Lateral Approach Group Research Articles

Factors associated with prolonged wound drainage after hemiarthroplasty for hip fractures in elderly.

The aim of this study was to determine the incidence of prolonged wound drainage (PWD) and the amount of drainage fluid after hip hemiarthroplasty (HA) and to investigate the risk factors for the development of PWD associated with the patient, fracture and surgical treatment. Data from 313 patients who underwent HA were prospectively analysed. The mean drainage time and drainage amount of patients with PWD were calculated. Patient demographic data, pre-operative ASA scores and anticoagulation status, presence of diabetes, fracture type, surgical approach, femoral stem type, cable usage, amount of drain output, blood transfusion quantity, time from injury to surgery, time from surgery to discharge and patient blood tests were investigated. The incidence of PWD after HA was 8.9% (28 patients). The mean drainage time in patients with PWD was 4.9 ± 1.85 (3-9) days, and the mean collected total fluid volume was 51.1 ± 26.9 (21-132) mL. PWD was more commonly observed in the lateral approach group (p < 0.001) and morbidly obese patients (p < 0.001). In the PWD group, the mean post-operative first-day haemoglobin value was lower (p < 0.001), more blood transfusions were required (p < 0.001) and the amount of drainage output from the closed suction drain (CSD) was higher (p < 0.001). The duration of hospitalization was longer in patients with PWD (p < 0.001). Lateral approach, morbid obesity and increased drainage output were found to be associated with PWD in logistic regression analysis. Lateral approach, morbid obesity and increased drainage output were found to be risk factors for the occurrence of PWD.

Safety of the anterior approach versus the lateral approach for chest tube insertion by residents treating spontaneous pneumothorax: a propensity score weighted analysis.

To compare the risk of chest tube malposition, the most common complication during chest tube insertion, with the anterior or lateral approach for thoracostomy performed for patients with spontaneous pneumothorax by junior and senior residents. We retrospectively included patients aged ≥ 20years who exhibited primary or secondary spontaneous pneumothorax without pleural adhesion and underwent chest tube drainage performed by junior or senior residents at tertiary care hospital. The study exposure involved insertion of the chest tube in the midclavicular line (anterior approach) or the anterior or midaxillary line (lateral approach). The primary outcome was the number of chest tube malpositions. Multiple imputation was used for missing data. The inverse probability of treatment weighting method was used to adjust for baseline confounders. We identified 34 and 219 patients who underwent thoracostomy using the midclavicular and lateral approaches, respectively. The number of chest tube malpositions was 4 (11.8%) in the anterior approach and 34 (15.5%) in the lateral approach. The inverse probability of treatment weighting analysis revealed that the estimated odds ratio for chest tube malposition in the anterior approach group versus the lateral approach group was 0.61 (95% confidence interval, 0.17-2.11). The duration of chest tube drainage and the number of operations for persistent air leaks were not significantly different between the groups. The current study revealed that the risk of chest tube malposition in thoracostomies with the midclavicular approach was not different from that with the lateral approach.

Does the Approach of the Lateral Platysmal Bands Widen the Gap between the Medial Bands?

Background:The first visible change in an aging face and neck is the loss of neck contour, which can be corrected by treating the platysmal bands; however, it remains unclear as to which is the best strategy to approach these bands. The aim of the present study is to verify whether the lateral platysmal bands approaches, before the medial ones, cause widening of the gap between them.Methods:This is a prospective, randomized, comparative study involving 30 individuals presenting various stages of neck and facial flaccidity and sagging. The patients were split into 2 groups according to the lateral platysmal approach (group A: lateral platysmal traction/plication; group B: lateral platysmal undermined/traction). A protocol was established to measure the gap between the medial bands, 3 and 5 cm away from the chin, before and after superficial musculoaponeurotic system/platysma lateral suspension. Measurements were taken using a compass and a ruler. The endpoint was to determine whether the gap between the medial platysmal bands widens after the lateral procedure.Results:Group A, first measure (1-M): the gap ranged between 1.0 and 1.6 cm in point M3 (3 cm away from chin) and between 1.8 and 3.0 cm in point M5 (5 cm away from chin) (mean in M3 = 1.2; SD, 0.22 and mean in M5 =2.3; SD, 0.52). Group A, second measure (2-M): the measure ranged between 1.0 and 1.7 cm in point M3 and between 1.8 and 3.2 cm in point M5 (mean = 1.28; SD, 0.25 and mean = 2.42; SD, 0.63, respectively). Group B, first measure (1-M): the gap ranged between 1.1 and 1.7 cm in M3 (mean = 1.32; SD, 0.21) and between 1.8 and 3.2 cm in M5 (mean = 2.38; SD, 0.57). Group B, second measure (2-M): the measure ranged between 1.2 and 1.7 cm in M3 (mean = 1.4; SD, 0.18) and between 2.0 and 3.2 cm in M5 (mean = 2.5; SD, 0.55). Group A: P = 0.07 (M3) and 0.10 (M5); Group B: P = 0.09 (M3) and 0.07 (M5).Conclusion:The lateral platysmal approach, plication or undermined, does not lead to a widening of the gap between the medial platysmal bands.

Are physical therapy pain levels affected by surgical approach in total hip arthroplasty? A randomized controlled trial.

The main objective of this study was to evaluate the difference in pain levels during postoperative physical therapy pathways in patients who underwent a cement less total hip replacement either through a muscle sparing direct anterior approach (DAA), or the classic trans-gluteal lateral approach (LA). One hundred and twelve (112) patients were randomized into two equal groups. Baseline values of myoglobin levels were acquired prior to surgery and repeated at 6 hours postoperatively as a biomarker for muscle damage. Pain levels during the first passive and consecutive 3 active physical therapy sessions were noted using a visual analogue-numeric scale (VAS). Pain levels were also acquired at 6 weeks, 3 months, 6 months and 1 year, following a 20-meter (65.6 feet) walking test. Postoperative myoglobin (ng/mL) levels were significantly higher (p< 0.05) in the LA group (335.05±83.54) then the DAA group (237.71±57.54). Pain levels were significantly lower (p<0.001) in the DAA group for both passive (2.5±1.45 vs. 4.28±2.19) and active physical therapy sessions and there was a positive correlation between postoperative myoglobin levels and pain levels until 6 postoperative weeks. There was no significant difference in demographics between the two groups except for gender distribution. The direct anterior approach’s main advantage of being a minimally invasive muscle sparing technique is showing a better rehabilitation experience with lower pain levels during passive and active physical therapy when compared to the classic trans-gluteal lateral approach.

Correlation analysis of the influence of direct lateral approach and posterolateral approach on reoperation and dislocation in patients with femoral neck fracture

To compare the relationship between direct lateral approach and posterolateral approach in the treatment of femoral neck fracture, and to provide reference for the choice of the best approach. From January 2015 to December 2018, 266 patients with femoral neck fracture underwent hip replacement were selected, including 154 males and 112 females, aged 58 to 74 (69.8±8.1) years. Direct lateral approach and posterolateral approach were used in 133 cases in each group. The difference of reoperation rate and dislocation rate between the two groups was compared. Cox proportional risk regression model was used to evaluate the potential factors of reoperation and dislocation after total hip replacement. The rate of reoperation and dislocation in direct lateral approach group was lower than that in posterolateral approach group (P<0.05) . Cox proportional risk regression model showed that posterolateral approach had higher postoperative reoperation rate and dislocation rate than direct lateral approach, and its relative risk ratio (95%CI) was, reoperation［2.65 (1.23- 5.36) , P=0.02］; dislocation［5.15 (1.68-9.15) , P=0.01］. Posterolateral approach is the influencing factor of reoperation and dislocation after hip replacement. Age, gender, cognitive dysfunction, replacement position, ASA score and other factors have no effect on reoperation and dislocation.

Lateral Approach Versus Combined Lateral and Anteromedial Approach for Surgical Treatment of Terrible Triad of Elbow: A Meta-Analysis.

Objective:To find out which surgical approach, optimize the functional outcomes and reduce the risk of complications in terrible triad of elbow".Methods:Medline, EMBASE, Cochrane Library, and Google Scholar were searched to identify relevant studies, which were included if they were retrospective or prospective in design, involved participants who had terrible triad of elbow (TTIE) that compared lateral approach (LA) with combined lateral and anteromedial approach (CML), and were published in English. Outcomes of interest were functional outcomes, complications, and operative time.Results: Four studies, involving 470 patients were included in the systematic review. Mean follow up after surgery was typically 24 to 30 months. We found significant more range of motion (ROM) of elbow in CML as compared to LA group (MD: -14.21, 95% CI: -21.13 to-7.29, p<0.00001). There was significant more forearm rotation in CML as compared to LA group (MD: -18.88, 95% CI: -32.35 to -5.40, p<0.00001). Mayo elbow performance score (MEPS) was significantly more in CML (MD: -3.31, 95% CI: -7.23 to 0.62, p=0.00001). Blood loss, operative time, VAS and complications were more in CML group; however, the difference was not significant. The heterogeneity of the study and synthesizing retrospective data were the primary limitations. Conclusion:Our analysis demonstrated that combined lateral and medial approach had significantly more elbow ROM and forearm rotation. The combined approach also had significantly more MEPS. However, using combined approach significantly increased the operative time.

Effect of minimally invasive plate osteosynthesis through two approaches on bone metabolic activity and radial nerve injury in patients with humeral midshaft fracture

To compare application of minimally invasive plate osteosynthesis (MIPO) through two approaches for patients with humeral midshaft fracture, and analyzes the effect on bone metabolic activity and radial nerve injury. From April 2014 to May 2017, 76 patients with humeral midshaft fracture treated by MIPO were selected and randomly divided into group A (anterior approache group) and group B (lateral approach group) according to random number stable. In group A, there were 38 patients including 22 males and 16 females, aged from 18 to 74 years old with an average age of(48.21±5.79) years old; 24 patients were caused by traffic accidents, 6 patients were caused by heavy object crushing, 8 patients were caused by falling down; 20 patient were on the right side, 18 patients were on the left side; 15 patients were type A, 17 patients were type B, 6 patients were type C according to AO classification; the patients were treated by MIPO through anterior approach. In group B, there were 38 patients including 23 males and 15 females, aged from 20 to 73 years old with an average age of(48.40±5.81) years old; 26 patients were caused by traffic accidents, 5 patients were caused by heavy object crushing, 7 patients were caused by falling down; 17 patients were on the right side, 21 patients were on the left side; 15 patients were type A, 18 cases were type B, 5 cases were type C according to AO classification; the patients were treated by MIPO through lateral approach. Intraoperative blood loss, operative time, hospital stays, fracture healing time between two groups were compared. Bone gla protein (BGP), collagen C-terminal peptide (CTX) and osteoprotegerin (OPG) were tested before and after operation. The incidence of radial nerve injury after operation was observed. All patients were followed-up from 12 to 18 months with an average of (15.4±2.1) months. There were no statistical differences in operative time, intraoperative blood loss between two groups. Hospital stays, fracture healing time in group A were(6.52±1.81) d, (13.27±3.01) weeks respectively, while in group B were(9.61±1.99) d, (14.83±3.08) weeks; and had differences between two groups. There were no differences in BGP, OPG and CTX, BGP between two groups and OPG in group A at 1 month after operation were(7.10±0.58) ng/ml, (173.67±9.12) pg/ml and higher than that of group B(6.63±0.62) ng/ml, (152.80±9.23) pg/ml; while CTX in group A (224.52±12.67) μg/ml was lower than that of group B(259.13±13.54) μg/ml(P<0.05). No patient occurred radial nerve injury in group A, 4 patients occurred radial nerve injury in group B, and had statistical differences between two groups(χ²=4.220, P<0.05). Compared with lateral approach, anterior approach has much more effective in minimally invasive MIPO for humeral shaft fractures, which could improve bone metabolism and reduce risk of radial nerve injury.

Thoracolumbar corpectomy/spondylectomy for spinal metastasis: a pooled analysis comparing the outcome of seven different surgical approaches.

To compare surgical outcomes between seven different approaches for thoracolumbar corpectomy/spondylectomy in the setting of spinal metastasis. A systematic review of literature was performed including articles on corpectomy for thoracolumbar spinal metastasis. Data were extracted and sorted by surgical approach: en bloc spondylectomy (group 1), transpedicular (group 2), costotransversectomy (group 3), mini-open retropleural/retroperitoneal (group 4a), lateral extracavitary approach (group 4b), open transthoracic/transretroperitoneal (group 5), and thoracoscopic (group 6). Comparison of demographics, blood loss, directly procedure related complications, operating time, and postoperative improvement of pain. A total of 63 articles were included comprising data of 774 patients with various primary tumor entities. Mean age was 51.8years, 54% of patients were female, on average 1.46 levels were treated per patient, and mean follow-up was 1.59years. The following statistically significant findings were observed: Blood loss was lowest for the mini-open retropleural/retroperitoneal (917ml), thoracoscopic (1107ml) and transthoracic approach (1172ml) versus the posterior approach groups (1633-2261ml); directly procedure related complications were lowest for mini-open retropleural/retroperitoneal and thoracoscopic approach (0% each) versus 7-15% in the other groups; operating time was lowest in mini-open retropleural/retroperitoneal approach (184min) versus 300-588min in the other groups. Less invasive approaches (mini-open retropleural/retroperitoneal and thoracoscopic) not only had superior outcome in terms of blood loss and operating time, but also were shown to be safe techniques in cancer patients with low rates of procedure-related complications. These slides can be retrieved under Electronic Supplementary Material.

Outcome following swashbuckler modified anterior approach versus lateral approach for management of complex distal femur fractures: A prospective comparative study

Background: Distal femur fractures with intra articular extension and comminution are exacting injuries, rife with complications such as malunion and stiffness. We prospectively evaluated and compared a consecutive series of patients with AO type C distal femur fractures to determine the clinicoradiological outcome after fixation with a single locked plate using swashbuckler approach(modified anterolateral) and standard lateral approach. Materials and Methods:120 patients with C type distal femur fractures (mostly type C2 and C3) were treated with distal femur locking compression plate (DF-LCP), 60 using swashbuckler approach and 60 using standard lateral approach, were included in the study. The clinical outcome at 1 year was determined using the Neer’s Score.Results: All fractures united at a mean of 14.64 weeks (range 12-20 weeks). In our study mean duration of surgery for lateral approach group was greater (99.6min) than swashbuckler group (85min).There were no significant complications such as nonunion, deep infection, and implant failure. Mean ROM in swashbuckler group was 100.83 degree compared to 83.83 in lateral group. Mean Neer’s score was 76.96 in lateral approach group compared to 81.83 Neer’s score in swashbuckler approach. Excellent results were seen in 19 cases (63.3%) in swashbuckler group as compared to 13 cases (43.3%) in lateral approach group.Conclusion: The results of complex C type distal femur fractures, fixed with a single distal femur locking compression plate (DF-LCP) using a swashbuckler approach as compared to standard lateral approach are affirmative and comparable with a majority of patients achieving good to excellent outcome at 1 year especially in complex C3 fractures.

Comparison of lateral approach versus anterolateral approach with Herbert screw fixation for isolated coronal shear fractures of humeral capitellum

BackgroundFor coronal shear fractures of humeral capitellum, the lateral approach is the most commonly used surgical approach. However, exposure range of the anterior aspect of the distal humerus is inadequate. The anterolateral approach has also been adopted to overcome this disadvantage. However, this approach seems anatomically complex due to the risk of iatrogenic injury to the radial nerve. So far, the optimal approach for the treatment of capitellar shear fractures remains inconclusive. The purpose of this study is to prospectively review and compare the early clinical and radiographic outcomes of treated with open reduction and Herbert screw internal fixation through the lateral approach or the anterolateral approach.MethodsTwenty-six patients with isolated capitellar shear fractures were enrolled from January 2013 to December 2017, and randomly assigned to lateral approach group or anterolateral approach group. All the fractures were treated with open reduction and Herbert screw internal fixation through lateral approach or anterolateral approach. Operation time, wound healing complication, elbow joint function, and radiographic evidence were evaluated and compared between two groups.ResultsThe operation via the anterolateral approach took significantly shorter time than via lateral approach (p < 0.05). There were no wound healing problems and infection for both groups. One patient from anterolateral approach group sustained incomplete posterior interosseous nerve palsy, which recovered completely in 4 weeks without residual compromise. All fractures healed well in their normal anatomic position as seen on radiographs. At the final follow-up, no significant difference was found between two groups with respect to the ROM in supination-pronation, ROM in pronation-supination, loss of flexion-extension motion, or loss of pronation-supination motion (p > 0.05). There is no significant difference with respect to MEPI score of elbow joint between two groups (p > 0.05).ConclusionBased on our findings, both lateral approach and anterolateral approach with Herbert screw internal fixation are suitable for coronal shear fractures of capitellum with satisfactory early outcomes. Compared with the lateral approach, the anterolateral approach made the surgical procedure easier and time saving in current series. When the medial aspect of the trochlea is involved for capitellar coronal fractures, the anterolateral lateral approach should be preferred.

Decrease surgery time by using an alternative lateral parapatellar approach for tibia shaft fracture nailing.

Medial parapatellar or transpatellar ligament approaches are commonly used for nail osteosynthesis in tibia shaft fractures. The lower leg is normally in a hanging position to allow guide wire insertion and reaming of the tibia. However, this position complicates fracture reduction and retention, as well as image intensification throughout the procedure. A lateral parapatellar approach with the lower leg in a semi-extended, horizontal position has been previously described for proximal tibial fracture fixation. The purpose of the presented study was to share the lateral parapatellar approach technique used in our institution and to analyse its feasibility for tibia shaft fracture fixation when compared to a medial parapatellar and transpatellar incision technique. All patients with tibial shaft fractures treated at our institution between 2009 and 2012 by intramedullary nailing through either a transpatellar, a medial parapatellar or a lateral parapatellar approach were reviewed. Demographics, injury pattern and the operative procedure, especially operation and fluoroscopy time, were analysed. 73 patients were enrolled into the study. Twenty-six patients were treated by use of a lateral parapatellar approach, whilst a transpatellar or a medial parapatellar approach was chosen in 29 and 18 cases, respectively. Patients' characteristics were similar regarding gender and body mass index. When compared to the transpatellar (126 ± 30min) or the medial parapatellar approach (105 ± 29min), surgical time was significantly shorter in the lateral parapatellar approach group (96 ± 29min). Likewise, shorter image intensifier time was documented when a lateral parapatellar approach was chosen (211 ± 189 s) compared to the transpatellar (347 ± 204 s) or the medial parapatellar approach (241 ± 222 s). The extra-articular semi-extended tibial nailing technique using a lateral parapatellar approach was associated with a significant decrease in time of surgery, while fluoroscopy time was shorter but not significantly different between the three groups.

A comparative study between swashbuckler approach (Modified Anterior Approach) and lateral approach for the distal femur fractures

Background: Distal femur fractures with intra-articular extension and comminution are challenging injuries, fraught with complications such as mal-union and stiffness. We prospectively evaluated and compared a consecutive series of patients with AO type B and C distal femur fractures to determine the clinico-radiological outcome after fixation with distal femur locking compression plate using Swashbuckler approach and standard lateral approach. Materials and Methods: 60 patients with AO Muller's type B and C distal femur fractures (mostly type C2 and C3) were treated with distal femur locking compression plate (DF-LCP), 30 patients using swashbuckler approach and 30 patients using standard lateral approach. The regular follow-up up to 1 year was done and results were determined using the Neer’s Score. Results: All fractures united at a mean of 14.64 weeks (range 12-20 weeks). In our study mean duration of surgery for lateral approach group was greater (99.6min) than swashbuckler group (85 min). Mean ROM in swashbuckler group was 100.83 degree compared to 83.83 in lateral group. Mean Neer’s score was 76.96 in lateral approach group compared to 81.83 in swashbuckler approach group. Complication rate was similar in both the group. Conclusion: The results of distal femur fractures using a swashbuckler approach are encouraging and comparable to standard lateral approach with a majority of patients achieving good to excellent outcome at 1 year especially in complex AO type C3 fractures.

Range of Motion Following Total Ankle Replacement and Subtalar Fusion Through Lateral Versus Anterior Approach. Biomechanics Analysis

Category: Ankle Arthritis Introduction/Purpose: A gait analysis of patients who underwent simultaneous total ankle replacement (TAR) and subtalar fusion allows to assess the ankle range of motion (ROM) with precision. In healthy subjects or in patients who underwent isolated TAR this is not possible because it is influenced by the subtalar ROM and it is not possible to analyse the two joints separately. Excluding the role of the subtalar joint, it is possible to analyse the consequences of different prosthetic designs and different surgical approaches on joint kinematics. The aim was to evaluate and compare with a gait analysis the effects of two different TAR designs on the functionality of the tibiotalar joint by exploiting the exclusion of the subtalar effect determined by the subtalar fusion simultaneously performed. Methods: Minimum follow-up was 12 months. 16 patients underwent a fix-bearing TAR through lateral approach (Zimmer Trabecular Metal Total Ankle), 7 patients underwent a mobile-bearing TAR through anterior approach (Hintegra). A six-camera motion capture system was used to measure foot static posture and foot segment kinematics. Rotations in the sagittal, frontal, and transverse planes between shank and the whole foot, shank and calcaneus, calcaneus and midfoot, midfoot and metatarsus, and calcaneus and metatarsus were calculated. Sagittal and transverse plane rotations of the first matatarso-phalangeal joint, medial longitudinal arch deformation, transverse plane angle between first and second metatarsal bone and between second and fifth metatarsal bone, and sagittal plane orientation of the first and second metatarsal bone with respect to the ground were also calculated. The following spatio-temporal parameters were calculated: stance time, swing time, stride length, normalized stride length, cycle time, cadence, walking speed, and normalized walking speed. Results: On average, the lateral approach group walked at a faster speed and with a longer stride length than the anterior approach group. However, spatio-temporal parameters in both groups were generally lower than the control values. No major differences were detected between the two groups in terms of ROM in any foot joint, with the exception of the frontal-plane motion of the midfoot with respect to the calcaneus (midtarsal joint) which was larger in the anterior approach group. Conclusion: patients with TAR through lateral approach seem to walk at a faster speed and with a longer stride length than patients with TAR through anterior approach; the midtarsal joint ROM was larger in the anterior approach group and this could mean that mobile bearing TARs through an anterior approach could lead to an overload of the midtarsal joint with respect to fixed-bearing TARs through a lateral approach. However, further studies with larger samples of patients are needed to confirm these results.

A psoas splitting approach developed for outpatient lateral interbody fusion versus a standard transpsoas approach.

The technique of transpsoas lateral interbody fusion has been adopted to avoid direct anterior interbody fusion, but lateral fusions have been limited to disc spaces above L5 and are associated with neurologic injuries especially to the lumbar plexus when approaching L4-5. The authors aim to demonstrate a psoas splitting technique to decrease risk of complications associated with the standard transpsoas technique. Medical records of 84 patients with prospectively collected data reviewed. Two groups created 44 patients with standard lateral transpsoas approach (group 1) and 40 patients with psoas splitting approach (group 2). The psoas splitting approach utilizes two blades placed anteriorly and posteriorly to split the psoas fibers anteriorly while keeping the posterior blade docked in place where it enters the psoas muscle. The cephalocaudal blades sit above the psoas muscle measuring 30-40 mm shorter than the posterior docking blade. Thirty-nine males and 45 females, age range 31-71 years, average 58±2 years. Average body mass index (BMI) was 28.4±1.1 kg/m2. Mean preoperative standard approach Oswestry disability index (ODI) increased from 48.4±3.0 to 55.2±4.0 compared to psoas splitting approach preoperative ODI means reduced from 45.1±5.0 to 34.9±6.0 (P=0.010). Group 1 mean preoperative visual analogue scale (VAS) score improved from 7.8±0.3 to 3.8±0.6 compared to group 2 mean preoperative VAS score which improved from 7.2±0.4 to 2.7±0.5 (P=0.048). Major complication rate of 20.5% was noted in standard transpsoas approach patients, including inability to walk and dermatome numbness. The outcomes of this study have shown that patients who had lateral lumbar interbody fusion (LLIF) with the psoas splitting approach had statistically significant improvement in ODI scores compared to the standard approach. Fusion was achieved in all patients and there was no evidence of implant failure or subsidence. In the psoas splitting group the major complication rate was only 5%.

Radiographic cup position following posterior and lateral approach to total hip arthroplasty. An explorative randomized controlled trial.

The two most common surgical approaches to total hip arthroplasty are the posterior approach and lateral approach. The surgical approach may influence cup positioning and restoration of the offset, which may affect the biomechanical properties of the hip joint.The primary aim was to compare cup position between posterior approach and lateral approach. Secondary aims were to compare femoral offset, abductor moment arm and leg length discrepancy between the two approaches. Eighty patients with primary hip osteoarthritis were included in a randomized controlled trial and assigned to total hip arthroplasty using posterior approach or lateral approach. Postoperative radiographs from 38 patients in each group were included in this study for measurement of cup anteversion and inclination. Femoral offset, cup offset, total offset, abductor moment arm and leg length discrepancy were measured on preoperative and postoperative radiographs in 28 patients in each group. We found that mean anteversion was 5° larger in the posterior approach group (95% CI, -8.1 to -1.4; p = 0.006), while mean inclination was 5° less steep (95% CI, 2.7 to 7.2; p<0.001) compared with the lateral approach group. The posterior approach group had a larger mean femoral offset of 4.3mm (95% CI, -7.4 to -1.3, p = 0.006), mean total offset of 6.3mm (95% CI, -9.6 to -3; p<0.001) and mean abductor moment arm of 4.8mm (95% CI, -7.6 to -1.9; p = 0.001) compared with the lateral approach group. We found a larger cup anteversion but less steep cup inclination in the posterior approach group compared with the lateral approach group. Femoral offset and abductor moment arm were restored after total hip arthroplasty using lateral approach but significantly increased when using posterior approach.

Clinical application of different operative approach of total knee replacement in knee valgus patients. Retrospective cohort study

PurposeAccording to the severity of knee valgus, different operative approaches were applied in total knee replacement. Hence, we assessed the safety and efficacy of different operative approaches in the level IV study. MethodsFrom May 2011 to March 2014, a retrospectively analysis was conducted among 31 patients with knee valgus (mild in 10 cases, moderate in 8 cases and severe in 13 cases based on Keblish grade). Medial approach trip knee replacement was performed in mild and moderate patients, which were assigned as medial approach group. Lateral approach was performed in severe patients, which was assigned as lateral approach group. Relevant results were compared between medial approach group and lateral approach group, including valgus corrected angle, postoperative knee joint activity and Kss score. Furthermore, operative time, postoperative blood loss, patellar trajectory and anterior knee pain were also compared between the two groups. ResultsAll operations were successful without obvious complications. In medial approach group, postoperative knee valgus angle was (7 ± 1)°. Three months after operation, degree of knee joint activity was (85.2 ± 5.2)°, and KSS score of knee joint was (80.1 ± 5.2). Significant differences were detected in these compared with preoperative data (all P < .05). Moreover, similar results were found in lateral approach group with postoperative knee valgus angle as (8.2 ± 2.3)°, degree of knee joint activity three months after operation as (85.2 ± 5.3)°, and KSS score of knee joint as (80.3 ± 3.2). However, no significant differences were found among these three groups in operative time, postoperative blood loss, patellar trajectory or anterior knee pain. ConclusionsDifferent operative approaches in total knee replacement according to the severity of knee valgus were proved as effective and safe procedures, which deserved further application.

Clinical Outcomes and Survivorship of Lateral Unicompartmental Knee Arthroplasty: Does Surgical Approach Matter?

BackgroundLateral unicompartmental knee arthroplasty (UKA) has been shown to be an effective procedure to treat isolated lateral compartment osteoarthritis with excellent long-term survivorship. Whether a medial parapatellar approach or a lateral parapatellar approach is superior in lateral UKA is unknown. The purpose of this study was to determine if there is a difference in intermediate-term clinical outcomes in patients undergoing lateral UKA through a lateral vs medial parapatellar approach. MethodsWe retrospectively reviewed a consecutive series of 65 patients who underwent lateral UKA with a minimum of 2-year follow-up. Fifty-two patients (80%) had a lateral approach and 13 (20%) a medial parapatellar approach. Patient demographics, preoperative and postoperative radiographic findings, need for revision surgery, Knee Society Score, and range of motion were assessed. ResultsOverall survivorship was 94% at a mean of 82 months; with the sample size available for study, there was no difference in survivorship between the groups. There was no difference in Knee Society Score or revision to total knee arthroplasty (5% vs 7%, P = 1.000) between the medial and lateral approach groups. Comparatively, the lateral approach group did have significantly greater postoperative flexion (123.6° vs 116.5°, P = .006) and greater improvement in flexion from preoperative measurements (3.0 vs −8.0°, P = .010). ConclusionAlthough our sample size was small, we could not demonstrate a difference in revision rates or clinical outcome scores when comparing a lateral or a medial approach with lateral UKA at intermediate-term follow-up. A lateral approach did have greater postoperative flexion, but its clinical significance remains undetermined.

Superficial and Deep Infections Rate in Primary Total Ankle Replacement through Anterior Approach versus Lateral Transfibular Approach

Category: Ankle, Ankle Arthritis, Periprosthetic Infections Introduction/Purpose: Periprosthetic joint infections represent a relatively infrequent complication following total ankle replacement (TAR), with reported incidence ranging from 2% to 8,6%. Early treatment of any wound infection is the key to prevent disastrous outcomes. One of the most recent TARs (Zimmer Trabecular Metal Total Ankle, Zimmer Biomet, Warsaw, IN) requires implantation through a lateral transfibular approach. Potential advantages of this approach include the supposed decreased risk of wound complications, thanks to a preservation of the distal leg angiosomes. The purpose of this study is to retrospectively compare the rate of superficial and deep infections between TARs performed through an anterior approach and TARs performed through a lateral transfibular approach at 12-months follow-up. Methods: This study included 150 consecutive primary TARs performed between May 2011 and July 2015 with at least 1-year follow up. The 3-component uncemented Hintegra implant (Newdeal SA, Lyon, France) was used in 81 TARs (54.0%) through an anterior approach (group A). The 2-component uncemented Zimmer Trabecular Metal Total Ankle prosthesis, was implanted in 69 TARs (46.0%) through a lateral transfibular approach (Group B). Operative time, tourniquet time and superficial and deep infections were recorded up to 1-year follow-up. All patients were clinically and radiologically evaluated postoperatively at two, six and twelve months. Superficial wound infections were classified as dehiscence, eschar, or wound drainage according to criteria of the Centers for Disease Control and Prevention for surgical wound infection. Deep infections were classified according to Fitzgerald’s classification: acute postoperative, deep late infections, late hematogenous infections. We compared the incidence of superficial and deep infections as well as the operative time. Results: In group A there were 4 (4.9%) superficial infections. Two of these patients developed a deep infection. Overall, there were 3 (3.7%) deep infections in group A that required: intravenous antibiotics and vacuum assisted closure; replacement of the tibial component and polyethylene liner; polyethylene exchange and VAC treatment. In group B, there were 2 (2.9%) superficial infections. One of these patients developed the only deep infection (1.4%) that was treated with antibiotic-impregnated cement spacer. There was no statistically significant difference in terms of superficial (P= 0.687) and deep infections (P= 0.625). The mean operative time in group A was 115.2 minutes (65-150) and 179.5 minutes (105-333) in group B. Operative time was statistically different between group A and group B (P &lt;0.001). Conclusion: This study demonstrates a lower superficial and deep infection rate in the lateral transfibular approach group compared to the anterior approach group. Nonetheless, this difference was not statistically significant. The significantly longer operative time in the lateral approach group did not seem to affect the infection rates. In conclusion, TARs performed through a lateral approach appear to be as safe as TARs done through an anterior approach in terms of the infection rate within the first postoperative year. Further studies on larger cohorts and longer follow-up are essential to validate the findings from this study.

The Clinical Comparison of Extensile Lateral Approach and Sinus Tarsi Approach Combined with Medial Distraction Technique for Intra-Articular Calcaneal Fractures

Category: Hindfoot Introduction/Purpose: To study and compare the clinical outcomes of open reduction and internal fixation via extensile L-shape incision and limited open reduction via sinus tarsi approach using medial distraction technique for intra-articular calcaneal fractures. Methods: We performed a retrospective review of 65 intra-articular calcaneal fractures treated operatively between March 2012 and February 2015, including 32 cases of Sanders type? and 33 of Sanders type?. There were 49 men and 16 women. The mean age was 43.7 years old. They were divided into two groups: sinus tarsi approach group and extensile lateral approach group. No significant difference was found in gender, age, injury pattern, fracture classification between two groups (P&gt;0.05). The Böhler angle, Gissane angle and calcaneal varus angle were measured before surgery, 1 week after surgery and at each follow-up visit respectively. The postoperative function was evaluated by the ankle and hind-foot score of American Orthopaedic Foot and Ankle Society (AOFAS) and visual analogue scale (VAS). Results: All of the fractures were healed at about 10 weeks postoperatively. Böhler angle, Gissane angle and calcaneal varus angle were restored obviously, while there was no significant statistically difference between the two groups. Only the corrected value of calcaneal varus angle is statistically significant.At the last follow-up, the average AOFAS ankle and hind-foot score of minimal group was 88.4±6.6, and the VAS score was 1.9±0.7, while of extensile lateral approach group was 83.2±5.6 and 2.3±1.0 respectively. Conclusion: Limited open reduction via sinus tarsi approach for intra-articular calcaneal fractures could reduce the incidence of wound complications effectively, and the medial distraction technique is helpful to correct the calcaneus varus deformity.

Infections in primary total ankle replacement: Anterior approach versus lateral transfibular approach

BackgroundTotal ankle replacement (TAR) represents an alternative to fusion for the treatment of end-stage ankle osteoarthritis. The aim of the present study was to retrospectively assess the frequency of infections between TARs with anterior and lateral transfibular approach at 12-months follow-up. Methods81 TARs through an anterior approach and 69 TARs through a lateral approach were performed between May 2011 and July 2015. We compared surgical time and tourniquet time, as well as superficial and deep infections frequency during the first 12 postoperative months. ResultsIn the anterior approach group, there were 3 (3.7%) deep infections and 4 (4.9%) superficial wound infections. In the lateral approach group, there were 1 (1.4%) deep infection and 2 superficial wound infections (2.9%). There were not statistically significant differences between the groups. There was a significant difference between anterior approach (115minutes) and lateral approach group (179minutes) in terms of surgical time (P<0.001). ConclusionsThe frequency of superficial and deep periprosthetic infections during the first postoperative year was not significantly different in the lateral approach group compared to the anterior approach group, despite the significantly longer surgical time in the lateral transfibular approach group.