Hamid Rahmatullah Bin Abd Razak (original) (raw)

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Research paper thumbnail of Outcomes are favorable after arthroscopic treatment of osteochondritis dissecans of the talus

The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons

Arthroscopic treatment of osteochondritis dissecans (OCD) of the talus has resulted in outcomes a... more Arthroscopic treatment of osteochondritis dissecans (OCD) of the talus has resulted in outcomes as good as, or better than, those after arthrotomy. We noted a lack of prospective studies investigating the outcomes of arthroscopic treatment. As such, we conducted a prospective study investigating the functional outcomes, pain scores, patient satisfaction, and expectation scores of patients undergoing arthroscopic treatment of OCD of the talus, hypothesizing that these patients would have good outcomes and satisfaction. A total of 61 patients underwent arthroscopic chondroplasty, removal of loose bodies, and microfracture for OCD of the talus and completed ≥1 year of follow-up. We evaluated patients pre- and postoperatively at 6 and 12 months using the Ankle-Hindfoot score, visual analog scale for pain, and Medical Outcomes Study short-form 36 questionnaires. We also evaluated the patients' expectations and satisfaction. The mean Ankle-Hindfoot score improved significantly from 53...

Research paper thumbnail of Generalized ligamentous laxity may be a predisposing factor for musculoskeletal injuries

Journal of Science and Medicine in Sport, 2013

The aim of this study is to determine if generalized ligamentous laxity may be a predisposing fac... more The aim of this study is to determine if generalized ligamentous laxity may be a predisposing factor for musculoskeletal injuries in young males. We hypothesized that generalized ligamentous laxity would be more common in individuals with musculoskeletal injuries compared with controls. Prospective Age- and Gender-matched Case-Control Study examined generalized ligamentous laxity in 100 consecutive individuals aged 18-25 who reported with musculoskeletal injuries to a primary healthcare center in the military. The Beighton score was used to measure joint laxity, which was determined to be present by overall scores equal to or exceeding 4. The control group comprised 100 age- and gender-matched individuals without any musculoskeletal injuries or complaints. The prevalence of generalized ligamentous laxity was then compared between cases and controls. Subgroup analyses were also performed to evaluate the epidemiology of injury within the cases. This prospective case-control study examined generalized ligamentous laxity in 100 consecutive individuals aged 18-25 who reported with musculoskeletal injuries to a primary healthcare center in the military. The Beighton score was used to measure joint laxity, which was determined to be present by overall scores equal to or exceeding 4. The control group comprised 100 age- and gender-matched individuals without any musculoskeletal injuries or complaints. The prevalence of generalized ligamentous laxity was then compared between cases and controls. Generalized ligamentous laxity was present in 12% of the cases compared with 4% of controls Clearer to be presented as (P-value: 0.043). Individuals who presented with musculoskeletal injuries were 3.35 times more likely to have generalized ligamentous laxity as compared to controls. Lower limb injuries were more common than upper limb injuries amongst the cases. Generalized ligamentous laxity was more common in individuals who presented with a musculoskeletal injury. Hence, it may be a predisposing factor for musculoskeletal injuries.

Research paper thumbnail of Postoperative Range of Motion Does Not Correlate with Patient Reported Outcome Scores in Asians after Total Knee Arthroplasty

The Journal of Arthroplasty, 2014

Activities in Asian cultures require greater knee flexion. However, this study hypothesized that ... more Activities in Asian cultures require greater knee flexion. However, this study hypothesized that post-operative range of motion (ROM) does not correlate with patient reported outcome scores at 2years. 292 TKAs were evaluated at a public hospital in Singapore from January 2006 to May 2009. The relationship between ROM and outcome scores was examined using a multiple linear regression model with Generalized Estimating Equation (GEE) allowing adjustment for confounders and repeated TKAs within a patient. Analysis did not yield statistically significant results when patients' post-op ROM was correlated with outcome scores at 2years. Lack of post op ROM does not translate into poorer outcome scores and dissatisfaction. Doctors can now counsel patients who are concerned about a lack of ROM after TKA.

Research paper thumbnail of Incidence of Clinically Significant Venous Thromboembolic Events in Asian Patients Undergoing Total Knee Arthroplasty Without Anticoagulation

The Journal of Arthroplasty, 2012

This study aimed to evaluate the incidence of clinically significant venous thromboembolic events... more This study aimed to evaluate the incidence of clinically significant venous thromboembolic events (VTE) in Asian patients undergoing total knee arthroplasty (TKA) without anticoagulation. All patients who underwent TKA by a single surgeon from 2006 to 2010 in Singapore General Hospital were reviewed. Only symptomatic patients were referred for ultrasonography. Of the 531 patients reviewed, 3 patients developed symptoms of deep vein thrombosis with subsequent ultrasonographic confirmation, whereas 1 patient developed fatal pulmonary embolism without any clinical or radiologic evidence of deep vein thrombosis. Hence, the incidence of clinically significant VTE was 0.75%. Given the low incidence of clinically significant VTE, there is a need to review the current practice of routine chemoprophylaxis in Asian patients undergoing TKA. Keywords: venous thromboembolism, total knee arthroplasty, anticoagulation.

Research paper thumbnail of Surgically treated cervical myelopathy: a functional outcome comparison study between multilevel anterior cervical decompression fusion with instrumentation and posterior laminoplasty

The Spine Journal, 2013

Multilevel cervical myelopathy can be treated with anterior cervical discectomy and fusion (ACDF)... more Multilevel cervical myelopathy can be treated with anterior cervical discectomy and fusion (ACDF) or corpectomy via the anterior approach and laminoplasty via the posterior approach. Till date, there is no proven superior approach. To elucidate any potential advantage of one approach over the other with regard to clinical midterm outcomes in this study. A prospective, 2-year follow-up of patients with cervical myelopathy treated with multilevel anterior cervical decompression fusion and plating and posterior laminoplasty. In total, 116 patients were studied. Sixty-four patients underwent ACDF two levels and above or anterior cervical corpectomy and fusion one level and above. Fifty-two patients underwent posterior cervical surgery (laminoplasty C3-C6 and C3-C7). Self-report measures: Japan Orthopedic Association (JOA) score, JOA recovery rate, visual analog scale for neck pain (VASNP), neck disability index (NDI), and American Academy of Orthopaedic Surgeons (AAOS) neurogenic symptom score (AAOS-NSS). Physiologic measures: range of motion (ROM) flexion and extension of neck. Functional measures: short-form 36 (SF-36) score comprising physical functioning, physical role function, bodily pain, general health, vitality, social role function, emotional role function, and mental health scales. Comparison of the JOA scores, JOA recovery rates, NDI scores, SF-36 scores, VASNP, and ROM preoperatively to 2 years. Chi-square and two-sided Student t tests were used to analyze the variables. Posterior surgery took an hour shorter (p<.05) and had better improvement in JOA scores at early follow-up of 6 months (p=.025). Anterior surgery group had better improvement of NDI scores at early follow-up of 6 months (p=.024) and was associated with less blood loss intraoperatively compared with posterior surgery. There was no statistical difference between the two groups for JOA scores, JOA recovery rates, SF-36 quality-of-life scores, NDI, AAOS-NSS, VAS neck pain, and ROM at 2 years. Complications were higher for anterior surgery group: two hematoma postoperation, one vocal cord paresis, and one new onset C6/C7 dermatome numbness versus one dura leak in posterior surgery group. Our study showed that patients with multilevel disease treated with laminoplasty do well and compare favorably with patients treated with an anterior approach. Notably, posterior surgery was associated with shorter operating time, better improvement in JOA scores at 6 months, and a tendency toward lesser complications. Posterior surgery was not associated with increased neck disability and neck pain at 2 years. Anterior surgery had better NDI improvement at early follow-up. There is a need for a larger study that is prospectively randomized with long-term follow-up before we can confidently advocate one approach over the other in the management of cervical myelopathy.

Research paper thumbnail of Outcomes are favorable after arthroscopic treatment of osteochondritis dissecans of the talus

The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons

Arthroscopic treatment of osteochondritis dissecans (OCD) of the talus has resulted in outcomes a... more Arthroscopic treatment of osteochondritis dissecans (OCD) of the talus has resulted in outcomes as good as, or better than, those after arthrotomy. We noted a lack of prospective studies investigating the outcomes of arthroscopic treatment. As such, we conducted a prospective study investigating the functional outcomes, pain scores, patient satisfaction, and expectation scores of patients undergoing arthroscopic treatment of OCD of the talus, hypothesizing that these patients would have good outcomes and satisfaction. A total of 61 patients underwent arthroscopic chondroplasty, removal of loose bodies, and microfracture for OCD of the talus and completed ≥1 year of follow-up. We evaluated patients pre- and postoperatively at 6 and 12 months using the Ankle-Hindfoot score, visual analog scale for pain, and Medical Outcomes Study short-form 36 questionnaires. We also evaluated the patients' expectations and satisfaction. The mean Ankle-Hindfoot score improved significantly from 53...

Research paper thumbnail of Generalized ligamentous laxity may be a predisposing factor for musculoskeletal injuries

Journal of Science and Medicine in Sport, 2013

The aim of this study is to determine if generalized ligamentous laxity may be a predisposing fac... more The aim of this study is to determine if generalized ligamentous laxity may be a predisposing factor for musculoskeletal injuries in young males. We hypothesized that generalized ligamentous laxity would be more common in individuals with musculoskeletal injuries compared with controls. Prospective Age- and Gender-matched Case-Control Study examined generalized ligamentous laxity in 100 consecutive individuals aged 18-25 who reported with musculoskeletal injuries to a primary healthcare center in the military. The Beighton score was used to measure joint laxity, which was determined to be present by overall scores equal to or exceeding 4. The control group comprised 100 age- and gender-matched individuals without any musculoskeletal injuries or complaints. The prevalence of generalized ligamentous laxity was then compared between cases and controls. Subgroup analyses were also performed to evaluate the epidemiology of injury within the cases. This prospective case-control study examined generalized ligamentous laxity in 100 consecutive individuals aged 18-25 who reported with musculoskeletal injuries to a primary healthcare center in the military. The Beighton score was used to measure joint laxity, which was determined to be present by overall scores equal to or exceeding 4. The control group comprised 100 age- and gender-matched individuals without any musculoskeletal injuries or complaints. The prevalence of generalized ligamentous laxity was then compared between cases and controls. Generalized ligamentous laxity was present in 12% of the cases compared with 4% of controls Clearer to be presented as (P-value: 0.043). Individuals who presented with musculoskeletal injuries were 3.35 times more likely to have generalized ligamentous laxity as compared to controls. Lower limb injuries were more common than upper limb injuries amongst the cases. Generalized ligamentous laxity was more common in individuals who presented with a musculoskeletal injury. Hence, it may be a predisposing factor for musculoskeletal injuries.

Research paper thumbnail of Postoperative Range of Motion Does Not Correlate with Patient Reported Outcome Scores in Asians after Total Knee Arthroplasty

The Journal of Arthroplasty, 2014

Activities in Asian cultures require greater knee flexion. However, this study hypothesized that ... more Activities in Asian cultures require greater knee flexion. However, this study hypothesized that post-operative range of motion (ROM) does not correlate with patient reported outcome scores at 2years. 292 TKAs were evaluated at a public hospital in Singapore from January 2006 to May 2009. The relationship between ROM and outcome scores was examined using a multiple linear regression model with Generalized Estimating Equation (GEE) allowing adjustment for confounders and repeated TKAs within a patient. Analysis did not yield statistically significant results when patients' post-op ROM was correlated with outcome scores at 2years. Lack of post op ROM does not translate into poorer outcome scores and dissatisfaction. Doctors can now counsel patients who are concerned about a lack of ROM after TKA.

Research paper thumbnail of Incidence of Clinically Significant Venous Thromboembolic Events in Asian Patients Undergoing Total Knee Arthroplasty Without Anticoagulation

The Journal of Arthroplasty, 2012

This study aimed to evaluate the incidence of clinically significant venous thromboembolic events... more This study aimed to evaluate the incidence of clinically significant venous thromboembolic events (VTE) in Asian patients undergoing total knee arthroplasty (TKA) without anticoagulation. All patients who underwent TKA by a single surgeon from 2006 to 2010 in Singapore General Hospital were reviewed. Only symptomatic patients were referred for ultrasonography. Of the 531 patients reviewed, 3 patients developed symptoms of deep vein thrombosis with subsequent ultrasonographic confirmation, whereas 1 patient developed fatal pulmonary embolism without any clinical or radiologic evidence of deep vein thrombosis. Hence, the incidence of clinically significant VTE was 0.75%. Given the low incidence of clinically significant VTE, there is a need to review the current practice of routine chemoprophylaxis in Asian patients undergoing TKA. Keywords: venous thromboembolism, total knee arthroplasty, anticoagulation.

Research paper thumbnail of Surgically treated cervical myelopathy: a functional outcome comparison study between multilevel anterior cervical decompression fusion with instrumentation and posterior laminoplasty

The Spine Journal, 2013

Multilevel cervical myelopathy can be treated with anterior cervical discectomy and fusion (ACDF)... more Multilevel cervical myelopathy can be treated with anterior cervical discectomy and fusion (ACDF) or corpectomy via the anterior approach and laminoplasty via the posterior approach. Till date, there is no proven superior approach. To elucidate any potential advantage of one approach over the other with regard to clinical midterm outcomes in this study. A prospective, 2-year follow-up of patients with cervical myelopathy treated with multilevel anterior cervical decompression fusion and plating and posterior laminoplasty. In total, 116 patients were studied. Sixty-four patients underwent ACDF two levels and above or anterior cervical corpectomy and fusion one level and above. Fifty-two patients underwent posterior cervical surgery (laminoplasty C3-C6 and C3-C7). Self-report measures: Japan Orthopedic Association (JOA) score, JOA recovery rate, visual analog scale for neck pain (VASNP), neck disability index (NDI), and American Academy of Orthopaedic Surgeons (AAOS) neurogenic symptom score (AAOS-NSS). Physiologic measures: range of motion (ROM) flexion and extension of neck. Functional measures: short-form 36 (SF-36) score comprising physical functioning, physical role function, bodily pain, general health, vitality, social role function, emotional role function, and mental health scales. Comparison of the JOA scores, JOA recovery rates, NDI scores, SF-36 scores, VASNP, and ROM preoperatively to 2 years. Chi-square and two-sided Student t tests were used to analyze the variables. Posterior surgery took an hour shorter (p<.05) and had better improvement in JOA scores at early follow-up of 6 months (p=.025). Anterior surgery group had better improvement of NDI scores at early follow-up of 6 months (p=.024) and was associated with less blood loss intraoperatively compared with posterior surgery. There was no statistical difference between the two groups for JOA scores, JOA recovery rates, SF-36 quality-of-life scores, NDI, AAOS-NSS, VAS neck pain, and ROM at 2 years. Complications were higher for anterior surgery group: two hematoma postoperation, one vocal cord paresis, and one new onset C6/C7 dermatome numbness versus one dura leak in posterior surgery group. Our study showed that patients with multilevel disease treated with laminoplasty do well and compare favorably with patients treated with an anterior approach. Notably, posterior surgery was associated with shorter operating time, better improvement in JOA scores at 6 months, and a tendency toward lesser complications. Posterior surgery was not associated with increased neck disability and neck pain at 2 years. Anterior surgery had better NDI improvement at early follow-up. There is a need for a larger study that is prospectively randomized with long-term follow-up before we can confidently advocate one approach over the other in the management of cervical myelopathy.