Effects of Pulsed Ultrasound with Low-Intensity on Recovery of Physical Impairments After Total Knee Arthroplasty: A Preliminary Quasi-Experimental Study

@#Introduction: Total knee arthroplasty (TKA) commonly cause physical impairments, which necessitate physiotherapy post-operatively. Low-intensity pulsed ultrasound is an adjuvant treatment to conventional physiotherapy; however, its effects on TKA recovery require further investigation. The study aimed to ascertain the outcome of adding low-intensity pulsed ultrasound therapy into conventional physiotherapy on recovery from physical impairments after TKA. Methods: This assessor-blinded quasi-experimental study was conducted in a tertiary medical centre in Central Malaysia. Patients with TKA due to grade III and IV knee osteoarthritis (Kellgren-Lawrence grading system) were alternately allocated into either an experimental group (n=10) or a control group (n=10). Other than low-intensity pulsed ultrasound as received by the experimental group’s participants, the two groups received the same amount and content of conventional physiotherapy. Participants’ pain, knee swelling, active knee flexion range, and quadriceps strength were assessed at baseline, week 1 of the intervention, and the 1-week follow-up. The two interventions’ effects were analysed using a mixed model ANOVA. Results: The pain score and knee swelling decreased (P<0.05), while the knee flexion range and quadriceps strength increased significantly (P<0.001) after both interventions. The experimental group had a significantly lower pain score [3.07(2.18) at visual analogue scale] and a greater active knee flexion range [80.48(26.42) degrees] compared to the control group [pain score=4.29(1.54); knee flexion=67.00(25.15) degrees] following the interventions. There were no significant interaction effects for all outcomes. Conclusion: The combination of low-intensity pulsed ultrasound into a conventional physiotherapy program demonstrated more promising results in pain alleviation and knee motion recovery following TKA.

Matrix Production in Chondrocytes Transfected with Sex Determining Region Y-Box 9 and Telomerase Reverse Transcriptase Genes: An In Vitro Evaluation from Monolayer Culture to Three-Dimensional Culture

BACKGROUND: This study aimed to observe the cartilaginous matrix production in SRY (sex determining region Y)-box 9 (SOX9)- and/or telomerase reverse transcriptase (TERT)-transfected chondrocytes from monolayer to three-dimensional (3D) culture.

Predictors of major lower limb amputation among type II diabetic patients admitted for diabetic foot problems

<p><b>INTRODUCTION</b>Diabetes mellitus (DM) is the most common cause of amputations in Malaysia. This study aimed to identify the predictive factors for major lower limb amputation among patients with type 2 DM (T2DM) who were admitted to a hospital, in order to reduce its likelihood.</p><p><b>METHODS</b>This cross-sectional study involved 218 patients with T2DM who were admitted to Hospital Tengku Ampuan Afzan, Kuantan, Malaysia, for diabetic foot problems from June 2011 to July 2012. A form was developed to document the patients' profiles, comorbidities, complications, investigations, treatment and clinical outcomes. The predictors for major lower limb amputations were determined using univariate and stepwise logistic regression analysis.</p><p><b>RESULTS</b>A total of 31 patients underwent major lower limb amputations (25 transtibial, 6 transfemoral). The following factors were found to be associated with the incidence of major lower limb amputations: T2DM duration ≥ 10 years, diabetic neuropathy, diabetic nephropathy, presentation with gangrene, diabetic foot conditions of Wagner grade 4 or 5, and necrotising fasciitis. Patients who underwent major amputations had significantly lower haemoglobin and albumin levels, and higher total white blood cell counts, erythrocyte sedimentation rates, and C-reactive protein, urea and creatinine levels. However, only T2DM duration ≥ 10 years, positive bacterial culture and albumin levels were significant on stepwise logistic regression analysis.</p><p><b>CONCLUSION</b>T2DM duration ≥ 10 years, positive bacterial culture and low albumin levels were found to be significant predictive factors for major lower limb amputation among patients with T2DM admitted for diabetic foot problems.</p>