Subjective and Objective Outcomes of Ankle Joint Arthrodesis with Either Ilizarov or Internal Fixation.

After arthroplasty, arthrodesis of the ankle joint is the most common method to treat advanced ankle osteoarthritis. The goal of the study was to assess the subjective and objective outcomes in 2 different types of fixation for ankle joint arthrodesis. We retrospectively assessed 47 patients who had undergone ankle joint arthrodesis with fixation either via an Ilizarov apparatus (group 1) (n = 21) or cannulated screws (group 2) (n = 26). The outcomes were measured by: (1) the quantity of analgesics administered, (2) the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, (3) general patient satisfaction, (4) the patients' decision to undergo the same procedure given another chance, and (5) the necessity of blood transfusion during hospitalization. Data was collected at the last postoperative follow-up visit. The AOFAS scores in group 1 and group 2 patients were 73.9 ± 13 and 72.7 ± 14.3, respectively. In group 1, 17 patients (81%) were very satisfied with the results, while in group 2, 19 patients (73%) were very satisfied with the results (p = .043). Two group 1 patients (10%) and four group 2 patients (15.3%) reported that they were satisfied with the outcomes (p = .035). Two patients (10%) from group 1 and three patients (11%) from group 2 were fairly satisfied. Seventeen patients (81%) after arthrodesis with Ilizarov fixation and 21 patients (81%) after arthrodesis with internal fixation would choose the same procedure given the opportunity to choose again. In group 1 there were no patients who required blood transfusion; in group 2 one patient (4%) required blood transfusion; the difference was statistically significant (p = .039). Nineteen group 1 patients (90%) were administered an analgesic preoperatively, while postoperatively only 6 (29%) required analgesics. In group 2, 24 patients (92%) were administered analgesics preoperatively, with 8 (31%) of them still requiring analgesics postoperatively. Ankle arthrodesis patients from both group 1 and group 2 achieved good subjective and objective results of treatment. We noted slightly better results in the Ilizarov apparatus group.

Radiographic Outcomes of Hallux Valgus Deformity Correction With Chevron and Scarf Osteotomies.

There is no gold standard in the treatment of hallux valgus deformity. The purpose of our study was to compare various aspects of radiographic assessment following scarf and chevron osteotomies and try to determine which technique helps achieve a more pronounced intermetatarsal angle (IMA) and hallux valgus angle (HVA) correction and produces lower rates of complications, including adjacent-joint arthritis. This study included patients who underwent hallux valgus correction with the scarf (n = 32) or chevron (n = 181) method with a follow-up period of over 3 years. We evaluated the following parameters: HVA, IMA, duration of hospital stay, complications, development of adjacent-joint arthritis. The scarf technique helped achieve a mean HVA and IMA correction of 18.3° and 3.6°, respectively, and the chevron technique helped achieve a mean correction of 13.1° and 3.7°, respectively. The achieved deformity correction in terms of both the HVA and IMA was statistically significant in both patient groups. The loss of correction assessed with the HVA was statistically significant only in the chevron group. Neither group showed a statistically significant loss of IMA correction. The duration of hospital stay, reoperation rates, and fixation instability rates were comparable in the 2 groups. Neither of the evaluated methods caused a significant increase in total arthritis scores in the evaluated joints. Our study showed good outcomes of hallux valgus deformity correction in both evaluated groups; however, scarf osteotomy yielded somewhat better radiographic outcomes in HVA correction and no loss of HVA correction at 3.5 years of follow-up.

Kinematic parameters after tibial nonunion treatment using the Ilizarov method.

BACKGROUND: Analysis of the outcomes of Ilizarov treatment of tibial nonunion shows functional deficits in the lower limbs of some patients. Biomechanical gait parameters are an important measure for assessing musculoskeletal disorder treatments that aim to restore normal gait. The purpose of our study was to compare the kinematic parameters in patients with tibial nonunion treated using the Ilizarov method and those in a control group of healthy volunteers. METHODS: The study population consisted of 23 patients (age 54.9 ± 16.4 years) who were treated for tibial nonunion using the Ilizarov method, as well as 22 healthy adult controls (age 52.7 ± 10.6 years). Kinematic parameters were measured using a Noraxon MyoMOTION System. We measured hip flexion and abduction, knee flexion, ankle dorsiflexion, inversion, and abduction during walking. RESULTS: Our analysis showed significant differences between the patients' operated limbs (OLs) and the controls' nondominant limbs (NDLs) in the ranges of hip flexion, hip abduction, and knee flexion. We observed no significant differences in knee flexion between the OL and the NOL in patients or between the dominant limb (DL) and NDL in controls. Our evaluation of the kinematic parameters of the ankle joint demonstrated significant differences between the patients' OLs and the controls' NDLs in the ranges of ankle dorsiflexion, ankle inversion, and ankle abduction. There were also significant differences in the range of ankle dorsiflexion and ankle abduction between the patients' NOLs and the controls' DLs. CONCLUSION: Tibial nonunion treatment using the Ilizarov method does not ensure complete normalization of kinematic parameters assessed 24-48 months following the completion of treatment and rehabilitation.

Association of long-term outcome of long cervical fusion with sagittal balance: the significance of T1 slope minus cervical lordosis.

INTRODUCTION: Retrospective study to assess correlation between the sagittal alignment of the cervical spine and the long-term outcomes of long cervical fusion due to cervical spondylotic myelopathy (CSM), with the emphasis on T1 slope minus cervical lordosis (T1S-CL). SUMMARY OF BACKGROUND DATA: Growing evidence shows that the sagittal profile can play a major role in the outcomes of treatment, but the role of its correction is yet to be established. MATERIAL AND METHODS: We conducted a retrospective analysis of 54 patients treated for CSM from 2006 to 2012. The neck pain-related disability was measured using NDI, the myelopathy was measured with the mJOA and Nurick scales. Six years after the surgery, standardised X-ray measurements were obtained, including C2-C7 lordosis (CL), C2-C7 sagittal vertical alignment (SVAC2-C7), T1 slope (T1S), and T1S minus CL (T1S-CL). The patients were divided based on the T1S-CL into two groups, using the threshold value of 16.5 degrees. RESULTS: A statistically significant improvement was noted in the mean NDI, mJOA, and median Nurick scale during the initial two years in both groups. The better aligned group had a better outcome measured with NDI at all follow-ups. The mJOA was significantly better in the better aligned group, but only preoperatively; at all follow-ups, the difference was not significant. T1S-CL had the strongest correlation with the NDI at the final follow-up. CONCLUSIONS: T1S-CL is an effective prognostic factor of the long term outcome after long cervical fusion in CSM treatment.

Assessment of Lower Limb Load Distribution in Patients Treated with the Ilizarov Method for Tibial Nonunion.

BACKGROUND Successful treatment of tibial nonunion should lead to a complete bone union, lack of pain, and pathological mobility of the lower extremity, as well as to the achievement of satisfactory joint mobility and muscle strength, which in turn improves its biomechanics. The objective of this study was to assess the load placed on the lower limbs in patients subjected to treatment with the Ilizarov method due to aseptic tibial nonunion. MATERIAL AND METHODS This research involved 24 participants (average age, 55 years). All were diagnosed with aseptic tibia nonunion and treated with the Ilizarov external fixator between 2000 and 2017. The control group was matched to the treated group in terms of sex and age. This study used pedobarography evaluation to assess lower limb load distribution. RESULTS No differences were found in the distribution of the load over the entire foot or of the forefoot and hindfoot of the treated limb in comparison to the non-dominant limb of the controls, or in the healthy limb of the treated group compared to the dominant limb of the control group. Similarly, differences in load distribution between the operated and healthy limbs of the treated group were insignificant. CONCLUSIONS Patients subjected to treatment with the Ilizarov external fixator for aseptic tibial nonunion show symmetrical load distribution on both lower limbs following treatment, which does not differentiate them in this respect from healthy individuals. Treated patients presented with a symmetrical distribution of the load on the lower extremities over the entire foot surface, including the forefoot and hindfoot. Finally, the Ilizarov external fixator enables restoration of correct static biomechanics of the treated limbs over the period of aseptic tibial nonunion therapy.

Dynamic Gait Parameters in Patients With Nonunion of the Tibia Following Treatment With the Ilizarov Method.

The purpose of this study was a comprehensive assessment of the dynamic parameters of gait in patients who underwent Ilizarov treatment for nonunion of the tibia. The experimental group consisted of 24 individuals treated with the Ilizarov method for nonunion of the tibia. The control group comprised 31 healthy individuals, matched for BMI, sex, and age. The dynamic gait parameters in patients and in the control group were measured with a Zebris pedobarographic platform. The treatment group and the control group showed statistically significant differences in terms of the following gait parameters: maximum force during braking nonoperated-limb (NOL), time maximum force during braking operated-limb (OL), time maximum force during braking NOL, maximum force during push-off NOL, time maximum force during push-off OL, and maximum force forefoot OL. Most of the evaluated gait parameters were bilaterally similar in patients group. The only significant differences between the operated and nonoperated limb were seen in terms of Time maximum force during push-off and Maximum force forefoot. The most pronounced abnormalities in dynamic gait parameters were observed in the forefoot (maximum force forefoot OL was 13.3% lower than in the control group, maximum force forefoot OL was 12.4% lower than in NOL). The patients treated with the Ilizarov method did not achieve a complete normalization of dynamic gait parameters, as their gait parameters did not equal those measured in the control group. The Ilizarov method for the treatment of tibial nonunion helps restore a symmetrical distribution of gait parameter values between the affected limb and the healthy limb. Patients continue to show the following abnormalities in their dynamic gait parameters after treatment: higher values maximum force during braking NOL, Time maximum force during braking OL, time maximum force during braking NOL, maximum force during push-off NOL, contact time forefoot NOL, contact time midfoot NOL, contact time heel NOL and smaller values of time maximum force during push-off OL.

Epidemiology of distal radius fractures in children and adults during the COVID-19 pandemic - a two-center study.

BACKGROUND: Distal radius fractures (DRFs) constitute 15-21% of all fractures. There are no detailed data on the possible changes in the epidemiology and treatment of DRFs in children and adults during the Covid pandemic. The purpose of our study was a comprehensive assessment of the impact of the COVID-19 pandemic on distal radius fractures (DRF) epidemiology, including both children and adults and various fracture fixation methods in two large trauma centers in Poland. METHODS: This study compared the medical data on the treatment of distal radius fractures in Poland in two periods: the period of the COVID-19 pandemic (from March 15 to October 15, 2020) and the corresponding period prior to the pandemic (from March 15 to October 15, 2019). We assessed detailed data from two trauma centers for pediatric and adult patients. Outpatients seeking medical attention at emergency departments and inpatients undergoing surgery at trauma-orthopedic wards were evaluated. We compared epidemiological data, demographic data, treatment type, and hospital stay duration. RESULTS: The total number of patients hospitalized due to DRF during the pandemic was 180, it was 15.1% lower than that from the pre-COVID-19 pandemic period (212). In the case of adult patients, the total number of those hospitalized during the pandemic decreased significantly (by 22%) from 132 to 103 patients. Analysis of the individual treatment methods revealed that the number of adults who underwent conservative treatment was considerably (by 30.3%) significantly lower in the period of the COVID-19 pandemic, from 119 to 83 patients. Compared to 13 patients from the pre-pandemic period, the number of surgically treated adults statistically increased to 20 patients (by 53.8%). Our analyses showed hospitalizations of surgically treated adults to be shorter by 12.7% during the pandemic, with the corresponding hospitalizations of surgically treated pediatric patients to be shorter by11.5%. CONCLUSIONS: Our study showed a significant impact of the COVID-19 pandemic on the epidemiology and treatment of DRFs in children and adults. We found decreased numbers of pediatric and adult patients with DRFs during the COVID-19 pandemic. The pandemic caused an increase in the number of children and significantly increase adults undergoing surgical treatment for DRFs, a decrease in mean patient age, shorter significantly length of hospital stay, and an increased number of men with DRFs.

A new criterion for assessing Ilizarov treatment outcomes in nonunion of the tibia.

INTRODUCTION: The purpose of this study was to assess a population of patients with nonunion of the tibia treated with the Ilizarov method in terms of achieved union rates and maintained union rates, determination of re-fracture factors, with a subsequent comparison of our findings with those reported in the available literature. MATERIALS AND METHODS: This study was a retrospective assessment of 102 patients with nonunion of the tibia treated with the Ilizarov method in the period 2008-2015. The assessed parameters were bone union achieved during treatment, duration of stabilization with an Ilizarov external fixator, and maintained bone union at the last follow-up visit. RESULTS: The mean age at the start of treatment was 46.7 years (11-84 years). The mean follow-up period was 7 years (2-12 years). Bone union was achieved in all patients. The mean duration of Ilizarov stabilization in the study group was 7.9 months (2.8-20.7 months). The rate of union maintained at the last follow-up visit was 95.1%. CONCLUSIONS: All patients in our study achieved bone union, which constitutes a better outcome than those reported on average in the literature (73.7-100%). The mean length of time which the Ilizarov external fixator was in place in our patients was 8.3 months, which is consistent with the data from literature. Infection, atrophic nonunion, nonunion in 1/3 distal of tibia, and close surgery technique are risk factors of re-fracture. None of the analyzed studies assessed the proportion of patients with maintained bone union. In our study, maintained bone union was observed in 95.1% of patients at the follow-up visit at least 2 years after treatment, which indicates excellent long-term treatment outcomes in nonunion of the tibia treated with the Ilizarov method.

Clinical evaluation of ankle arthrodesis with Ilizarov fixation and internal fixation.

BACKGROUND: Ankle arthrodesis may have internal or external stabilization. We assessed whether the type of stabilization after ankle arthrodesis will affect: (1) functional outcome in Foot and Ankle Ability Measure (FAAM) scale, (2) pain level, (3) period of hospitalization, (4) rate of complications. METHODS: We retrospectively studied 47 individuals after ankle arthrodesis with Ilizarov fixation (group 1, n = 21) and internal stabilization (group 2, n = 26) at our institution in years 2007-2015. Clinical outcomes were measure by: (1) functional outcome in FAAM scale, (2) pain level, (3) period of hospitalization, (4) rate of complications. RESULTS: Total number of complications in Ilizarov group was 13, which corresponded to 0.62 complications per patient on average. In group 2 there were 15 complications, which corresponded to 0.58 complications per patient on average. The intergroup difference in rate of complications was not statistically significant (p = 0.066). In group 1 the mean VAS pain level before treatment was 4.69 and after treatment was 1.5 (p = 0.037). In group with internal stabilization the mean VAS pain level before treatment was 4.71 and after treatment was 2.9 (p = 0.044). In group 1 the mean period of hospitalization was 5.29 days, in group 2 was 5.71 days (p = 0.517). In group 1 the mean functional outcome in FAAM scale was 79.38, in group 2 was 70.11 (p = 0.458). CONCLUSIONS: Ankle arthrodesis with Ilizarov stabilization is associated with lower prevalence of VAS pain level after surgery than after internal screws stabilization. Rate of complications, FAAM functional score and period of hospitalization were not statistically significant between group 1 and 2. Clinical outcome was satisfactory in group 1 and 2, but outcomes in Ilizarov group were slightly better than after internal stabilization.

Minimal invasive posterior correction of Lenke 5C idiopathic scoliosis: comparative analysis of minimal invasive vs. open surgery.

INTRODUCTION: Surgical management of adolescent idiopathic scoliosis in spite of usually favourable outcomes is still a major operation. Therefore, efforts are being undertaken to minimalize the procedure, reduce the surgical trauma and postoperative convalescence. The study was designed to compare posterior minimal invasive surgery using navigation based on intraoperative 3D imaging and standard open instrumented fusion in Lenke 5C idiopathic scoliosis treatment. MATERIALS AND METHODS: From eight patients with Lenke 5C curves planned for posterior correction and instrumented fusion, four were treated with minimally invasive and four had open procedure. Operation length, estimated blood loss, number of fusion levels, days of opioid intake, length of hospital stay and radiation doses required were noted. Radiographic assessment of spinal curvatures was performed (magnitude, flexibility, sagittal alignment). The comparison of the data was done between open and minimally invasive treated patients. RESULTS: In minimally invasive surgery group, the operations were longer on average 285 min ± 47.5 than in the open surgery group, 242.5 min ± 44.5 (p = 0.371) and resulted in slightly inferior coronal curve correction by 68.25% ± 6.2 vs. 78.25% ± 8.8, respectively (p = 0.072). We observed a clear reduction of intraoperative blood loss in minimally invasive patients (mean 138.75 ± 50 vs. 450 ± 106 ml, p = 0.016), shorter hospital stay, average 3.75 vs. 7 days (p = 0.043) and lower opioid requirements postoperatively - 2 vs. 3.25 days (p = 0.015). CONCLUSIONS: The minimally invasive approach to idiopathic scoliosis treatment is a very promising technique to limit the extent of surgery maintaining the same goals as in the open method. It allows for lower blood loss, less requirement for opioids and a shorter hospital stay.

Pedobarographic analysis of body weight distribution on the lower limbs and balance after ankle arthrodesis with Ilizarov fixation and internal fixation.

BACKGROUND: A number of various techniques were proposed to stabilized ankle arthrodesis, among them external and internal fixation. Appropriate balance and adequate distribution of lower limb loads determine normal biomechanics of the locomotor system. We hypothesized that various techniques used to stabilize ankle arthrodesis may exert different effects on (1) balance and (2) distribution of lower limb loads. METHODS: Retrospective analysis included 47 patients who underwent ankle arthrodesis with external stabilization with Ilizarov fixator (group 1, n = 21) or internal stabilization with screws (group 2, n = 26) between 2007 and 2015. Balance and distribution of lower limb loads were determined with a pedobarographic platform. RESULTS: In group 1, average load of the operated and non-operated limb amounted to 48.8% and 51.2%, respectively, and in group subjected to internal stabilization to 48.4% and 51.6%, respectively. Neither the intragroup nor the intergroup differences in the distribution of lower limb loads were statistically significant. Mean length of the center of gravity (COG) path was 137.9 cm for group 1 and 134 cm for group 2, and mean COG area amounted to 7.41 cm2 and 6.16 cm2, respectively. The latter intergroup difference was statistically significant. CONCLUSIONS: Balance after ankle arthrodesis with Ilizarov fixation is worse than after the same procedure with internal stabilization. Despite correction of ankle deformity, musculoskeletal biomechanics still remains impaired. While ankle fusion with either Ilizarov or internal fixation provide appropriate distribution of lower limb loads, none of these procedures normalize patients' balance.

Increased Radiation but No Benefits in Pedicle Screw Accuracy With Navigation versus a Freehand Technique in Scoliosis Surgery.

BACKGROUND: The clinical value of pedicle screws in spinal deformity surgery is well known; however, screw insertion is demanding and sometimes associated with complications. Navigation systems based on intraoperatively obtained three-dimensional (3-D) images were developed to minimize pedicle screw misplacements. However, there is a lack of data confirming superiority of navigation above other techniques. There are also concerns regarding increased radiation used during the procedure. QUESTIONS/PURPOSES: The purposes of this study were (1) to compare accuracy of the two methods of pedicle screws placement: intraoperative 3-D image navigation versus a freehand technique in patients with idiopathic scoliosis; and (2) to assess the radiation dose received by patients with both methods. METHODS: Between 2014 and 2016, 49 patients underwent posterior spinal fusion with all pedicle screw constructs for idiopathic scoliosis performed by two surgeons. The study design involved alternating the use of the freehand technique and navigation to position pedicle screws in consecutive patients, forming groups of 27 patients with 451 navigated screws and 22 patients with 384 screws positioned freehand. The two groups did not differ in age, sex, or magnitude of deformity. Two observers not involved in the treatment evaluated the position of the screws. The pedicle breach was assessed on intraoperatively obtained 3-D O-arm® scans according to a grading system: Grade 0 = no pedicle wall violation; Grade 1 = perforation ≤ 2 mm; Grade 2 = 2 to 4 mm; and Grade 3 = perforation > 4 mm. Grades 0 and 1 were considered properly positioned and Grades 2 and 3 represented malposition. RESULTS: In terms of accuracy, we found no differences, with the numbers available, between the freehand and navigated groups in terms of the proportion of screws that were properly positioned (96% freehand and 96% in the navigation group, respectively; p = 0.518). Grade 3 pedicle screws were observed only in the freehand group and were all located in the upper thoracic spine. Patients undergoing navigated pedicle screw placement received a greater mean radiation dose than those whose screws were placed freehand (1071 ± 447 mGy-cm versus 391 ± 53 mGy-cm; mean difference, 680 mGy-cm; 95% confidence interval, 217-2053 mGy-cm; p < 0.001). CONCLUSIONS: In patients with moderate idiopathic scoliosis undergoing primary surgery, we did not observe benefits of pedicle screw placement with CT-based navigation, but the patients experienced greater exposure to radiation. LEVEL OF EVIDENCE: Level III, therapeutic study.

The impact of direct vertebral rotation (DVR) on radiographic outcome in surgical correction of idiopathic scoliosis.

INTRODUCTION: Recent developments of spinal instruments allow to address nearly all components of idiopathic scoliosis. Direct vertebral rotation (DVR) maneuver was introduced to correct apical axial vertebral rotation. It is however still not well established how efficiently DVR affects results of scoliosis correction. The object of the study was to evaluate en bloc apical vertebral rotation (DVR) and its impact on coronal and sagittal correction of the spine in patients undergoing surgical scoliosis treatment. MATERIALS AND METHODS: Thirty-six consecutive patients who underwent posterior spinal fusion with pedicle screws only constructs for idiopathic scoliosis. Fifteen patients (20 curves) were corrected by rod derotation only and 21 patients (26 curves) had both rod derotation and DVR. Curve measurements were performed on x-rays obtained before and postoperatively-coronal curves, kyphosis (T2-T12, T5-T12). Spine flexibility was assessed on prone bending x-rays. Apical axial rotation was determined on CT scans obtained intraoperatively and postoperatively. Rotation angle (RAsag) was measured according to Aaro and Dahlborn. RESULTS: We observed reduction of RAsag in all patients; however, in DVR group, decrease was greater, by 31.8% comparing to non-DVR group, by 8.6% (p = 0.0003). Mean coronal correction in DVR group was 68.8% and in rod derotation group without DVR 55% (p = 0.002). No significant correlation was found between degree of derotation obtained and coronal correction. In DVR group T2-T12 kyphosis has increased in 28 (65%) patients whereas in non-DVR group in 31 (69%) cases. Mean value of T2-T12 kyphosis growth was 16.7% in DVR and 22.1% in non-DVR group. These differences however did not occur statistically significant. CONCLUSIONS: Direct vertebral rotation (DVR) maneuver reduces significantly apical rotation of the spine, enhances ability of coronal correction, and it does not reduce thoracic kyphosis.

Sport and physical activity in patients after derotational corticotomies with the Ilizarov method.

BACKGROUND: Torsional distortion causes numerous musculoskeletal pathologies. Effective treatment allows restoring limb function and return to sport activity. Objectives was to assess the sport activity in patients with derotational corticotomies using the Ilizarov method. METHODS: It was case series retrospective study. The study examined 56 patients. The control group consisted of 54 patients. A mean follow-up time was 5 years and 6 months. A mean age at the start of treatment was 19 years and 10 months. Patients underwent derotational corticotomies of distal epiphysis of the femur or proximal epiphysis of the tibia using the Ilizarov method. The effect of etiology, type of treatment strategy, and rate, size, and level of derotation on the scores of four activity scales was evaluated; additionally, the activity was compared with the control group. RESULTS: There were no differences in the scales of activity before and after treatment in the study and control groups. In the study group, higher activity after treatment was reported in the level of GRIMBY activity. Patients with internal torsion had a higher VAS activity level after treatment as compared to patients with external torsion. CONCLUSIONS: Derotational corticotomies allow returning to or increasing physical and sport activity: they do not have a negative influence on physical activity after treatment as compared to the control group.

Do Patient Sex and Age Affect Hemiepiphysiodesis Outcomes?

(1) Background: The purpose of this study was to assess the effects of sex and age on the outcomes of hemiepiphysiodesis performed for genu valgum and varum deformity correction. (2) Methods: We analyzed patients who had undergone O-Plate hemiepiphysiodesis due to genu valgum or varum in the period of 2020-2023. The study group comprised 22 females and 20 males aged between 3 and 14 years at the time of surgery. Age-stratification yielded a subgroup of 3-10-year-olds (16 patients, 20 treated limbs) and a subgroup of 11-14-year-olds (26 patients, 28 treated limbs). We assessed the following parameters: hospital stay duration, deformity correction time, MAD correction, amount of angular correction, correction velocity, correction rate, complete deformity correction, deformity recurrence, surgery duration, and complications. (3) Results: The mean follow-up was 19 months. The mean surgery time in the subgroup of 3-10-year-olds (25.62 min) was significantly longer than that in the subgroup of 11-14-year-olds (22.81 min, p = 0.018). The mean deformity correction time in the male subgroup (11.33 months) was significantly shorter than that in the female subgroup (15.87 months, p = 0.013). A comparison of the subgroups stratified by age yielded a mean amount of angular correction of 10.5° in the younger children, which was significantly higher than that of 7.2° achieved in the older children; p = 0.027. The difference in mean correction velocity between 3-10-year-old children (4.03 mm/month) and that in 11-14-year-old children (1.39 mm/month) was statistically significant; p = 0.031. The mean rate of correction was 0.49°/month in females and 0.89°/month in males, with the latter rate significantly greater; p = 0.023. The difference in the mean rate of correction between the younger (1.08°/month) and the older subgroup (0.59°/month) was also significant; p = 0.018. A significant difference in terms of deformity recurrence rates was observed between the younger subgroup (66.67%) and older subgroup (only 10.53%); p = 0.005. (4) Conclusions: Patient sex had no significant effect on hemiepiphysiodesis outcomes; patient age has a considerable effect on hemiepiphysiodesis outcomes.

Gait Analysis in Patients with Symptomatic Pes Planovalgus Following Subtalar Arthroereisis with the Talus Screw.

Background: Pes planovalgus is one of the most common pediatric skeletal deformities. There have been no studies to analyze in detail the spatiotemporal variables of gait following arthroereisis. Purpose of the study: The purpose of our study was to assess gait parameters in patients with symptomatic flexible flatfoot following treatment with the talus screw. Methods: This was a prospective study assessing the 22 patients treated surgically due to symptomatic flexible flatfoot with the talus screw. Patients underwent gait assessment with a G-Sensor. We analyzed the following gait parameters: gait cycle duration, step length, support phase duration, swing phase duration, double support duration, single support duration, cadence, velocity, step length. Results: The post-operative gait parameter assessment for the operated and non-operated foot showed a significant difference only in terms of step length. Cadence increased from the pre-operative mean of 82.29 steps/min to a post-operative mean of 102.94 steps/min. Gait velocity increased significantly from 0.81 m/s before to 0.96 m/s after surgery. Discussion: Arthroereisis with the talus screw helps improve gait parameters following surgery. Post-operatively, we observed increased gait velocity and cadence and decreased gait cycle duration in the operated limb. Conclusion: Short-term biomechanical outcomes of pes planovalgus treatment with the talus screw are good.

Balance and Weight Distribution over the Lower Limbs Following Calcaneal Fracture Treatment with the Ilizarov Method.

Background: The biomechanical outcomes of intra-articular calcaneal fracture treatment have not been fully explored. The purpose of this study was to analyze pedobarographic assessments of balance and body weight distribution over the lower limbs in patients following calcaneal fracture treatment with the Ilizarov method and to compare the results with those of a control group. Materials and Methods: The data for our retrospective study came from cases of intra-articular calcaneal fractures treated with the Polish modification of the Ilizarov method in the period between 2021 and 2022. The experimental group (21 patients; 7 women, 14 men) included Sanders classification calcaneal fractures type 2 (n = 3), type 3 (n = 5), and type 4 (n = 13). The control group comprised 21 sex-matched healthy volunteers, with no significant differences from the experimental group in terms of age or BMI. The examination included an assessment of balance and weight distribution over the lower limbs. The device used was a FreeMED MAXI pedobarographic platform (SensorMedica). Results: The mean displacement of the center of gravity in the experimental group was significantly higher at 1307.31 mm than in the control group (896.34 mm; p = 0.038). The mean area of the center of gravity was not significantly different between the groups. An analysis of weight distribution over the operated and uninjured limb in the experimental group and the non-dominant and dominant limb, respectively, in the control group revealed no significant differences. We observed no significant differences in the percentage of weight distribution over the lower limbs between the operated limb in the experimental group and the non-dominant limb in the control group, or between the uninjured limb in the experimental group and the dominant limb in the control group. Conclusions: The use of the Ilizarov method in calcaneal fracture treatment helps normalize the percentage weight distribution in the lower limbs, with the results comparable with those obtained in the healthy control group. The mean displacement of the center of gravity was worse in the experimental group than in controls; whereas the mean area of the center of gravity was comparable between the two groups. Treatment of calcaneal fractures with the Ilizarov method does not help achieve completely normal static parameters of lower-limb biomechanics. Patients treated for calcaneal fractures with the Ilizarov method require longer and more intense rehabilitation and follow-up.

Short-Term and Medium-Term Radiological and Clinical Assessment of Patients with Symptomatic Flexible Flatfoot Following Subtalar Arthroereisis with Spherus Screw.

BACKGROUND: There have been no reports on arthroereisis screw insertion into the talus in patients with flexible flatfoot. We aimed to conduct a clinical and radiological assessment in patients with symptomatic pes planovalgus deformity treated with a talar screw. METHODS: This study involved a prospective assessment of 27 patients treated surgically for symptomatic flexible flatfoot deformity in the period 2021-2022. The following parameters were assessed in this study: Meary's angle, the Costa-Bartani angle, the calcaneal pitch angle, surgery duration, the length of hospital stay, patient satisfaction, patients' retrospective willingness to consent to the treatment they received, postoperative complications, and the use of analgesics. RESULTS: The mean follow-up period was 14.76 months. Meary's angle decreased from 18.63° before surgery to 9.39° at follow-up (p = 0.004). The Costa-Bartani angle decreased significantly from 154.66° before surgery to 144.58° after surgery (p = 0.012). The calcaneal pitch angle changed from 16.21° before to 19.74°. Complications were reported in three patients (11.11%). The mean surgery duration was 32 min. The mean hospital stay was 2.2 days. Fourteen patients (51.85%) were highly satisfied with the treatment, and 12 patients (44.44%) were quite satisfied with treatment. Twenty-five (92.59%) of the evaluated patients would choose the same type of treatment again. Six patients (22.22%) needed to use analgesics prior to surgical treatment, whereas none of the patients needed to use them by the final follow-up. CONCLUSION: Spherus screw arthroereisis helps improve radiological parameters in patients with flexible flatfoot. We observed good clinical outcomes after treatment with a talar screw, with a majority of patients reporting moderate-to-high levels of satisfaction with treatment. Both short- and medium-term treatment outcomes of pes planovalgus treatment with the use of Spherus screw are good.

Prognostic Factors in Staged Bilateral Total Knee Arthroplasty-A Retrospective Case Series Analysis.

BACKGROUND: Bilateral osteoarthritis of the knee is an indication for a bilateral total knee replacement (TKR) procedure. The goal of our study was to assess the sizes of the implants used during the first and second stages of TKR procedures in order to compare their size and identify the prognostic factors for the second procedure. METHODS: We evaluated 44 patients who underwent staged bilateral TKR procedures. We assess the following prognostic factors from the first and second surgery: duration of anesthesia, femoral component size, tibial component size, duration of hospital stay, tibial polyethylene insert size, and the number of complications. RESULTS: All assessed prognostic factors did not differ statistically between the first and second TKR. A strong correlation was found between the size of femoral components and the size of tibial components used during the first and second total knee arthroplasty. The mean duration of the hospital stay associated with the first TKR surgery was 6.43 days, whereas the mean duration of the second hospital stay was 5.5 days (p = 0.211). The mean sizes of the femoral components used during the first and second procedures were 5.43 and 5.2, respectively (p = 0.54). The mean sizes of the tibial components used during the first and second TKR procedures were 5.36 and 5.25, respectively (p = 0.382). The mean sizes of the tibial polyethylene inserts used during the first and second procedures were 9.45 and 9.34 (p = 0.422), respectively. The mean duration of anesthesia during the first and second knee arthroplasty was 117.04 min and 118.06 min, respectively (p = 0.457). The mean rates of recorded complications associated with the first and second TKR procedures were 0.13 and 0.06 per patient (p = 0.371). CONCLUSIONS: We observed no differences between the two stages of treatment in terms of all analyzed parameters. We observed a strong correlation between the size of femoral components used during the first and second total knee arthroplasty. We noted a strong correlation between the size of tibial components used during the first and second procedure. Slightly weaker prognostic factors include the number of complications, duration of anesthesia and tibial polyethylene insert size.

Direct Vertebral Rotation (DVR) Does Not Improve Clinical and Radiological Results Compared to Differential Rod Contouring (DRC) in Patients Treated Surgically for Idiopathic Scoliosis.

Direct vertebral rotation (DVR) is the most widespread method to correct axial vertebral rotation. Differential rod contouring (DRC) also includes derotation, but not to the same extent as DVR. DVR requires additional surgical effort with potential consequences, which are absent in DRC; moreover, the data concerning the clinical benefits of apical derotation are not convincing. In the present study, clinical and radiological outcomes were compared in patients who underwent surgery for adolescent idiopathic scoliosis (AIS), having DVR and DRC vs. DRC only. In total, 73 AIS patients with curves of 40-85°, consecutively operated on by one surgeon, participated in this study and were followed up over 2 years. Scores from the SRS-22 questionnaire were analysed, the angles of trunk rotation (ATR) were measured with an inclinometer and a radiographic assessment of coronal and sagittal spinal profiles was conducted. In 38 cases, only DRC was performed, and in 35 DRC was performed and followed by DVR; the groups did not differ from an epidemiological point of view. Total SRS-22 scores after 2 years were similar in both groups (4.23 (±0.33) in DRC vs. 4.06 (±0.33) in DRC/DVR, p = 0.1). In all components of SRS-22, the differences were minor, with p being way above 0.05. The mean ATR in the DRC/DVR group was slightly smaller (8 ± 4°) than that of the DRC group (10 ± 5°), p = 0.16. Radiographic analysis did not show significant differences. The coronal curve was corrected by 66 ± 12% for DRC and 63 ± 15% for DVR, p = 0.28. Thoracic kyphosis in the DRC/DVR group increased by 1°, whereas in the DRC group the average kyphosis increased by 5° with a p value of 0.07. The complication rates were similar in both groups. This investigation did not show any advantages of the combination of DRC and DVR in scoliosis correction over DRC only, both radiologically and clinically, yet it affected intraoperative parameters, extending the operation time with only a minor increase in blood loss.