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445 results on '"Ramkumar, Prem N."'

12. Approach to the Failed Hip Surgery

Author

Haeberle, Heather S., Ramkumar, Prem N., Makhni, Eric C., Nwachukwu, Benedict U., Section editor, Nho, Shane J., editor, Bedi, Asheesh, editor, Salata, Michael J., editor, Mather III, Richard C., editor, and Kelly, Bryan T., editor

Published
2022
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19. Who Are the Anatomic Outliers Undergoing Total Knee Arthroplasty? A Computed Tomography (CT)-Based Analysis of the Hip-Knee-Ankle Axis Across 1,352 Preoperative CTs Using a Deep Learning and Computer Vision-Based Pipeline

Author

Woo, Joshua J., primary, Vidhani, Faizaan R., additional, Zhang, Yibin B., additional, Olsen, Reena J., additional, Nawabi, Danyal H., additional, Fitz, Wolfgang, additional, Chen, Antonia, additional, Iorio, Richard, additional, and Ramkumar, Prem N., additional

Published
2024
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25. Modern Hip Arthroscopy for FAIS May Delay the Natural History of Osteoarthritis in 25% of Patients: A 12-Year Follow-up Analysis.

Author

Ramkumar, Prem N., Olsen, Reena J., Shaikh, Hashim J.F., Nawabi, Danyal H., and Kelly, Bryan T.

Subjects
*HIP surgery, *RISK assessment, *POSTOPERATIVE care, *PREOPERATIVE period, *SURGERY, *PATIENTS, *ARTHROSCOPY, *FEMORACETABULAR impingement, *DESCRIPTIVE statistics, *RELATIVE medical risk, *HIP joint, *LONGITUDINAL method, *OSTEOARTHRITIS, *ELECTRONIC health records, *POSTOPERATIVE period, *PATIENT aftercare, *DISEASE risk factors
Abstract

Background: Little is known about the effect of modern hip arthroscopy on the natural history of femoroacetabular impingement syndrome (FAIS) with respect to joint preservation. Purpose: To (1) characterize the natural history of FAIS and (2) understand the effect of modern hip arthroscopy by radiographically comparing the hips of patients who underwent only unilateral primary hip arthroscopy with a minimum follow-up of 10 years. Study Design: Cohort study; Level of evidence, 3. Methods: Between 2010 and 2012, 619 consecutive patients were reviewed from the practice of a single fellowship-trained hip arthroscopic surgeon. Inclusion criteria were FAIS, bilateral radiographic findings of femoroacetabular impingement, primary unilateral hip arthroscopy (labral repair, femoroplasty, or capsular closure), and minimum 10-year follow-up. The preoperative and minimum 10-year postoperative radiographs of patients were evaluated at each time point. Both operative and nonoperative hips were graded using the Tönnis classification or the presence of hip arthroplasty by 2 independent reviewers. Subgroup analyses were performed. Results: A total of 200 hips from 100 patients were evaluated at a mean follow-up of 12.0 years. Preoperatively, 98% and 99% of operative and nonoperative hips were evaluated as Tönnis grades 0 and 1, respectively; 5% of nonoperative hips had worse Tönnis grades than operative hips. The nonoperative hip advanced to a worse Tönnis grade in 48% (48/100) of cases compared with 28% (28/100) among operative hips. At follow-up, Tönnis grades between hips were equal in 70% (70/100) of the cases, the operative hip had a better grade 25% (25/100) of the time, and the nonoperative hip had a better grade 5% (5/100) of the time. Modern hip arthroscopy was associated with a relative risk reduction of 42% in osteoarthritis progression. Impingement with borderline dysplasia, age, preoperative Tönnis grade, and alpha angle >65° were key risk factors in the radiographic progression of osteoarthritis. Conclusion: Although the majority of patients (70%) undergoing hip arthroscopy for FAIS did not experience differences between operative and nonoperative hips in terms of the radiographic progression of osteoarthritis, the natural history may be favorably altered for 25% of patients whose Tönnis grade was better after undergoing arthroscopic correction. Modern hip arthroscopy indications and techniques represent a valid joint-preservation procedure conferring a relative risk reduction of 42% in the progression of osteoarthritis. Arthroscopy for mixed patterns of impingement and instability were the fastest to degenerate. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Posterior Instability

Author

Frangiamore, Salvatore J., Ramkumar, Prem N., Fritz, Erik M., Mannava, Sandeep, Millett, Peter J., Millett, Peter J., editor, and Pogorzelski, Jonas, editor

Published
2019
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39. Discharge from the Post Anesthesia Care Unit with Motor Blockade after Spinal Anesthesia Safely Optimizes Fast Track Recovery in Primary Total Hip and Knee Arthroplasty

Author

Marino, Joseph, primary, Sikachi, Rutuja R., additional, Ramkumar, Prem N., additional, Baichoo, Nadia, additional, Germano, James A., additional, Sison, Cristina, additional, Lesser, Martin L., additional, Gould, J. Scott, additional, Mont, Michael A., additional, and Scuderi, Giles R., additional

Published
2023
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