MyMedR

The Relationship of Transepicondylar Width with the Distal and Posterior Femoral Condyles and Its Clinical Implications: A Three-Dimensional Study

Lee M, Ho JPY, Chen JY, Ng CK, Yeo SJ, Merican AM

J Knee Surg, 2022 Feb;35(3):280-287.

PMID: 32629512 DOI: 10.1055/s-0040-1713733

BACKGROUND: Restoration of the anatomical joint line, while important for clinical outcomes, is difficult to achieve in revision total knee arthroplasty (rTKA) due to distal femoral bone loss. The objective of this study was to determine a reliable method of restoring the anatomical joint line and posterior condylar offset in the setting of rTKA based on three-dimensional (3D) reconstruction of computed tomography (CT) images of the distal femur.

METHODS: CT scans of 50 lower limbs were analyzed. Key anatomical landmarks such as the medial epicondyle (ME), lateral epicondyle, and transepicondylar width (TEW) were determined on 3D models constructed from the CT images. Best-fit planes placed on the most distal and posterior loci of points on the femoral condyles were used to define the distal and posterior joint lines, respectively. Statistical analysis was performed to determine the relationships between the anatomical landmarks and the distal and posterior joint lines.

RESULTS: There was a strong correlation between the distance from the ME to the distal joint line of the medial condyle (MEDC) and the distance from the ME to the posterior joint line of the medial condyle (MEPC) (p

Fulltext Psychosis induced by cefuroxime and metronidazole

Zahiruddin O, Shanooha M, Mohd Azhar MY

Med J Malaysia, 2014 Feb;69(1):33-4.

PMID: 24814627 MyJurnal

We report a case 35-year-old lady who developed acute psychosis following administration of cefuroxime and metronidazole. Earliest mood changes occurred on the second day of antibiotics therapy. She developed hallucinations, delusions and bizarre behavior 1 day after the completion of the antibiotic therapy. All the relevant investigations including CT brain were normal. The psychosis resolved completely within 5 days of antipsychotic treatment.

Fulltext Quality of life among patients with hematological cancer in a Malaysian hospital

Priscilla D, Hamidin A, Azhar MZ, Noorjan KO, Salmiah MS, Bahariah K

Med J Malaysia, 2011 Jun;66(2):117-20.

PMID: 22106690 MyJurnal

The aim of this study was to determine the prevalence of symptoms and problems in hospitalized hematological cancer patients. A cross-sectional design was carried out with 105 respondents in Ampang hospital in Kuala Lumpur. The European Organization for Research and Treatment of Cancer Quality Of Life questionnaire (EORTC QLQ-C30) was used. Patients with a minimum response of "a little" were defined as having a symptom/problem while patients with a response of "quite a bit" were classified as having a "severe symptom/problem". The four most prevalent symptoms/problems identified were fatigue, financial difficulties, reduced role function and reduced social function. Multiple myeloma patients (MM) were identified as having the most symptoms/problems.

Fulltext Psychological stress and treatment--research issues

Azhar MZ

Med J Malaysia, 2004 Jun;59(2):143-5.

PMID: 15559161

The Community Follow-up Project (CFUP)

Mohd Sidik S, Azhar MZ, Mohd Yunus A, Azlan Hamzah SA

Med J Malaysia, 2005 Aug;60 Suppl D:54-7.

PMID: 16315625

The Community Follow-up Project (CFUP) is a project where medical students choose a hospital in-ward patient during their clinical ward-based attachments and follow-up this patient's progress after discharge from the hospital. The students do a series of home visits and also accompany their patients for some of their follow-ups at the hospital, government clinics, general practitioners' clinics and even to the palliative care or social welfare centres. The students assess the physical, psychological and social impact of the illness on the patient, family and community. By following their patients from the time their patients were in the hospital and back to their homes and community, the students are able to understand in depth the problems faced by patients, the importance of communication skills in educating patients on their illness and the importance of good communication between primary, secondary and tertiary care.

Future needs and wants in medical education--the UPM experience

Azhar MZ

Med J Malaysia, 2005 Aug;60 Suppl D:24-7.

PMID: 16315619

Medical schools have existed in Malaysia for a very long time. The majority of practicing doctors has trained locally. From the early nineteen sixties when the first medical school was established to the current 7 public medical faculties, the standards of local trained doctors have always been exemplary. Now with more need for doctors to serve the country and the mushrooming of medical schools, the question of needs and wants of future medical schools and medical education need to be addressed. In this paper I will try to highlight what we in Universiti Putra Malaysia have been working on to improve the Medical and Health Sciences faculty to achieve greater heights to reach the future in the shortest possible time.

Fulltext Comparison of nerve graft and artificial conduits for bridging nerve defects

Azhar MM, Sara TA

Med J Malaysia, 2004 Dec;59(5):578-84.

PMID: 15889558

A study of nerve regeneration through a 1cm defect in the peroneal component of the sciatic nerve was performed on sixteen rabbits. Either silicone or polytetrafluoroethylene (PTFE) tubes or nerve graft were used to bridge the defect and the opposite limb was not operated upon. The rabbits that underwent nerve grafting had favourable findings. In the PTFE group, a nerve-like structure was seen at the former gap site and histology confirmed viable axons within the tubes and distal to the repair site. In the silicone tube group, there were no myelinated axons demonstrated. The axonal count for the grafted nerves and the nerves repaired with PTFE tube are on average 80.4% and 38.2% of that of the unoperated nerve, respectively. On average, the percentage anterior compartment muscle weight (expressed as a percentage of the unoperated limb) for the silicone, PTFE and nerve graft groups are 42.3%, 42.1%, and 72.7% respectively. The results show that although, PTFE conduits can bridge a nerve defect of 1cm, nerve grafting provides a superior and more predictable outcome.

The growing importance of mental health: are medical curricula responding?

Azhar MZ

Med J Malaysia, 2002 Dec;57 Suppl E:34-6.

PMID: 12733191

Mental health is becoming an important issue. Several local and international studies have proven that the incidence of mental illness is on the rise. Doctors have also been able to make more accurate diagnoses and treat mental disorders more reliably with the aid of recent research and newer drugs. As such it is necessary for the medical curricula to respond to this shift. Medical students must now be exposed to new psychiatric disorders and ways of managing them. The time spent in psychiatry and the mode of teaching must also be revised and modified to the current needs of patients.

Fulltext Comparison of risperidone and other neuroleptics in the management of chronic schizophrenia using cognitive therapy

Azhar MZ

Med J Malaysia, 2000 Mar;55(1):7-13.

PMID: 11072484

A number of psychological approaches to alleviating psychotic symptoms have been reported in the literature. The latest technique among them is cognitive therapy (CT). This paper describes an open trial that makes use of cognitive psychotherapy to treat chronic drug resistant delusions (more than 2 years duration) in 20 patients with schizophrenia. The positive response of all patients with the absence of symptom replacement and maintenance of response at 3 months follow-up, seem to imply that this technique is useful and more effort needs to be invested into this new area of psychotherapy for psychosis. This paper also shows that those patients on risperidone maintenance respond better to CT than those on other neuroleptics.

Fulltext Comparison of Fluvoxamine alone, Fluvoxamine and cognitive psychotherapy and psychotherapy alone in the treatment of panic disorder in Kelantan--implications for management by family doctors

Azhar MZ

Med J Malaysia, 2000 Dec;55(4):402-8.

PMID: 11221150

This paper reports the result of a brief therapy attempt at treating panic in a busy outpatient psychiatric clinic. The patients were cases of panic referred from the various outpatient clinics within the hospital complex. The patients were divided into three groups at random using one of three modalities of treatment, i.e. cognitive behaviour therapy (CBT), CBT and Fluvoxamine (FVX), and FVX alone. The therapy was aimed for a maximum of nine sessions after which the patients were to be discharged. There were 14 patients in each group. The results show that all the groups were similar in the severity and scores pre treatment but after the different types of treatment there was a significant difference among them. The FVX alone group, showed significant improvement from the pretreatment levels but did not show as much improvement as the other groups and the mean score was only 9.07 after nine sessions. The best group was the CBT in combination with FVX. This indicates that the best way to treat panic is to combine drug treatment and psychological treatment. It is also shown from the study that the combination group requires less FVX than the FVX alone group. This finding has implications for the treatment of panic at the family physician clinic.

Study site: Psychiatric clinic, Hospital Universiti Sains Malaysia

Fulltext Phenomenological differences of hallucinations between schizophrenic patients in Penang & Kelantan

Azhar MZ, Varma SL, Hakim HR

Med J Malaysia, 1993 Jun;48(2):146-52.

PMID: 8350789

Two hundred and seventy patients with schizophrenia (104 patients in Kelantan and 166 patients in Penang) were interviewed using the Present State Examination to elicit the differences in the phenomenology of their hallucinations. The results indicate that there are significant differences in the phenomenology of hallucinations between the Malays of Penang and Kelantan and also among some Chinese patients. These findings indicate that culture does affect the phenomenology of schizophrenia, even among people of the same race but of different regions.

Fulltext Deaths in visceral leishmaniasis (Kala-azar) during treatment

Ahasan HA, Chowdhury MA, Azhar MA, Rafiqueuddin AK, Azad KA

Med J Malaysia, 1996 Mar;51(1):29-32.

PMID: 10967976

Twenty-seven out of five hundred and fifty three patients hospitalized for visceral leishmaniasis (Kala-azar) died during treatment with sodium antimony gluconate. Data from these patients were evaluated to find out the cause of death. Eight patients had associated diseases such as pulmonary tuberculosis (3), severe malnutrition (1), acute gastroenteritis (1), spleenic infarction (1), acute renal failure (1) and atrial septal defect (1) which could be attributed to death. Twelve patients developed spontaneous haemorrhages from nose, gums and gastrointestinal tract and died, despite of adequate supportive measures. Seven other patients who were improving slowly with antimony therapy died unexpectedly. Though, cause of death could be explained in some patients with associated disease conditions, it could not be explained in others as significant clinical manifestations, haematological, biochemical and electrocardiographic alterations were not evident prior to death. Our impression is that mortality in Kala-azar patients during standard antimonial therapy is more related to the drug rather than the disease process.

Fulltext Psychiatric symptomatology in a primary health setting in Malaysia

Varma SL, Azhar MZ

Med J Malaysia, 1995 Mar;50(1):11-6.

PMID: 7752963

This study was conducted to find out the psychiatric symptomatology in the patients and their families attending a primary health care facility. The most frequent symptoms found were of depression (13.2%), followed by hypochondriacal symptoms (8.2%), anxiety symptoms (6.1%) and psychotic symptoms. A large proportion (21.5%) of children had psychiatric symptoms. The common symptoms include enuresis, hostility, tantrums, problems of conduct and destructiveness. Surprisingly, concern for these symptoms was lacking in both the patient and their family members.

Fulltext Experience of radioactive needle implants in the Institute of Radiotherapy Hospital Kuala Lumpur

Lim GC, Azhar MT

Med J Malaysia, 1997 Mar;52(1):33-7.

PMID: 10968051

This retrospective study of radioactive needle implants at the Institute of Radiotherapy and Oncology, Kuala Lumpur Hospital serves as an audit of our practice as well as a demonstration of the usefulness of this technique of brachytherapy. A variety of tumour sites were implanted, of which over two-thirds involved the tongue and buccal mucosa. Although most of the implants were carried out with radical intent, one-tenth of these implants were performed for palliation. Radiotherapy techniques employed are described. The crude survival ranged from 1 month to 109 months while the disease free interval ranged from 0 months to 102 months.

Fulltext Profile of in-patient suicides in two hospitals in Malaysia

Zain AM

Med J Malaysia, 1991 Jun;46(2):171-6.

PMID: 1839422

A study of completed in-patient suicides at the University Hospital Kuala Lumpur (UHKL) and Hospital Bahagia Ulu Kinta (HBUK) between 1st January 1967 to 31st December 1987 were conducted. Records of completed in-patient suicides during the period were exhaustively studied. Only 18 cases were from UHKL and 23 cases were from HBUK. It was found that the suicide patients were mainly young Chinese males from the lower socio economic group. The main reasons for suicide were interpersonal conflicts and physical illness. Alcohol was not an important factor unlike patients in the West.. Suicidal intent was also important. Many of the suicides were committed during the early hours of the morning and they usually occurred at inaccessible places. The method was strongly influenced by availability. To the best knowledge of the author, this is the first study of in-patient suicides in Malaysia.

Fulltext Femoral articular geometry and patellofemoral stability

Iranpour F, Merican AM, Teo SH, Cobb JP, Amis AA

Knee, 2017 Jun;24(3):555-563.

PMID: 28330756 DOI: 10.1016/j.knee.2017.01.011

BACKGROUND: Patellofemoral instability is a major cause of anterior knee pain. The aim of this study was to examine how the medial and lateral stability of the patellofemoral joint in the normal knee changes with knee flexion and measure its relationship to differences in femoral trochlear geometry.

METHODS: Twelve fresh-frozen cadaveric knees were used. Five components of the quadriceps and the iliotibial band were loaded physiologically with 175N and 30N, respectively. The force required to displace the patella 10mm laterally and medially at 0°, 20°, 30°, 60° and 90° knee flexion was measured. Patellofemoral contact points at these knee flexion angles were marked. The trochlea cartilage geometry at these flexion angles was visualized by Computed Tomography imaging of the femora in air with no overlying tissue. The sulcus, medial and lateral facet angles were measured. The facet angles were measured relative to the posterior condylar datum.

RESULTS: The lateral facet slope decreased progressively with flexion from 23°±3° (mean±S.D.) at 0° to 17±5° at 90°. While the medial facet angle increased progressively from 8°±8° to 36°±9° between 0° and 90°. Patellar lateral stability varied from 96±22N at 0°, to 77±23N at 20°, then to 101±27N at 90° knee flexion. Medial stability varied from 74±20N at 0° to 170±21N at 90°. There were significant correlations between the sulcus angle and the medial facet angle with medial stability (r=0.78, p<0.0001).

CONCLUSIONS: These results provide objective evidence relating the changes of femoral profile geometry with knee flexion to patellofemoral stability.

First series of Exeter small stem primary total hip arthroplasty minimum 5 years of follow-up

Tai CC, Nam HY, Abbas AA, Merican AM, Choon SK

J Arthroplasty, 2009 Dec;24(8):1200-4.

PMID: 19682839 DOI: 10.1016/j.arth.2009.07.001

We carried out a prospective study of 47 Exeter (Stryker Inc, Warsaw, Ind) small stem total hip arthroplasty in 42 patients with an average age of 58 years and a mean follow-up of 8.5 years. The Oxford hip score improved from a preoperative mean of 47 to 17 at last follow-up. More than 87% patients had excellent or good Harris hip scores, and 90% were able to walk with little or no pain. Stem subsidence within the cement mantle was observed in 26% of cases, and none showed evidence of aseptic loosening or implant failure. Two stems were removed due to infection. The survival rate of this implant was 95.7% at 10 years. This first series of Exeter small stem showed excellent medium-term results, comparable to its larger counterparts.

Early clinical and radiographic analysis of the Fitmore cup

Merican AM, Randle R

J Arthroplasty, 2006 Sep;21(6):846-51.

PMID: 16950037

The Fitmore titanium mesh cementless acetabular component in 115 hip arthroplasties was reviewed at an average of 33 months of follow-up. None were revised nor had infection. One hip dislocated 4 years postoperatively. Two femoral components were revised. The average Harris Hip Score at the last follow-up was 90 points. In the 96 sets of radiographs available, there was no loosening or new radiolucency. One hip had nonprogressive osteolysis adjacent to a screw. This press-fit cup has its polar region flattened and is rim loading. Noncontact (gaps) at the acetabular floor is expected and is not critical for fixation. In all but 6 hips, these gaps filled. In 5 hips, a minimal gap (

Three-Dimensional Computed Tomography Analysis of the Posterior Tibial Slope in 100 Knees

Ho JPY, Merican AM, Hashim MS, Abbas AA, Chan CK, Mohamad JA

J Arthroplasty, 2017 10;32(10):3176-3183.

PMID: 28579444 DOI: 10.1016/j.arth.2017.04.060

BACKGROUND: The posterior tibial slope (PTS) is an important consideration in knee arthroplasty. However, there is still no consensus for the optimal slope. The objectives of this study were (1) to reliably determine the native PTS in this population using 3-dimensional computed tomography scans and (2) to determine the normal reference range for PTS in this population.

METHODS: One hundred computed tomography scans of disease-free knees were analyzed. A 3-dimensional reconstructed image of the tibia was generated and aligned to its anatomic axis in the coronal and sagittal planes. The tibia was then rotationally aligned to the tibial plateau (tibial centroid axis) and PTS was measured from best-fit planes on the surface of the proximal tibia and individually for the medial and lateral plateaus. This was then repeated with the tibia rotationally aligned to the ankle (transmalleolar axis).

RESULTS: When rotationally aligned to the tibial plateau, the mean PTS, medial PTS, and lateral PTS were 11.2° ± 3.0 (range, 4.7°-17.7°), 11.3° ± 3.2 (range, 2.7°-19.7°), and 10.9° ± 3.7 (range, 3.5°-19.4°), respectively. When rotationally aligned to the ankle, the mean PTS, medial PTS, and lateral PTS were 11.4° ± 3.0 (range, 5.3°-19.3°), 13.9° ± 3.7 (range, 3.1°-24.4°), and 9.7° ± 3.6 (range, 0.8°-17.7°), respectively.

CONCLUSION: The PTS in the normal Asian knee is on average 11° (mean) with a reference range of 5°-17° (mean ± 2 standard deviation). This has implications to surgery and implant design.

Distal Femoral Rotation Correlates With Proximal Tibial Joint Line Obliquity: A Consideration for Kinematic Total Knee Arthroplasty

Ng CK, Chen JY, Yeh JZY, Ho JPY, Merican AM, Yeo SJ

J Arthroplasty, 2018 06;33(6):1936-1944.

PMID: 29395720 DOI: 10.1016/j.arth.2017.12.025

BACKGROUND: We hypothesized that there is a correlation between the distal femoral rotation and proximal tibial joint line obliquity in nonarthritic knees. This has significance for kinematic knee arthroplasty, in which the target knee alignment desired approximates the knee before disease.

METHODS: Fifty computed tomography scans of nonarthritic knees were evaluated using three-dimensional image processing software. Four distal femoral rotational axes were determined in the axial plane: the transepicondylar axis (TEA), transcondylar axis (TCA), posterior condylar axis (PCA), and a line perpendicular to Whiteside's anterior-posterior axis. Then, angles were measured relative to the TEA. Tibial joint line obliquity was measured as the angle between the proximal tibial plane and a line perpendicular to the axis of the tibia.

RESULTS: There was a strong positive correlation between PCA-TEA and tibial joint line obliquity (r = 0.68, P < .001) as well as TCA-TEA and tibial joint line obliquity (r = 0.69, P < .001). In addition, the tibial joint line obliquity and TCA-TEA angles were similar, 3.7° ± 2.2° (mean ± standard deviation) and 3.5° ± 1.7°, respectively (mean difference, 0.2° ± 0.2°; P = .369).

CONCLUSION: Both PCA-TEA and TCA-TEA strongly correlated with proximal tibial joint line obliquity indicating a relationship between distal femoral rotational geometry and proximal tibial inclination. These findings could imply that the native knee in flexion attempts to balance the collateral ligaments toward a rectangular flexion space. A higher tibial varus inclination is matched with a more internally rotated distal femur relative to the TEA.

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