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Lamina Spreader Technique Improves Debridement Of Loose Bone And Cement In Total Knee Arthroplasty, Sinan E. Ozgur, Ali Oliashirazi, Grant S. Buchanan, Franklin D. Shuler

Franklin D. Shuler

Abstract Loose bone and cement can promote polyethylene wear that may lead to failure in total knee arthroplasty. The authors propose a technique to enhance the debridement of loose bodies by distracting the cemented components with a lamina spreader following standard debridement with pulsatile lavage. Cement and bone/soft tissue debris was recovered from 51 consecutive primary total knee arthroplasty patients. This technique facilitated the removal of hidden debris in 80% of patients (41/51). On average, 2.6 fragments measuring 158 mm3 were removed per patient. The authors advocate that distraction with a lamina spreader be used to reduce potential sources of …

Lamina Spreader Technique Improves Debridement Of Loose Bone And Cement In Total Knee Arthroplasty, Sinan E. Ozgur, Ali Oliashirazi, Grant S. Buchanan, Franklin D. Shuler

Franklin D. Shuler

A lamina spreader was introduced to the non-articulating, posterior aspect of the tibial and femoral components, and gentle distraction was applied to improve the inspection of the posterior compartment

Lamina Spreader Technique Improves Debridement Of Loose Bone And Cement In Total Knee Arthroplasty, Sinan E. Ozgur, Ali Oliashirazi, Grant S. Buchanan, Franklin D. Shuler

Ali Oliashirazi

A lamina spreader was introduced to the non-articulating, posterior aspect of the tibial and femoral components, and gentle distraction was applied to improve the inspection of the posterior compartment

Lamina Spreader Technique Improves Debridement Of Loose Bone And Cement In Total Knee Arthroplasty, Sinan E. Ozgur, Ali Oliashirazi, Grant S. Buchanan, Franklin D. Shuler

Ali Oliashirazi

Abstract Loose bone and cement can promote polyethylene wear that may lead to failure in total knee arthroplasty. The authors propose a technique to enhance the debridement of loose bodies by distracting the cemented components with a lamina spreader following standard debridement with pulsatile lavage. Cement and bone/soft tissue debris was recovered from 51 consecutive primary total knee arthroplasty patients. This technique facilitated the removal of hidden debris in 80% of patients (41/51). On average, 2.6 fragments measuring 158 mm3 were removed per patient. The authors advocate that distraction with a lamina spreader be used to reduce potential sources of …

Technique To Improve Cement Penetration In Total Knee Arthroplasty, Richard Boe Jr, Ali Oliashirazi

Ali Oliashirazi

In total knee arthroplasty, infection has always been cited as being the number one cause of failure. However, more recent studies have shown aseptic loosening as the top reason for failure now. Proper cement technique is an important factor in reducing the occurrence of aseptic loosening. Clean and dried bone are important in achieving rigid cement fixation. Subchondral cysts may be hidden below the cut bone surface and may interfere with cement interdigitation. During a recent total knee arthroplasty case, a simple technique was developed for identifying and clearing out these cysts. By only using the suction tip, the gentle …

Technique To Improve Cement Penetration In Total Knee Arthroplasty, Richard Boe, Ali Oliashirazi

Ali Oliashirazi

Pre-operative and post-operative AP radiographs of initial patient using described technique with the evacuated cyst filled with cement highlighted

How To Manage Knee Arthritis: Best Practices For Treatment Prior To Orthopaedic Referral, Ali Oliashirazi Md, Alex Caughran Md, Zain Quazi Md, Grant Buchanan Md, Akash Sharma, Franklin D. Shuler Md, Phd

Franklin D. Shuler

Osteoarthritis (OA) of the knee is a debilitating disease in which degeneration of the joint space cartilage can lead to life-altering pain and stiffness. The prevalence of OA has a strong correlation with age, with evidence of radiographic knee OA found in 37.4% of persons older than 60 years of age. According to the Agency for Healthcare Research and Quality’s (AHRQ) 2013 report, osteoarthritis was ranked the second most expensive condition for Medicare and private insurers, with over 90% of the hospitalizations for OA involving a knee or hip replacement. It is projected that by 2030 the number of primary …

How To Manage Knee Arthritis: Best Practices For Treatment Prior To Orthopaedic Referral, Ali Oliashirazi Md, Alex Caughran Md, Zain Quazi Md, Grant Buchanan Md, Akash Sharma, Franklin D. Shuler Md, Phd

Ali Oliashirazi

Osteoarthritis (OA) of the knee is a debilitating disease in which degeneration of the joint space cartilage can lead to life-altering pain and stiffness. The prevalence of OA has a strong correlation with age, with evidence of radiographic knee OA found in 37.4% of persons older than 60 years of age. According to the Agency for Healthcare Research and Quality’s (AHRQ) 2013 report, osteoarthritis was ranked the second most expensive condition for Medicare and private insurers, with over 90% of the hospitalizations for OA involving a knee or hip replacement. It is projected that by 2030 the number of primary …

Reactive Oxygen And Nitrogen Species Induce Protein And Dna Modifications Driving Arthrofibrosis Following Total Knee Arthroplasty., Theresa A Freeman, Javad Parvizi, Craig J Della Valle, Marla J Steinbeck

Theresa A Freeman

BACKGROUND: Arthrofibrosis, occurring in 3%-4% of patients following total knee arthroplasty (TKA), is a challenging condition for which there is no defined cause. The hypothesis for this study was that disregulated production of reactive oxygen species (ROS) and nitrogen species (RNS) mediates matrix protein and DNA modifications, which result in excessive fibroblastic proliferation.

RESULTS: We found increased numbers of macrophages and lymphocytes, along with elevated amounts of myeloperoxidase (MPO) in arthrofibrotic tissues when compared to control tissues. MPO expression, an enzyme that generates ROS/RNS, is usually limited to neutrophils and some macrophages, but was found by immunohistochemistry to be expressed …