Is the proprioceptive neuromuscular facilitation technique superior to Shaker exercises in swallowing rehabilitation?

PURPOSE: This prospective study was planned to investigate whether the combined isotonic technique of proprioceptive neuromuscular facilitation (PNF) is superior to Shaker exercises in improving the function of swallowing muscles. METHODS: Fifty individuals (30 females and 20 males; mean age 68 ± 3.89 years) with swallowing difficulties were separated into two groups randomly. The treatment groups were Shaker and PNF groups, which performed these exercises three times in a week for6 weeks. Swallowing difficulties were determined with the Turkish version of the eating assessment tool (T-EAT-10). The 100 ml-water swallow test was used to measure capacity, volume, and speed of swallowing. Contraction amplitude changes used as a universal measurement of motor unit activity during the muscle action were measured with superficial electromyography. RESULT: After 6 weeks of exercise training, T-EAT-10 scores decreased in both groups (p < 0.001). Water swallowing capacity and volume improved in both groups (p < 0.001). There was no change in swallowing speed in both groups (p > 0.05). Maximal voluntary contraction values of suprahyoid muscles were higher in PNF than the Shaker group (p < 0.05). CONCLUSION: Both the types of exercise can be used in the rehabilitation of swallowing difficulties. However, the PNF technique increased the contraction amplitude values that occur during maximum contraction more than the Shaker exercises. Different functional evaluations are needed to determine the effectiveness of PNF on swallowing difficulty.

Quadriceps tendon autograft ACL reconstructed subjects overshoot target knee extension angle during active proprioception testing.

PURPOSE: To compare the active joint position sense (JPS), muscle strength, and knee functions in individuals who had anterior cruciate ligament (ACL) reconstruction with quadriceps tendon autograft, hamstring tendon autograft, tibialis anterior allograft and healthy individuals. It was hypothesized that when compared to an age and gender-matched healthy control group, subjects who were post-ACL reconstruction would display impaired active joint position sense, knee extensor and flexor strength symmetry and knee function at 1 year post-surgery. A secondary hypothesis was that differences would exist between the quadriceps tendon autograft, hamstring tendon autograft and tibialis anterior allograft groups. METHODS: Sixty-seven patients with ACL reconstruction and 20 healthy individuals were included. Active JPS reproduction was measured at 15°, 45° and 75° of knee flexion. International Knee Documentation Committee (IKDC) subjective score and one-leg hop test were used to assess the functional status of the patients. RESULTS: The JPS detection was different at the 15° target angle between groups (F3.86 = 24.56, p < 0.001). A significantly higher proportion of quadriceps tendon autograft group patients failed to identify the 15° active JPS assessment position compared to the other groups (p < 0.0001). The quadriceps index was lower in patients compared to healthy individuals (p < 0.001), while the hamstring index was similar (n.s.). The knee functional outcomes were similar between ACL reconstructed groups and healthy controls (n.s.). CONCLUSION: Knee proprioception deficits and impaired muscle strength were evident among patients at a mean 13.5 months post-ACL reconstruction compared with healthy controls. Patients who underwent ACL reconstruction using a quadriceps tendon autograft may be more likely to actively over-estimate knee position near terminal extension. Physiotherapists may need to focus greater attention on terminal knee extension proprioceptive awareness among this patient group. LEVEL OF EVIDENCE: III.

Sagittal plane tilting deformity of the patellofemoral joint: a new concept in patients with chondromalacia patella.

PURPOSE: The aims of this study were to evaluate sagittal plane alignment in patients with chondromalacia patella via magnetic resonance imaging (MRI), analyse the relationships between the location of the patellar cartilaginous lesions and sagittal alignment and finally investigate the relationships between the sagittal plane malalignment and patellofemoral loadings using by finite element analysis. METHODS: Fifty-one patients who were diagnosed with isolated modified Outerbridge grade 3-4 patellar chondromalacia based on MRI evaluation and 51 control subjects were evaluated. Chondromalacia patella patients were divided into three subgroups according to the chondral lesion location as superior, middle and inferior. The patella-patellar tendon angle (P-PT) was used for evaluation of sagittal alignment of patellofemoral joint. Each subgroup was compared with control group by using P-PT angle. To investigate the biomechanical effects of sagittal plane malpositioning on patellofemoral joint, bone models were created at 30°, 60° and 90° knee flexion by using mean P-PT angles, which obtained from patients with chondromalacia patellae and control subjects. The total loading and contact area values of the patellofemoral joints were investigated by finite element analysis. RESULTS: The mean age of all participants was 52.9 ± 8.2 years. The mean P-PT angle was significantly lower in chondromalacia group (142.1° ± 3.6°) compared to control group (144.5° ± 5.3°) (p = 0.008). Chondral lesions were located in superior, middle and inferior zones in 16, 20 and 15 patients, respectively. The mean P-PT angles in patients with superior (141.8 ± 2.7) and inferior subgroups (139.2 ± 2.3) were significantly lower than the values in the control group (p < 0.05). The contact area values were detected higher in models with chondromalacia than in the control models at the same flexion degrees. There were increased loadings at 30° and 90° flexions in the sagittal patellar tilt models. CONCLUSION: This study revealed that sagittal plain malpositioning of the patellofemoral joint might be related to chondromalacia, especially in the presence of lesions in the upper and lower part of the patella. This condition leads to supraphysiological loadings on the patellofemoral joint. Sagittal patellar tilt should be considered in the evaluation and management of patellar cartilage defects. Taking sagittal plane malalignment into consideration in patellofemoral joint evaluation will enable us to design new physical and surgical modalities. LEVEL OF EVIDENCE: IV.

The relationship between quadriceps strength and joint position sense, functional outcome and painful activities in patellofemoral pain syndrome.

PURPOSE: The aim of this study was to investigate how strongly the concentric and eccentric quadriceps strengths were correlated with the joint position sense, functional outcomes and painful activities in patients with patellofemoral pain syndrome (PFPS). METHODS: The study included forty-six women diagnosed with unilateral PFPS. Eccentric and concentric quadriceps strengths were recorded at 60 and 180°/s. Active knee joint position sense (JPS) was measured at 20° and 60° of flexion. Functional levels were determined by using Kujala patellofemoral scores. Pain levels during stair descending and ascending, squatting and prolonged sitting were measured using 0-10 cm visual analogue scale. The relationship of isokinetic quadriceps strength with JPS results, Kujala score and pain levels were evaluated using Spearman's correlation coefficient test. RESULTS: Eccentric and concentric quadriceps strengths were significantly lower on involved side than uninvolved side. JPS results were poorer on the painful knee when compared to uninvolved side. While eccentric strength correlated with both JPS target angles, concentric strength was correlated only with 20°. Both eccentric and concentric strengths were significantly correlated with Kujala scores and pain levels. CONCLUSION: Quadriceps eccentric strength was correlated more to joint position sense than concentric strength. Both eccentric and concentric quadriceps strength related to pain and functional level in PFPS patients.

The effects of the sagittal plane malpositioning of the patella and concomitant quadriceps hypotrophy on the patellofemoral joint: a finite element analysis.

PURPOSE: Anterior knee pain is a common symptom after intramedullary nailing in tibia shaft fracture. Moreover, patellofemoral malalignment is also known to be a major reason for anterior knee pain. Patellofemoral malalignment predisposes to increased loading in patellar cartilage. In the previous study, we have demonstrated the quadriceps atrophy and patellofemoral malalignment after intramedullary nailing due to tibia shaft fracture. In this study, our aim was to clarify the effects of quadriceps atrophy and patellofemoral malalignment with the pathologic loading on the joint cartilage. METHODS: Mesh models of patellofemoral joint were constructed with CT images and integrated with soft tissue components such as menisci and ligaments. Physiological and sagittal tilt models during extension and flexion at 15°, 30° and 60° were created generating eight models. All the models were applied with 137 N force to present the effects of normal loading and 115.7 N force for the simulation of quadriceps atrophy. Different degrees of loading were applied to evaluate the joint contact area and pressure value with the finite element analysis. RESULTS: There was increased patellofemoral contact area in patellar tilt models with respect to normal models. The similar loading patterns were diagnosed in all models at 0° and 15° knee flexion when 137 N force was applied. Higher loading values were obtained at 30° and 60° knee flexions in sagittal tilt models. Furthermore, in the sagittal tilt models, in which the quadriceps atrophy was simulated, the loadings at 30° and 60° knee flexion were higher than in the physiological ones. CONCLUSIONS: Sagittal malalignment of the patellofemoral joint is a new concept that results in different loading patterns in the patellofemoral joint biomechanics. This malalignment in sagittal plane leads to increased loading values on the patellofemoral joint at 30° and 60° of the knee flexions. This new concept should be kept in mind during the course of diagnosis and treatment in patients with anterior knee pain. Definition of the exact biomechanical effects of the sagittal tilting will lead to the development of new treatment modalities.

Can standing knee radiographs predict chondral lesions in young- and middle-aged population?

PURPOSE: The aim of the study is to investigate the correlation between arthroscopic findings and joint space width on the standing knee radiographs at various flexion degrees in the young- and middle-aged patients with complaints of knee pain. METHODS: Middle-aged patients with complaint of knee pain ongoing more than 6 months and failure in conservative treatment methods were included. Weight-bearing full extension, 30 and 45° of flexion radiographs were obtained. Joint space width was calculated on radiograms. Arthroscopy was performed to evaluate the chondral pathologies. Correlation analysis was performed. RESULTS: Fourty-three patients (18 female, 25 male) with a mean age of 44.6 (20-63) were included. Mean joint space width was 4.87 mm ± 1.45 (2-10) mm in medial and 5.43 mm ± 1.47 (1-9) in lateral on standing extension radiographs. In 30° flexion radiographs, mean joint space width was 4.33 mm ± 1.25 (1.5-7.5) in medial and 5.36 mm ± 1.69 (1-9) in lateral. In 45° flexion radiographs, medial joint space was 4.28 mm ± 1.59 (2-9) in medial and 5.15 mm ± 1.59 (1.5-9) in lateral. In arthroscopic evaluation, one knee had grade 1 (2.3%), three knees had grade 2 (7%), nine knees had grade 3 (20.9%), and twelve knees had grade 4 (27.9%) lesions in the medial compartment. In the lateral compartment, two knees had grade 3 (4.7%) and one knee had grade 4 lesion (2.3%). Radiological data did not correlate with the arthroscopic findings. CONCLUSION: Standing knee radiographs do not correlate with the arthroscopic findings in the middle-aged population with chondral lesions in knee joint. LEVEL OF EVIDENCE: Case series with no comparison group, Level IV.

Is there a relationship between tracking ability, joint position sense, and functional level in patellofemoral pain syndrome?

PURPOSE: This prospective cohort study investigated proprioception and motor control changes in patients with patellofemoral pain syndrome (PFPS), and how these changes related to knee function, pain, muscle strength and muscle endurance. METHODS: The study included 43 women diagnosed with unilateral patellofemoral pain syndrome. Thirty-one healthy women were recruited as control group. Peak quadriceps femoris and hamstring muscle isokinetic torques were recorded at 60 and 180°/s. Joint position sense was tested by active reproduction of joint position during horizontal squat performance. Muscle coordination and motor control ability were tested by a multi-joint lower limb tracking-trajectory test. Muscle endurance was tested using a computerized functional squat system. Severity of pain in during stair ascent/descent, squatting, and prolonged sitting with knees 90° flexed were measured using a 10 category modified visual analogue scale. Functional levels of patients were determined using Kujala patellofemoral scores. RESULTS: Active reproduction of joint position did not differ between PFPS and control groups. However, tracking-trajectory error was significantly higher in PFPS group than control subjects. Hamstring and quadriceps peak isokinetic torque and muscle endurance scores were significantly lower in the PFPS group. Kujala patellofemoral score displayed significant relationships with peak isokinetic quadriceps torque, knee pain, and joint position sense scores. Pain during stair descent, sitting, and quadriceps torque at 180°/s explained 57.7 % of the variation in Kujala patellofemoral score. CONCLUSION: Although lower extremity joint position sense did not differ between groups, the PFPS group displayed a target-trajectory muscular coordination deficit, decreased muscular endurance, and decreased muscular strength compared to control group subjects. Pain level directly related to motor control performance while joint position sense scores did not. Knee pain and impaired strength related more to functional performance impairment than joint position sense scores in patients with PFPS.

Proprioception level after endoscopically guided percutaneous Achilles tendon.

PURPOSE: To evaluate ankle function following endoscopically guided percutaneous Achilles tendon repair. The hypothesis of this study was that patients with percutaneous repair of the Achilles tendon would still display impaired involved side ankle proprioception. METHODS: Nineteen male patients with percutaneous Achilles tendon surgery were tested for bilateral ankle active angle reproduction at 10° dorsiflexion and 15° plantar flexion, peak concentric isokinetic ankle dorsiflexor and plantar flexor torque, one-leg hop for distance, and single-leg vertical jump height. Dominant sides of age- and sex-matched 19 healthy controls were evaluated for ankle active angle reproduction at 10° dorsiflexion and 15° plantar flexion, peak concentric isokinetic ankle dorsiflexor and plantar flexor torque. RESULTS: Peak isokinetic torque, one-leg hop for distance, single-leg vertical jump for height and ankle joint position sense at 10° dorsiflexion did not differ between the affected and unaffected side. Ankle joint position sense for active angle replication at 15° plantar flexion revealed a significant side-to-side difference. Joint position sense at 10° dorsiflexion and at 15° plantar flexion at affected side was poor in patients compared with the controls, while joint position sense at 10° dorsiflexion and at 15° plantar flexion at unaffected side was same in patients compared with the controls. CONCLUSIONS: It has revealed a significant difference in joint position sense at plantar flexion of the patients at least 1 year after percutaneous Achilles tendon surgery compared to their unaffected limb. Large prospective longitudinal studies are needed to evaluate therapeutic interventions designed to improve proprioception.

Arthroscopy-assisted reduction versus open reduction in the fixation of medial malleolar fractures.

PURPOSE: Purpose of this case-control study was to evaluate the feasibility and advantages of arthroscopically assisted reduction and internal fixation of isolated medial malleolar fractures and compare the outcomes with conventional open reduction and internal fixation. METHODS: Forty-seven patients with medial malleolar fractures were grouped into two: arthroscopy-assisted group, and conventional open reduction and internal fixation group. Arthroscopic treatment group consisted of 21 patients. The mean age was 34 years (range: 22-49 years). Conventional open reduction and internal fixation group included 26 patients. The mean age was 42 years (range: 22-58 years). According to Herscovici system, 6 fractures in the arthroscopy group were classified as type-B, 13 fractures as type-C, and 2 fractures were classified as type-D. In both groups, fractures were classified according to Herscovici system. Radiological and clinical outcomes were evaluated according to van Dijk classification and Olerud-Molander scoring system, respectively. RESULTS: The mean follow-up period was 26 months (18-52 months) for arthroscopically assisted group and 38 months (24-58 months) for the conventional group. According to van Dijk classification, there was only one patient with Grade 1 osteoarthritic changes in arthroscopically assisted group compared with the conventional group where two patients had Grade 2 and one patient had Grade 1 osteoarthritic changes. Median Olerud Scores were 92.3 (75-100) and 86.3 (70-100) for the arthroscopically assisted group and for the conventional group, respectively. The difference was statistically significant (p = 0.015). CONCLUSIONS: With the use of arthroscopically assisted techniques in fixation of isolated medial malleolar fractures, surgeon can evaluate intra-articular surface and reduction that may be of value in the improvement in clinical outcomes over conventional surgical treatment. LEVEL OF EVIDENCE: Case-control study, Level III.

Women with patellofemoral pain syndrome have quadriceps femoris volume and strength deficiency.

PURPOSE: the aim of this study was to assess muscle torque, total volume, and cross-sectional area, and lower limb function of the quadriceps muscle in women with unilateral patellofemoral pain syndrome (PFPS). METHODS: twenty-four women with unilateral patellofemoral pain participated in the study, with each subject acting as their own internal control by using the unaffected limb. quadriceps muscle torque was measured with the Isomed 2000. The total volume and cross-sectional area (CSA) of the quadriceps muscle were measured by using magnetic resonance imaging. Lower limb function was assessed by hop and step-down tests. RESULTS: there was a significant difference in the total volume (P < 0.05) and in the cross-sectional area (P < 0.05) of the quadriceps muscle between affected and unaffected sides. There was a significant difference in the peak torque of the quadriceps muscle at 60°/s between affected and unaffected sides (P < 0.05). There were significant correlations between quadriceps largest CSA and volume on the affected side (P < 0.05) and on the unaffected side (P < 0.05). There were significant negative correlations between the smallest CSA and the peak torque at 180°/s (P < 0.05) and at 60°/s (P < 0.05) on the affected side. CONCLUSIONS: decreased torque, total volume, and CSA of the quadriceps muscle are presented in unilateral with PFPS although cause or effect cannot be established. Large prospective longitudinal studies are needed to detect the changes in the muscle structure and to establish whether these features are a cause of PFPS.

The effects of the synovium on chondrocyte growth: an experimental study.

PURPOSE: The objective of this study was to evaluate the effects of synovium on the proliferation of the cartilage tissue and chondrocytes using a rabbit knee model as an in vivo synovial culture medium. METHODS: Twelve New Zealand rabbits were used as the animal model in this investigation. Standard size chondral and osteochondral cartilage grafts were taken from, respectively, the left and right knees of all the animals. Two groups of 6 animals were formed: in Group I (synovium group), grafts were placed into the synovial tissue and in group II (patellar tendon group) behind the patellar tendon of the corresponding knees. After 4 months, samples were collected and evaluated macroscopically by measuring their dimensions (vertical = D1, horizontal = D2, and depth = D3) and volumes, and histologically by counting the chondrocyte number using camera lucida method. RESULTS: Macroscopically, the increase in average D1, D2, and D3 measurements and volume in the osteochondral specimens were significantly higher compared to the chondral specimens in both groups (P < 0.05). However, no significant difference was observed between the two groups in terms of macroscopic values. Histologically, the mean chondrocyte counts in osteochondral and chondral specimens for Group I (synovium) were 20.2 and 18.1, and for Group II (patellar tendon) were 18.7 and 15.6, respectively. The mean number of chondrocytes was found to be significantly higher in osteochondral specimens than that of chondral specimens in either group (P < 0.05). Overall average chondrocyte count was significantly higher for Group I compared to Group II (P < 0.05). CONCLUSION: Transplantation of the cartilage grafts into the synovial tissue in rabbit knees significantly enhanced the chondrocyte production compared with the group where the grafts were transplanted into intra-articular patellar tendon. The results of this study indicate that native synovial tissue may have the potential to be used as an in vivo culture medium for osteochondral tissue growth.

Proximal humeral physeal widening: little leaguer's shoulder or a variation of normal development?

Little leaguer's shoulder is a syndrome involving the proximal humeral epiphyseal plate and has been reported in adolescent athletes between 13-16 years of age. We present an adolescent case with radiological findings of little leaguer's shoulder syndrome in a non-athletic patient. The patient had applied significant rotational stress to the proximal humeral physis as a result of overuse due to physiotherapy, but the left asymptomatic side appeared more affected radiologically, which led to the idea that this may be a physiological change that occurs in adolescents. We thus evaluated the anteroposterior radiography of 10 healthy male adolescents of the same age with no skeletal or muscular complaints. We demonstrated a minimal widening of the lateral part of the proximal humeral epiphysis in two of these 10 patients. We believe little leaguer's shoulder should also be considered in adolescents with proximal humeral pain and a history of overuse. A larger study must be conducted to investigate whether these finding may be a variation of physiological development.

Scapular Dyskinesis, Shoulder Joint Position Sense, and Functional Level After Arthroscopic Bankart Repair.

BACKGROUND: Scapular kinesia is an important component of glenohumeral rhythm and shoulder stability. No studies have evaluated scapular dyskinesis and its relationship to shoulder proprioception in patients who have undergone arthroscopic Bankart repair (ABR). PURPOSE: To investigate scapular dyskinesis, proprioception, and functional level after ABR. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: This study included 13 male patients who underwent ABR (ABR group; mean age, 30 years; range, 24-36 years) and 13 sex- and age-matched healthy individuals (control group). The age, height, weight, and dominant side of all participants were collected. Scapular dyskinesis was evaluated using the lateral scapular slide test and the scapular dyskinesis test; proprioception was measured by the active angle reproduction test using a smartphone goniometer application, and functional level was assessed using the upper-quarter Y-balance test for dynamic stability as well as the Rowe score and Walch-Duplay score for quality of life and return to activities of daily living. RESULTS: The presence of static scapular dyskinesis in the neutral position, at 45° of abduction, and at 90° of abduction as well as the presence of dynamic scapular dyskinesis was higher in the ABR group compared with the control group (P ≤ .04 for all). Shoulder joint position sense (absolute error) at 40° and 100° of shoulder elevation and shoulder functional level according to the Rowe score were worse in the ABR patients compared with the healthy controls (P ≤ .02 for all). Dynamic scapular dyskinesis was negatively related to shoulder joint position sense at 40° of shoulder elevation (r = -0.64; P = .01). Static scapular movement as measured on the lateral scapular slide test was moderately related to the Rowe score (r = 0.58; P = .03). CONCLUSION: Scapular kinematics and proprioception should be evaluated after ABR. Treatment approaches to improve scapular control and proprioceptive sense should be included in the rehabilitation program for patients after ABR.

Does the right or left hemisphere involvement affect swallowing in patients with hemiplegia?

BACKGROUND: Stroke is one of the most important causes of swallowing difficulty. It is seen in one of every two patients with stroke. Although the swallowing function is controlled by both hemispheres, it is unknown which hemisphere is more dominant than another for controlling the swallowing function. However, the aspiration and pharyngeal phase dysfunction can be seen in right hemisphere involvement while oral phase dysfunction can be seen in left hemisphere involvement. OBJECTIVE: The aim of this study was to investigate whether water swallowing performance, deep cervical flexor muscle endurance, and maximum phonation time were affected in right handed patients with hemiplegia. STUDY DESIGN: The study was designed as a cross-sectional study. METHODS: Patients with unilateral strokes that damaged the right (Group I: n = 37) and left (Group II: n = 20) hemispheres were included. Swallowing difficulties were evaluated with the Turkish version of the Eating Assessment Tool. The water swallowing performance was measured with the 100 ml water swallow test. The muscle endurance (ME) of deep neck flexors was measured in the chin-tuck position. The laryngeal function was measured indirectly with maximum phonation time (MPT). RESULTS: The mean age of patients was 73.54±7.28 years in Group I and the mean age of patients was 73.15±6.94 years in Group II. There were no differences in maximum phonation time, water swallowing performance (swallow volume, capacity, and speed), and swallowing difficulty (p > 0.05). The neck flexor muscular endurance of patients with unilateral strokes that damaged the left hemisphere was better than the patients with unilateral strokes that damaged the right hemisphere (p < 0.05). There was a relationship between MPT and ME, MPT and swallowing difficulty, ME and swallowing difficulty (r:0.637, p:0.000; r:-0.465, p:0.004; r:-0.473, p:0.003 respectively) in the right hemisphere involvement patients. There was a relationship between swallowing difficulty to swallowing volume and swallowing capacity (respectively, r:-0.402 and p:0.014; r:-0.473 and p:0.003) in the patients with unilateral strokes that damaged the right hemisphere. There was no relationship between other parameters in Group I (p > 0.05). There was no relationship between all parameters in Group II (p > 0.05). CONCLUSIONS: This study is the first study to investigate whether water swallowing performance, deep cervical flexor muscle endurance, and maximum phonation time were affected in right handed patients with unilateral strokes that damaged the right or left hemispheres. In light of the findings of the study, it was thought that swallowing should be evaluated in detail especially in hemiplegic patients with right hemisphere involvement. There is a need for studies examining the results of swallowing rehabilitation on right or left hemisphere in hemiplegic individuals.

Lower extremity alignment due to patellofemoral syndrome and dynamic postural balance.

STUDY DESIGN: This study is a prospective study. AIM: Lower extremity malalignment is an important etiologic factor in patellofemoral pain syndrome (PFPS). We hypothesized that lower limb malalignment may affect dynamic balance and physical function. This prospective study was conducted to investigate the relationship between the lower limb alignment and the dynamic balance and physical function in patients with PFPS. METHODS: The study included 62 individuals with unilateral PFPS. Pain severity was assessed by the numerical pain scale and the pain duration was recorded. Lower extremity bone alignment was evaluated by the lateral distal femoral angle (LDFA) and the medial proximal tibia angle. Dynamic postural balance was assessed by the star excursion balance test. The functional status of the patients was evaluated by the 30-second chair stand test. RESULTS: The mean duration of the pain was 24.2 ± 31.5 months and the mean pain severity was 8.1 ± 1.4. Although there was a significant difference found between the affected and unaffected LDFA values of lower extremities (p < 0.05), there was no difference found with regard to the dynamic balance values of the lower extremities (p > 0.05). However, significant changes of posterolateral balance were identified at a painful side without causing a postural dynamic imbalance (p < 0.05). CONCLUSION: In our study, we found a valgus deformity as a deterioration in the lower limb alignment of patients with PFPS which may cause a deterioration of posterolateral balance only. However, no change in postural dynamic balance was observed in the comparison of affected side and unaffected side. Dynamic postural balance has been influenced by many kinematic changes related to lower extremities including pelvis, hip, and ankle. Thus, reciprocal mechanisms in the anatomical structures may compensate the postural balance dynamically.

Evaluation of Plantar Foot Sensation, Balance, Physical Performance, and Fear of Movement in Substance Use Disorders.

BACKGROUND: Neuropathologic changes may occur in the nervous system due to long-term substance use, leading to functional disability with altering of balance. We know little about substance-related mechanisms that can cause movement disorders. This study investigated the effects of plantar foot sensation and balance on physical performance as an effect of substance use in detoxified patients. METHODS: Twenty-three users of cannabis, volatile agents, or narcotic/stimulant agents alone or in combination for at least 1 year (mean age, 27.6 years) and 20 healthy volunteers (mean age, 24.6 years) were included. Participant evaluations were implemented immediately after the detoxification process with psychiatrist approval. Depression, state-trait anxiety, and fear of movement levels were evaluated with the Beck Depression Inventory, State-Trait Anxiety Inventory, and Tampa Scale for Kinesiophobia, respectively. Plantar foot sensations were evaluated with light touch, two-point discrimination, and vibration examinations. Balance was assessed with balance software and a balance board and force platform. Balance path, balance path distance, and center of pressure were recorded. Physical performance was evaluated with the Timed Up and Go (TUG) test in the final step. RESULTS: There was a significant difference in two-point discrimination of patients versus controls (P < .05). Significant differences were also found in balance values, particularly in the sagittal direction (P < .05). TUG test results of patients compared with controls showed a negative influence on physical function (P < .05). CONCLUSIONS: Detailed examination should be performed to understand movement disorders in substance users. Herein, substance users had impaired two-point discrimination and sagittal balance reciprocally. Thus, customized physiotherapy approaches to substance users should be considered to improve their movement disorders.

Hallux valgus in patients with patellofemoral pain syndrome.

The aim of this study was to investigate the presence of hallux valgus (HV) in patellofemoral pain syndrome (PFPS). Ninety-nine patients with unilateral patellofemoral pain participated. The study was designed with each subject acting as their own internal control by using the unaffected limb for comparison. The HV and intermetatarsal angles were measured by weight-bearing anteroposterior radiographs in patients. Eighty-four out of 99 patients had an abnormal HV angle on the affected side and 78 of 99 patients had an abnormal HV angle on the unaffected side. There were significant differences in the HV angle between affected and unaffected sides (P = 0.003). This study is the first to demonstrate the relationship between HV and PFPS. Further comprehensive biomechanical studies are warranted to analyse the relationship between HV and PFPS.

Percutaneous suturing of the ruptured Achilles tendon with endoscopic control.

INTRODUCTION: A prospective study of modified percutaneous Achilles tendon repair performed between 1999 and 2005 under local infiltration anesthesia is presented; the study evaluated the results of percutaneous repair technique by visualization of the synovia under endoscopic control, followed by early functional postoperative treatment for surgical intervention of acute Achilles tendon ruptures. PATIENTS: Sixty-two patients (58 males, 4 females, mean age 32) were treated by percutaneous suturing with modified Bunnel technique under endoscopic control within 10 days after acute total rupture. Physiotherapy was initiated immediately after the operation and patients were encouraged to weight-bearing ambulation with a walking brace-moon boot as tolerated. Full weight-bearing was allowed minimum after 3 weeks postoperatively without brace. RESULTS: The procedure was tolerated in all patients. There were no significant ROM limitation was observed. Two patients experienced transient hypoesthesia in the region of sural nerve that spontaneously resolved in 6 months. Fifty-nine patients (95%) including professional athletes returned to their previous sportive activities, while 18 of them (29%) had some minor complaints. The interval from injury to return to regular work and rehabilitation training was 11.7 weeks (10-13 weeks). At the latest follow-up (mean: 46 months; range: 12-78 months), all the patients had satisfactory results with a mean American Orthopedic Foot and Ankle Society's ankle-hindfoot score of 94.6. No re-ruptures, deep venous thrombosis or wound problems occurred. CONCLUSION: The proposed method offers a reasonable treatment option for acute total Achilles tendon rupture with a low number of complications. The rerupture rate and return to preinjury activities are comparable to open and percutaneous without endoscopic control procedures.

Is there a relationship between plantar foot sensation and static balance, physical performance, fear of falling, and quality of life in hemodialysis patients?

INTRODUCTION: This study was conducted to investigate the relationship between plantar foot sensation and static balance, physical performance, fear of falling, and quality of life in hemodialysis patients. MATERIALS AND METHODS: The study involved 24 hemodialysis patients and 20 healthy volunteers. Light touch-pressure sensation (Semmes Weinstein Monofilament test kit), two-point discrimination sensation (esthesiometer) and vibration sensation (128 Hz diapason) were used to evaluate plantar foot sensation. Static balance was assessed by the one-leg standing balance test, physical performance by the Timed Up and Go test, fear of falling with the Fall Efficacy Scale, and quality of life with the Ferrans and Powers Quality of Life Index Dialysis Version. FINDINGS: There was a significant difference in plantar foot sensation, static balance, and physical performance of the patients compared to the healthy controls (P < 0.05). There was a strong correlation between static balance and physical performance with foot sensation in the hemodialysis patients (P < 0.05). There was also a strong correlation between static balance, physical performance, and fear of falling in hemodialysis patients (P < 0.05). The correlation between static balance, physical performance, and quality of life in the hemodialysis patients was strong (P < 0.05). DISCUSSION: The most important result of this study is that light touch-pressure sensation, vibration sensation, two-point discrimination sensation, static balance, and physical performance, all of which involve the activity of cutaneous sensory receptors on the sole of the foot, are reduced in individuals who undergo hemodialysis. The findings of this study suggest potential rehabilitation strategies that could be applied to this patient group.

Effects on Lower Extremity Neuromuscular Control Exercises on Knee Proprioception, Muscle Strength, and Functional Level in Patients with ACL Reconstruction.

OBJECTIVE: The purpose of this study was to determine the effects of lower extremity motor control exercises on knee proprioception, muscle strength, and functional level in patients with anterior cruciate ligament reconstruction (ACL-R). MATERIALS AND METHODS: Thirty-two of the 57 patients with ACL-R using tibialis anterior allografts were divided into two groups. Group I: lower extremity motor control exercises were added to the standard rehabilitation program. Group II: standard rehabilitation program was applied. Effects of lower extremity motor control exercises on quadriceps and hamstring muscles strength, knee joint position sense, and hop test were evaluated. RESULTS: There were no differences in muscle strength and endurance of the quadriceps and hamstring between the operative and nonoperative sides in Group I (p > 0.05) while there were significant differences in strength of the quadriceps and hamstring between the operative and nonoperative sides in Group II (p < 0.05). There were significant differences in the endurance of the quadriceps and hamstring and knee joint position sense at 15°, 45°, and 75° between the operative sides of the patients in both groups (p < 0.05). CONCLUSIONS: The neuromuscular control exercises program was found to be more effective in reducing the difference in strength while the standard program was found to be more effective in reducing the difference in endurance between the operated knee and the other knee. This study revealed that neuromuscular control exercises should also be used to improve knee proprioception sense following ACL-R.