96(4): 113-115,2003
• Aravindan S., Kennedy JG, McGuinness, Taylor TC. Osteogenesis imperfecta patients treated with Sheffield Rod. Orthopedics Today 23(11):50, 2003
• Kennedy JG, Frelinghuysen P, Hoang BH. Ewing sarcoma: current concepts in diagnosis and treatment. Curr Opin Pediatr. 15(1):53-7, 2003
• O'Connor PA, Yeap S, Noel J, Khayyat G, Kennedy JG, Arivindan S, McGuinness AJ.Lisfranc injuries:patient- and physician-based functional outcomes. Int Orthop 27(2):98-102,2003
• Jan WM, Kennedy JG, Dowling FE, et al: Bilateral wrist dislocation in trisomy 21: a case report. J Pediatr Orthop B 10(4): 349-351,2001
• Kennedy JG, Hresko MT, Kasser JR, et al: Osteonecrosis of the femoral head associated with slipped capital femoral epiphysis. J Pediatr Orthop 21(2): 189-193,2001
• Kennedy JG, Millett H, Cauda Equina Syndrome. Contemp Spine Surgery 2(4),2001
• Kennedy JG, Harty JA, Geuverneur M, Salih E, Walsh MG, McManus F,Fitzpatrick J. The role of collagen type IV angiogenic factor in reversing osteonecrosis in a rabbit femoral head model. Irish Journal of Orthopaedic Surgery and Trauma 5(1),2000
• Kennedy JG, El Abed K, Soffe K, et al: Evaluation of the role of pin fixation versus collar and cuff immobilisation in supracondylar fractures of the humerus in children. Injury 31(3): 163-167,2000
• Kennedy JG, Eustace S, Caulfield R, et al: Extraskeletal Ewing's sarcoma: a case report and review of the literature. Spine 25(15): 1996-1999,2000
• Kennedy JG, O'Grady P, McCarthy DR, et al: An investigation into the role of oxygen free radical scavengers in preventing polymethylmethacrylate-induced necrosis in an osteoblast cell culture. Orthopedics 23(5): 481-485,2000
• Kennedy JG, Soffe KE, Dalla Vedova P, et al: Evaluation of the syndesmotic screw in low Weber C ankle fractures. J Orthop Trauma 14(5): 359-366,2000
• Kennedy JG, Soffe KE, Rogers BW, et al: Deep vein thrombosis prophylaxis in hip fractures: a comparison of the arteriovenous impulse system and aspirin. J Trauma 48(2): 268-272,2000
• Rodgers WB, Kennedy JG, Hergreuter CA, et al: Massive subperiosteal hemorrhage and femoral shaft osteonecrosis: a complication of tissue plasminogen activator therapy for purpura fulminans. Am J Orthop 29(4): 315-319,2000
• Syed AA, Kennedy JG, Mullet H, et al: Fatigue failure of an AO spiral blade. Arch Orthop Trauma Surg 120(5-6): 366-368,2000
• Kennedy JG, El Abed K, Soffe K, Kearns S, Mulcahy D, Condon F, Moore D, Dowling F, Fogarty E. Evaluation of the role of pin fixation versus collar and cuff immobilisation in supracondylar fractures of the humerus in children. Injury 31(2):163-167,2000
• Maher MM, Kennedy JG, Hynes D, Murray JG, O'Connell D.Giant distal humeral geode.Skeletal Radiol. 29(3):165-7, 2000
• Kennedy,JG. Mullett, HJ. FRCSI; O'Rourke, K. Cauda equina syndrome. Current Opinion in Orthopedics. 11(3):192-195,2000
• Kennedy JG, Soffe KE, McGrath A, et al: Predictors of outcome in cauda equina syndrome. Eur Spine J 8(4): 317-322,1999
• Kennedy JG, Harty JA, Gouverneur M, Glimcher M, Salih EJ. The role of basement membrane angiogenic factor in reversing an induced avascular necrosis in a femoral head model. Irish Journal of Orthpaedic Surgery and Trauma 3(2):24-30, 1999
• K. El-Abed, JG Kennedy, F. Condon, D. Mulcahy, F. Dowling, E. Fogarty, D. Moore. Altar Transverse Fusion for Spondylolisthesis in Children. Irish Journal of Orthopaedic Surgery and Trauma 3(1), 1999
• H. Mullett, J.G. Kennedy and W. Quinlan. Subchondral talar cyst following open reduction and internal fixation of an ankle fracture Foot Ankle Surgery. 5(3):147-149,1999
• J.G. Kennedy, M.M. Maher and M.M. Stephens. Fracture dislocation of the tarsal navicular bone: a case report and proposed mechanism of injury
  Foot and Ankle Surgery, 5(3):167-17, 1999
• Kennedy JG, Caulfield R, Quinian W. An usual presentation of a Baker’s cyst. J Royal Coll. Phys and Surg 28(4):203-205, 1999
• Mullett JH, Kennedy JG, O’Rourke SK. Fixed Rotatory Subluxation of the atlanto-axial joint. A Case report and review of literature. Irish Jouranl of Orthopaedic Surgery and Trauma 4(2), 1999
• Kennedy JG, Johnson SM, Collins AL, et al: An evaluation of the Weber classification of ankle fractures. Injury 29(8): 577-580,1998
• Kennedy JG, Rogers WB, Soffe KE, et al: Effect of acetabular component orientation on recurrent dislocation, pelvic osteolysis, polyethylene wear, and component migration. J Arthroplasty 13(5): 530-534,1998
• Kennedy JG, Callanan I, McCarthy D, McGrath A, Walsh MG. Sagital fracture through the body of the odontoid peg- A case report. Irish Journal of Orthopaedic Surgery and Trauma 2(8):27-29, 1998
• Kennedy JG, Rodgers WB, Zurakowski D, et al: Pyrexia after total knee replacement. A cause for concern? Am J Orthop 26(8): 549-52, 554,1997
• Kharrazi FD, Rodgers WB, Kennedy JG, et al: Parturition-induced pelvic dislocation: a report of four cases. J Orthop Trauma 11(4): 277-81; discussion 281-2,1997
• Rodgers WB, Kennedy JG, Zimbler S: Chondromyxoid fibroma of the ala of the sacrum presenting as a cause of lumbar pain in an adolescent. Eur Spine J 6(5): 351-353,1997
• Soffe KE, Kennedy JG, Walsh MG.Esophageal erosion following anterior cervical plating. Irish Journal of Orthopaedics Surgery and Trauma 1(4):56-59, 1997
• Kennedy JG. McGrath A., Stephens MM.Tarsal tunnel syndrome. Irish Journal of Orthoaedic Surgery and Trauma 1(2):45-47, 1996
• Rodgers WB, Kennedy JG, Coran DL, et al: Retrograde intramedullary nailing of the femur using a tibial nail--the adjunctive use of an existing implant: a case report. Bull Hosp Jt Dis 55(2): 78-80,1996
• Rodgers WB, Kharrazi FD, Waters PM, Kennedy JG, McKee MD, Lhowe DW. The use of osseous suture anchors in the treatment of severe, complicated elbow dislocations. Am J Orthop 25(11): 794-798,1996
• Rabb CH, McComb JG, Raffel C, Kennedy JG. Spinal arachnoid cysts in the pediatric age group: an association with neural tube defects. J Neurosurg 77(3): 369-372,1992

Books and Book Chapters

• Kennedy JG, O’Brien T. A concise orthopedic review. Royal College of Surgeons. Dublin; 1999
• Kennedy JG, Healey J. Bone and Soft Tissue Tumors about the Knee.Cpt. 33 IN: Callaghan JJ. The Adult Knee, Lippincott,Philadelphia; 2003
• Kennedy JG, O’Malley M. Arthroscopy. Ankle Arthrodesis using Arthroscopy. New York: Published by Elsevier Science; 2004
• Kennedy JG, O’Malley M. Ankle arthroscopy and resection of anterior osteophytes. Arthroscopy. New York: Published by Elsevier Science; 2004
• Kennedy JG, Hamilton W. Ballet injuries. Foot and Ankle injuries in sports. Published by Mosby; 2005

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Selected Presentations

• June 2009
  Eastern Orthopaedic Association:
  • Co-chairman, Foot and Ankle Symposium
  • Committee Member: “The Ankle Sprain that Won’t Heal”
  • Outcomes Following Modified SCARF Osteotomy: Murawski CD, Hodgkins CW, Egan CJ, Kennedy JG
  • Anteromedial Impingement in the Ankle Joint - Outcomes Following Arthroscopy: Murawski CD, Hodgkins CW, Kennedy JG
• May 2009
  Tri State Soccer Symposium:
  • Speaker on Ankle Injuries in Soccer
• February 2009
  Orthopedic Research Society (ORS):
  • Mechanical strength testing of lateral ligament reconstruction: Prisk VR, Imhauser CW, O’Loughlin PF, Kennedy JG
  AAOS Las Vegas:
  
  • Outcomes Following Modified SCARF Osteotomy: Murawski CD, Kennedy JG
  • Retrograde Drilling for Osteochondral Lesions of the Talus: O’Loughlin PF, Kennedy JG
  • Chondral Lesion Following Ankle Sprains: Kennedy JG
  • Committee Member: “The Ankle Sprain That Won’t Get Better”
• November 2008
  HSS Alumni Day
  • Osteochondral injuries of the talus
• December 2008
  Wright Medical Foot and Ankle Symposium: Current Concepts NYC:
  • Osteochondral injuries of the talus: A Novel classification system and treatment options
• AAOS Washington. February 2005. Physician and Patient Based Outcomes Following Resection of Haglunds Deformity
• New England Orthopedic society, Boston, November 2005. Clinical importance of the lateral branch of the deep peroneal nerve
• AOFAS Seattle Summer 2004 meeting. Outcomes following two screw fixation in ankle arthrodesis
• AOFAS San Fransisco 2004. Outcomes following oblique osteotomy in the treatment of central metatarsalgia

Foot and Ankle Grants

Recipient, 2009 AOFAS Grant - The Biomechanics of Cartilage Damage and Repair at the Ankle Joint: Kennedy JG, Imhauser CW, O’Loughlin PF.