Research Topics
| C Benjamin MaSummaryAffiliation: University of California Country: USA Publications
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Detail Information
Publications
Hamstring anterior cruciate ligament reconstruction: a comparison of bioabsorbable interference screw and endobutton-post fixationC Benjamin Ma
Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
Arthroscopy 20:122-8. 2004....- Bone morphogenetic proteins-signaling plays a role in tendon-to-bone healing: a study of rhBMP-2 and nogginC Benjamin Ma
University of California, San Francisco, Department of Orthopaedic Surgery, 500 Parnassus Avenue, MU 320W, San Francisco, CA 94143
Am J Sports Med 35:597-604. 2007..Successful anterior cruciate ligament reconstruction requires secure healing between tendon and bone... - Biomechanical evaluation of arthroscopic rotator cuff repairs: double-row compared with single-row fixationC Benjamin Ma
Department of Orthopaedic Surgery, University of California San Francisco, 500 Parnassus Avenue, MU 320W, San Francisco, CA 94143 0728, USA
J Bone Joint Surg Am 88:403-10. 2006..The objective of this study was to compare the initial cyclic loading and load-to-failure properties of double-row fixation with those of three commonly used single-row techniques... 
Can pre-operative measures predict quadruple hamstring graft diameter?C Benjamin Ma
University of California, San Francisco, San Francisco, California 94143, United States
Knee 17:81-3. 2010..Regardless of other variables, 42% of females will have tunnel diameters of 7mm or less. An alternative graft choice should be discussed pre-operatively if graft sizes may be of concern for the tall and large female patients...
Relationship between trabecular bone structure and articular cartilage morphology and relaxation times in early OA of the knee joint using parallel MRI at 3 TR I Bolbos
Musculoskeletal Quantitative Imaging Research, Department of Radiology, University of California San Francisco, San Francisco, CA 94107, USA
Osteoarthritis Cartilage 16:1150-9. 2008..To evaluate trabecular bone structure in relationship with cartilage parameters in distal femur and proximal tibia of the human knee at 3Tesla (3T) using high-resolution magnetic resonance imaging (MRI) with parallel imaging...- Prevalence of pathologic findings in asymptomatic knees of marathon runners before and after a competition in comparison with physically active subjects-a 3.0 T magnetic resonance imaging studyRobert Stahl
Musculoskeletal and Quantitative Imaging Group, Department of Radiology, University of California, San Francisco, 185 Berry Street, Suite 350, San Francisco, CA 94107 0946, USA
Skeletal Radiol 37:627-38. 2008..To compare the diagnostic performance of cartilage-dedicated magnetic resonance imaging (MRI) sequences at 3.0 T... - Evaluating rotational kinematics of the knee in ACL-ruptured and healthy patients using 3.0 Tesla magnetic resonance imagingBryan D Haughom
School of Medicine, University of California, San Francisco UCSF, San Francisco, CA 94143 0729, USA
Knee Surg Sports Traumatol Arthrosc 20:663-70. 2012..The hypothesis of the study is that there is greater tibial rotation (TR) in women than men, and also in ACL-deficient than healthy knees... - Abnormal tibiofemoral kinematics following ACL reconstruction are associated with early cartilage matrix degeneration measured by MRI T1rhoBryan Haughom
University of California San Francisco, School of Medicine, USA
Knee 19:482-7. 2012..Our study aimed to evaluate kinematics following ACL-reconstruction, cartilage health (using T(1ρ) MRI), and assess whether altered kinematics following ACL-reconstruction are associated with early cartilage degeneration... - Magnetic resonance imaging evaluation of knee kinematics after anterior cruciate ligament reconstruction with anteromedial and transtibial femoral tunnel drilling techniquesWilliam W Schairer
School of Medicine, University of California, San Francisco, 94143 0728, USA
Arthroscopy 27:1663-70. 2011.... - Magnetic resonance imaging of 3-dimensional in vivo tibiofemoral kinematics in anterior cruciate ligament-reconstructed kneesR Dana Carpenter
Department of Radiology, University of California, San Francisco, California 94143, USA
Arthroscopy 25:760-6. 2009..The purpose of this study was to use magnetic resonance imaging (MRI) to determine 3-dimensional knee kinematics after anterior cruciate ligament (ACL) reconstruction... - Cartilage in anterior cruciate ligament-reconstructed knees: MR imaging T1{rho} and T2--initial experience with 1-year follow-upXiaojuan Li
Musculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, China Basin Landing, 185 Berry St, Suite 350, San Francisco, CA 94107, USA xiaojuan li
Radiology 258:505-14. 2011.... - Longitudinal analysis of T1ρ and T2 quantitative MRI of knee cartilage laminar organization following microfracture surgeryAlexander A Theologis
School of Medicine, University of California, San Francisco UCSF, San Francisco, CA 94158, USA
Knee 19:652-7. 2012..To quantitate longitudinally the radiographic properties of different layers of repaired tissue following microfracture (MFx) surgery using T(1ρ) and T(2) magnetic resonance imaging (MRI)... - T1rho, T2 and focal knee cartilage abnormalities in physically active and sedentary healthy subjects versus early OA patients--a 3.0-Tesla MRI studyRobert Stahl
Department of Radiology, University of California, San Francisco, CA 94107 0946, USA
Eur Radiol 19:132-43. 2009..Thus, T1rho and T2 could be a parameter suited to identify active healthy subjects at higher risk for developing cartilage pathology... - In vivo T1rho quantitative assessment of knee cartilage after anterior cruciate ligament injury using 3 Tesla magnetic resonance imagingRadu I Bolbos
Musculo skeletal Quantitative Imaging Research, Department of Radiology, University of California, San Francisco, San Francisco, California 94107, USA
Invest Radiol 43:782-8. 2008.... - Evaluating rotational kinematics of the knee in ACL reconstructed patients using 3.0 Tesla magnetic resonance imagingAbbas Kothari
University of California, San Francisco, Department of Orthopaedic Surgery, 1500 Owens Street, San Francisco, CA 94158, USA
Knee 19:648-51. 2012..We also hypothesize that ACL reconstructed knees will have greater rotational laxity when compared to healthy contralateral knees... - Magnetic resonance T(1 rho) imaging of osteoarthritis: a rabbit ACL transection modelJesus Lozano
University of California, San Francisco School of Medicine, San Francisco, CA 94158, USA
Magn Reson Imaging 27:611-6. 2009.... - T1rho relaxation time of the meniscus and its relationship with T1rho of adjacent cartilage in knees with acute ACL injuries at 3 TR I Bolbos
Musculo skeletal Quantitative Imaging Research MQIR, Department of Radiology, University of California, San Francisco UCSF, San Francisco, CA 94107, USA
Osteoarthritis Cartilage 17:12-8. 2009.... - Comparison of completely knotless and hybrid double-row fixation systems: a biomechanical studyThomas Chu
Biomechanical Testing Facility, UCSF SFGH Orthopaedic Trauma Institute, San Francisco, California, USA
Arthroscopy 27:479-85. 2011.... - Detection of posttraumatic cartilage injury using quantitative T1rho magnetic resonance imaging. A report of two cases with arthroscopic findingsJesus Lozano
Department of Orthopaedic Surgery, University of California at San Francisco, 185 Berry Street, Suite 350, San Francisco, CA 94107, USA
J Bone Joint Surg Am 88:1349-52. 2006 - MRI analysis of in vivo meniscal and tibiofemoral kinematics in ACL-deficient and normal kneesSandra J Shefelbine
Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, MU 320W, San Francisco, California 94143-0728, USA
J Orthop Res 24:1208-17. 2006..These results help explain the increased risk of meniscal tears and osteoarthritis in chronic ACL deficient knees... - Biomechanical comparison of transosseous versus suture anchor repair of the subscapularis tendonDaniel J Wheeler
Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143 0728, USA
Arthroscopy 26:444-50. 2010..We also performed real-time measurement of contact area and pressure of the repair site under rotational loads... - Evaluation of bone bruises and associated cartilage in anterior cruciate ligament-injured and -reconstructed knees using quantitative t(1ρ) magnetic resonance imaging: 1-year cohort studyAlexander A Theologis
School of Medicine, University of California, San Francisco, California, USA
Arthroscopy 27:65-76. 2011..To quantitate bone marrow edema-like lesions (BMELs) and the radiologic properties of cartilage in knees with acute anterior cruciate ligament (ACL) injuries using T(1ρ) magnetic resonance imaging over a 1-year period... - Assessment of cartilage-dedicated sequences at ultra-high-field MRI: comparison of imaging performance and diagnostic confidence between 3.0 and 7.0 T with respect to osteoarthritis-induced changes at the knee jointRobert Stahl
Musculoskeletal and Quantitative Imaging Group, Department of Radiology, University of California, San Francisco, CA 94107 0946, USA
Skeletal Radiol 38:771-83. 2009..0 T ultra-high-field (UHF) magnetic resonance imaging (MRI) and to compare imaging performance and diagnostic confidence concerning osteoarthritis (OA)-induced changes at 7.0 and 3.0 T MRI... - Do cartilage repair procedures prevent degenerative meniscus changes?: longitudinal t1ρ and morphological evaluation with 3.0-T MRIPia M Jungmann
Musculoskeletal and Quantitative Imaging Research, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
Am J Sports Med 40:2700-8. 2012..Cartilage repair (CR) procedures are widely accepted for treatment of isolated cartilage defects in the knee joint. However, it is not well known whether these procedures prevent degenerative joint disease... - Patients' attitudes and factors in their selection of grafts for anterior cruciate ligament reconstructionSunny C Cheung
Department of Orthopaedic Surgery, Sports Medicine and Shoulder Surgery, University of California, San Francisco, United States
Knee 19:49-54. 2012..Older patients were more concerned with autograft donor site morbidity, and patients with a higher level of education were less averse to allograft... - Comparative study of imaging at 3.0 T versus 1.5 T of the kneeScott Wong
Department of Radiology, University of California, San Francisco, CA 94143 0628, USA
Skeletal Radiol 38:761-9. 2009..5 and 3.0 T in the same patients concerning image quality and visualization of cartilage pathology and to assess diagnostic performance using arthroscopy as a standard of reference... - All-inside meniscus repair: a systematic reviewJesus Lozano
University of California, San Francisco School of Medicine, CA 94143, USA
Clin Orthop Relat Res 455:134-41. 2007..Given the paucity of randomized controlled studies comparing different all-inside meniscal repairs, no definite conclusions can be made regarding the difference in clinical outcomes of various all-inside meniscal repair devices... - Intraosseous ganglion of the glenoidJeffrey E Wong
University of California, Irvine, USA
Am J Orthop (Belle Mead NJ) 39:E19-21. 2010..Intraosseous ganglions in the glenoid are uncommon. This case report illustrates the management and outcome of this uncommon but symptomatic shoulder problem... - The presence of fatty infiltration in the infraspinatus: its relation with the condition of the supraspinatus tendonSunny Cheung
University of California, San Francisco, USA
Arthroscopy 27:463-70. 2011..We aim to determine the prevalence of fatty infiltration and tears in the infraspinatus and to identify any associated risk factors... - Exertional thigh pain in a runnerAnthony Luke
Department of Orthopedics, University of California, San Francisco, 500 Parnassus Avenue, MU-320W, San Francisco, CA 94143-0728, USA
Curr Sports Med Rep 5:251-3. 2006 - An unusual presentation of synovial chondromatosis of the knee: a case reportJaicharan Iyengar
School of Medicine, University of California-San Francisco, San Francisco, CA, USA
Clin J Sport Med 17:157-9. 2007 - Measurement of posterior tibial translation in the posterior cruciate ligament-reconstructed knee: significance of the shift in the reference positionC Benjamin Ma
Musculoskeletal Research Center, Department of Orthopaedic Surgery University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
Am J Sports Med 31:843-8. 2003..Clinical Relevance: The measurement of total anterior-posterior translation may be a more accurate way to assess kinematics of the reconstructed knee... - The relationship between tear severity, fatty infiltration, and muscle atrophy in the supraspinatusJeffrey J Barry
Department of Orthopaedic Surgery, University of California San Francisco, CA 94158, USA
J Shoulder Elbow Surg 22:18-25. 2013..We hypothesize that fatty infiltration and muscle atrophy are two distinct processes independently associated with supraspinatus tears... - Shoulder biomechanicsRoberto Lugo
Sports Medicine and Shoulder Service, University of California, San Francisco, San Francisco, CA 914143, USA
Eur J Radiol 68:16-24. 2008..The goal of this article is to review how these structures interact to provide optimal stability and how failure of some of these mechanisms can lead to shoulder joint pathology... - In vivo 3T spiral imaging based multi-slice T(1rho) mapping of knee cartilage in osteoarthritisXiaojuan Li
Musculo skeletal Quantitative Imaging Research MQIR, Department of Radiology, University of California, San Francisco UCSF, 94107, USA
Magn Reson Med 54:929-36. 2005..The results suggest that T(1rho) relaxation times may be a promising clinical tool for osteoarthritis detection and treatment monitoring... - The effect of osteoclastic activity on tendon-to-bone healing: an experimental study in rabbitsScott A Rodeo
Laboratory for Soft Tissue Research, The Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
J Bone Joint Surg Am 89:2250-9. 2007.... - An arthroscopic stitch for massive rotator cuff tears: the Mac stitchJohn D MacGillivray
Sports Medicine and Shoulder Service, The Hospital for Special Surgery, New York, New York, USA
Arthroscopy 20:669-71. 2004..The Mac stitch is a simple arthroscopic stitch that can be used for small and massive rotator cuff repairs... - Biomechanical evaluation of arthroscopic rotator cuff stitchesC Benjamin Ma
The Hospital for Special Surgery, New York, NY 10021, USA
J Bone Joint Surg Am 86:1211-6. 2004..The ultimate tensile load before failure of the massive cuff stitch was significantly higher (p < 0.05) than that of the simple and horizontal stitches... - Interobserver agreement in the classification of rotator cuff tears using magnetic resonance imagingEdwin E Spencer
Shoulder and Elbow Institute, Knoxville Orthopaedic Clinic, Knoxville, TN 37922, USA
Am J Sports Med 36:99-103. 2008.... - Magnetic resonance imaging of the ankle at 3.0 Tesla and 1.5 Tesla in human cadaver specimens with artificially created lesions of cartilage and ligamentsJan S Bauer
Department of Radiology, Technical University, Munich, Germany
Invest Radiol 43:604-11. 2008..To compare magnetic resonance imaging of the ankle joint at 1.5 Tesla (T) and 3.0 T in the assessment of cartilage and ligament pathology in fresh human cadaver specimens...