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Displaying publications 21 - 28 of 28 in total

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Five- to 12-year follow-up of a hydroxyapatite-coated, cementless total knee replacement in young, active patients

Tai CC, Cross MJ

J Bone Joint Surg Br, 2006 Sep;88(9):1158-63.
PMID: 16943464

We carried out a prospective study of 118 hydroxyapatite-coated, cementless total knee replacements in patients who were = 55 years of age and who had primary (92; 78%) or post-traumatic (26; 22%) osteoarthritis. The mean period of follow-up was 7.9 years (5 to 12.5). The Knee Society clinical scores improved from a pre-operative mean of 98 (0 to 137) to a mean of 185 (135 to 200) at five years, and 173 (137 to 200) at ten years. There were two revisions of the tibial component because of aseptic loosening, and one case of polyethylene wear requiring further surgery. There was no osteolysis or progressive radiological loosening of any other component. At 12 years, the overall rate of implant survival was 97.5% (excluding exchange of spacer) and 92.1% (including exchange of spacer). Cementless total knee replacement can achieve excellent long-term results in young, active patients with osteoarthritis. In contrast to total hip replacement, polyethylene wear, osteolysis and loosening of the prosthesis were not major problems for these patients, although it is possible that this observation could change with longer periods of follow-up.

Matched MeSH terms: Prosthesis Failure
Leaflet extension in rheumatic mitral valve reconstruction

Dillon J, Yakub MA, Nordin MN, Pau KK, Krishna Moorthy PS

Eur J Cardiothorac Surg, 2013 Oct;44(4):682-9.
PMID: 23407161 DOI: 10.1093/ejcts/ezt035

Type IIIa mitral regurgitation (MR) due to rheumatic leaflet restriction often renders valve repair challenging and may predict a less successful repair. However, the utilization of leaflet mobilization and extension with the pericardium to increase the surface of coaptation may achieve satisfactory results. We reviewed our experience with leaflet extension in rheumatic mitral repair with emphasis on the technique and mid-term results.

Matched MeSH terms: Prosthesis Failure
Dislodgement of the MGuard Prime MicroNet™ During Primary PCI

Ismail MD, Han CK, Loch A

Cardiovasc Intervent Radiol, 2016 May;39(5):785-787.
PMID: 26757911 DOI: 10.1007/s00270-015-1290-1
Matched MeSH terms: Prosthesis Failure
Surgical and functional outcomes of cochlear implantation in post-lingual and cross-over patients: First 5-year review of the National Ministry of Health Malaysia cochlear implant programme

Philip Rajan D, Siti Sabzah MH, Zulkiflee S, Tengku Mohamed I, Kumareysh Vijay V, Iskandar H, et al.

Med J Malaysia, 2018 12;73(6):393-396.
PMID: 30647210

INTRODUCTION: There has been a paradigm shift in the management of acquired sensory neural deafness in the past 30years. This is due to the emergence of implantable hearing devices such as the cochlear implant. The objective of this study is to identify surgical and functional outcomes of post-lingual and cross-over patients implanted with a cochlear implant under the National Ministry of Heath Cochlear Implant (CI) Program between 2009-2013.
MATERIALS AND METHODS: We retrospectively reviewed all postlingual and cross-over recipients of cochlear implants under the National Ministry of Heath CI Programme from 2009 to 2013. The outcomes measured were surgical complications and functional outcome. Surgical complications were divided into major and minor complications. Functional outcomes were measured using Categorical Auditory Performances (CAP) scale.
RESULTS: A total of 41 post-lingual and 15 cross-over patients were implanted between 2009 and 2013. The age of implantees ranged from 3.6 years to 63.2 years old. There were two major complications (3.6%), one is a case of electrode migration at three months post implantation, and six months post second implantation. Another was a case of device failure at about one-year post implantation. Both patients were reimplanted in the same ear. There was no minor complication. The CAP score for both groups (overall) showed significant improvement with 96.4% achieved CAP score of five and above at 24 months after implantation (p<0.001). The CAP score showed marked improvement at the first 6 months post implantation and continued to improve with time in both groups.
CONCLUSION: The Malaysian National Ministry of Health Cochlear implant (CI) Program between 2009-2013 has been a successful programme with good surgical and functional outcomes among the post lingual and cross-over patients.

Matched MeSH terms: Prosthesis Failure
Fulltext Spontaneous dislocation of intraocular lens as a late complication of uncomplicated cataract surgery: a case series

Lam HH, Visvaraja S

Clin Exp Optom, 2012 Jan;95(1):99-102.
PMID: 21954950 DOI: 10.1111/j.1444-0938.2011.00640.x

Five patients having uncomplicated phacoemulsification were implanted with CT-Asphina 603P intraocular lenses into the capsular bag. After a few months, three of the patients had haptic flexion anterior to the optic despite minimal capsular fibrosis. One patient had spontaneous dislocation of the intraocular lens into the anterior chamber with only minimal capsular fibrosis. Another patient had one haptic dislocated out of the bag. Late intraocular lens dislocation is also seen in newly designed preloaded intraocular lenses despite the absence of significant capsular fibrosis. Haptic-optic junction design and intraocular lens material play important roles in such complication. A slightly large capsulorhexis might be a deterrent for implantation of this intraocular lens.

Matched MeSH terms: Prosthesis Failure
Revision total hip arthroplasty with metal on metal bearing for ceramic bearing fractures

Park KS, Chan CK, Kim SK, Li QS, Im CJ, Yoon TR

J Orthop Sci, 2019 May;24(3):452-457.
PMID: 30415823 DOI: 10.1016/j.jos.2018.10.016

BACKGROUND: Due to concern of potential metallosis caused by residual microscopic ceramic particles, metal-on-metal (MoM) bearing is deemed undesirable in revision total hip arthroplasty (THA) for ceramic bearing fracture. We determined whether MoM bearing is suitable to be used in revision THA for ceramic fractures and also evaluated whether this treatment increases serum iron levels compared with MoM bearing revision THA for polyethylene failure.
METHODS: Between 2006 and 2012, 22 patients underwent revision surgery using MoM bearing (28 mm femoral head in 18 hips and 32 mm in 4 hips) for ceramic bearing fracture and followed average 52.1 months. We assessed radiological parameter and functional outcome using Harris hip score (HHS) and WOMAC score. Also, serum cobalt (Co) and chromium (Cr) blood tests were performed and compared with the result obtained from age, sex- and follow-up duration-matched patients with MoM revision THA for failed polyethylene bearing.
RESULTS: The mean HHS improved from 60.6 preoperatively to 90.3 at final follow-up. There were no changes in cup position, progression of osteolytic lesions, and measurable wear of MoM bearing articulation at final follow-up radiographs. There was one case of recurrent dislocation after surgery, which was treated with greater trochanter distal advancement and one case of deep infection, which underwent two-stage revision. Mean serum Co level (1.7 vs. 1.4 μg/dl; p = 0.211) and Cr level (0.70 vs. 1.01 μg/dl; p = 0.327) showed no significant difference.
CONCLUSIONS: MoM articulation with liner cementation into the acetabular cup along with total synovectomy can be chosen in revision surgery for ceramic fracture with good midterm follow-up. However, the use of MoM bearing is indicated when the stem and metal shell can be retained and ceramic on ceramic or ceramic on polyethylene bearing cannot be selected. Also long-term outcome needs to be further evaluated.

Matched MeSH terms: Prosthesis Failure
Fulltext Design process of cementless femoral stem using a nonlinear three dimensional finite element analysis

Baharuddin MY, Salleh ShH, Zulkifly AH, Lee MH, Noor AM, A Harris AR, et al.

BMC Musculoskelet Disord, 2014;15:30.
PMID: 24484753 DOI: 10.1186/1471-2474-15-30

Minimal available information concerning hip morphology is the motivation for several researchers to study the difference between Asian and Western populations. Current use of a universal hip stem of variable size is not the best option for all femur types. This present study proposed a new design process of the cementless femoral stem using a three dimensional model which provided more information and accurate analysis compared to conventional methods.

Matched MeSH terms: Prosthesis Failure
Is rheumatic aetiology a predictor of poor outcome in the current era of mitral valve repair? Contemporary long-term results of mitral valve repair in rheumatic heart disease

Yakub MA, Dillon J, Krishna Moorthy PS, Pau KK, Nordin MN

Eur J Cardiothorac Surg, 2013 Oct;44(4):673-81.
PMID: 23447474 DOI: 10.1093/ejcts/ezt093

Contemporary experience with mitral valve (MV) repair in the rheumatic population is limited. We aimed to examine the long-term outcomes of rheumatic MV repair, to identify the predictors of durability and to compare the repair for rheumatic and degenerative MVs.

Matched MeSH terms: Prosthesis Failure