Joint Motion Research Articles

Penataklasanaan Fisioterapi pada Kasus Faciitis Plantaris Dextra dengan Modalitas Ultrasound dan Terapi Latihan di RS Cahya Kawaluyan

Plantar Fasciitis is heel pain caused by inflammation of the muscle membrane of the soles of the feet called the plantaris fascia. The plantar fascia is located on the surface of the sole of the foot, extending from the calcaneus towards the toes. To determine the implementation of Physiotherapy in reducing pain, increasing muscle strength, and increasing the Scope of Joint Movement in cases of Plantar Fasciitis Dextra using Ultrasound (US) modalities and exercise therapy. After 6 treatments using VAS, it showed a decrease in movement pain from T1 with a value of 3.5 to T6 with a value of 1, a decrease in tender pain from T1 with a value of 6 to T6 with a value of 2, while for silent pain T1 to T6 the value was 0. There was an increase in strength. T1 plantar flexion muscle is worth 4 to T6 is 5, T1 is 3 to T6 is 5, T1 eversion muscle is 3 to T6 5, T1 inversion muscle is 3 to T6 is 5. There is an increase in the range of motion of the ankle joint in the sagittal plane T1 : 150-00-200 becomes T6 : 200-00-350, in the rotation plane T1-T6 : 300-00-200.Ultrasound (US) can help reduce pain and reduce muscle tension. Exercise therapy can increase muscle strength, reduce stiffness and increase joint range of motion.

Penatalaksanaan Fisioterapi pada Kasus Sprain Ankle Dekstra dengan Modalitas Ultrasound Therapy dan Terapi Latihan di RSUD Bandung Kiwari

ankle sprain is an injury that occurs to the lateral complex ligaments due to excessive stretching accompanied by inversion and plantar flexion which occurs suddenly when the foot does not rest perfectly on an uneven floor/ground surface. To determine the implementation of Physiotherapy in reducing pain, increasing muscle strength, increasing the Scope of Joint Movement and preventing re-injury in cases of right ankle sprains using Ultrasound therapy and Exercise Therapy modalities. After undergoing therapy 6 times, the results using VAS showed a decrease in pain in silent pain, obtained a value of 2 at T1 & T2, a value of 1 at T3 - T5 and a value of 0 at T6. Pressure pain was obtained with a value of 3 at T1 - T3, a value of 2 at T4 and a value of 1 at T5 & T6. Movement pain was obtained with a value of 6 on T1 & T2, a value of 5 on T3 then a value of 4 on T4 4. On T5 & T6, the pain value was reduced to 3. There was an increase in the range of motion of the joint in the right Ankle joint in the sagittal plane, the results of T1 & T2 were obtained (S = 10ᴼ – 00ᴼ – 30ᴼ) T3 & T4 (S = 15ᴼ - 00ᴼ - 35ᴼ) and T5 & T6 there is an increase in the range of motion of the joints in the sagittal plane, namely (S = 20ᴼ - 00ᴼ - 35ᴼ ). In the Value Rotation field at T1 (R = 25ᴼ - 00ᴼ - 10ᴼ) then at T2 (R = 30ᴼ - 00ᴼ - 10ᴼ) at T3 (R = 30ᴼ - 00ᴼ - 15ᴼ) The value of T4 - T6 has an increase in value to (R = 30ᴼ - 00ᴼ - 20ᴼ). There was an increase in muscle strength by using MMT in the dorsiflexion plane of motion, a value of 4+ was obtained at T1-T3, a value of 5 at T4 - T6. Plantar flexion obtained a value of 4- at T1 & T2, a value of 4 at T3 & T4 and a value of 4+ at T5 and at T6 a value of 5. Inversion obtained a value of 4 at T1 & T2, a value of 4+ at T3 – T5 and a value of 5 at T6 . Eversion was obtained with a value of 4 at T1 & T2, a value of 4+ at T3 and an increase in value to 5 at T4 - T6. Ultrasound can reduce pain and reduce muscle tension, Theraband Exercise can increase the range of motion of joints, and Calf raises can increase muscle strength.

Application of Hyaluronic Acid/Alginate Sheet to Achilles Tendon Injuries to Prevent Peritendinous Adhesions

Abstract: Peritendinous adhesions is one of the most common complications following tendon injuries, resulting in limited joint motion and function. Interventions to optimize tendon gliding have been proposed—particularly the use of biological adjuncts such as hyaluronic acid. Several clinical and biomechanical studies have demonstrated improved tendon gliding and decreased excursion resistance with the use of a hyaluronic adjunct. We present a surgical technique using a hyaluronic acid/alginate sheet following acute repair of an Achilles tendon rupture to aid in tendon healing and prevent peritendinous adhesions. Level of Evidence: Diagnostic level IV.

Immediate Effects of Calf Tissue Flossing on Ankle Joint Torque and Dorsiflexion Range of Motion in Healthy Individuals: A Randomized Controlled Crossover Trial

Tissue flossing involves wrapping a rubber band around a muscle group for a few minutes while performing joint motion, enhancing ankle joint torque and range of motion. As limited ankle dorsiflexion range of motion and plantar flexion muscle weakness are risk factors for sports injury, assessing the therapeutic effects of tissue flossing is important. This study aimed to evaluate the immediate effects of calf tissue flossing on enhancing ankle joint torque and dorsiflexion range of motion. We conducted a randomized controlled crossover trial involving 19 healthy adult males who received two interventions (low and high-pressure tissue flossing bands) and a control condition (underwrap). Each intervention was applied for 2 minutes on the non-dominant calf, with 5–10 days between sessions. A pressure sensor placed on the posterior calf monitored the wrapping compression force. The intervention exercise comprised six voluntary isometric contractions of the ankle at three angles (20° plantar flexion, neutral 0°, and 10° dorsiflexion) for 3 seconds each using a dynamometer. The maximal isometric ankle plantar flexion torque and dorsiflexion range of motion were evaluated pre- and post-intervention. Significant interactions were observed in ankle plantar flexion torque at 10° dorsiflexion (p < 0.01) but not at 0° or 20° plantar flexion. The low- and high-pressure bands significantly enhanced ankle plantar flexion torque by 4.3 Nm (effect size [ES]: 0.14, p = 0.02) and 4.9 Nm (ES: 0.15, p < 0.05), respectively, and also enhanced the ankle dorsiflexion range of motion by 1.7° (ES: 0.43, p < 0.01) and 1.3° (ES: 0.35, p = 0.02), respectively, compared to the control. The low- and high-pressure band conditions had comparable effects on torque and range of motion. A few minutes of the calf tissue flossing intervention significantly enhanced ankle plantar flexion torque and dorsiflexion range of motion, although the effect sizes were trivial to small.

Patient activity recognition for robust performance under varied illumination and cluttered background in indoor environment

Human Activity Recognition (HAR) holds significant importance in health and human-machine interaction. However, recognizing actions from 2D information faces challenges like occlusion, illumination variation, cluttered backgrounds, and view invariance. These hurdles are particularly pronounced in indoor patient monitoring settings due to fluctuating lighting conditions and cluttered backgrounds, which compromise the accuracy of activity recognition systems. A new architecture named illuminationRevive has been proposed to tackle this issue. Which utilizes an encoder-decoder convolutional neural network and image post-processing blocks to enhance the image's visual appearance. A new dataset comprising seven indoor physical activities has been proposed, created with contributions from thirty individuals aged 20 to 45. A hybrid fusion architecture is proposed to classify activities, integrating motion sequence information and body joint features. The proposed classification model incorporates generated Skeleton Motion History Images (SMHIs), collected human joint motion features from video frames, and novel kinematic and geometric features within window frames as inputs. The model can extract spatial and temporal feature vectors by integrating ResNet50-ViT (Residual Network-50 layers, Vision Transformer) and CNN-BiLSTM (Convolutional Neural Network-Bidirectional Long Short-Term Memory) layers. The suggested classification model was evaluated alongside state-of-the-art models using the LNMIIT-SMD (The LNM Institute of Information Technology-Skelton Motion Dataset) and established NTU-RGBD (Nanyang Technological University's Red Blue Green and Depth information) dataset. The evaluation aimed to assess the effectiveness of the proposed classification model architecture. Results demonstrate the superiority of the proposed model, achieving impressive accuracies of 98.21% on real-time data, 98.45% on the proposed dataset, and 97.12% on the NTU-RGBD dataset.

A Study on The Reliability and Validity of Measuring The Range of Motion of The Knee Joint Using A Universal Goniometer and A Smartphone Application-Based Goniometer

A Study on The Reliability and Validity of Measuring The Range of Motion of The Knee Joint Using A Universal Goniometer and A Smartphone Application-Based Goniometer

The Effects of a Floss Band on Ankle Range of Motion, Balance, and Gait in Chronic Stroke: A Randomized Controlled Study

Background/Objectives: Stroke patients generally have balance and gait dysfunction due to decreased range of motion (ROM) and muscle strength of the ankle joint. A therapist can apply a floss band to enhance ROM, pain control, jump performance, strength, myofascial release, and recovery from fatigue. This study compared the immediate effects of floss band application on ankle ROM, balance, and gait ability in stroke patients. Methods: This study randomized 40 chronic stroke patients to either the floss (n = 20) or sham (n = 20) band group. The intervention consisted of wrapping the ankle with a band (floss and sham). Balance and gait ability were measured using APDM Mobility Lab system equipment. Outcome measures were assessed at baseline and immediately after applying the floss or sham band. Results: There were significant improvements in dorsiflexion (DF), WBLT, static balance, and foot strike in those who used the floss band compared to the sham group (all p < 0.05). Conclusions: The floss band improved ankle DF, balance, and gait, indicating that it is a feasible therapeutic method for improving ankle DF, balance, and gait in chronic stroke patients.

Evaluation of Electrical Characteristics of Weft-Knitted Strain Sensors for Joint Motion Monitoring: Focus on Plating Stitch Structure

We developed a sensor optimized for joint motion monitoring by exploring the effects of the stitch pattern, yarn thickness, and NP number on the performance of knitted strain sensors. We conducted stretching experiments with basic weft-knit patterns to select the optimal stitch pattern and analyze its sensitivity and reproducibility. The plain stitch with a conductive yarn located on the reverse side exhibited the highest gauge factor value (143.68) and achieved excellent performance, with a stable change in resistance even after repeated sensing. For an in-depth analysis, we developed six sensors using the aforementioned pattern with different combinations of yarn thickness (1-ply, 2-ply) and NP numbers (12, 13, 14). Based on bending experiments, the GF across all sensors was 60.2–1092, indicating noticeable differences in sensitivity. However, no significant differences were observed in reproducibility, reliability, and responsiveness, confirming that all the sensors are capable of joint motion monitoring. Therefore, the plain-patterned plating stitch structure with conductive yarn on the reverse side is optimal for joint motion monitoring, and the yarn thickness and NP numbers can be adjusted to suit different purposes. This study provides basic data for developing knitted strain sensors and offers insights into how knitting methods impact sensor performance.

An Alternative Fixation Technique for the Treatment of Comminuted Intra-Articular Distal Clavicle Fractures Using Contoured Reconstruction Bridging Plate

Background: Comminuted intra-articular distal end clavicular fractures are rare type fractures, which cannot be fixed with standard fixation methods. This work aimed to study an alternative fixation technique for the treatment of comminuted intra-articular distal clavicle fractures using the contoured reconstruction bridging plate. Methods: The prospective study was conducted from August 2017 and March 2023 on 17 patients with highly comminuted intra-articular distal end clavicular fractures (Robinson type 3B2), managed by ORIF using a contoured reconstruction plate with coracoclavicular screws augmentation through the plate, bridging the AC joint in the age group of 18 to 50 years. Functional outcomes were evaluated at the final follow-up 12 months after plate removal, which was done after the full union of the fracture, using the modified shoulder score for distal clavicle fractures. Results: Time until the achievement of radiologic union ranged from 6 to 20 weeks (mean=15.8). Postoperative complications were superficial infection in 5.88% of patients and hardware symptoms in 5.88% of patients. Satisfactory results were excellent in 58.82% of patients and good in 41.18% of patients. The mean modified shoulder score was 16.2 at the final follow-up of 12 months after plate removal. Conclusion: In comminuted intra-articular distal end clavicular fractures which are not amenable for fixation with the standard methods, we recommend using a low-profile contoured reconstruction plate bridging the AC joint, with coracoclavicular screws augmentation as an alternative method of fixation with satisfactory results to restore normal anatomy, preserve AC joint motion, and reduce arthritic changes.

Biological total hip arthroplasty combined with impacting bone grafting for the treatment of moderate to severe acetabular invagination secondary to rheumatoid arthritis

To explore the surgical technique and clinical outcomes of biological total hip arthroplasty(THA) combined with impacting bone grafting for the treatment of moderate to severe acetabular invagination secondary to rheumatoid arthritis(RA). Total of 20 patients(28 hips) with RA secondary to acetabular invagination were treated with THA of bioprosthesis combined with autogenous bone grafting from January 2012 to October 2020, including 5 males(8 hips) and 15 females(20 hips) with an average age of (55.10±4.96) years old from 45 to 64 years old. The depth of acetabular invagination was 8.43 to 16.25 mm with an average of (11.91±2.59) mm. According to Sotello-Garza and Charnley classification criterion, there were 15 cases(23 hips) of type Ⅱ(protrusio acetabuli 6 to 15 mm), and 5 cases(5 hips) of type Ⅲ(protrusio acetabuli>15 mm). Autologous femoral head granular bone and(or) allograft impacting grafting were used to reconstruct the acetabum, the biological porous acetabular cup was fixed by pressure fitting. At the postoperative follow-up, the activity function of the hip joint, the length of both lower limbs, VAS and Harris score were evaluated, and the healing of bone graft, the restoration of the hip rotation center and loosening of prosthesis were assessed by X-ray. The operation time was 75 to 160 min with anverage of (103.32±18.18) min, the intraoperative blood loss was 150 to 650 ml with an average of (319.64±122.61) ml. There were no neurovascular complications during the operation. All patients were followed up from 2 to 10 years with an average of (5.45±2.50) years. The horizontal distance between the center of femoral head and the Kohler's line was increased from (11.40±1.85) mm preoperatively to (25.99±2.56) mm at the final follow-up(P<0.01), and the vertical distance between the center of femoral head and the line joining bilateral ischial tuberosities was decreased from (89.36±5.20) mm preoperatively to (71.84±3.55) mm at the final follow-up(P<0.01). The range of flexion motion of hip joint increased from (44.43±10.57)° preoperatively to (98.75±12.52)° at the final follow-up(P<0.01), the range of abduction motion of hip joint increased from (12.50 ±6.01)°preoperatively to final follow-up (32.82±5.39)°(P<0.01). The discrepancy of both lower limbs was significantly decreased from (19.39±5.93) mm preoperatively to (6.64±2.87) mm at the final follow-up(P<0.01). The VAS decreased from (5.36±0.78) preoperatively to (1.82±0.86) at the final follow-up(P<0.05), and the Harris score increased from (41.39±7.77) preoperatively to (89.00±4.67) at the final follow-up(P<0.01). All the patients could move independently without assistance. Among them, 2 patients(2 hips) had hip pain after exercise, and 1 patient(1 hip) suffered from periprosthetic fracture due to fall. Autologous femoral head granular bone grafting can reconstruct the acetabulum, and restore the rotation center of the hip joint, combined with biological porous tantalum/titanium acetabular cup can achieve good short-and medium-term outcomes in the treatment of moderate to severe acetabular invagination secondary to rheumatoid arthritis.

Management of Acute Lateral Humeral Condyle Fractures in Children

Pediatric elbow fractures are quite common, accounting for up to 34% of bone fractures in children. Among these, acute lateral humeral condyle (LHC) fractures represent up to 22%. The accurate diagnosis and early treatment of LHC fractures are crucial due to the potential for abnormal growth and significant long-term impacts on joint motion. With the aim of enhancing the understanding of pediatric LHC fracture management among pediatric healthcare practitioners, we present a literature review combined with our technical recommendations based on our experience. Imaging through AP, lateral, and internal oblique X-rays remains the gold standard for diagnosis, although there is increasing focus on non-irradiating techniques, considering the skeletally immature nature of the patients. Several classification systems aid in fracture assessment, each varying in their simplicity, reproducibility, and inter- and intra-observer correlations. The treatment approaches for LHC fractures include conservative management with immobilization for minimally displaced fractures and surgical intervention for displaced fractures. The surgical options encompass closed and open reductions, using Kirschner wires or cannulated screws for fixation. While both methods show favorable outcomes, recent years have seen a growing interest in expanding the traditional indications for closed approaches. After a period of post-surgical immobilization of the limb, rehabilitation care is recommended to assist in the recovery of the range of motion. During the postoperative period, the most frequent complications are bony overgrowth, malunion, and infection, although with highly variable rates, which typically do not result in functional impairment if managed properly. Regular follow-up and monitoring are essential for optimal recovery and minimizing long-term complications.

Management of extra-articular fracture of the distal humerus with the upside-down use of PHILOS plates in front of the humerus: a retrospective study of 20 patients after 28.3 months

BackgroundExtra-articular distal humerus locking plates (EADHPs) have been widely employed for the treatment of extra-articular fractures of the distal humerus, but interference with the radial nerve and poor fastening of distal fracture fragments by screws remain. The aim of this study is to evaluate the clinical and imaging effects of the anterolateral approach in the treatment of extra-articular fractures of the distal humerus with the upside-down use of proximal humerus internal locking system (PHILOS) plates in front of the humerus.MethodA retrospective analysis (10/2018–10/2022) was conducted on the clinical data of patients with extra-articular fractures of the distal humerus treated with the upside-down use of the PHILOS via the anterolateral approach. The fracture union time, range of motion of the elbow joint, Mayo elbow performance score (MEPS), Disabilities of the Arm, Shoulder and Hand (DASH) score, Visual Analogue Scale (VAS) score for pain and incidence of complications were analysed at the final follow-up.ResultsA total of 20 patients (11 males, 9 females) with a mean age of 40.3 ± 17.0 years (16–87 years) and a follow-up of 28.3 ± 10.8 months (15–53 months) were evaluated. The average number of screws in the distal humeral fragment was 5.7 ± 0.6. The average fracture union time was 23.3 ± 3.3 weeks. The mean longest and shortest cortical lengths from the coronoid fossa were 87.3 ± 13.4 mm and 47.9 ± 9.4 mm, respectively. At the final follow-up, the average range of elbow motion was − 3.3 ± 2.6° of extension and 135.1 ± 3.1° of flexion. The mean MEPS score was 97.8 ± 6.0. The mean DASH score was 1.25 ± 3.6 (range, 0–15.9), and the mean VAS score was 0.1 ± 0.4 (range, 0–2). None of the patients developed serious complications that required reoperation.ConclusionsThe upside-down use of PHILOS plates in front of the humerus has good results in the treatment of extra-articular fractures of the distal humerus, so it is an alternative for fixing distal humerus extra-articular diaphyseal fractures when EADHPs are not suitable or preferred, especially for smaller distal fracture fragments, and reducing interference with the radial nerve.

A single computational model to simulate the three foot-rocker mechanisms of the gait cycle

The use of computational models of the human foot based on finite element analysis offers a promising alternative for understanding the biomechanical internal changes of this structure. However, the evaluation of dynamic scenarios has been challenging. This research aims to design a computational model that accurately simulates foot biomechanics during the stance period of the gait cycle in healthy and flatfoot scenarios. The model is focused on analyzing stress variations in soft tissues such as the plantar fascia and spring ligament to provide valuable insights into the internal biomechanics of the foot. The results were evaluated using maximum principal stress. Validation was performed by measuring clinical angles and comparing the range of motion of foot joints with known values for each phase. Results show that the plantar fascia and spring ligament stress increase during the second and third rockers compared to the first rocker. Additionally, as was expected, flatfoot simulations show stress increments in those evaluated soft tissues, while surgical treatment scenarios contributed to stress reduction in these regions. These findings emphasize the active role of the plantar fascia and spring ligament, particularly during approximately 50% of the stance period when the plantar arch deformity is greater. Results show valuable insights into the internal biomechanics of the foot through computational models.

A relaxor ferroelectric crystal based Two-DOF miniature piezoelectric motor with fish body structure

Multi-dimensional movements and miniaturization are required for robotic joints motion, multi-axis optical alignments and other multiple degree-of-freedom (DOF) actuation scenes. However, it is a challenge for piezoelectric motors to guarantee multi-DOF movements, miniaturization, high load capacity and high resolution simultaneously. Inspired by synergic movement of body and caudal fin of fish in nature and the construction idea of metamaterials, we proposed a two-DOF linear piezoelectric motor (4mmHeight × 3mmLength × 3mmWidth) based on the artificial elongation 31z and shear 35x/y mode by using Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIMNT) relaxor ferroelectric single crystal as piezoelectric elements. The results demonstrate that the motor is capable of achieving bidirectional motion in both X and Y axes, with the PIMNT crystal-based motor reaching a velocity of up to 94.8 mm/s. Its mechanical loading capacity per unit volume reaches as high as 1.39 mN/mm3, which exceeds the load capacity of currently reported two-DOF motors by 10 times. Moreover, it exhibits an exceptional step resolution of 5 nm, outperforming existing two-DOF motors by 1–2 orders of magnitude in terms of precision and accuracy. Furthermore, by modulating the driving signals of this motor, it can traverse any trajectory within the XY plane. The proposed ultrasonic motor has potential for applications in micro-robots, nano-precision motion, automatic visual systems and haptic interfaces.

Investigation research on the mechanism of knee joint injury in table tennis players landing before and after fatigue during stroke play

This study investigated the relationship between lower extremity biomechanics and anterior cruciate ligament (ACL) injury in table tennis players before and after fatigue. We compared the biomechanical changes in the lower limbs of table tennis players during landing after completing a chasse-step while stroking, both before and after fatigue. A further aim was to examine ACL injury and provide a reference for training table tennis players. Ten national Level I table tennis players underwent lower extremity neuromuscular fatigue by running at a constant speed. Biomechanical data of the athletes were collected before and after fatigue. The effects of movement and characteristic time before and after fatigue on biomechanics were determined using a paired sample t-test. After fatigue, the angle of the ankle joint and the range of motion of the knee joint were significantly reduced (p &lt; 0.001), while the angle of motion of the hip joint did not change considerably (p = 0.747). The angular velocity of the ankle and knee joints increased significantly after fatigue (p &lt; 0.001), but the angular velocity of the hip joint decreased significantly (p = 0.013). Additionally, the ankle plantar flexion moment (p = 0.003), knee flexion moment (p &lt; 0.001), and hip flexion moment (p &lt; 0.001) increased significantly after fatigue. The ankle power (p = 0.023), knee power (p = 0.009), and hip power (p &lt; 0.001) were significantly reduced throughout the landing cycle after fatigue. Fatigue in table tennis athletes reduces the sagittal plane buckling angle of the knee and ankle joints during landing. This change increases ground reaction and knee joint forces, significantly elevating the risk of knee injuries, including ACL tears. The reduced flexion angle exposes the knee to greater torque and diminishes its shock absorption capacity, heightening the risk of lower limb injuries. These findings underscore the need to address the impact of fatigue on landing mechanics in sports training and rehabilitation, emphasizing preventive measures.

Influence of palmar tilt on wrist palmar flexion range-of-motion limitation after conservative treatment of distal radial fractures

Background Distal radial fractures are common forearm injuries. A key rehabilitation objective is achieving adequate wrist palmar and dorsal flexion range-of-motion (ROM). However, few studies have explored this relationship, with even lesser number of studies investigating the impact of distal radius alignment on wrist ROM limitation due to fractures. We aimed to determine the effect of radial alignment on wrist palmar and dorsal flexion ROM after conservative treatment for distal radial fractures. Patients and methods This retrospective, cohort study, included 82 patients with distal radial fractures (11 men, 71 women, mean age: 65.9 ± 16.6 years) who underwent examination at an orthopedic clinic. Wrist ROM limitation was defined as ˂60° of dorsal flexion and ˂55° of palmar flexion. The palmar tilt (PT), radial length (RL), and radial inclination (RI) were radiographically measured. The patient’s age, residual symptoms, and rehabilitation period were extracted from medical records. Univariate and multivariate analyses were conducted with the presence/absence of wrist ROM limitation as the objective variable, with the PT, RL, and RI as explanatory variables. A comparison of age, and rehabilitation period between the groups with and without wrist ROM limitation was performed using the Mann–Whitney U test. The presence/absence of residual symptoms were compared between two groups using the chi-squared test. Results Univariate analysis revealed that PT, RL and RI were associated with palmar flexion ROM limitation. Multivariate analysis showed that PT was the only factor associated with palmar flexion ROM limitation (odds ratio: 0.85, 95% confidence interval: 0.78–0.91, p < 0.001), while dorsal flexion ROM limitation was not associated with any of the three measurements. The group with palmar flexion ROM limitation presented older age (73.1 vs. 59.6 years), higher residual symptom frequency (23 vs. 12 patients), and longer rehabilitation period (159.2 vs. 73.9 days) compared to the group without the limitation (p < 0.01). Conclusion Dorsal displacement of the distal radius induces alterations in the wrist joint motion axis, potentially affecting limitation in palmar flexion ROM. Patients with palmar flexion ROM limitation had more residual symptoms and longer rehabilitation period than those without. These findings may contribute to the development of evidence-based joint ROM exercises, risk management, goal setting, and rehabilitation programs for patients with distal radial fractures.

A multifunctional carbon fiber composite film inspired by pumpkin growth toward tunable electromagnetic interference shielding

Carbon fiber composite film is an excellent electromagnetic interference (EMI) shielding material. However, its further application is limited by its single-loss characteristics of electromagnetic waves and unadjustable EMI shielding performance. Inspired by pumpkin growth, a carbon fiber/Co and Ni nanoparticles composite (PCF/CN) with porous, multi-interface, and cross-linked structure was designed through in-situ growth strategy in this work. In this process, Co2+ and Ni2+ were used as ovules while the composite nanofibers were used as the ovaries to provide active sites for seed growth. Polyether (P123) inside the composite nanofibers decompose under a high-temperature treatment and form a porous structure. The polyacrylonitrile (PAN) will form the "peel" during the high-temperature treatment. The PCF/CN provides abundant pores, plentiful non-homogeneous interfaces, and rich conduction paths for the attenuation of electromagnetic waves. After encapsulation with waterborne polyurethane (WPU), the obtained flexible PCF/CN/W composite film displays tunable EMI shielding efficiency using the "Origami" strategy. And the EMI shielding efficiency for PCF/CN-2/W reaches 24.73 dB after two folds due to the absorption loss, reflection loss, conduction loss, and interfacial polarization of the porous multi-interface cross-linked structure. Interestingly, the fabricated composite film also exhibits excellent photothermal conversion performance with fast thermal response time and stability. In addition, the resultant composite film processed sensitive sensing function to detect human joint motion.

Modeling and Active Vibration Control of Flexible Robotic Arm and Its Application in Agricultural Water Conservancy Field

In order to improve the modeling and active vibration control effectiveness of flexible manipulators, this paper combines big data technology to study the modeling and active control of flexible manipulators. In addition, this article decouples the dynamic model of the flexible joint manipulator based on voltage control method, redefines the control input of the system as the voltage of the joint motor, and uses a nonlinear state observer to control the flexible link manipulator. The control strategy proposed in this article is based on a nonlinear state observer, combined with input-output control, to achieve tracking of joint angular displacement in a flexible linkage manipulator. Through experimental research, it can be seen that the big data based modeling and active vibration control research system for flexible robotic arms proposed in this paper can effectively improve the motion control effect of flexible robotic arms.

Wrist arthrodesis following resection of recurrent giant cell tumor of distal end of radius: A case report

The recurrence rate of giant cell tumor (GCT) of bone is 20%. GCT of bone is an aggressive and potentially malignant lesion, and variable clinical behaviour. The distal femur and proximal tibia are the most common sites, accounting for 50% of all GCT of bone, followed by the distal radius (10%). The prevalence of GCT peaks during the 3rd decade, with 80% of cases occurring between 20 and 50 years of age. Local recurrence and loss of joint function are still major problems following surgery The goals of treatment are to achieve satisfactory removal of the tumor, to decrease the chance of local recurrence, and to preserve as much wrist function as possible. Here we present a case of 32-year-old female patient presented with painful lump over right wrist joint since 2 months. Previously patient was surgically treated with intralesional curettage and illiac crest bone graft and bone cement for GCT of distal end of Radius 2 years back. Xray and Magnetic resonance imaging (MRI) showed a well-defined u expansile lytic soft tissue lesion which is homogenously enhanced involving medullary cavity with cortical erosion and extending into soft tissue plane. We performed wide resection of distal third radius and ulna using dorsal approach with radial strut graft and wrist arthrodesis. Functional outcome was evaluated using the modified Musculoskeletal Tumor Society scoring system. Grip strength was assessed using a dynamometer, and range of motion of the metacarpophalangeal joint was assessed using a goniometer.

Does the intervention for adhesive capsulitis in patients with diabetes differ from that for patients without diabetes?: A systematic review.

Adhesive capsulitis (AC) is often accompanied by pain and restriction in range of movement, which long lasting symptoms often have negative impact on patients' work and lives. Since diabetes mellitus (DM) is an independent risk factor for developing AC, and AC with DM have more limitations of joint motion than general people. The aim of the present study is to evaluate the difference of clinical efficacy between diabetes and non-diabetes, and to explore whether AC with diabetes need special intervention compared to non-diabetes. Pubmed NCBI and Embase were searched for studies published in the last 30 years. We conducted a literature search for terms regarding AC and DM on Pubmed NCBI and Embase. A total of 9 studies eligible for inclusion. The affected shoulders in these studies ranged from 26 to 135, 460 shoulders (551 participants) in total, including 166 shoulders in diabetic group and 394 shoulders in non-diabetic/idiopathic group. Interventions included shock wave therapy, hydrodilatation, arthroscopic capsular release, manipulation under cervical nerve root block. Evaluation indicators included pain, certain shoulder questionnaires, range of motion. Positive clinical efficacy were emerged after interventions between the 2 groups. The studies that better improvement of pain in non-diabetic/idiopathic group were 2 of 6, that of certain shoulder questionnaires were 4 of 8, that of range of motion were 3 of 6. Whether AC combined with DM or not, the current treatment could achieve positive clinical effectiveness and there is some statistical evidence show that the curative effect of AC combined with DM is worse than non-diabetic. In other words, the available evidence suggests that patients with DM might require additional rehabilitation measures with routine glycemic control.