Mr Dennis Molloy — Research

Mr Dennis Molloy — Research

Throughout Mr Molloy’s career he has been involved in research which has resulted in many publications in peer reviewed journals and presentations at both national and international conferences for example, the American Academy of Orthopaedic Surgeons annual meeting and the International Society for Technology in Arthroplasty annual conference.

During his career he has obtained over £100,000 to carry out a range of research studies. From 2004 to 2006 Mr Molloy spent 18 months completing an MPhil from Queen’s University Belfast on factors effecting blood loss following total knee replacement at Musgrave Park Hospital. This was a randomised controlled trial comparing the blood saving effect of a topical fibrin spray compared to systemic tranexamic acid for total knee replacement patients.

Mr Molloy completed his fellowship in the Mater Hospital in Sydney where he spent 12 months from July 2011 working as a fellow in hip and knee replacement & revision arthroplasty. During his time there he was awarded funding to complete a study looking at the stability of three different knee replacement systems and compare their radiological and clinical outcomes. He also completed a clinical and radiological review in Sydney along with Dr William Walter on a modular femoral implant and its mechanically assisted crevice corrosion and subsequent adverse local tissue reaction which was similar to that seen in metal on metal resurfacing which has resulted in the worldwide withdrawal of the implant.

Mr Molloy continues to participate in research becoming a trustee of Belfast Artroplasty Reseach Trust (BART) in 2014.

The Belfast Arthroplasty Research Trust (BART) is charitable organisation formed in 2001 by a group of consultant orthopaedic surgeons and lecturers from Queen’s University Belfast. The aim of the charity is to provide funding for various research projects in joint replacement for the benefit of patients in Musgrave Park Hospital. Musgrave Park Hospital is the regional orthopaedic and rehabilitation centre for Northern Ireland. Since the charity has been established it has raised over £1.6 million for joint replacement research. The main areas of research for BART are: restoration of joint centre during hip replacement, patient satisfaction following knee replacements, blood loss, complications following joint replacement and general outcomes measurement but BART is interested in any type of research which is of potential benefit those patients who have had/will have a joint replacement.

Publications

Molloy D.O, Gray J. Jenkins M.R. “Glass in a scalp laceration”: an unusual case of penetrating head injury presenting to the emergency department.

Eur J Emerg Med. 2004 Apr;11(2):117-8.

Molloy D.O, Riaz M, Herbert K. Sub-ungual epidermoid cyst. J Hand Surg [Br]. 2006 Jun;31(3):345. Epub 2006 Feb 14.

Archbold HA, Mockford B, Molloy D, McConway J, Ogonda L, Beverland D. The transverse acetabular ligament: an aid to orientation of the acetabular component during primary total hip replacement: a preliminary study of 1000 cases investigating postoperative stability. J Bone Joint Surg Br. 2006 Jul;88(7):883-6.

Archbold H.A. P, Mohammed M., O’Brien S., Molloy D., McConway J., Beverland D.E. Limb length restoration during total hip arthroplasty: Use of a caliper to control femoral component insertion and accurate acetabular placement relative to the transverse acetabular ligament – Hip International 2006; 16(1): 33 – 38.

Molloy D.O, Archbold HA, Ogonda L, McConway J, Wilson R.K, Beverland D. Comparison of topical fibrin spray and tranexamic acid on blood loss after total knee replacement: a prospective, randomised controlled trial. J Bone Joint Surg Br. 2007 Mar;89(3):306-9.

Molloy D.O, Mockford B.J, Beverland D.E. Results following a Medial Approach to a Valgus Knee in Total Knee Arthroplasty- J Bone Joint Surg [Br] Vol 87B, Issue SUPP II, 146.

Molloy D.O, Mockford B.J, Beverland D.E. Blood Loss following Soft Tissue Release in Total Knee Arthroplasty of the Valgus Knee- – J Bone Joint Surg [Br] Vol 87B, Issue SUPP II, 156.

Molloy D.O, Chris M Jack, William L. Walter. A Mid Term Analysis Suggests Ceramic on Ceramic Hip Arthroplasty is Durable with Minimal Wear and Low Risk of Squeak. Hospital for Specialist Surgery Journal; Hospital for Specialist Surgery Journal, Volume 8, Number 3 (2012), 291-294.

C. M. Jack, D. O. Molloy, W. L. Walter, FRACS, FAOrthA, B. A. Zicat, and W. K. Walter, The use of ceramic-on-ceramic bearings in isolated revision of the acetabular component. Bone Joint J March 2013 vol. 95-B no. 3 333-338.

Michael B Cross, Christina Esposito, Anna Sokolova, Reza Jenabzadeh, Dennis Molloy, Selin Munir, Bernard Zicat, William K Walter and William L Walter Fretting and Corrosion Changes in Modular Total Hip Arthroplasty. Bone Joint J 2013 vol. 95-B no. SUPP 15 127.

Dennis O. Molloy, Selin Munir; Christopher M. Jack, Michael B. Cross, MD; William L. Walter; William K. Walter, Sr;  Fretting and Corrosion in Modular-Neck Total Hip Arthroplasty Femoral Stems J Bone Joint Surg Am, 2014 Mar 19;96(6):488-493.

D. E. Beverland, C. K. J. O’Neill, M. Rutherford, D. Molloy, J. C. Hill. Placement of the acetabular component. Bone Joint J 2016;98-B(1 Suppl A):37–43.

O’Neill, C. K. J., D. Molloy, C. Patterson, and D. E. Beverland. “A RANDOMISED CONTROLLED STUDY INVESTIGATING THE EFFECT OF PATIENT PELVIC POSITIONING ON RADIOLOGICAL ACETABULAR INCLINATION DURING TOTAL HIP ARTHROPLASTY (THA).” Bone Joint J 98, no. SUPP 11 (2016): 11-11.

O’Neill, C., D. Molloy, C. Patterson, and D. Beverland. “A RANDOMISED CONTROLLED STUDY INVESTIGATING THE EFFECT OF ACETABULAR COMPONENT INSERTION METHOD ON OPERATIVE ACETABULAR INCLINATION DURING TOTAL HIP ARTHROPLASTY.” Bone Joint J 97, no. SUPP 12 (2015): 32-32.

Beverland, D. E., C. K. J. O’Neill, M. Rutherford, D. Molloy, and J. C. Hill. “Placement of the acetabular component.” Bone Joint J 98, no. 1 Supple A (2016): 37-43.

Munir, Selin, Dennis Molloy, Tim Hasted, Christopher M. Jack, Andrew Shimmin, and William Walter. “SAGITTAL STABILITY IN FOUR DIFFERENT KNEE DESIGNS: A SINGLE-CENTRE INDEPENDENT REVIEW.” Bone Joint J 98, no. SUPP 4 (2016): 113-113.

O’Neill, Christopher KJ, Dennis Molloy, Christopher Patterson, and David Beverland. “DIGITAL INCLINOMETER-ASSISTED ACETABULAR COMPONENT IMPLANTATION: A NOVEL TECHNIQUE TO IMPROVE ACETABULAR COMPONENT ORIENTATION DURING TOTAL HIP ARTHROPLASTY.” Bone Joint J 98, no. SUPP 3 (2016): 95-95.

Presentation – National and International Conferences

  • Primary Author of Paper – Results following a Medial Approach to a Valgus Knee in Total Knee Arthroplasty- Podium Presentation at British Association for Surgery of the Knee- April 2004.
  • Primary Author of Paper – Blood loss following soft tissue release in total knee arthroplasty of the valgus knee – Podium Presentation at British Association for Surgery of the Knee- April 2004.
  • Author of Paper – The implications of changing the transfusion trigger for primary total knee arthroplasty – Podium presentation at Irish Orthopaedic Association – Killarney 2004.
  • Author of Paper – Effects of using a Re-infusion drain after Total Knee Arthroplasty –A Prospective Randomised Study- Podium presentation at the Academy of American Orthopaedic Surgeons – Washington 02/2005.
  • Author of Paper – An evaluation of the fascia iliaca block in patients undergoing minimally invasive primary hip arthroplasty. Podium presentation British Anaesthetics Society. Prize winner- best clinical paper.
  • Author of Paper. Mini-incision or mini-scar following total hip arthroplasty – A question of cosmesis?. British Hip Society –Spring 2004.
  • Primary Author of Paper–Factors affecting pre-operative haemoglobin and subsequent effects on transfusion rates following total knee arthroplasty– Podium presentation at British Association for Surgery of the Knee– March 2005.
  • Primary Author of Paper – Long term results of total knee arthroplasty without patellar resurfacing in isolated patellofemoral osteoarthritis. Podium presentation British Association for Surgery of the Knee – March 2005.
  • Primary Author of Paper – The Effect of Aspirin and Non-steroidal on Post-Operative Blood Loss Following Total Knee Arthroplasty – Podium presentation at the 7th EFFORT Congress Lisbon June 2005.
  • Primary Author of Paper- Readmission rates due to post-operative wound infections following DHS and Hemiarthroplasty- The Royal Experience- Podium presentation at the 7th EFFORT Congress Lisbon June 2005.
  • Primary Author of Paper- Readmission rates due to post-operative wound infections following DHS and Hemiarthroplasty- The Royal Experience- Podium Presentation Irish Orthopaedic Association, June 2005.
  • Author of paper – The effect of postoperative flexion on blood loss following total knee arthroplasty – Podium presentation Sydney 2005.
  • Author of Paper – An evaluation of the fascia iliaca block in patients undergoing minimally invasive primary hip arthroplasty. Podium presentation American Anaesthetics Society September 2005.
  • Primary Author of Paper – Comparison of the blood saving effect of Tranexamic Acid and Topical Fibrin Spray following TKA – Trauma and Rehab RRG annual conference.
  • Author of Paper – The surgical significance of the transverse acetabular ligament in total hip arthroplasty – American Academy of Orthopaedic Surgeons, Chicago, March 2006.
  • Primary Author of paper – Effect of Tranexamic versus Topical Fibrin Spray on Blood Loss following Total Knee Arthroplasty – BASK, March 2006.
  • Author of paper – The blood saving effect of immediate knee flexion following total knee arthroplasty – BASK, March 2006.
  • Primary Author of paper – Comparison of Tranexamic versus Topical Fibrin Spray on blood loss following total knee arthroplasty – Pan-celtic meeting Ayr June 2006. Prize winner- best clinical paper.
  • Author of paper – The transverse acetabular ligament: an aid to acetabular component orientation during primary total hip arthroplasty – British Hip Society, March 2006.
  • Author of paper – National Dermofasciectomy Rates in Dupuytren’s Disease. – Sam Simmons Meeting 2008.
  • Author of paper – A prospective comparison of the blood saving effect of 3 and 6 hours immediate postoperative flexion versus extension following total knee arthroplasty – Podium presentation at British Association for Surgery of the Knee – April 2009.
  • Author of paper – Molloy D.O. Episito C, Walter W.L. Edge loading wear rates of large diameter metal femoral heads versus alumina femoral heads. Podium presentation Sixth International Congress of Chinese Orthopaedic Association (COA2011) on December 1-4, 2011.
  • Author of paper – Jack C, Molloy D.O, Walter W.L. Large Diameter Metal on Metal Articulations. Comparison of Total Hip Arthroplasty and Hip Resurfacing Arthroplasty. Podium presentation – Sixth International Congress of Chinese Orthopaedic Association (COA2011) on December 1-4, 2011.
  • Author of paper – Revision hip replacement: removing a cement-less femoral component – Podium presentation – Sixth International Congress of Chinese Orthopaedic Association (COA2011) on December 1-4, 2011.
  • Author of paper – Ceramic On Ceramic Bearings in Acetabular Only Revision Hip Arthroplasty – Podium presentation Australian Arthroplasty Society, Melbourne June 2012.
  • Primary Author of paper – Medial Femoral Calcar in Metal-on-Metal THA’s:  The Canary in the Mine – Podium Presentation Australian Arthroplasty Society, Melbourne June 2012.
  • Primary Author of paper – Fretting and Corrosion in Modular Hip System – A Cause for Concern – Podium Presentation Australian Arthroplasty Society, Melbourne June 2012.
  • Primary Author of paper – Medial Femoral Calcar in Metal-on Metal THA’s- The Canary in the Mine –Podium presentation International Society for Technology in Arthroplasty, 3-6th October Sydney 2012.
  • Primary Author of paper – Sagittal Stability in Three Different Knee Designs. A Single Centre Independent Review –Podium presentation International Society for Technology in Arthroplasty, 3-6th October Sydney 2012.
  • Primary Author of paper – Fretting and Corrosion in Exchangable Neck Modular Hip System – A Cause for Concern –Podium presentation American Academy of Orthopaedic Surgeons, Chicago March 21st 2013.
  • Primary Author of paper- Sagittal Stability in Knee systems. –Podium presentation International Society for Technology in Arthroplasty, September Osaka, Japan 2014.

Published: 14 September 2016

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Mr Molloy continues to participate in research becoming a trustee of Belfast Artroplasty Research Trust (BART) in 2014.

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