Dysplasia Of The Hip Research Articles

Comparative long-term outcomes of Petit-Morel versus overhead traction methods versus immediate closed reduction for late-detected developmental dysplasia of the hip: A systematic review

Purpose: This study aimed to compare the clinical and radiographic outcomes of traction to assist reduction in patients with late-detected developmental dislocation of the hip using the Petit-Morel technique versus the Bryant overhead traction technique, and to compare the clinical and radiographic outcomes of these two traction techniques with immediate closed reduction. Methods: A comprehensive systematic search of the MEDLINE/PubMed, EMBASE, and Web of Science databases was performed to identify relevant studies. Studies on Petit-Morel and overhead traction techniques and immediate closed reduction were then screened, selected, and data collected; included studies were assessed using the Methodological Index for Non-Randomized Studies criteria. Results: In total, 22 studies met the inclusion criteria. The Petit-Morel group had a successful reduction rate of 87% while the overhead traction group had a successful reduction rate of 67.1%, and the immediate closed reduction group had a successful reduction rate of 78.4% (Petit-Morel versus overhead traction, p < 0.001; overhead traction versus immediate closed reduction, p < 0.001, Petit-Morel versus immediate closed reduction, p = 0.021). The Petit-Morel group had an overall avascular necrosis rate of 2.7%, compared to 10.6% for overhead traction and 21.5% for immediate closed reduction (Petit-Morel versus overhead traction, p = 0.001; Petit-Morel versus immediate closed reduction, p < 0.001; overhead traction versus immediate closed reduction, p < 0.001). The Petit-Morel group achieved a satisfaction rate of 86.4% according to the Severin classification, as compared to 71.2% in the overhead traction group and 76.4% in the immediate closed reduction group (Petit-Morel versus overhead traction, p < 0.001; Petit-Morel versus immediate closed reduction, p = 0.018; overhead traction versus immediate closed reduction, p = 0.195). Conclusion: Petit-Morel and overhead traction techniques did not outperform immediate closed reduction in terms of redislocation rates, and radiological satisfaction, the Petit-Morel technique, has lower clinically significant avascular necrosis rates than overhead traction and immediate closed reduction. Level of evidence: Level III.

Radiographic Outcome Following Treatment of Residual Hip Dysplasia with Pemberton Versus Salter Osteotomy

Background: Salter osteotomy (SO) and Pemberton acetabuloplasty (PA) are procedures to treat skeletally immature patients with developmental dysplasia of the hip (DDH). The purpose of this study was to compare the radiographic results and rate of residual dysplasia (RD) after treatment with SO and with PA. Methods: This was a retrospective analysis of pediatric patients treated with either SO or PA for DDH between 1980 and 2013 who were skeletally mature at the time of follow-up. The preoperative and postoperative acetabular index (AI) and postoperative lateral center-edge angle (LCEA) and anterior center-edge angle (ACEA) were collected. RD was defined as an LCEA or ACEA of <20° or an acetabular inclination (AIn) of >15° at skeletal maturity. Continuous variables were compared between treatment groups with 2-sample t tests, and categorical variables were compared using chi-square tests. Multivariable analysis was used to identify risk factors for RD with p < 0.05. Results: The study included 113 hips in 102 patients with a mean follow-up of 10.5 years. The SO group had 73 hips treated at a mean patient age of 5.4 years, and the PA group had 40 hips treated at a mean age of 5.3 years. The preoperative AI did not differ between the treatment groups (32.2° versus 31.3°, p = 0.658), nor did the immediate postoperative AI (20.0° versus 20.2°, p = 0.459). At the time of final follow-up, the SO group had a significantly smaller AIn (8.6° versus 13.2°, p = 0.001), a trend toward a greater LCEA (26.2° versus 21.6°, p = 0.056), and a similar ACEA (24.1° versus 26.1°, p = 0.808). By the abovementioned definition, 36 hips (31.9%) had evidence of RD, with a lower rate in the SO group (26.0% versus 42.5%, p = 0.07). Patients who had a positive family history of hip dysplasia were more likely to have RD (odds ratio = 4.311, 95% confidence interval = 1.125 to 16.528). Conclusions: Patients with RD could be effectively treated with either SO or PA, with overall good radiographic outcomes. However, SO achieved a better AI and may thus yield better long-term health of the affected hip. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Postoperative analgesic effect of lumbar erector spinae plane block for developmental hip dysplasia surgery: a randomized controlled double-blind study.

Open surgery for developmental dysplasia of the hip (DDH) may cause severe pain due to tenotomies and pelvic-femoral osteotomies. This study aims to evaluate the analgesic effect of ultrasound-guided Lumbar Erector Spina Plane (L-ESP) Block in pediatric patients undergoing DDH surgery. Sixty children scheduled for DDH surgery were randomly assigned into two groups. Group I (n = 30) received L-ESP with 0.5 mL/kg of 0.25% bupivacaine before surgery. In contrast, Group II (n = 30), as the control group, received the same volume of saline injection. Identical postoperative analgesia protocol was adjusted for both groups. Parental satisfaction, pain levels, ibuprofen, and opioid consumption were recorded. Pain levels were evaluated with the FLACC (Face, Legs, Activity, Crying, Consolability) scale. FLACC scores at the first 24th hours were lower in the L-ESP group than the control group (p < 0.001). Rescue opioid utilization was higher in the control group (15/26) than in the L-ESP group (2/29) (p < 0.001). The consumption of ibuprofen was higher in the control group than in the L-ESP group in the ward (24/26 vs. 3/29, p < 0.001, respectively). Parental satisfaction was superior in the L-ESP group (p = 0.024). To provide postoperative analgesia for DDH surgery, ultrasound-guided L-ESP may be an effective and alternative regional anesthetic technique.

The accuracy and efficiency of design and development of 3D printed integral anatomical acetabular prosthesis in total hip arthroplasty for Crowe type Ⅱ and Ⅲ developmental dysplasia of the hip

Objective: To compare the accuracy and efficiency between the model development method and the software development method, which design and develop 3D printed integral anatomical acetabular prosthesis to be used in total hip arthroplasty(THA) for patients with Crowe type Ⅱ and Ⅲ developmental dysplasia of the hip(DDH). Methods: Fifteen patients with end-stage hip osteoarthritis due to Crowe type Ⅱ and Ⅲ DDH who underwent THA in the Orthopedics Department of the First Affiliated Hospital of Bengbu Medical College between January 2015 and June 2023 were selected in this study retrospectively. There were 1 male (1 hip) and 14 females (17 hips) with a mean age of (55.1±9.1) years. There were 12 hips with Crowe type Ⅱ, 6 hips with Crowe type Ⅲ. The preoperative pelvis three-dimensional CT data in those patients were used to design integral anatomical acetabular prosthesis. The model development group used 3D printing technology to print life-size pelvis models. The acetabulum was reamed and the acetabulum cup was inserted into the socket according to conventional THA procedures. The bone defect above the acetabulum cup was filled with bone wax. The Mimics and 3-matic software were used to simulate the THA procedures, design and install the integrated anatomical acetabular prosthesis in the software development group. The operation time, the size of the acetabular cup, the volume and surface area of the acetabulum bone defect, the acetabular cup's inclination and anteversion, the horizontal distance and the vertical distance of hip rotation center were compared between the two methods. Results: The study in the two groups were all based on the data of 18 hips in the 15 patients. The horizontal and vertical distances of rotation center in the model development group and software development group was (32.08±1.80) mm, (32.17±2.40) mm and (14.36±1.53) mm, (15.11±1.45) mm, respectively (both P>0.05). The cup size in model development group was (48.56±1.15)mm, and it was (48.77±1.22) mm in the software group (P=0.160). The anteversion and inclination of the acetabular cup in the model and software groups were 23.79°±6.31°, 30.49°±11.03° and 15.17°±0.52°, 40.24°±0.58°, respectively (both P<0.01). The volume and surface area of the acetabulum bone defect in the model development group was (5.06±2.86) mm3 and (8.31±2.21) mm2, respectively, while it was (4.01±2.56)mm3 and (6.83±2.71) mm2, respectively, in the software development group (both P<0.05). The work time in the model development group was (24.43±0.68) h and (0.47±0.12) h in the software development group, respectively (P<0.001). Conclusion: Compared with the 3D printing model development method, the application of Mimics and 3-matic software to design and develop integrated anatomical acetabular prosthesis in total hip arthroplasty for Crowe type Ⅱ and Ⅲ DDH show advantages of convenience, high efficiency and more accuracy.

Clinical and surgical factors influencing screw breakage during hardware removal following periacetabular osteotomy

Abstract Periacetabular osteotomy (PAO) is a procedure used to treat patients with hip dysplasia. Current literature reports symptomatic hardware removal (HWR) rates of 13.6% following PAO. No reports have examined the incidence of or factors relating to screw breakage during HWR. This study reports the incidence of screw breakage in patients undergoing HWR following PAO and examines the associated clinical and surgical factors. Patients who underwent PAO by a single surgeon from 2012 to 2022 were retrospectively reviewed. Demographic, surgical, and implant information was collected. Constructs were stratified by number (three-screw and four-screw) and type (3.5 mm only, 4.5 mm only, and mixed). Incidence rates of HWR and screw breakage were calculated. Three hundred and two hips from 254 patients undergoing PAO were included. Seventy-one hips from 58 patients underwent HWR (23.5%). Eighteen of 259 screws (6.9%) were broken upon removal in 10/71 hips (14.1%). Significantly more 3.5-mm screws were removed (24.7% vs 21.2%; P = .05) and broken than 4.5-mm screws (10.5% vs 3.8%; P = .04). Time to removal was significantly longer in broken screws (16.8 ± 12.7 months vs 33 ± 18.2 months, P &amp;lt; .001). The use of 3.5-mm screws and increased time from implantation to removal are associated with higher rates of screw breakage during HWR following PAO. The use of 4.5-mm screws and earlier time to removal (less than 12 months) both decrease the probability of breakage.

Changes in diagnostics and treatment pathways for developmental dysplasia of the hip after the introduction of national guidelines: An updated questionnaire amongst paediatric orthopaedic surgeons in The Netherlands

Purpose: Diagnostics and treatment pathways for developmental dysplasia of the hip are highly variable in clinical practice. Recently, two national guidelines were developed in the Netherlands, providing a uniform protocol for the diagnosis and treatment of developmental dysplasia of the hip in children under the age of 1 year. The aim of this survey study was to assess whether diagnostic and treatment strategies have changed amongst paediatric orthopaedic surgeons in the Netherlands compared to a similar survey study in 2011, after the introduction of the guidelines. Methods: A web-based online questionnaire was developed and shared amongst the members of the Dutch Paediatric Orthopaedic Society. The questions concerned the diagnosis and treatment of developmental dysplasia of the hip, ranging from mildly dysplastic to dislocated hips, in children under the age of 1 year. We used a questionnaire similar to the previous study and evaluated the results. Results: Thirty-four participants completed the survey. Regarding diagnosis and follow-up, ultrasonography was generally applied for children younger than 6 months, while radiography was more frequently used for children aged 6–12 months. In 2011, radiography was more widely applied in all age groups. Initial treatment for dysplastic, stable hips was mostly active monitoring, while this was generally a rigid splint in 2011. For dislocated unstable hips, the first step in treatment was generally the Pavlik harness, as in 2011. Conclusion: The diagnostic and treatment pathways of developmental dysplasia of the hip in children under the age of 1 year seem to have partially changed amongst Dutch paediatric orthopaedic surgeons compared to 2011, after the publication of new guidelines.

Hip Flexor Muscle Activation During Common Rehabilitation and Strength Exercises

Background/Objectives: The iliopsoas muscle plays an essential role in lumbopelvic and hip anterior stability, which is particularly important in the presence of limited osseous acetabular coverage anteriorly as in hip dysplasia and/or hip micro-instability. The purpose of this systematic review is to (1) describe iliopsoas activation levels during common rehabilitation exercises and (2) provide an evidence-based exercise progression for strengthening the iliopsoas based on electromyography (EMG) studies. Methods: In total, 109 healthy adult participants ranging from ages 20 to 40 were included in nine studies. PubMed, CINAHL, and Embase databases were systematically searched for EMG studies of the psoas, iliacus, or combined iliopsoas during specific exercise. The Modified Downs and Black Checklist was used to perform a risk of bias assessment. PROSPERO guidelines were followed. Results: Nine studies were included. Findings suggest that the iliopsoas is increasingly activated in ranges of hip flexion of 30–60°, particularly with leg lowering/raising exercises. Briefly, &gt;60% MVIC activity of the iliopsoas was reported in the active straight leg raise (ASLR) in ranges around 60° of hip flexion, as well as with supine hip flexion and leg lifts. In total, 40–60% MVIC was found in exercises including the mid-range of the ASLR around 45° of hip flexion and lifting a straight trunk while in a hip flexed position. Conclusions: The findings suggest that exercises in increased hip flexion provide greater activation of the iliopsoas compared to exercises where the trunk is moving on the lower extremity. Iliopsoas activation can be incrementally progressed from closed to open kinetic chain exercises, and eventually to the addition of external loads. The proposed exercise program interprets the results and offers immediate translation into clinical practice.

Challenges and Long-Term Outcomes of Cementless Total Hip Arthroplasty in Patients Under 30: A 24-Year Follow-Up Study with a Minimum 8-Year Follow-Up, Focused on Developmental Dysplasia of the Hip

Background: Total hip arthroplasty (THA) is a well-established and effective treatment for advanced osteoarthritis (OA) of the hip joint. While commonly performed in older patients, THA is increasingly used in younger individuals, especially in cases of secondary coxarthrosis. Technological advances have led to the development of specialized implants, which allow surgeons to address severe post-inflammatory or dysplastic deformities. Younger patients undergoing THA, often in their 20s or 30s, present higher functional expectations. Despite limited long-term studies, research indicates a higher rate of revision surgeries in this age group compared to older populations, making these procedures a unique challenge. Methods: This retrospective study analyzed 5263 primary total hip arthroplasties (THAs) performed at our center between May 1985 and December 2016. After excluding cemented and hybrid implants, as well as patients lost to follow-up or with other etiologies, 101 uncemented THA procedures in 92 patients aged 30 years or younger were included. The majority (64.4%) were due to dysplastic coxarthrosis (DDH), while avascular necrosis (26.7%) and juvenile rheumatoid arthritis (8.9%) accounted for the rest. The average patient age was 25.6 years, with a mean follow-up period of over 24 years. Surgical technique involved the anterolateral approach, with implants placed in the true acetabular region. Implants included Munich/Plasmacup, Mittelmeier, and P-M designs. Implant survival was estimated using the Kaplan–Meier estimator to determine the probability of implant longevity over the follow-up period. Outcomes were assessed using Merle d’Aubigné and Postel scores, modified by Charnley, alongside radiographic evaluations based on the Crowe, De Lee, and Gruen classifications. Results: Preoperatively radiological assessment of all hips was classified as grade IV according to the Kellgren–Lawrence scale. Over an average follow-up of 24 years, final outcomes using the modified Merle d’Aubigné and Postel (MAP) classification were excellent in 24%, good in 37%, satisfactory in 8%, and poor in 32% of cases. Results compared between DDH group and control group indicate significantly more poor results for the DDH group compared to the control group (p-value &lt; 0.05). All poor outcomes were associated with prosthesis loosening, primarily involving P-M and Mittelmeier acetabular components. Complications included intraoperative fractures in five cases, peripheral nerve dysfunction in six cases, and heterotopic ossification in eight cases. Postoperative pain scores on the VAS scale improved from 6.8 to 1.7. The Kaplan–Meier estimator indicated 10-year survival rates of 85.2% for the entire prosthesis, with 69.8% survival at 15 years and 54.5% at 20 years. For each period the bio-functionality according to Kaplan–Meier estimator was in favor of the control group. Conclusions: Cementless THA in patients aged 30 or younger has demonstrated itself to be an efficacious treatment for hip osteoarthritis, yielding favorable bio-functional outcomes in both short- and long-term follow-up. Nevertheless, THA performed in the context of developmental dysplasia of the hip (DDH) carries a significantly elevated risk of postoperative complications, most notably aseptic loosening, which critically undermines implant survival rates. Given the young demographic and the anticipated prolonged functional lifespan of the prosthesis, there is an increased propensity for loosening over time, necessitating vigilant and sustained postoperative surveillance.

Children with Developmental Dysplasia of Hip - Our Experience of Outcome at a Tertiary Care Centre

Objective: To assess the operative outcome of children who underwent surgical management for developmental dysplasia hip at a tertiary care center. Study Design: Case series. Place and Duration of Study: Pak-Emirates Military Hospital, Rawalpindi Pakistan, from Jan to Oct 2021. Methodology: This case series included 25 children who underwent triple procedure encompassing open reduction, femoral shortening and Salter’s pelvic osteotomy. Post-operative analysis of the clinical outcome was done using McKay’s classification and radiological assessment done using Severin’s classification. Results: Age of enrolled participants ranged from 02 to 07 years, mean age being 4.3±1.45 years, of which 8(32%) were male and 17(68%) were female. Mean pre-operative acetabular index was 40.3±3.38 while the mean post-operative acetabular index was 25.1±3.10. On follow-up, one child had subluxation while another had complete dislocation of the hip joint. Conclusion: Triple procedure with open reduction, femoral shortening and Salter’s osteotomy gives satisfactory results in patients aged 2 to 7 with substantial reduction in post-operative acetabular index.

Correlation Analysis of Limb Length Differences and Surgical Approaches Following Unilateral Total Hip Arthroplasty

Aim: This research aims to analyze the transition from the posterolateral approach (PLA) to the direct anterior approach (DAA) in 101 cases of unilateral total hip arthroplasty (THA). In addition, the study specifically aims to evaluate limb length discrepancy (LLD). Methods: We conducted a retrospective analysis of 101 patients who had unilateral THA from September 2021 to August 2024. The causes of THA included femoral neck fracture (n = 28), osteoarthritis (n = 23), osteonecrosis of the femoral head (n = 25), and developmental dysplasia of the hip (n = 25). The mean age was 61.50 years in the PLA group and 63.00 years in the DAA group. Safety feasibility was assessed by analyzing procedure time, incision length, and bleeding volume. LLD was indirectly evaluated by measuring the difference in central edge angles of the postoperative pelvic orthotopic plate. This was done to assess the superiority of the DAA. Results: The DAA group had a longer operation time, less blood loss, and a shorter incision length compared to the PLA group, with a statistically significant difference (P &lt; 0.05). Additionally, body mass index was found to be linearly correlated with operation length. The LLD in the DAA group was significantly smaller than that in the PLA group (P &lt; 0.05). Moreover, this LLD was linearly associated with the difference in the central edge angle. Conclusion: DAA may effectively control LLD after THA, resulting in less blood loss and shorter incisions, though it may require longer operative time.

Revision open reduction in developmental dysplasia of the hip.

Re-dislocation after open reduction remains a challenge in the treatment of developmental dysplasia of the hip (DDH). Few geographically and temporally diverse reports exist on the topic. The aim of this study was to uncover the outcome in a group of DDH patients who underwent repeat open reduction. All patients who had DDH surgery were screened at one hospital, spanning a ten-year period. Patients who underwent repeat open reduction for re-dislocation were included. Clinical data and radiographic parameters were obtained. This is a retrospective cohort study. Twenty-three revision open reductions were included. The median age (interquartile range) was 40 (26-61) months and the median follow-up duration was 26 (14-55.50) months. Fifteen revisions (65%) had at least one notable complication. Recurrent instability was found in nine revisions (39%), and other complications included avascular necrosis, stiffness and leg length discrepancy in 12 revisions (52%). Although it did not reach statistical significance (p = 0.13), all hips with pre-revision international hip dysplasia institute grade III (n = 4), compared to grade IV, remained stable after the re-operation. There is a substantial risk of dismal prognosis after repeat open reduction. Moreover, every precaution should be taken during the first surgery to reduce the risk of re-operation. Findings from this study may help inform surgeons and caregivers about the probable negative outcome when contemplating repeat open reduction.

Sound transmission using a tuning fork for the diagnosis of developmental dysplasia of the hip in newborns

IntroductionThis study aims to estimate the validity and reliability of sound transmission tests using a tuning fork and stethoscope compared with the usual clinical procedures for the diagnosis of developmental dysplasia of the hip in newborns from the state of Guanajuato, Mexico.MethodologyThis is a cross-sectional study of newborns at the Guanajuato General Hospital of the Institute of Public Health from Guanajuato. The population under study comprised newborns born from April to May 2023. All parents of newborns were invited to participate. The Ortolani, Barlow, Peter–Baden, and sound transmission tests were performed with a tuning fork and stethoscope three times by two observers. Ultrasonography using the Graf technique was also applied to both hips. We evaluated the validity and repeatability of clinical procedures and sound transmission tests against ultrasonography as the gold standard. We calculated sensitivity, specificity, and predictive values for validity and Cohen's kappa for repeatability.ResultsThe sample consisted of 100 newborns (56% male and 44% female); 65% born by vaginal delivery. Sound transmission test results for sensitivity, specificity, the positive predictive value, and the negative predictive value were 87.88%, 95.81%, 80%, and 97.53%, respectively. The intra-observer kappa was 0.89 (95% CI = 0.80–0.97) and the inter-observer kappa was 0.85 (95% CI = 0.73–0.97). The validity and repeatability of the Ortolani, Barlow, and Peter–Baden tests were low compared with the sound transmission test.ConclusionThe sound transmission test using a tuning fork and stethoscope is helpful for the diagnosis of developmental dysplasia of the hip.

Hip Dysplasia in Adults: Surgical Correction vs. Conservative Treatment Options

Introduction: Developmental Dysplasia of the Hip (DDH) is an anatomical deformation resulting from abnormal formation of the structures that make up the hip joint. Due to abnormal biomechanics patients with hip dysplasia usually develop radiographic osteoarthritis. Aim of the study: Despite the introduction of screening tests in children, DDH remains an issue among adults. For this group of patients, it is essential to begin treatment as early as possible to prevent early-onset osteoarthritis of the hip joint. In adults it is often too late to implement non-invasive methods such as braces or orthoses. Therefore, in this study, we aim to describe other treatment options for adults with DDH, considering both surgical and non-surgical methods. In the following work, we present both the advantages and complications associated with these surgical methods. Additionally, we describe the non-surgical alternative method of progressive resistance training (PRT) and consider the possibilities of combining it with surgical techniques. We also discuss the potential for pharmacological treatment. Material and Methods: Review of studies available through open-access sources on PubMed, Google Scholar, and the National Library of Medicine. Conclusions: The decision to quickly implement an appropriate treatment plan is crucial for improving the patient's quality of life. The choice of treatment method should consider the patient's age and the severity of the disease. Adults with DDH are most often qualified for surgical procedures, which include periacetabular osteotomy (PAO) and total hip replacement (THR). However, for some patients, surgical procedures may be contraindicated or impossible, and in such cases, other non-invasive methods, such as resistance training or appropriate pharmacotherapy, should be considered. Keywords: hip joint, osteoarthritis, surgery, conservative therapy, hip, Surgical Correction

Comparative study of total hip arthroplasty with and without femoral osteotomy in Crowe Ⅳ developmental dysplasia of the hip

To compare the clinical effects of total hip arthroplasty(THA) with and without femoral osteotomy in Crowe Ⅳ developmental hip dislocation(DDH). The data on 46 patients who underwent THA for unilateral Crowe Ⅳ DDH between 2012 and 2017 were analyzed retrospectively. They were divided into two groups according to the different surgical methods. There were 24 patients in the osteotomy group, 3 males and 21 females, with an average age of (47.3±9.0) years old ranged from 34 to 57 years old;and 22 patients in the non-osteotomy group, 2 males and 20 females, with an average age of (51.6±8.3) years old ranged from 40 to 61 years old. The operative time, bleed loss, postoperative drainage volume, postoperative complications, ROM of hip, Harris hip score, limb length discrepancy(LLD), and radiological data were recorded. The femoral dislocation height and the implantation depth of sleeve were measured. All patients were followed up. The mean follow-up time was (3.8±1.2) years ranged from 2 to 6 years in the osteotomy group and (3.2±0.9) years ranged from 1 to 5 years in the non-osteotomy group. The operative time(136.8±18.9) min, bleed loss (709.8±89.4) ml, postoperative drainage volume(308.8±98.2) ml of osteotomy group were all significantly greater than those of non-osteotomy group(100.7±15.8)min, (516.5±103.3) ml, (245.3±79.3) ml (P<0.05). The Harris score at the latest follow up was significantly increased compared with preoperative score in two groups (P<0.05), but there was no significant difference between two groups (P>0.05). The LLD at last follow up was significantly increased compared with preoperative LLD in two groups, the LLD in non-osteotomy group(0.7±0.2) cm showed signifcant smaller than the two osteotomy group(1.2±0.4) cm. Between osteotomy and non-osteotomy groups, the preoperative range of motion of hip joint [(89.5±19.7) °vs (102.5±16.8) °], the preoperative height of dislocation of femoral head [(4.56±0.61) cm vs (3.10±0.73) cm], the proximal implant depth of S-ROM [(0.93±0.36) cm vs (1.67±0.28) cm] was significantly different (P<0.05). Eleven patients in the osteotomy group still had claudication, and 4 patients in the non-osteotomy group had mild claudication (P<0.05). In non-osteotomy group, 3 patients developed nerve injury (1 patient of sciatic nerve, 2 patients of femoral nerve) and 1 case developed periprosthetic fracture. In osteotomy group, 2 case of dislocation and 2 cases of periprosthetic fractures. Whether osteotomy or not can achieve satisfactory results for treating Crowe type Ⅳ DDH and significantly improve LLD. However, osteotomy is more complex and time-consuming, limb length difference is greater, and the incidence of claudication is higher. Furthermore, patients with smaller preoperative hip mobility, higher femoral dislocation, limb lengthening≥4 cm and severely narrow femoral proximal canals are prone to be peformed with subtrochanteric osteotomy.

Decreased volume of rectus femoris and iliocapsularis in patients with femoroacetabular impingement syndrome after primary hip arthroscopy

Purpose(1) to investigate the consecutive changes in hip muscle volume in patients with femoroacetabular impingement syndrome (FAIS) during the initial postoperative period, and (2) to determine the potential effect of the early changes in hip muscle volume on clinical outcomes.MethodsData between March 2021 and March 2022 was reviewed. Patients diagnosed with FAIS based on clinical symptoms and radiographic findings, and undergoing hip arthroscopic treatment were included. Exclusion criteria were incomplete MRI data, prior history of hip surgery, and concomitant hip conditions including hip osteoarthritis with a Tönnis grade > 1, avascular necrosis, Legg-Calvé-Perthes disease, osteoid osteoma, synovial chondromatosis, pigmented villonodular synovitis, and developmental dysplasia of the hip (DDH). MRI was performed preoperatively and 3, 6, 12-month postoperatively. Cross-sectional area (CSA) of hip muscles including rectus femoris (RF), iliocapsularis (IC), iliopsoas (IP), gluteus medius/minimus complex (G-med/min), and gluteus maximus (G-max) were collected on MRI. The CSA was corrected by body surface area (BSA). Preoperative and a minimum of 2-year postoperative patient-reported outcome (PRO) scores including Visual Analog pain Scale (VAS), modified Harris Hip Score (mHHS), and international Hip Outcome Tool, 12-component form (iHOT-12) were collected. A multivariate linear regression model was built to determine the influence of the potential factors on postoperative PROs.ResultsA total of 76 patients were included in the study. Compared to the preoperative level, decreased volume of RF and G-max, and increased IC/RF ratio were observed at postoperative 3 months (all with P < .05). Both G-med/min and G-max presented decreased volume at postoperative 6 months (all with P < .05). G-med/min presented decreased volume (P = .001) at postoperative 12 months. Changes in RF at postoperative 3 months and 12 months were positively related to improvement of iHOT-12 (Beta = 0.371, P = .012 and Beta = 0.330, P = .026, respectively). Changes in IC at postoperative 6-month was positively related to improvement of mHHS (Beta = 0.367, P = .027) and iHOT-12 (Beta = 0.315, P = .044).ConclusionDuring the initial first year following arthroscopic treatment for FAIS, decreased volume of the RF and gluteal muscles was observed. Early changes in volume of RF and IC were positively correlated to the improvement of minimum 2-year PROs.Level of evidenceLevel IV; case series.

Epidermolytic Hyperkeratosis Type 1 with a New Heterozygous Mutation in KRT1 Gene: A Case Report

Background: Epidermolytic hyperkeratosis (EHK) formerly known as bullous ichthyosiform erythroderma, is a rare autosomal dominant inheritance condition with a prevalence ranging from 1:200,000 to 1:300,000. The underlying etiology of which is a mutation in the genes responsible for keratin proteins synthesis, primarily in KRT1 and KRT10 genes, cataloged under OMIM number 113800. Clinicopathological presentations include blistering in the neonatal period followed by ichthyotic hyperkeratosis in childhood and adolescence, characterized by the hallmark features of generalized dry skin, scaling, hyperkeratosis, and frequently associated with erythroderma. EHK may present with or without palmoplantar keratoderma involvement, depending on the keratin gene variant. Case report: A 24-year-old male of Arab descent was born with diffuse skin hyperkeratotic plates featuring erythematous fissures, covering his entire body, resembling a collodion baby. His birth was full-term via cesarean section without complications, although he later developed developmental dysplasia of the hip. By the time he started primary school, he began experiencing severe thickening of the skin around his joints, reducing flexibility and leading to contractures and significant disfigurement. He is undergoing treatment with acitretin. Genetic testing using Next-Generation Sequencing (NGS) was performed to identify the responsible gene, revealing a novel heterozygous variant in the KRT1 gene (OMIM 139350), while no variant was detected in the KRT10 gene. Conclusion: EHK type 1 manifests with a new heterozygous variant in the KRT1 gene. This rare disorder, associated with variant in genes related to keratin production such as KRT1 and KRT10, results in distinctive skin features present from birth, as well as joint problems and fungal foot infections. Genetic testing has confirmed the presence of a variant in the KRT1 gene.

Hip shelf acetabuloplasty in borderline dysplasia, an alternative between Periacetabular Osteotomy and arthroscopic procedures.

Surgical treatments for symptomatic borderline dysplastic hips (Lateral Center-Edge Angle: LCEA 18-25°) remain challenging, instability being the primary issue. Currently, treatment options include arthroscopic procedures or peri-acetabular osteotomy (PAO). Although the popularity of the acetabular shelf bone block has declined in favor of PAO, it may still be relevant as a hip joint stabilizer and coverage area, rather than for increasing coverage area by cartilage. We analyzed clinical and radiographic outcomes of 23 borderline hips after undergoing shelf procedure with a minimum follow-up of two years. This is a retrospective descriptive study. Clinical evaluations (modified Harris Hip Score: mHHS, Non-Arthritic Hip Score: NAHS, International Hip Outcome Tool: iHOT12) and radiographic assessments were performed before and after surgery. We collected data on revision surgery rates, associated surgical procedures (labrum, impingement), complications, arthrosis progression, and conversion to total hip replacement (THR). The mean LCEA was 21°, and the mean follow-up period was five years (2 to 14 years). Clinical scores showed significant improvement at the last follow-up, mHHS increasing from 47 to 72 (p < 0.001), NAHS from 42 to 68 (p < 0.001), iHOT12 from 28 to 52 (p < 0.001), and pain levels decreasing from 7 to 3. Revision surgery rate was 13%, and complication rate was 8%. No osteoarthritis beyond Tönnis grade 2, and no cases required conversion to THR. Arthroscopic procedures and PAO have shown promising results in the treatment of borderline hips. The hip shelf procedure appears to be a simple and effective treatment for stabilizing borderline hips, with favorable outcomes for 80% of patients and a low rate of arthritic progression. Shelf procedure could be a valuable addition to the therapeutic options for painful borderline dysplasia of the hip.

Hip joint rice body bursitis combined with hip dysplasia and pelvic fracture: a case report

BackgroundRice body formation is an uncommon, nonspecific inflammatory process. Certain clinical features, such as chronic synovitis associated with rheumatoid arthritis, tuberculous arthritis, and osteoarthritis, can induce a non-specific response that may lead to the development of rice bodies. Currently, the etiological and prognostic significance of rice bodies remains unknown. Magnetic resonance imaging (MRI) is the preferred diagnostic imaging modality for evaluating rice body formation.Case presentationThe patient, a 44-year-old female, presented with bursitis of the hip joint and the presence of numerous rice bodies. This case is exceptionally rare and unusual as it involves a combination of hip dysplasia and pelvic fracture. The patient underwent a one-stage resection of the rice body, internal fixation of the acetabular fracture, and two-stage total hip arthroplasty, resulting in an immediate improvement in her symptoms. We reviewed the relevant literature and observed that the majority of rice bodies were predominantly found within the capsules of the shoulder and knee joints, while instances of hip joint rice body bursitis were relatively infrequent. To our knowledge, there have been no previous reports documenting a case of hip joint rice body bursitis in conjunction with hip dysplasia and pelvic fracture.ConclusionThis paper presents the rare case of hip joint rice body bursitis combined with hip dysplasia and pelvic fracture, and is one of the highlights.

Incidence of hip problems in developmental central hypotonia: A scoping review.

To describe what is known about hip problems in individuals with developmental central hypotonia. Searches were conducted in five databases to October 2023. Down syndrome was excluded from this analysis of less well-known genetic diagnoses. At least two reviewers independently screened titles, abstracts, read full-text articles, and extracted data. Of 89 full-text articles, 79 met inclusion criteria. Studies included 544 individuals aged 1 month to 63 years with Kabuki, 49, XXXXY, Prader-Willi, PURA, Koolen de Vries, Emanuel, TRPM3, Wolf-Hirschhorn, and other rare syndromes. Most diagnoses may be associated with a combination of differences in hip structure or stability that are evident at birth, or develop in early infancy, with increasing hip dysplasia and subluxation over time. Joint or ligamentous laxity was most reported along with hypotonia and hypermobility as risk factors. Limited data were identified about conservative or surgical intervention and outcomes in these populations. Children with significant hypotonia, with or without a confirmed genetic diagnosis, are at increased risk of hip problems that may be missed with standard neonatal screening. Ultrasound is recommended between 6 weeks and 6 months, and annual orthopaedic review with regular radiographs for older children and adults with significant and persistent hypotonia.

Comparison of treatment methods in patients with developmental dysplasia of the hip.

This study aimed to compare the results of Pemberton osteotomy (PO), Salter innominate osteotomy (SO), open reduction (OR), and closed reduction (CR) applied in the treatment of developmental dysplasia of the hip (DDH). Included in the study were 101 hips of 82 patients treated at our orthopedic clinic between 2017 and 2023. The patients were evaluated preoperatively, postoperatively, and at the final follow-up. The results were evaluated based on Barret's clinical and Severin's radiological classifications. Those who developed avascular necrosis (AVN) were evaluated based on Bucholz-Ogden's classification. In terms of the preoperative acetabular angles (AAs), those for hips treated with PO were significantly higher than those of the other three, and those treated with SO were significantly higher than those of the other two (OR and CR) (p < 0.001). There was a significant difference in the final follow-up AAs of those treated with SO and PO compared to those treated with OR and CR (p < 0.001). The best corrections were achieved with PO (average: 27.94 ± 4.89°). There was a significant difference between PO and OR, and PO and CR in terms of the preoperative collodiaphyseal angles (CDAs) (p < 0.05). The greatest decrease was in those treated with PO (average: 22.44 ± 9.45°). AVN developed at various stages in 15 of 79 hips (14.85%) that were treated surgically. While AVN developed at a rate of 22.22% with PO, 18.18% with SO, and 17.85% with OR, no AVN developed in the 22 hips treated with CR. Understanding normal and abnormal values by age is essential for selecting appropriate treatments. Acetabulum-related surgeries should be planned for patients over 1.5 years of age with an AA above 30°. Early diagnosis and CR treatments yield excellent results and low AVN rates. Various DDH treatments in our clinic have shown low AVN rates, indicating safety and efficacy.