Safety of Early Application of Continuous Passive Motion in Patients after Total Knee Arthroplasty

ObjectiveThis research aimed to study the effect of early application of continuous passive motion (CPM) on the drainage volume of knee joints post total knee arthroplasty (TKA). MethodsThe drainage volume was measured 1 h before,during and after CPM on the day and next day of the operation. ResultsThere was no significant difference in the drainage volume before,during and after CPM(P >0.05). ConclusionEarly application of CPM is safe for TKA patients.

Clinical observation on filiform fire-needling plus continuous passive motion therapy for frozen shoulder

Objective:To observe the clinical efficacy of filiform fire-needling plus continuous passive motion(CPM)therapy for frozen shoulder.Methods:A total of 72 patients were randomized into an observation group and a control group by the random number table method,with 36 cases in each group.Patients in the control group received celecoxib capsule plus CPM,while those in the observation group received filiform fire-needling plus CPM.The whole course of treatment lasted for 2 weeks in both groups.The visual analog scale(VAS),Constant-Murley score(CMS)and range of motion of shoulder joint were measured for therapeutic efficacy evaluation.Results:The total effective rate was 91.7%in the observation group,higher than 72.2%in the control group,and the between-group comparison showed statistical significance(P<0.05).After treatment,the VAS scores in the two groups dropped significantly,the CMS as well as the range of motion including abduction,forward flexion and extension were all increased significantly,and the intra-group comparisons showed statistical significance(all P<0.05).The betweengroup comparisons showed the improvements in these items in the observation group were more significant than those in the control group(all P<0.05).Conclusion:Filiform fire-needling plus CPM can produce more significant efficacy than celecoxib capsule plus CPM for frozen shoulder;it can alleviate pain,improve shoulder function and restore joint range of motion in such patients.

Dynamics of a spacecraft with large flexible appendage constrained by multi-strut passive damper

This paper is concerned with the dynamics of a spacecraft with multi-strut passive damper for large flexible appendage.The damper platform is connected to the spacecraft by a spheric hinge,multiple damping struts and a rigid strut.The damping struts provide damping forces while the rigid strut produces a motion constraint of the multibody system.The exact nonlinear dynamical equations in reducedorder form are firstly derived by using Kane＇s equation in matrix form.Based on the assumptions of small velocity and small displacement,the nonlinear equations are reduced to a set of linear second-order differential equations in terms of independent generalized displacements with constant stiffness matrix and damping matrix related to the damping strut parameters.Numerical simulation results demonstrate the damping effectiveness of the damper for both the motion of the spacecraft and the vibration of the flexible appendage,and verify the accuracy of the linear equations against the exact nonlinear ones.

A novel 5-DOF exoskeletal rehabilitation robot system for upper limbs

A novel 5-DOF exoskeletal rehabilitation robot for upper limbs of hemiplegic patients caused by stroke is proposed in this paper. Its hardware structure is introduced and the control methods are ana- lyzed. To implement intelligent and interactive rehabilitation exercises, motion intention of patients＇ up- per limb is introduced into control methods of rehabilitation exercises. In passive motions, according to the character of unilateral impaired, multi-channels surface electromyogram （sEMG） signals of patients＇ healthy arm muscles are acquired and analyzed to recognize the upper limb motions, then drive the robot and assist paralysis ann＇s rehabilitation exercises. In active-resistant motions, because patients are re- covered with some muscle forces and active motion ability after a rehabilitation period, the terminal force loaded on the robot by an impaired arm are estimated with multi-channel joint torque sensors, according to which, the terminal velocity of the robot is controlled to drive the joint motions with a damp controller.

Human-like Three-dimensional Walking with Natural Dynamic

Natural dynamics can be exploited in the control of biped walking robots: the swing leg can swing passively, the compliant ankle can naturally transfer the center of pressure along the foot and help in toe off. These mechanisms simplify control and result in motion that is smooth and natural looking. Imitated human being’s behavior, we presented a control strategy for HIT III biped robot, in which active and passive motions were combined. The experiment result shows that robot walked at a faster speed (approximately 0.25m/s) than previous and had a natural and smooth looking gait.

Dry needling at myofascial trigger points mitigates chronic post-stroke shoulder spasticity

Post-stroke spasticity is associated with restriction in the range of motion of the shoulder.Reducing muscular dystrophy may help relieve muscular dysfunction in patients with post-stroke shoulder spasticity.Dry needle therapy is a method of needling the trigger points using a syringe needle without the use of a drug.Dry needle therapy is commonly used for pain at the shoulder,neck,waist,and back.In this case study,a 62-year-old male patient affected with cerebral hemorrhage of the right frontal lobe had received rehabilitative treatment for 12 years.However,he still experienced shoulder spasticity.The patient received daily dry needling at the trigger points of infraspinatus,teres minor,posterior deltoid,and pectoralis major on 9 days.After the first and ninth treatment,the Modified Ashworth Scale and the passive range of motion of the shoulder was used to assess the effect of the treatment.The spasticity and range of motion of the shoulder showed obvious improvement.These results indicate that dry needling at the myofascial trigger points can effectively treat chronic poststroke shoulder spasticity.

Passive bearings-only target motion analysis based on association of multiple arrays

The method for Bearings-Only Target Motion Analysis (BO-TMA) based on bearing measurements fusion of two arrays is studied. The algorithms of pseudolinear processing, extended Kalman filter and maximum likelihood estimation are presented. The results of simulation experiments show that the BO-TMA method based on association of multiple arrays not only makes contributions towards eliminating maneuvers needed by bearings-only TMA based on single array,but also improves the stabilization and global convergence for varied estimation algorithms.

The status of the cervical spine in preschool children with a history of congenital muscular torticollis

Background: Infants with congenital muscular torticollis are born with an asymmetric range of motion and a muscular imbalance in the cervical spine, as a result of a shortening or excessive contraction of the sternocleidomastoid muscle. Purpose: The study aimed to investigate passive range of motion (PROM) for rotation and lateral flexion, and muscle function of the cervical spine in children that had a history of CMT as infants. Study design: a prospective cohort study. Patient sample: 58 children at the age of 3.5 to 5 years that had been treated for CMT have infants participated in the study. Method: PROM was measured with protractors and muscle function was estimated with a modified Muscle Function Scale. Data from infancy were taken from earlier records. Result: PROM in rotation of the neck was mean 98.7&#176 and PROM in lateral flexion of the neck was mean 69.1&#176. Symmetric PROM of the neck was found in 74% of the children for rotation and in 88% of the children for lateral flexion. Multiple regression showed that gender and PROM in rotation as infants had a significant impact on asymmetric PROM. Forty-five percent of the children had some degree of muscular imbalance in the lateral flexors of the neck. Conclusion: Possible risk factors for later asymmetric PROM are: gender, birth weight, gestation week and PROM in rotation as infants. These factors ought to be taken into consideration when developing guidelines for long-term follow-up.