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Journal articleGregory T, Hansen U, Khanna M, et al., 2014,
A CT scan protocol for the detection of radiographic loosening of the glenoid component after total shoulder arthroplasty
, Acta Orthopaedica, Vol: 85, Pages: 91-96, ISSN: 0001-6470Background and purpose It is difficult to evaluate glenoid component periprosthetic radiolucencies in total shoulder arthroplasties (TSAs) using plain radiographs. This study was performed to evaluate whether computed tomography (CT) using a specific patient position in the CT scanner provides a better method for assessing radiolucencies in TSA.Methods Following TSA, 11 patients were CT scanned in a lateral decubitus position with maximum forward flexion, which aligns the glenoid orientation with the axis of the CT scanner. Follow-up CT scanning is part of our routine patient care. Glenoid component periprosthetic lucency was assessed according to the Molé score and it was compared to routine plain radiographs by 5 observers.Results The protocol almost completely eliminated metal artifacts in the CT images and allowed accurate assessment of periprosthetic lucency of the glenoid fixation. Positioning of the patient within the CT scanner as described was possible for all 11 patients. A radiolucent line was identified in 54 of the 55 observed CT scans and osteolysis was identified in 25 observations. The average radiolucent line Molé score was 3.4 (SD 2.7) points with plain radiographs and 9.5 (SD 0.8) points with CT scans(p = 0.001). The mean intra-observer variance was lower in the CT scan group than in the plain radiograph group (p = 0.001).Interpretation The CT scan protocol we used is of clinical value in routine assessment of glenoid periprosthetic lucency after TSA. The technique improves the ability to detect and monitor radiolucent lines and, therefore, possibly implant loosening also.
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Journal articleStephen JM, Kader D, Lumpaopong P, et al., 2014,
The Effect of Femoral Tunnel Position and Graft Tension on Patellar Contact Mechanics and Kinematics After Medial Patellofemoral Ligament Reconstruction
, AMERICAN JOURNAL OF SPORTS MEDICINE, Vol: 42, Pages: 364-372, ISSN: 0363-5465- Author Web Link
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- Citations: 114
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Journal articleHunt NC, Ghosh KM, Blain AP, et al., 2014,
How does laxity after single radius total knee arthroplasty compare with the native knee?
, J. Orthop. Res., Vol: 32, Pages: 1208-1213, ISSN: 1554-527X -
Journal articleAthwal KK, Hunt NC, Davies AJ, et al., 2014,
Clinical biomechanics of instability related to total knee arthroplasty
, Clinical Biomechanics, ISSN: 0268-0033 -
Journal articleWiik AV, Manning V, Strachan RK, et al., 2013,
Unicompartmental knee arthroplasty enables near normal gait at higher speeds, unlike total knee arthroplasty
, Journal of Arthroplasty, Vol: 28, Pages: 176-178, ISSN: 0883-5403Top walking speed (TWS) was used to compare UKA with TKA. Two groups of 23 patients, well matched for age, gender, height and weight and radiological severity were recruited based on high functional scores, more than twelve months post UKA or TKA. These were compared with 14 preop patients and 14 normal controls. Their gait was measured at increasing speeds on a treadmill instrumented with force plates. Both arthroplasty groups were significantly faster than the preop OA group. TKA patients walked substantially faster than any previously reported series of knee arthroplasties. UKA patients walked 10% faster than TKA, although not as fast as the normal controls. Stride length was 5% greater and stance time 7% shorter following UKA — both much closer to normal than TKA. Unlike TKA, UKA enables a near normal gait one year after surgery.
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Journal articleTuncer M, Cobb JP, Hansen UN, et al., 2013,
Validation of multiple subject-specific finite element models of unicompartmental knee replacement
, MEDICAL ENGINEERING & PHYSICS, Vol: 35, Pages: 1457-1464, ISSN: 1350-4533- Author Web Link
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- Citations: 18
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Journal articleStephen JM, Kader D, Lumpaopong P, et al., 2013,
Sectioning the medial patellofemoral ligament alters patellofemoral joint kinematics and contact mechanics
, JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 31, Pages: 1423-1429, ISSN: 0736-0266- Author Web Link
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- Citations: 43
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Conference paperHalewood C, Luyckx T, Claes S, et al., 2013,
ACL Retaining Total Knee Arthroplasty can Improve Knee Stability
, ESB 2013 -
Journal articlevan Arkel RJ, Modenese L, Phillips ATM, et al., 2013,
Hip abduction can prevent posterior edge loading of hip replacements
, JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 31, Pages: 1172-1179, ISSN: 0736-0266- Author Web Link
- Open Access Link
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- Citations: 48
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Journal articleAlam M, Bull AMJ, Thomas RD, et al., 2013,
A Clinical Device for Measuring Internal-External Rotational Laxity of the Knee
, AMERICAN JOURNAL OF SPORTS MEDICINE, Vol: 41, Pages: 87-94, ISSN: 0363-5465- Author Web Link
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- Citations: 14
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Journal articleAmis AA, 2013,
Biomechanics of high tibial osteotomy
, KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 21, Pages: 197-205, ISSN: 0942-2056- Author Web Link
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- Citations: 152
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Journal articleStoddard JE, Deehan DJ, Bull AMJ, et al., 2013,
The kinematics and stability of single-radius versus multi-radius femoral components related to Mid-range instability after TKA
, JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 31, Pages: 53-58, ISSN: 0736-0266- Author Web Link
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- Citations: 69
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Journal articleGregory T, Hansen U, Emery R, et al., 2012,
Total shoulder arthroplasty does not correct the orientation of the eroded glenoid
, ACTA ORTHOPAEDICA, Vol: 83, Pages: 529-535, ISSN: 1745-3674- Author Web Link
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- Citations: 19
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Journal articleStephen JM, Lumpaopong P, Deehan DJ, et al., 2012,
The Medial Patellofemoral Ligament Location of Femoral Attachment and Length Change Patterns Resulting From Anatomic and Nonanatomic Attachments
, AMERICAN JOURNAL OF SPORTS MEDICINE, Vol: 40, Pages: 1871-1879, ISSN: 0363-5465- Author Web Link
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- Citations: 121
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Journal articleGhosh KM, Merican AM, Iranpour F, et al., 2012,
Length-change patterns of the collateral ligaments after total knee arthroplasty
, KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 20, Pages: 1349-1356, ISSN: 0942-2056- Author Web Link
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- Citations: 35
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Journal articleJeffers JRT, Walter WL, 2012,
Ceramic-on-ceramic bearings in hip arthroplasty STATE OF THE ART AND THE FUTURE
, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 94B, Pages: 735-745, ISSN: 0301-620X- Author Web Link
- Open Access Link
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- Citations: 67
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Journal articleAmis AA, 2012,
The functions of the fibre bundles of the anterior cruciate ligament in anterior drawer, rotational laxity and the pivot shift
, KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 20, Pages: 613-620, ISSN: 0942-2056- Author Web Link
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- Citations: 78
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Journal articleJeffers JRT, 2012,
The role of biomechanics and engineering in total hip replacement. Why surgeons need technical help
, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE, Vol: 226, Pages: 947-954, ISSN: 0954-4119- Author Web Link
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- Citations: 2
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Journal articleAlam M, Bull AMJ, Thomas RD, et al., 2011,
Measurement of Rotational Laxity of the Knee In Vitro Comparison of Accuracy Between the Tibia, Overlying Skin, and Foot
, AMERICAN JOURNAL OF SPORTS MEDICINE, Vol: 39, Pages: 2575-2581, ISSN: 0363-5465- Author Web Link
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- Citations: 21
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Journal articleBaring TKA, Cashman PPM, Reilly P, et al., 2011,
Rotator cuff repair failure in vivo: a radiostereometric measurement study
, JOURNAL OF SHOULDER AND ELBOW SURGERY, Vol: 20, Pages: 1194-1199, ISSN: 1058-2746- Author Web Link
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- Citations: 24
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