The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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v.26
no.1
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pp.1-8
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2020
Background: The aim of this study was to conduct an Otago exercise program with total knee replacement patient (TKR) in a clinical setting and ascertain its effects on balance, walking ability and falls efficacy. Methods: The participating subjects were 30 people who had been diagnosed with TKR. They were assigned to two groups (Exp; Otago exercise and general physical therapy, n=15; Con; balance exercise and general physical therapy, n=15), and the exercises were conducted for three sessions per week for four weeks. The main balance outcomes were evaluated using the timed up and go test (TUG), while walking ability was evaluated using the 10m walk test (10MWT), direction change ability was measured using the figure 8 of walk test (F8WT), and the decrease of fear was evaluated using the modified falls efficacy scale (MFES). Results: In the analysis results, the Exp group showed significant increases in TUG, 10MWT, and F8WT within the both groups. There were significant differences in all variables between the Exp group and the Con group at the post-intervention evaluation, but there was no significant difference between the groups with respect to the TUG. Conclusion: The results of this study demonstrated that Otago exercise would be useful to improve balance and walking for TKR patients who want to improve their abilities and activities of daily living.
Background: Postoperative pain after bilateral total knee replacement (TKR) is expected to be more severe than unilateral TKR. Intravenous patient-controlled analgesia (IV PCA) is less effective than other methods of pain management especially immediately after an operation even though it is an easily controlled method for managing pain. This study was designed to evaluate the effect of femoral nerve blocks combined with IV PCA after bilateral TKR for postoperative pain control. Methods: The patients in group I (n = 20) were given only IV PCA with morphine and group II (n = 20) were given bilateral femoral nerve blocks with 12 ml of 0.25% bupivacaine and epinephrine 1 : 400,000 before extubation followed by an IV PCA. Main outcome measures included numerical rating pain score, cumulative opioid consumption, hourly dose during each time interval, and side effects. Results: The pain score in group II was significantly lower than that in group I immediately after recovery of awareness and at 3, 6, 12 hours postoperatively. Cumulative opioid consumption was significantly decreased in group II during the first 48 hours postoperatively. The hourly dose in group II was also significantly lower than that in group I until 12 hours postoperatively. There was no difference in side effects between the groups. Conclusions: We concluded that bilateral femoral nerve blocks improve analgesia and decrease morphine use during IV PCA after bilateral TKR.
Kim, Sang-Hoon;Ahn, Ok-Kyun;Bae, Dae-Kyung;Kim, Yoon-Hyuk;Kim, Kyung-Soo;Lee, Soon-Gul
Journal of Biomedical Engineering Research
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v.28
no.1
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pp.108-116
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2007
Recently, it has been reported that the posterior stabilized implant, which is clinically used for the total knee replacement (TKR), may have failure risk such as wear or fracture by the contact pressure and stress on the tibial post. The purpose of this study is to investigate the influence of the mal alignment of the posterior stabilized implant on the tibial post by estimating the distributions of contact pressure and von-Mises stress on a tibial post and to analyze the failure risk of the tibial post. Finite element models of a knee joint and an implant were developed from 1mm slices of CT images and 3D CAD software, respectively. The contact pressure and the von-Mises stress applying on the implant were analyzed by the finite element analysis in the neutral alignment as well as the 8 malalignment cases (3 and 5 degrees of valgus and varus angulations, and 2 and 4 degrees of anterior and posterior tilts). Loading condition at the 40% of one whole gait cycle such as 2000N of compressive load, 25N of anterior-posterior load, and 6.5Nm of torque was applied to the TKR models. Both the maximum contact pressure and the maximum von-Mises stress were concentrated on the anterior-medial region of the tibial post regardless of the malalignment, and their magnitudes increased as the degree of the malalignment increased. From present result, it is shown that the malalignment of the implant can influence on the failure risk of the tibial post.
Park, Hyung-Kyun;Kim, Yoon-Hyuk;Park, Won-Man;Kim, Kyung-Soo
Journal of Biomedical Engineering Research
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v.29
no.6
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pp.451-456
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2008
Total knee arthroplasty(TKA) using computer-assisted navigation has been increased in order to improve the accuracy of femoral and tibial components implantation. Recently, a few clinical studies have reported on the femoral stress fracture after TKA using computer-assisted navigation. The purpose of this study is to investigate the stress concentration around the femoral pin-hole for different pin-hole diameter, the modes of pin penetration by finite element analysis to understand the effects of pin-hole parameters on femoral stress fracture risk. A three-dimensional finite element model of a male femur was reconstructed from 1 mm thick computed tomography(CT) images. The bone was rigidly fixed to a 25 mm above the distal end and 1500 N of axial compressive force and 12 Nm of axial torsion were applied at the femoral head. For all cases, transcortical pin penetration mode showed the highest stress fracture risk and unicortical pin penetration mode showed the lowest stress concentration. Pin-hole diameter increased the stress concentration, but pin number did not increase the stress dramatically. The results of this study provided a biomechanical guideline for pin-hole fracture risk of the computer navigated TKA.
Background: The purpose of this study was to compare the analgesic effect of 0.25% and 0.5% levobupivacaine for real time ultrasound guided single-injection femoral nerve block for the patients who are undergoing bilateral total knee arthroplasty (TKA). Methods: Femoral nerve block was done to all patients with 20 ml of 0.9% normal saline on one leg and 20 ml of 0.25% levobupivacaine on the other leg for group I (n = 16) and 0.5% levobupivacaine for group II (n = 15) with 1:200,000 epinephrine and using real-time ultrasound and a nerve stimulator. The data concerning the verbal numerical rating scale (VNRS) for each leg, the consumption of the intravenous patient-controlled analgesia (IV PCA) and the demands for the additional analgesics was collected at 0, 1, 6, 12, 24 and 48 hours after the operation. Results: The legs on which femoral nerve block was done with levobupivacaine showed a lower VNRS score than the legs with normal saline in either group I or group II. The VNRS scores between the two legs, the consumption of the IV PCA and the demand for additional analgesics showed no significant differences between the groups. Conclusions: Our results demonstrate that single-injection femoral nerve block using real-time ultrasound with either 0.25% levobupivacaine or 0.5% levobupivacaine 20 ml provides a good effect for the postoperative pain control after TKA.
Purpose: Patient-controlled epidural analgesia (PCEA) is an effective method for controlling post surgical pain. However, it is associated with adverse drug reactions such as nausea and vomiting. In this, study we tested the effects of Nei-Guan (P6) acupressure on PCEA-associated nausea, vomiting, and pain in geriatric patients after total knee replacement arthroplasty (TKRA). Methods: Ninety-nine patients who had TKRA for the first time were randomly assigned to either, experiment group (n=50) or control groups (n=49). All patients received PCEA immediately after surgery, but acupressure on Nei-Guan (P6) point was applied to experiment group only. Ten minutes of finger acupressure on Nei-Guan (P6) acupressure point was applied twice with 15 minute-interval in the experiment group. The incidence of nausea, vomiting, and retching as well as pain intensity were assessed at 12 and 24 hours after surgery. Nausea, and vomiting were assessed by Index of Nausea, Vomiting and Retching (INVR) questionnaire. Pain intensity was measured with frequency of analgesics. Results: Vomiting both was significantly different between two groups at 12 hours (t=-2.18, p=0.03) and 24 hours (t=-2.64, p=0.01) after surgery. Total scores of nausea, vomiting and retching in experimental group was significantly lower than control group 24hours after surgery (t=-2.18, p=0.03). However, pain was not different between two groups. Conclusion: Nei-Guan (P6) acupressure may be considered as an effective nursing intervention to decrease PCEA-associated nausea and vomiting in older patients after TKRA.
The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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v.24
no.1
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pp.77-83
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2018
Background: The purpose of this study is to investigate that effect of manual therapy using pelvic compression belt on hip abductor strength and balance ability in total knee replacement (TKR) patients. Methods: The subjects consisted of twenty two post-TKR patients. Participants were randomly assigned to a pelvic belt group (n=11) and a placebo group (n=11). All participants underwent manual therapy including range of motion exercise, soft tissue mobilization around knee joint, strengthening exercise (Quad set, SLR, sidelying hip abduction, standing hamstring curls, sitting knee extension, step-up, wall slide to $45^{\circ}$ knee flexion). Manual therapy was executed five times a week for 2 weeks. Outcome measures included hip abductor strength by using Biodex system 4 pro, anterior to posterior balance, medial to lateral balance, total balance by using Biodex balance system SD. Results: After the completion of the manual therapy, hip abductor strength was showed statistically significant improvements in pelvic belt group (p<.05). Anterior to posterior balance, medial to lateral balance, total balance were showed statistically significant improvements in pelvic belt group and placebo group (p<.05). There was a statistically significant difference between the two groups in hip abductor strength and there was no statistically significant difference in balance. Conclusions: This results suggest that manual therapy using pelvic compression belt has could be used for selective muscle activation of the hip abductor muscle and has useful in hip abductor strength and balance ability in TKR patients.
Ahn, Hee Chang;Lim, Young Soo;Kim, Chang Yeon;Hwang, Weon Joong
Archives of Plastic Surgery
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v.32
no.1
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pp.93-99
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2005
In spite of proper maneuver of total knee replacement arthroplasty, some patients suffer from skin necrosis just above the implant. From Mar. 2000 to Jan. 2004, the authors performed reconstruction of knee skin defects after total knee replacement athroplasty. Total 6 cases of flap surgery were performed and patients ranged between 43-years-old to 82-years-old. Rectus femoris perforator based reversed adipofascial flaps were used in 2 cases, medial gastrocnemius muscular island flaps were used in 2 cases and sural artery based on adipofascial rotation flap was used in 1 case. One patient with extended necrosis underwent reconstruction with dual flaps of sural artery based adipofascial rotation flap and medial gastrocnemius muscular island flap. There were no distinctive complication needing additional procedure in all cases during the long term follow up. Reconstruction of necrosis following total knee replacement arthroplasty had several characteristics different from simple knee defect. The patients might have the history of long term steroid usages, excessive skin tension due to implants, underlying disease such as diabetes, rheumatoid disease, and etc. In addition, the early ambulation is mandatory in these patients of total knee replacement arthroplasty. With regards to these special considerations, a single stage and reliable operation must be needed. The authors introduce various reconstruction methods and algorithm that may aid easy decision making.
The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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v.23
no.2
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pp.45-49
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2017
Background: The purpose of this study was to investigate the effect of structured cryotherapy on edema of patients who had a total knee arthroplasty (TKA). Methods: The subjects were 58 patients who were diagnosed with osteoarthritis and had total knee arthroplasty in D hospital. In total, 29 people were in the leg elevation cryotherapy group (LECTG), 29 people were in the control group (CTG). After TKA, the patients' swelling on post operation days (POD) 3 were checked. After the post OP checking, LECTG was treated with cryotherapy with leg elevation for 12 days but CTG was cryo therapy with sit on chair. Results: Swelling show significant difference within the group (p<.05), but did not show signigicant difference between groups (p>.05). Conclusions: Base on the results, it was found the cryo therapy of $-78^{\circ}C$ improved swelling after TKA. Accordingly, it is thought that cryo therapy of $-78^{\circ}C$ has positive effect on swelling in the process of recovery after operation. but It did not approve that the leg elevation was even more effective. For this study, the reserch developed to enhance the effectiveness of the cryotherapy, would make it possible to apply to an effective cryotherapy posture.
Objectives To obtain future research basis of Korean Medicine for total knee arthroplasty patient by analyzing medical and Korean Medical service utilization and treatment duration. Methods Data sampling was performed on Health Insurance Review and Assessment Service patient data of 2015 (Confidence level of 97%) to analyze patients' medical and Korean Medical service tendency. Sampling groups were divided into two groups; i) Patients who completed their treatment within 5 months of total knee arthroplasty, ii) Patients who continued their treatment after 5 months of total knee arthroplasty, to investigate patients' medical and Korean Medical service tendency and individual characteristics were carefully monitored. Results It was confirmed that total of 1,655 patients had gone through total knee arthroplasty out of 1,453,486 patients who were gathered for sampling. First sampling group (Patients who completed their treatment within 5 months of total knee arthroplasty) was 287 patients and second sampling group (Patients who continued their treatment after 5 months of total knee arthroplasty) was 385 patients. The proportion of patients who visited Korean Medical service in first sampling group was lower than that of second sampling group. Conclusions It was confirmed that medical and Korean Medical service and cost consumed by second group (Patients who continued their treatment after 5 months of total knee arthroplasty) was higher than that of first group (Patients who continued their treatment after 5 months of total knee arthroplasty). It is highly recommended to continue with further study for efficient medical and Korean Medical service and reduced cost.
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