411 results found
Amis AA, Firer P, Mountney J, et al., 2003, Anatomy and biomechanics of the medial patellofemoral ligament, KNEE, Vol: 10, Pages: 215-220, ISSN: 0968-0160
Elias K, Amis AA, Setchell DJ, 2003, The magnitude of cutting forces at high speed, JOURNAL OF PROSTHETIC DENTISTRY, Vol: 89, Pages: 286-291, ISSN: 0022-3913
Gupte CM, Bull AMJ, Thomas RD, et al., 2003, A review of the function and biomechanics of the meniscofemoral ligaments, ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, Vol: 19, Pages: 161-171, ISSN: 0749-8063
Gupte CM, Bull AMJ, Thomas RD, et al., 2003, The meniscofemoral ligaments: secondary restraints to the posterior drawer - Analysis of anteroposterior and rotary laxity in the intact and posterior-cruciate-deficient knee, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 85B, Pages: 765-773, ISSN: 0301-620X
Gupte CM, Bull AMJ, Thomas RD, et al., 2003, The meniscofemoral ligaments: Secondary restraints to the posterior drawer, Journal of Bone and Joint Surgery - Series B, Vol: 85, Pages: 765-773, ISSN: 0301-620X
We have tested the hypothesis that the meniscofemoral ligaments make a significant contribution to resisting anteroposterior and rotatory laxity of the posterior-cruciate-ligament-deficient knee. Eight cadaver human knees were tested for anteroposterior and rotatory laxity in a materials-testing machine. The posterior cruciate ligament (PCL) was then divided, followed by division of the meniscofemoral ligaments (MFLs). Laxity results were obtained for intact, PCL-deficient, and PCL-MFL-deficient knees. Division of the MFLs in the PCL-deficient knee increased posterior laxity between 15° and 90° of flexion. Force-displacement measurements showed that the MFLs contributed 28% to the total force resisting posterior drawer at 90° of flexion in the intact knee, and 70.1% in the PCL-deficient knee. There was no effect on rotatory laxity. This is the first study which shows a function for the MFLs as secondary restraints to posterior tibial translation. The integrity of these structures should be assessed during both imaging and arthroscopic studies of PCL-injured knees since this may affect the diagnosis and management of such injuries.
Gupte CM, Jeevan D, Bull AMJ, et al., 2003, The meniscofemoral ligament - Effect on cranio-caudal and rotatory laxity in the ovine stifle, VETERINARY AND COMPARATIVE ORTHOPAEDICS AND TRAUMATOLOGY, Vol: 16, Pages: 26-31, ISSN: 0932-0814
Harvey AR, Thomas NP, Amis AA, 2003, The effect of screw length and position on fixation of four-stranded hamstring grafts for anterior cruciate ligament reconstruction, KNEE, Vol: 10, Pages: 97-102, ISSN: 0968-0160
Katchburian MV, Bull AMJ, Shih YF, et al., 2003, Measurement of patellar tracking: Assessment and analysis of the literature, CLINICAL ORTHOPAEDICS AND RELATED RESEARCH, Pages: 241-259, ISSN: 0009-921X
McDermott ID, Richards SW, Hallam P, et al., 2003, A biomechanical study of four different meniscal repair systems, comparing pull-out strengths and gapping under cyclic loading, KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 11, Pages: 23-29, ISSN: 0942-2056
Reilly P, Amis AA, Wallace AL, et al., 2003, Supraspinatus tears: Propagation and strain alteration, JOURNAL OF SHOULDER AND ELBOW SURGERY, Vol: 12, Pages: 134-138, ISSN: 1058-2746
Reilly P, Amis AA, Wallace AL, et al., 2003, Mechanical factors in the initiation and propagation of tears of the rotator cuff - Quantification of strains of the supraspinatus tendon in vitro, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 85B, Pages: 594-599, ISSN: 0301-620X
Reilly P, Bull AMJ, Amis AA, et al., 2003, Arthroscopically insertable force probes in the rotator cuff in vivo., Arthroscopy, Vol: 19
In vivo loading data for the rotator cuff would be of value to scientists and clinicians interested in the shoulder. The Arthroscopically Insertable Force Probe (AIFP; Microstrain, Burlington, VT) offers a potential method for collecting this information. A technique for insertion and retrieval of the AIFP from the subscapularis is described. The method was initially established in a cadaveric model. The AIFP was inserted into the subscapularis tendon in 3 volunteers during diagnostic shoulder arthroscopy. After the motor effects of interscalene block had worn off, dynamic data relating to subscapularis tendon loading was collected. The AIFPs were removed through a port site by traction on a 0 (3.5 metric) nylon suture without complications.
Senavongse W, Farahmand F, Jones J, et al., 2003, Quantitative measurement of patellofemoral joint stability: force-displacement behavior of the human patella in vitro, JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 21, Pages: 780-786, ISSN: 0736-0266
Shih YF, Bull AMJ, McGregor AH, et al., 2003, A technique for the measurement of patellar tracking during weight-bearing activities using ultrasound, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE, Vol: 217, Pages: 449-457, ISSN: 0954-4119
bdul Kadir MR, Hansen UN, Amis AA, et al., 2003, Finite element study on the effect of proximal hip stem's macrofeatures on micromotion, Proceedings of the 6th international symposium on computer methods in biomechanics and biomedical engineering, Madrid, Spain, Oct 2003
Amis AA, 2002, Mini-symposium: The elbow (iv) Biomechanics of the elbow, CURRENT ORTHOPAEDICS, Vol: 16, Pages: 349-354, ISSN: 0268-0890
Basso O, Amis AA, Race A, et al., 2002, Patellar tendon fiber strains: Their differential responses to quadriceps tension, CLINICAL ORTHOPAEDICS AND RELATED RESEARCH, Pages: 246-253, ISSN: 0009-921X
Bull AMJ, Earnshaw PH, Smith A, et al., 2002, Intraoperative measurement of knee kinematics in reconstruction of the anterior cruciate ligament, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 84B, Pages: 1075-1081, ISSN: 0301-620X
Bull AMJ, Earnshaw PH, Smith A, et al., 2002, Intraoperative measurement of knee kinematics in reconstruction of the anterior cruciate ligament, Journal of Bone and Joint Surgery - Series B, Vol: 84, Pages: 1075-1081, ISSN: 0301-620X
Our objectives were to establish the envelope of passive movement and to demonstrate the kinematic behaviour of the knee during standard clinical tests before and after reconstruction of the anterior cruciate ligament (ACL). An electromagnetic device was used to measure movement of the joint during surgery. Reconstruction of the ACL significantly reduced the overall enveldpe of tibial rotation (10° to 90° flexion), moved this envelope into external rotation from 0° to 20° flexion, and reduced the anterior position of the tibial plateau (5° to 30° flexion) (p < 0.05 for all). During the pivot-shift test in early flexion there was progressive anterior tibial subluxation with internal rotation. These subluxations reversed suddenly around a mean position of 36 ± 9° of flexion of the knee and consisted of an external tibial rotation of 13 ± 8° combined with a posterior tibial translation of 12 ± 8 mm. This abnormal movement was abolished after reconstruction of the ACL.
Bull AMJ, Katchburian MV, Shih YF, et al., 2002, Standardisation of the description of patellofemoral motion and comparison between different techniques, KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 10, Pages: 184-193, ISSN: 0942-2056
Gupte CM, Smith A, Jamieson N, et al., 2002, Meniscofemoral ligaments-structural and material properties, JOURNAL OF BIOMECHANICS, Vol: 35, Pages: 1623-1629, ISSN: 0021-9290
Gupte CM, Smith A, McDermott ID, et al., 2002, Meniscofemoral ligaments revisited - Anatomical study, age correlation and clinical implications, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 84B, Pages: 846-851, ISSN: 0301-620X
The meniscofemoral ligaments were studied in 84 fresh-frozen knees from 49 cadavers. Combined anterior and posterior approaches were used to identify the ligaments. In total, 78 specimens (93%) contained at least one meniscofemoral ligament. The anterior meniscofemoral ligament (aMFL) was present in 62 specimens (74%), and the posterior meniscofemoral ligament (pMFL) in 58 (69%). The 42 specimens (50%) in which both ligaments were present were from a significantly younger population than that with one MFL or none (p < 0.05). Several anatomical variations were identified, including oblique fibres of the posterior cruciate ligament (PCL), which were seen in 16 specimens (19%). These were termed the 'false pMFL'. The high incidence of MFLs and their anatomical variations should be borne in mind during arthroscopic and radiological examination of the PCL. It is important to recognise the oblique fibres of the PCL on MRI in order to avoid wrongly identifying them as either a pMFL or a tear of the lateral meniscus. The increased incidence of MFLs in younger donors suggests that they degenerate with age.
Gupte C, Bull AMJ, Amis AA, 2002, The meniscofemoral ligament as a secondary restraint - a sheep study, Orthopaedic Research Society.Transactions of the Annual Meeting, Vol: 27, Pages: 908-908, ISSN: 0149-6433
Post WR, Teitge R, Amis A, 2002, Patellofemoral malalignment: looking beyond the viewbox, CLINICS IN SPORTS MEDICINE, Vol: 21, Pages: 521-+, ISSN: 0278-5919
Sanghera B, Amis A, McGurk M, 2002, Preliminary study of potential for rapid prototype and surface scanned radiotherapy facemask production technique, Journal of Medical Engineering and Technology, Vol: 26, Pages: 16-21, ISSN: 1464-522X
Aichroth PM, Wolman R, Maunder T, et al., 2001, Sports injuries: the knee, London, Publisher: Primal Pictures, ISBN: 9781902470214
Amis AA, 2001, Evaluating the healing of articular cartilage defects., J Bone Joint Surg Am, Vol: 83-A, Pages: 1591-1592, ISSN: 0021-9355
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