Knee Range Of Motion Measurements Research Articles

Physiologic Preoperative Knee Hyperextension Is Not Associated With Postoperative Laxity, Subjective Knee Function, or Revision Surgery After ACL Reconstruction With Hamstring Tendon Autografts.

There is concern that physiologic knee hyperextension may be associated with inferior outcomes after anterior cruciate ligament reconstruction (ACLR) using hamstring tendon (HT) autografts. To assess whether there is an association between contralateral passive preoperative knee hyperextension (≤-5°) and postoperative anterior knee laxity, subjective knee function, or revision surgery after ACLR using HT autografts. Cohort study; Level of evidence, 3. Patients without concomitant ligament injuries who underwent primary ACLR using an HT autograft at Capio Artro Clinic, Stockholm, Sweden, between January 1, 2005, and December 31, 2018, were identified. The cohort was dichotomized into the hyperextension group (≤-5°) and the no hyperextension group (>-5°) depending on preoperative contralateral passive knee extension degree. Anterior knee laxity (KT-1000 arthrometer; 134 N) was assessed preoperatively and at 6 months postoperatively. The Knee injury and Osteoarthritis Outcome Score (KOOS) was collected preoperatively and at 1, 2, and 5 years postoperatively. Patients who underwent revision ACLR at any institution in Sweden within 5 years of the primary surgery were identified in the Swedish National Knee Ligament Registry. A total of 6104 patients (53.5% male) for whom knee range of motion measurements were available were identified (hyperextension group [≤-5°]: 2350 [38.5%]; mean extension, -6.1°± 2.3° [range, -20° to -5°]; no hyperextension group [>-5°]: 3754 [61.5%]; mean extension, 0°± 1.4° [range, -4° to 15°]). There were no intergroup differences in anterior knee laxity preoperatively (hyperextension group, 3.6 ± 2.8 mm; no hyperextension group, 3.7 ± 2.7 mm; P = .24) or postoperatively (hyperextension group, 1.8 ± 2.3 mm; no hyperextension group, 1.8 ± 2.2 mm; P = .41). The only significant but nonclinically relevant intergroup differences were seen in the KOOS Symptoms subscale at the 1-year follow-up (hyperextension group, 81.4 ± 16.0; no hyperextension group, 80.3 ± 16.5; P = .03) and in the Sport and Recreation subscale at the 5-year follow-up (hyperextension group, 73.0 ± 25.6; no hyperextension group, 75.7 ± 24.3; P = .02). No other significant intergroup differences were noted preoperatively or at 1, 2, or 5 years postoperatively in any of the KOOS subscales. The overall revision ACLR rate at ≤5 years after the primary surgery was 4.9% (302 of 6104 patients). The hazard for revision ACLR in the no hyperextension group (4.5%; 170 of 3754 patients) was not significantly different from that in the hyperextension group (5.6%; 132 of 2350 patients) (hazard ratio, 0.89; 95% CI, 0.71 to -1.12; P = .34). A subsequent subanalysis showed that the hazard of revision ACLR in patients with no hyperextension was not significantly different from that of patients with ≤-10° of extension (5.8%; 27 of 467 patients) (hazard ratio, 0.91; 95% CI, 0.61 to 1.36; P = .65). Preoperative passive contralateral knee hyperextension (≤-5°) was not associated with postoperative anterior knee laxity, subjective knee function, or revision surgery ≤5 years after ACLR using HT autografts. Therefore, the presence of knee hyperextension alone should not be considered a contraindication per se for the use of HT autografts in ACLR.

Development and Validation of a Mobile Phone Application for Measuring Knee Range of Motion.

Knee range of motion (ROM) is an important indicator of knee function. Outside the clinical setting, patients may not be able to accurately assess knee ROM, which may impair recovery following trauma or surgery. This study aims to validate a smartphone mobile application developed to measure knee ROM compared to visual and goniometer ROM measurements. A knee ROM Android mobile application was developed to measure knee ROM. Patients ≥ 18 years old presenting to an orthopaedic clinic with native knee complaints were approached to participate. Knee ROM was measured bilaterally by an arthroplasty-trained surgeon using (1) vision, (2) goniometer, and (3) the mobile application. Measurements were compared in flexion and extension using a one-way analysis of variance with post hoc Tukey test (alpha = 0.05). Eighty-four knee ROM measurements (40 left, 44 right) were obtained in 47 patients. Median Kellgren-Lawrence grade from available radiographs was grade 3. In flexion, mobile application (117.6 ± 14.7 degrees) measurements were not significantly different from visual (116.1 ± 13.6 degrees) or goniometer (116.2 ± 13.6 degrees) measurements. In extension, mobile application (4.8 ± 7.3 degrees) measurements were significantly different from visual (1.9 ± 4.1 degrees) measurements on post hoc analysis (p < 0.01), while no differences were present compared to goniometer (3.1 ± 5.8 degrees) measurements. Our study found that a mobile application for evaluating knee ROM was noninferior to goniometer-based measurements performed by an arthroplasty-trained surgeon. Future studies will investigate this application's utility in (1) remote patient care, (2) accelerating recovery during rehabilitation, (3) detecting early postoperative complications including arthrofibrosis, and (4) adding additional functionalities to the application to provide more detail-oriented descriptive analyses of patient knee function.

Patellar tendon restoration techniques: a systematic review of outcomes for repair and reconstruction methods.

This systematic review aims to delineate the various methods to repair or reconstruct the patellar tendon using the available literature. MEDLINE and PubMed electronic databases were searched for English language clinical studies involving patellar tendon rupture repair or reconstruction that reported patient-reported outcome scores (PROS) between January 1st, 1953 and June 17th, 2021. Data was extracted on full text articles to collect functional outcome scores and rupture category, including acute, chronic, post-total knee arthroplasty (TKA) and post-anterior cruciate ligament reconstruction (ACLR). Twenty-three studies with a total of 738 patients were included. Of the 14 studies including acute repairs, mean postoperative Lvsholm scores ranged from 84 to 99.5. Knee Society Score (KSS) and knee range of motion (ROM) measurement were the most widely reported outcomes in the chronic setting. The average postoperative KSS scores ranged from 70 to 87.7. Of the six studies that included patellar tendon repairs/reconstructions in the setting of prior TKA, the most frequently reported outcomes were KSS scores and knee ROM measurements. The average postoperative KSS scores for the three cohorts reporting reconstruction with allograft ranged from 79 to 88 as compared to the average postoperative KSS score for reconstruction with autograft of 70. Despite this heterogeneity, we concluded: (1) in the primary setting, cerclage augmentation yields the lowest lysholm scores and should not be considered, although primary repairs with and without augmentation yield comparable postoperative lysholm scores, (2) in the chronic setting, repair with augmentation and reconstruction yielded similar results aside from in post-TKA patients where allograft reconstruction yielded superior KSS scores.

A Prospective Randomized Controlled Trial Investigating Quadriceps Versus Hamstring Tendon Autograft in Anterior Cruciate Ligament Reconstruction

Background: Numerous graft options are available when undertaking anterior cruciate ligament (ACL) reconstruction (ACLR), although a lack of high-quality evidence exists comparing quadriceps (QT) and hamstring (HT) autografts. Purpose: To investigate patient outcomes in patients undergoing HT versus QT ACLR. Study Design: Randomized controlled trial; Level of evidence, 1. Methods: After recruitment and randomization, 112 patients (HT = 55; QT = 57) underwent ACLR. Patients were assessed pre- and postoperatively (6 weeks and 3, 6, 12, and 24 months), with a range of patient-reported outcome measures (PROMs), graft laxity (KT-1000 arthrometer; primary outcome variable), active knee flexion and extension range of motion (ROM), peak isokinetic knee extensor and flexor strength, and a 6-hop performance battery. Limb symmetry indices (LSIs) were calculated for strength and hop measures. Secondary procedures, ACL retears, and contralateral ACL tears were reported. Results: All PROMs and knee ROM measures significantly improved (P < .0001), and no other group differences (P > .05) were observed—apart from the Anterior Cruciate Ligament Return to Sport after Injury (ACL-RSI) score, which was significantly better in the HT group at 3 (P = .008), 6 (P = .010), and 12 (P = .014) months. No significant changes were observed in side-to-side laxity from 6 to 24 months (P = .105), and no group differences were observed (P = .487) at 6 (HT mean, 1.2; QT mean, 1.3), 12 (HT mean, 1.1; QT mean, 1.3), and 24 (HT mean, 1.1; QT mean, 1.2) months. While the HT group demonstrated significantly greater (P < .05) quadriceps strength LSIs at 6 and 12 months, the QT group showed significantly greater (P < .05) hamstring strength LSIs at 6, 12, and 24 months. The HT group showed significantly greater (P < .05) LSIs for the single horizontal (6 months), lateral (6 and 12 months), and medial (6 months) hop tests for distance. Up until 24 months, 1 patient (QT at 22 months) had a retear, with 2 contralateral ACL tears (QT at 19 months; HT at 23 months). Secondary procedures included 5 in the HT group (manipulation under anesthesia, notch debridement, meniscal repair, and knee arthroscopy for scar tissue) and 6 in the QT group (notch debridement, meniscal repair, knee arthroscopy for scar tissue, tibial tubercle transfer, and osteochondral autologous transplantation). Conclusion: Apart from the ACL-RSI, the 2 autograft groups compared well for PROMs, knee ROM, and laxity. However, greater hamstring strength LSIs were observed for the QT cohort, with greater quadriceps strength (and hop test) LSIs in the HT cohort. The longer-term review will continue to evaluate return to sports and later-stage reinjury between the 2 graft constructs. Registration: ACTRN12618001520224p (Australian New Zealand Clinical Trials Registry).

Comparison of a Smartphone App to Manual Knee Range of Motion Measurements

BackgroundDigital technology has emerged as a useful tool for preoperative and postoperative patient engagement and for remote patient monitoring. Smartphones are equipped with motion-sensing technology, and apps can be designed which use these features to create a simple method for measuring range of motion. The purpose of this study was to determine the accuracy of digital technology in assessing knee range of motion using a smartphone app, compared to traditional goniometric measurements in an office setting.MethodsFifty-three (53) patients in a clinical practice were enrolled between October 2019 and March 2020. Three separate measurements were taken during the patient encounter: (1) the surgeon, (2) the app, and (3) the physical therapist. Intraclass correlations were computed to assess the agreement between (1) the surgeon and app and (2) that between the physical therapist and surgeon.ResultsWhen measuring flexion, the correlation between either the surgeon or therapist with the app was good, whereas the comparison between the surgeon and therapist was moderate. All extension measurement comparisons, between the app, surgeon, and therapist, showed moderate correlation. Limits of agreements showed that 80% of the difference between surgeon and app is within 10 degrees for extension and 11 degrees for flexion. Body mass index did not affect the accuracy of the measurements.ConclusionDigital app measurements were comparable to measurements made by either a surgeon or physical therapist with a manual goniometer in the clinical setting and may be beneficial for measuring and monitoring patients’ range of motion remotely.

Can a Patient use an App at Home to Measure Knee Range of Motion? Utilizing a Mobile App, Curovate, to Improve Access and Adherence to Knee Range of Motion Measurements.

IntroductionKnee range of motion is a critical measure of progress after knee injury and knee surgery. However, many patients do not understand the importance of knee range of motion and most do not have a way to self-monitor their knee range of motion at home. The patient being able to measure their own range of motion can provide improved access to this critical health metric, and could improve adherence with their daily knee range of motion exercises. The purpose of this technical report is to determine if a mobile app, Curovate, can provide reliable measures of knee range of motion compared to standard goniometric measurements.ProceduresThere were four positions of knee flexion and four positions of knee extension each measured twice with a standard goniometer and four different mobile devices with the app Curovate. The reliability and validity of the Curovate app was tested across mobile devices and operating systems and compare to goniometric knee range of motion measurements. A total of 80 measurements were taken. All testing was completed on a healthy 23-year-old male with no knee pathology.ResultsA strong positive correlation, Pearson’s r > = 0.9985, for all positions of knee flexion and extension across all four mobile devices as well as each mobile device compared to standard goniometric measurements.ConclusionsThis article presents a unique method for patients to measure their knee range of motion using the mobile app Curovate. Overall, the mobile app, Curovate, was found to have a strong positive correlation across four mobile devices with varying operating systems and compared to goniometric measurements.Level of evidence4

Comparison of the Effectiveness of Two Management Strategies in the Pandemic COVID-19 Period in Patient Visits (Face-to-Face Visits vs. a Smartphone) in follow-up the Range of Motion of the Knee in Patients with Anterior Cruciate Ligament Reconstruction.

As the prevalence of the coronavirus increases, there is now more emphasis on reducing "face-to-face" patient visits. Therefore, the use of smartphones and their special medical applications can play an important role in following up patients. The aim of this study was to evaluate the use of smartphone in evaluating clinical outcomes and range of motion (ROM) of patients after anterior cruciate ligament reconstruction (ACLR). From January to December 2020, 112 patients between 20 and 50 years old were randomly selected at our orthopedic sports center. All patients were visited online through smartphone by a knee fellowship surgeon in the morning (case group) and again all of them were visited online through smartphone in the evening by another knee fellowship surgeon (control group). Both visits were done at regular intervals in the 2nd, 6th, and 12th week after surgery. Patients were evaluated for function outcomes and joint ROM. The two groups were similar in terms of mean International Knee Documentation Committee score, Lysholm knee score, and Tegner Knee Score and did not show statistically significant difference (P < 0.05) There was no significant difference in knee ROM measurements between the two groups (face-to-face visits and online through smartphone visits) during the follow-ups (P > 0.05). Smartphone apps are highly effective in assessing postoperative condition of knee ROM after ACLR, especially in the short time. However, this ability has been reduced in evaluating the long term. Hence, evaluation is still necessary through direct examination in the presence visit.

Kinesiophobia in rheumatoid arthritis patients: Relationship with quadriceps muscle strength, fear of falling, functional status, disease activity, and quality of life.

Objectives This study aims to determine the frequency of kinesiophobia in rheumatoid arthritis (RA) patients and to evaluate the relation of kinesiophobia with the knee range of motion (ROM), quadriceps muscle strength, fear of falling, functional status, disease activity, depression, and quality of life.Patients and methods Between September 2018 and September 2019, a total of 100 RA patients (25 males, 75 females; mean age: 56.1±9.3 years; range, 32 to 69 years) and 50 healthy controls (14 males, 36 females; mean age: 54.6±9.8 years; range, 30 to 69 years) were included. Disease activity was evaluated using the Disease Activity Score 28 (DAS28), and functional status using the Health Assessment Questionnaire (HAQ). Pain severity was measured using the Visual Analog Scale (VAS). Tampa Kinesiophobia Scale (TKS) was used to evaluate kinesiophobia. Quadriceps muscle strength and knee ROM measurements of two extremities were recorded. Depression was evaluated using the Beck Depression Inventory (BDI), fear of falling by Falls Efficacy Scale (FES) and quality of life using the Short Form-36 (SF-36).Results The rate of kinesiophobia was 70% in RA patients and 12% in controls, indicating a higher rate in RA patients, compared to controls (odds ratio [OR] = 44.861, 95% confidence interval [CI]: 42.571-49.052; p<0.05). This rate was 76% in females and 52% in males. Regression analysis revealed that the number of swollen and tender joints, DAS28, VAS-pain, and HAQ scores were positively associated with the TKS scores (p<0.05). Quadriceps muscle strength and knee flexion were negatively associated with the TKS scores (p<0.05). The TKS was significantly correlated with FES and BDI (p<0.05). The TKS was negatively correlated with SF-36 subscales (p<0.05).Conclusion Kinesiophobia is common in RA patients. Our study is the first to evaluate the frequency of kinesiophobia in RA patients and to show pain level, disease activity, functional status, knee flexion ROM, and quadriceps muscle strength are effective on kinesiophobia. Kinesiophobia is also associated with fear of falling and depression, negatively affecting the quality of life in terms of physical, emotional, social and mental functions. Therefore, evaluating kinesiophobia and developing targeted treatment approaches seem to be useful in increasing the quality of life in RA.

The Effect of Foam Rolling Versus IASTM on Knee Range of Motion, Fascial Displacement, and Patient Satisfaction.

Soft tissue restrictions have been linked to poor flexibility and decreased range of motion (ROM). To decrease the soft tissue restrictions and ultimately increase ROM/flexibility, myofascial release techniques, such as foam rolling (FR) and instrument-assisted soft tissue mobilization (IASTM), have been used. However, the benefit regarding which technique is more beneficial remains unknown. To examine the effects of myofascial release techniques (FR vs the instrumented portion of IASTM) on knee joint ROM, rectus femoris (RF) and biceps femoris (BF) fascial displacement, and patient satisfaction. Randomized controlled clinical trial. Mid-Atlantic University. Twenty moderately active participants (age 21.1 [2.0]y) with variable levels of soft tissue restriction in the quadriceps and hamstrings started and completed the study. Participants were randomly assigned to 2 groups, FR or IASTM. All participants completed the same warm-up prior to the intervention. The FR group followed the proper FR protocol for gluteals/iliotibial band, quadriceps, and hamstrings/adductors, and the participants were monitored while the protocol was completed. The IASTM group received treatment on the gluteals/iliotibial band followed by the quadriceps, adductors, and hamstrings. Participants in both groups attended intervention sessions twice per week for 3 weeks. Prior to the start, knee ROM measurements were taken, along with fascial displacement measured via ultrasound. Upon completion of the study, posttest measurements were completed. A patient satisfaction survey was also administered at this time. Pretest to posttest knee ROM measurements, RF and BF fascial displacement, and patient satisfaction. Both groups improved pretest to posttest for knee-extension ROM, with a slight trend toward increased knee-extension ROM for the FR group. Both groups improved pretest to posttest for BF and RF fascial displacement, in favor of the IASTM group for BF fascial displacement. Both groups were equally satisfied. As both groups improved pretest to posttest, either treatment could be used.

Bicruciate-retaining vs. posterior-stabilized TKA: A prospective RCT

There has been a resurgence of popularity in performing bicruciate-retaining (BCR) total knee arthroplasty (TKA) as opposed to the more common posterior-stabilized (PS). BCR may be better for young and active patients since it restores knee kinematics better than other prosthetic designs. However, there is a belief in the community that BCR results in stiffer knees. There is not yet any study that shows clear clinical differences between BCR and PS TKAs. This study aims to clarify this point of contention. A prospective randomized control trial was conducted where patients were randomized to have either BCR or PS TKA implanted using a spacer-based gap balancing technique. A total of 32 BCR and 34 PS knees were evaluated (54 patients). Results were obtained at the preoperative visit and the subsequent postoperative visits up to 2 years and above. In this study, knee range of motion measurements, Knee injury and Osteoarthritis Outcome Score (KOOS), as well as Knee Society (KS) knee and function scores were compared between groups and visits. There was a significant difference in maximum knee flexion between BCR and PS patients at 6 weeks (BCRmean 94.8°, PSmean 113.6°, P < 0.001), 6 months (BCRmean 109.5°, PSmean 123.2°, P 0.017), and 12 months (BCRmean 113.5°, PSmean 126.1°, P 0.003). No significant difference was found between the two groups at 2 years (BCRmean 120.4°, PSmean 128.0°, P 0.087). Similar results were found when the knees with a preoperative maximum flexion ≥ 130° were analyzed separately. The KOOS and KS knee and function scores were globally similar at every visit between the groups as neither yielded significant differences, with the exception of the KOOS score at 6 weeks that was higher for PS knees. The results confirm the suspicion that BCR TKA results in stiffer knees than PS TKA during the early postoperative period. However the difference in maximum flexion decreased and tended to resolve by the 2-year postoperative visit. The difference also did not seem to have an impact on the various clinical and functional outcome measurements that were collected after 6 weeks. BCR TKA does not result in stiffer knees than PS TKA after 2 years. There appears to be a stiffening phenomenon that occurs after BCR TKA compared to PS TKA but it seems to resolve over time. Further investigation on the causes of this phenomenon is warranted. Further follow-up of this patient cohort will provide additional relevant information.

Platelet-rich plasma (PRP) applied during total knee arthroplasty

ObjectiveTo evaluate the efficacy of platelet-rich plasma regarding healing, pain and hemostasis after total knee arthroplasty, by means of a blinded randomized controlled and blinded clinical study. MethodsForty patients who were going to undergo implantation of a total knee prosthesis were selected and randomized. In 20 of these patients, platelet-rich plasma was applied before the joint capsule was closed. The hemoglobin (mg/dL) and hematocrit (%) levels were assayed before the operation and 24 and 48h afterwards. The Womac questionnaire and a verbal pain scale were applied and knee range of motion measurements were made up to the second postoperative month. The statistical analysis compared the results with the aim of determining whether there were any differences between the groups at each of the evaluation times. ResultsThe hemoglobin (mg/dL) and hematocrit (%) measurements made before the operation and 24 and 48h afterwards did not show any significant differences between the groups (p>0.05). The Womac questionnaire and the range of motion measured before the operation and up to the first two months also did not show any statistical differences between the groups (p>0.05). The pain evaluation using the verbal scale showed that there was an advantage for the group that received platelet-rich plasma, 24h, 48h, one week, three weeks and two months after the operation (p<0.05). ConclusionsIn the manner in which the platelet-rich plasma was used, it was not shown to be effective for reducing bleeding or improving knee function after arthroplasty, in comparison with the controls. There was an advantage on the postoperative verbal pain scale.

Plasma rico em Plaquetas (PRP) aplicado na artroplastia total do joelho

ObjectiveTo evaluate the efficacy of platelet‐rich plasma regarding healing, pain and hemostasis after total knee arthroplasty, by means of a blinded randomized controlled and blinded clinical study. MethodsForty patients who were going to undergo implantation of a total knee prosthesis were selected and randomized. In 20 of these patients, platelet‐rich plasma was applied before the joint capsule was closed. The hemoglobin (mg/dL) and hematocrit (%) levels were assayed before the operation and 24 and 48hours afterwards. The Womac questionnaire and a verbal pain scale were applied and knee range of motion measurements were made up to the second postoperative month. The statistical analysis compared the results with the aim of determining whether there were any differences between the groups at each of the evaluation times. ResultsThe hemoglobin (mg/dL) and hematocrit (%) measurements made before the operation and 24 and 48hours afterwards did not show any significant differences between the groups (p>0.05). The Womac questionnaire and the range of motion measured before the operation and up to the first two months also did not show any statistical differences between the groups (p>0.05). The pain evaluation using the verbal scale showed that there was an advantage for the group that received platelet‐rich plasma, 24hours, 48hours, one week, three weeks and two months after the operation (p<0.05). ConclusionsIn the manner in which the platelet‐rich plasma was used, it was not shown to be effective for reducing bleeding or improving knee function after arthroplasty, in comparison with the controls. There was an advantage on the postoperative verbal pain scale.

An Example of End-Digit Preference in Physiotherapy Practice

Standardizing and improving the validity of range of motion (ROM) measurements is of clinical relevance to physiotherapists. The purpose of this study was to assess whether end-digit preference exists in the measurement of knee ROM in people after knee replacement. Following total knee replacement, 100 people underwent active-assisted knee ROM measurements using a goniometer calibrated in 1° increments. The data showed strong end-digit preferences for 0s and 5s (p<0.001). End-digit preference does exist in the measurement of knee ROM. This has the potential to influence both the validity of ROM measurements and clinical decisions.

The role of active knee rom for posterior thigh muscle injuries prevention

Athletes' physiological characteristics are fundamental both in terms of performance and injuries prevention. One of those is flexibility. Using an easy and cheap method, goniometry, estimating active knee range of...

Interrater Agreement Between Telerehabilitation and Face-to-Face Clinical Outcome Measurements for Total Knee Arthroplasty

Outcome measures in physical therapy provide the basis for determining the patient's rehabilitation needs, developing an individual intervention plan, and reassessing the evolution of the condition after therapeutic intervention. Questions surrounding the validity and reliability of outcome measures obtained in the context of telerehabilitation remain. The goal of this study was to explore which outcome measures can be used reliably in the context of telerehabilitation after discharge from an acute care hospital for lower limb orthopedic surgery. Fifteen patients recently discharged after total knee arthroplasty were evaluated by two experienced therapists. Each therapist evaluated under a given condition (face-to-face assessment, telerehabilitation assessment) eight outcome measures taken from standard clinical tests routinely used in the management of orthopedic rehabilitation after total knee arthroplasty. Evaluations were measured at 1-day intervals. Telerehabilitation evaluations were conducted with a videoconference link (H.264 CoDecs with Pan, Tilt, Zoom cameras) between either the participant's home or a clinical environment and a remote clinical station over residential DSL lines at 512 kbps. Interrater agreement between the two measurement modes was analyzed using the Bland and Altman method and Kripendorff's alpha reliability estimate. The 95% confidence interval for mean difference between evaluation methods varied between -20% and 8% for knee range of motion measures, -85% and 55% for scar management, -33% and 29% for functional evaluations. Five out of the eight outcome measures showed reliability estimates of >0.80, with lowest reliability obtained for the scar assessment scale (0.34) and the highest reliability for the evaluation of the range of motion at the knee (0.87 in flexion and 0.85 in extension). Clinical variables typically measured in face-to-face evaluations can be measured successfully under telerehabilitation conditions with moderate reliability.

Avaliação da amplitude articular do joelho: correlação entre as medidas realizadas com o goniômetro universal e no dinamômetro isocinético

BACKGROUND: The instrument most often used by therapists for measuring joint range of motion (ROM) is the universal goniometer. However, there is a lack of studies analyzing the reliability of knee joint ROM measured by the isokinetic dynamometer. OBJECTIVE: The purpose of this study was to analyze the correlation between the knee joint ROM measurements made using a universal goniometer and an isokinetic dynamometer. METHOD: 38 healthy volunteers (27 women, 11 men) aged 36 ± 11 years were evaluated. All of them had a minimum knee extension ROM limitation of 20°. Three knee ROM measurements were made using the universal goniometer and another three using the isokinetic dynamometer, on each subject's dominant limb. RESULTS: The results showed a high degree of correlation between the knee ROM measurements made using the two instruments (Pearson correlation coefficient = 0.90). CONCLUSION: From the procedures performed, both the universal goniometer and the isokinetic dynamometer can be used to evaluate knee ROM, since they both present reliable measurements.

Abordagem fisioterapêutica em crianças com doença de Legg-Calvé-Perthes submetidas à instalação do artrodistrator: estudo de caso

This study was designed to evaluate a physical therapy treatment (PTT) in a eight-year old male child with Legg-Calve-Perthes disease submitted to artrodistractor equipment, used to perform head femur distraction. Protocol treatment was applied twice a week for seven months, during five of which the child submitted to the PTT was using the equipment. PTT consisted of range of motion (ROM) exercises and hip and knee strength muscle training. Hip and knee ROM measurements were registered at three moments (pre-installation, two weeks after equipment installation and eight weeks after artrodistractor removal) and muscle strength was verified two and eight weeks after artrodistractor removal. Radiographic images were taken four weeks after installation and eight weeks after removal of the artrodistractor, showing joint space preservation. Results indicate improvement of R O M values and hip and knee muscle strength in the affected limb after PTT. According to results, physical therapy programs can be effective for rehabilitation of Legg-Calve-Perthes children submitted to artrodistractor equipment.