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1.
Foot Ankle Spec ; 15(3): 221-235, 2022 Jun.
Article in English | MEDLINE | ID: mdl-32830562

ABSTRACT

BACKGROUND: Correction of talonavicular uncoverage (TNU) in adult-acquired flatfoot deformities (AAFD) can be a challenge. Lateral column lengthening (LCL) traditionally is utilized to address this. The primary study objective is examining stage II AAFD patients and determining if correction can be achieved with subtalar fusion (STF) comparable to LCL. METHODS: Following institutional review board approval, retrospective chart review performed identifying patients meeting criteria for stage IIB AAFD who underwent either STF with concomitant flatfoot procedures (but not LCL) to correct TNU, or who underwent LCL as part of their flatfoot reconstruction. Patients indicated for STF had one or more of the following: higher body mass index (BMI), were older, had greater deformity, lateral impingement pain, intraoperative spring ligament hyperlaxity. Patients without 1-year follow-up or compete records were excluded. All other patients were included. A total of 27 isolated STFs identified, along with 143 who underwent LCL. Pre-/postoperative radiographic parameters obtained as well as PROMIS (Patient-Reported Outcomes Measurement Information System) and FAOS (Foot and Ankle Outcome Score) scores. Radiographic and patient reported outcomes both preoperatively and at 1-year follow-up evaluated for both groups. RESULTS: STF patients were older (P < .05), with higher BMIs (P < .004). STF had significantly worse TNU (P < .001) than LCL patients, and average change in STF TNU was larger than LCL change postoperatively (P = .006), after adjusting for age, BMI, gender. PROMIS STF improvement reached statistical significance in Physical Function (P 0.011), for FAOS Pain (P 0.025) and Function (P = 0.04). CONCLUSIONS: STF can be used in appropriately indicated patients to correct flatfoot deformity without compromising radiographic or clinical, correcting not only hindfoot valgus, but also talonavicular uncoverage (TNU) and corresponding medial arch collapse. LEVELS OF EVIDENCE: Level III: Retrospective chart review comparison study (case control).


Subject(s)
Flatfoot , Foot Deformities, Acquired , Adult , Arthrodesis/methods , Flatfoot/diagnostic imaging , Flatfoot/surgery , Foot Deformities, Acquired/diagnostic imaging , Foot Deformities, Acquired/surgery , Humans , Pain , Retrospective Studies
2.
Foot Ankle Int ; 41(12): 1519-1528, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32791850

ABSTRACT

BACKGROUND: The Salto Talaris is a fixed-bearing implant first approved in the US in 2006. While early surgical outcomes have been promising, mid- to long-term survivorship data are limited. The aim of this study was to present the survivorship and causes of failure of the Salto Talaris implant, with functional and radiographic outcomes. METHODS: Eighty-seven prospectively followed patients who underwent total ankle arthroplasty with the Salto Talaris between 2007 and 2015 at our institution were retrospectively identified. Of these, 82 patients (85 ankles) had a minimum follow-up of 5 (mean, 7.1; range, 5-12) years. The mean age was 63.5 (range, 42-82) years and the mean body mass index was 28.1 (range, 17.9-41.2) kg/m2. Survivorship was determined by incidence of revision, defined as removal/exchange of a metal component. Preoperative, immediate, and minimum 5-year postoperative AP and lateral weightbearing radiographs were reviewed; tibiotalar alignment (TTA) and the medial distal tibial angle (MDTA) were measured to assess coronal talar and tibial alignment, respectively. The sagittal tibial angle (STA) was measured; the talar inclination angle (TIA) was measured to evaluate for radiographic subsidence of the implant, defined as a change in TIA of 5 degrees or more from the immediately to the latest postoperative lateral radiograph. The locations of periprosthetic cysts were documented. Preoperative and minimum 5-year postoperative Foot and Ankle Outcome Score (FAOS) subscales were compared. RESULTS: Survivorship was 97.6% with 2 revisions. One patient underwent tibial and talar component revision for varus malalignment of the ankle; another underwent talar component revision for aseptic loosening and subsidence. The rate of other reoperations was 21.2% (n = 18), with the main reoperation being exostectomy with debridement for ankle impingement (n = 12). At final follow-up, the average TTA improved 4.4 (± 3.8) degrees, the average MDTA improved 3.4 (± 2.6) degrees, and the average STA improved 5.3 (± 4.5) degrees. Periprosthetic cysts were observed in 18 patients, and there was no radiographic subsidence. All FAOS subscales demonstrated significant improvement at final follow-up. CONCLUSIONS: We found the Salto Talaris implant to be durable, consistent with previous studies of shorter follow-up lengths. We observed significant improvement in radiographic alignment as well as patient-reported clinical outcomes at a minimum 5-year follow-up. LEVEL OF EVIDENCE: Level IV, retrospective case series.


Subject(s)
Arthroplasty, Replacement, Ankle/instrumentation , Joint Prosthesis , Prosthesis Design , Prosthesis Failure , Reoperation/statistics & numerical data , Adult , Aged , Aged, 80 and over , Arthritis, Rheumatoid/diagnostic imaging , Arthritis, Rheumatoid/surgery , Female , Humans , Male , Middle Aged , Osteoarthritis/diagnostic imaging , Osteoarthritis/surgery , Prospective Studies , Retrospective Studies , Surveys and Questionnaires
3.
Foot Ankle Int ; 41(9): 1056-1064, 2020 Sep.
Article in English | MEDLINE | ID: mdl-32646235

ABSTRACT

BACKGROUND: Hallux rigidus is a common arthritic condition that has been addressed surgically with a range of techniques, from an isolated cheilectomy to first metatarsophalangeal (MTP) joint fusion. Recently, hemiarthroplasty with polyvinyl alcohol (PVA) hydrogel implant has been used as an alternative treatment to relieve pain while preserving motion of the first MTP joint. We retrospectively reviewed patient-reported outcome scores and clinical outcomes for patients treated for hallux rigidus with PVA hydrogel implant at an academic, multisurgeon center. METHODS: A total of 103 patients who underwent first MTP hemiarthroplasty with PVA hydrogel implant between January 2017 and October 2018 were retrospectively reviewed (average, 26.2 months). Eight surgeons were represented. Baseline Patient-Reported Outcomes Measurement Information System (PROMIS) scores for the Physical Function, Pain Interference, Pain Intensity, Global Physical Health, Global Mental Health, and Depression domains were collected prospectively and compared with PROMIS scores collected at a minimum of 1 year postoperatively (average, 13.9 months). Seventy-three patients had both preoperative and postoperative scores. Ten of these patients had undergone a prior procedure of the first MTP, and 52 underwent concurrent Moberg osteotomy at the time of PVA hydrogel implantation. RESULTS: For patients with baseline and postoperative PROMIS scores, significant pre- to postoperative improvement was detected for the Physical Function, Pain Interference, Pain Intensity, and Global Physical Health domains (P < .05). Patients who had undergone a prior procedure of the first MTP had significantly higher postoperative Pain Intensity scores compared with those who did not undergo a prior procedure. Patients undergoing concurrent Moberg osteotomy had significantly lower postoperative Pain Interference and Pain Intensity scores compared with those who did not undergo a Moberg. Two patients underwent revision procedures in the first 2 years postoperatively, one with revision hemiarthroplasty and one with conversion to arthrodesis. CONCLUSION: On average across our entire cohort, physical function and pain scores improved significantly pre- to postoperatively; however, postoperative pain scores were significantly higher for patients who had undergone a prior procedure of the first MTP and significantly lower for patients who underwent concurrent Moberg osteotomy. The implant displayed excellent survivorship in the first 2 years postoperatively, with only 2 revision procedures. LEVEL OF EVIDENCE: Level III, comparative series.


Subject(s)
Hallux Rigidus/surgery , Hemiarthroplasty/methods , Polyvinyl Alcohol/therapeutic use , Prostheses and Implants , Prosthesis Design , Adult , Aged , Female , Humans , Male , Middle Aged , Patient Reported Outcome Measures , Retrospective Studies
4.
Foot Ankle Int ; 41(8): 930-936, 2020 08.
Article in English | MEDLINE | ID: mdl-32506953

ABSTRACT

BACKGROUND: Assessment of operative correction of adult-acquired flatfoot deformity (AAFD) has been traditionally performed by clinical evaluation and conventional radiographic imaging. Previously, a 3-dimensional biometric weightbearing computed tomography (WBCT) tool, the foot ankle offset (FAO), has been developed and validated in assessing hindfoot alignment. The purpose of this study was to investigate the role of FAO in evaluating operative deformity correction in AAFD. METHODS: In this prospective comparative study, 19 adult patients (20 feet) with stage II (flexible) flatfoot deformity underwent preoperative and postoperative standing WBCT examination at mean 19 months (range, 6-24) after surgery. Three-dimensional coordinates of the foot tripod and center of the ankle joint were acquired by 2 independent and blinded observers. These coordinates were used to calculate the FAO using dedicated software, and subsequently compared pre- and postoperatively. The FAO is a previously validated biometric measurement that represents centering of the foot tripod as well as hindfoot alignment, with a normal mean FAO of 2.3% ± 2.9%. In addition, Patient Reported Outcomes Measurement Information System (PROMIS) clinical outcomes scores were compared pre- and postoperatively with a mean follow-up of 22.6 months (range, 14-37). RESULTS: There was significant correction of flatfoot deformity from a mean preoperative FAO of 9.8% to a mean postoperative value of 1.3% (P < .001). Additionally, there was statistically significant improvement in all PROMIS domains (P < .05), except depression, at an average follow-up of 22.6 months. Spring ligament reconstruction was the only procedure associated with a significant correction in FAO (P = .0064). CONCLUSION: The FAO was a reliable and sensitive tool that was used to evaluate preoperative deformity as well as postoperative correction, with patients demonstrating both significant improvement in FAO as well as patient-reported outcomes. These findings demonstrate the role for biometric 3-dimensional WBCT imaging in assessing operative correction after flatfoot reconstruction, as well as the potential role for operative planning to address preoperative deformity. LEVEL OF EVIDENCE: Level II, prospective comparative study.


Subject(s)
Flatfoot/surgery , Imaging, Three-Dimensional , Tomography, X-Ray Computed/methods , Adult , Aged , Aged, 80 and over , Biometry , Body Mass Index , Female , Flatfoot/diagnostic imaging , Foot Deformities, Acquired/diagnostic imaging , Foot Deformities, Acquired/surgery , Humans , Linear Models , Male , Middle Aged , Prospective Studies
5.
Foot Ankle Int ; 41(7): 839-848, 2020 07.
Article in English | MEDLINE | ID: mdl-32441540

ABSTRACT

BACKGROUND: Semiautomatic 3-dimensional (3D) biometric weightbearing computed tomography (WBCT) tools have been shown to adequately demonstrate the relationship between the center of the ankle joint and the tripod of the foot. The measurement of the foot and ankle offset (FAO) represents an optimized biomechanical assessment of foot alignment. The objective of this study was to evaluate the correlation between FAO and traditional adult acquired flatfoot deformity (AAFD) markers, measured in different planes. We hypothesized that the FAO would significantly correlate with other radiographic markers of pronounced AAFD. METHODS: In this retrospective comparative study, we included 113 patients with stage II AAFD, 43 men and 70 women, mean age of 53.5 (range, 20-86) years. 3D coordinates (x, y, and z planes) of the foot tripod (most plantar voxel of the first and fifth metatarsal heads, and calcaneal tuberosity) and the center of the ankle joint (most proximal and central voxel of the talar dome) were assessed by 2 blinded and independent fellowship-trained orthopedic foot and ankle surgeons. The FAO was automatically calculated using the 3D coordinates by dedicated software. Multiple WBCT parameters related to the severity of the deformity in the coronal, sagittal, and transverse planes were manually measured. RESULTS: We found overall good to excellent intra- (range, 0.75-0.99) and interobserver (range, 0.73-0.99) reliability for manual AAFD measurements. FAO semiautomatic measurements demonstrated excellent intra- (0.99) and interobserver (0.99) reliabilities. Hindfoot moment arm (HMA) (P < .00001), subtalar horizontal angle (P < .00001), talonavicular coverage angle (P = .00004), and forefoot arch angle (P = .0001) were the only variables found to significantly influence and correlate with FAO measurements, with an R2 value of 0.79. An HMA value of 19.8 mm was found to be a strong threshold predictor of increased values of FAO, with mean values of FAO of 6.5 when the HMA was lower than 19.8 mm and 14.6 when the HMA was equal to or higher than 19.8 mm. CONCLUSION: We found that 3D WBCT semiautomatic measurements of FAO significantly correlated with some traditional markers of pronounced AAFD. Measurements of FAO were also found to be slightly more reliable than the manual measurements. The FAO offers a simple and more complete biomechanical and multiplanar assessment of the AAFD, representing in a single measurement the 3D components of the deformity. LEVEL OF EVIDENCE: Level III, retrospective comparative study.


Subject(s)
Flatfoot/diagnostic imaging , Flatfoot/physiopathology , Tomography, X-Ray Computed , Weight-Bearing/physiology , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Reproducibility of Results , Retrospective Studies , Young Adult
6.
Foot Ankle Orthop ; 5(2): 2473011420917325, 2020 Apr.
Article in English | MEDLINE | ID: mdl-35097375

ABSTRACT

BACKGROUND: The posteromedial ankle structures are at risk during total ankle replacement (TAR). The purpose of our study was to investigate the distance of these structures from the posterior cortex of the tibia and talus in order to determine their anatomy at different levels of bone resection during a TAR and whether plantarflexion of the ankle reliably moved these structures posteriorly. METHODS: Ten feet in 10 patients with end-stage tibiotalar arthritis indicated for a TAR were included. Preoperative magnetic resonance images were obtained with the foot in a neutral position as well as in maximum plantarflexion to measure the distance of posteromedial ankle structures to the closest part of the posterior cortex of the tibia or talus. Wilcoxon signed-rank rests were used to investigate differences in these distances. RESULTS: The mean distance from the posterior tibial cortex to the tibial nerve at 14 and 7 mm above the tibial plafond was 8.7 mm (range 5.0-11.8 mm) and 6.7 mm (range 2.7-10.6 mm), respectively, which represented a statistically significant movement anteriorly (P = .021). The posterior tibial artery was, on average, 8.0 mm (range 3.6-13.9 mm) and 7.2 mm (range 3.1-9.4 mm) from the posterior tibial cortex at 14 and 7 mm above the tibial plafond, respectively. Distal to the tibial plafond, the posterior tibial artery and flexor digitorum longus tendons moved posteriorly by less than 1 mm in plantarflexion (all P < .05); otherwise, plantarflexion of the ankle did not affect the position of the tibial nerve, posterior tibial tendon, or flexor hallucis longus. CONCLUSION: In patients with end-stage ankle arthritis, the tibial nerve and posterior tibial artery lie, on average, between 6.5 and 10 mm from the posterior tibial and talar cortices. Plantarflexion of the ankle did not reliably move the posteromedial ankle structures posteriorly. LEVEL OF EVIDENCE: Level IV, case series, therapeutic.

7.
Foot Ankle Orthop ; 5(3): 2473011420940221, 2020 Jul.
Article in English | MEDLINE | ID: mdl-35097399

ABSTRACT

BACKGROUND: Active participation in patients' own care is essential for success after Lapidus procedure. Poor health literacy, comprehension, and retention of patient instructions may be correlated with patient participation. Currently, there is no objective measure of how well patients internalize and retain instructions before and after a Lapidus procedure. We performed this study to assess how much of the information given to patients preoperatively was able to be recalled at the first postoperative visit. METHODS: All patients between ages 18 and 88 years undergoing a Lapidus procedure for hallux valgus by the senior author between June 2016 and July 2018 were considered eligible for inclusion. Patients were excluded if they had a history of previous bunion surgery or if the procedure was part of a flatfoot reconstruction. Patients were given written and verbal instructions at the preoperative visit. Demographic and comprehension surveys were administered at their first visit approximately 2 weeks postoperatively. A total of 50 patients, of which 42 (84%) were female and 43 (86%) had a bachelor's degree or higher, were enrolled. RESULTS: Mean overall score on the comprehension survey was 6.2/8 (±1.2), mean procedure subscore was 1.8/3 (±0.64), and mean postoperative protocol subscore was 4.4/5 (±0.8). The most frequently missed question asked patients to identify the joint fused in the procedure. CONCLUSION: Although comprehension and retention of instructions given preoperatively was quite high in our well-educated cohort, our findings highlight the importance of delivering clear instructions preoperatively and reinforcing these instructions often. LEVEL OF EVIDENCE: Level II, prospective cohort study.

8.
J Intensive Care Med ; 35(9): 869-874, 2020 Sep.
Article in English | MEDLINE | ID: mdl-30231668

ABSTRACT

BACKGROUND: Central venous catheter (CVC) complication rates reflecting the application of modern insertion techniques to a clinically heterogeneous patient populations are needed to better understand procedural risk attributable to the 3 common anatomic insertion sites: internal jugular, subclavian, and femoral veins. We sought to define site-specific mechanical and duration-associated CVC complication rates across all hospital inpatients. METHODS: A retrospective chart review was conducted over 9 months at Georgetown University Hospital and Washington Hospital Center. Peripherally inserted central catheters and tunneled or fluoroscopically placed CVC's were excluded. Mechanical complications (retained guidewire, arterial injury, and pneumothorax) and duration-associated complications (deep vein thrombosis or pulmonary embolism, and central line-associated bloodstream infections) were identified. RESULTS: In all, 1179 CVC insertions in 801 adult patients were analyzed. Approximately 32% of patients had multiple lines placed. Of 1179 CVCs, 73 total complications were recorded, giving a total rate of one or more complications occurring per CVC of 5.9%. There was no statistically significant difference between site-specific complications. A total of 19 mechanical complications were documented, with a 1.5% complication rate of one or more mechanical complications occurring. A total of 54 delayed complications were documented, with a 4.4% complication rate of 1 or more delayed complications occurring. There were no statistically significant differences between anatomic sites for either total mechanical or total delayed complications. CONCLUSIONS: These results suggest that site-specific CVC complication rates may be less common than previously reported. These data further inform on the safety of modern CVC insertion techniques across all patient populations and clinical settings.


Subject(s)
Catheterization, Central Venous/adverse effects , Central Venous Catheters/adverse effects , Femoral Vein/injuries , Jugular Veins/injuries , Subclavian Vein/injuries , Vascular System Injuries/epidemiology , Aged , Critical Care Outcomes , District of Columbia/epidemiology , Female , Humans , Male , Middle Aged , Outcome Assessment, Health Care , Retrospective Studies , Vascular System Injuries/etiology
9.
Adv Skin Wound Care ; 33(1): 43-46, 2020 Jan.
Article in English | MEDLINE | ID: mdl-31856030

ABSTRACT

OBJECTIVE: To determine what factors increase the risk of early wound complications in patients undergoing direct anterior total hip arthroplasty whose wounds were closed with 2-octyl cyanoacrylate with mesh. METHODS: This study was a retrospective review of 75 consecutive patients who underwent direct anterior total hip arthroplasty closed with 2-octyl cyanoacrylate with mesh. MAIN RESULTS: Of 29 patients who were smokers, five patients (17.2%) developed a wound complication, whereas out of 46 nonsmokers, only one patient (2.2%) developed a wound complication (P = .029). CONCLUSIONS: The authors recommend a closure technique that sufficiently protects the wound during healing, as well as preoperative patient optimization and smoking cessation.


Subject(s)
Arthroplasty, Replacement, Hip/adverse effects , Smoking/adverse effects , Surgical Mesh , Surgical Wound Infection/epidemiology , Wound Closure Techniques , Aged , Arthroplasty, Replacement, Hip/methods , Cephalosporins/therapeutic use , Cohort Studies , Cyanoacrylates/pharmacology , Female , Follow-Up Studies , Humans , Incidence , Male , Middle Aged , Reference Values , Registries , Retrospective Studies , Risk Assessment , Surgical Wound Infection/diagnosis , Surgical Wound Infection/drug therapy , Wound Healing/physiology
10.
Foot Ankle Int ; 41(2): 125-132, 2020 02.
Article in English | MEDLINE | ID: mdl-31617413

ABSTRACT

BACKGROUND: Hallux valgus (HV) is a triplanar deformity of the first ray including pronation of the first metatarsal with subluxation of the sesamoids. The purpose of this study was to investigate if a first tarsometatarsal fusion (modified Lapidus technique), without preoperative knowledge of pronation measured on weightbearing computed tomographic (CT) scans, changed pronation of the first metatarsal and determine if reduction of the sesamoids was correlated with changes in first metatarsal pronation. METHODS: Thirty-one feet in 31 patients with HV who underwent a modified Lapidus procedure had preoperative and at least 5-month postoperative weightbearing CT scans and radiographs. Differences in preoperative and postoperative pronation of the first metatarsal using a 3-dimensional computer-aided design, HV angle, and intermetatarsal angle (IMA) were calculated using Wilcoxon signed-rank tests. After dividing patients into groups based on sesamoid station, Kruskal-Wallis H tests were used to compare first metatarsal pronation between the groups. RESULTS: The mean preoperative and postoperative pronation of the first metatarsal was 29.0 degrees (range 15.8-51.1, SD 8.7) and 20.2 degrees (range 10.4-32.6, SD 5.4), respectively, which was a mean change in pronation of the first ray of -8.8 degrees (P < .001). There was no difference in pronation of the first ray when stratified by postoperative sesamoid position (P > .250). The average preoperative and postoperative IMA was 16.7 degrees (SD 3.2) and 8.8 degrees (SD 2.8), which demonstrated a significant change (P < .001). CONCLUSIONS: The modified Lapidus procedure was an effective tool to change pronation of the first ray. Reduction of the sesamoids was not associated with postoperative first metatarsal pronation. LEVEL OF EVIDENCE: Level IV, case series.


Subject(s)
Arthrodesis/methods , Hallux Valgus/physiopathology , Hallux Valgus/surgery , Metatarsal Bones/physiopathology , Metatarsal Bones/surgery , Osteotomy/methods , Pronation , Adult , Aged , Female , Hallux Valgus/diagnostic imaging , Humans , Imaging, Three-Dimensional , Male , Metatarsal Bones/diagnostic imaging , Middle Aged , Range of Motion, Articular , Retrospective Studies , Weight-Bearing
11.
Orthop Clin North Am ; 51(1): 109-120, 2020 Jan.
Article in English | MEDLINE | ID: mdl-31739874

ABSTRACT

Reconstruction of the flexible adult-acquired flatfoot deformity (AAFD) is controversial, and numerous procedures are frequently used in combination, including flexor digitorum longus transfer, medializing calcaneal osteotomy (MCO), heel cord lengthening/gastrocnemius recession, lateral column lengthening (LCL), Cotton osteotomy or first tarsometatarsal fusion, and spring ligament reconstruction. This article summarizes recent studies demonstrating that patients have significant improvements after operative treatment of flexible AAFD. It reviews current literature on clinical and radiographic outcomes of the MCO, LCL, and Cotton osteotomies. The authors describe how this information can be used in surgical decision making in order to tailor operative treatment to an individual patient's deformity.


Subject(s)
Flatfoot/surgery , Foot/surgery , Plastic Surgery Procedures/methods , Tendon Transfer/methods , Adult , Arthrodesis/methods , Calcaneus/surgery , Combined Modality Therapy/methods , Decision Making/ethics , Female , Flatfoot/diagnostic imaging , Flatfoot/pathology , Foot/diagnostic imaging , Foot/pathology , Humans , Ligaments, Articular/surgery , Male , Osteotomy/methods , Patient Reported Outcome Measures , Radiography , Retrospective Studies , Treatment Outcome
12.
J Orthop ; 17: 22-24, 2020.
Article in English | MEDLINE | ID: mdl-31879468

ABSTRACT

OBJECTIVE: Investigating patients' perceptions regarding need for antibiotic prophylaxis during dental procedures after undergoing joint arthroplasty. METHODS: Questionnaire was administered to patients presenting at: 1)an orthopaedic office; 2)a dental office; regarding perceptions of antibiotic prophylaxis. RESULTS: 36 orthopaedic patients responded "Yes" to always taking prophylaxis; 36 patients responded "No" (36/72, 50.0% compliance). Five dental patients responded "Yes" to always taking prophylaxis; 19 patients responded "No" (5/24, 20.8% compliance) (p = 0.017). 67/135 orthopaedic patients (49.6%) endorsed some form of dental prophylaxis, versus 34/58 dental patients (58.6%) (p = 0.27). CONCLUSION: Patient perceptions of the need for dental prophylaxis vary within orthopaedic and dental practices.

13.
Foot Ankle Int ; 40(12): 1351-1357, 2019 Dec.
Article in English | MEDLINE | ID: mdl-31597454

ABSTRACT

BACKGROUND: Total ankle arthroplasty (TAA) continues to exhibit a relatively high incidence of complications and need for revision surgery compared to knee and hip arthroplasty. One common mode of failure in TAA is talar component subsidence. This may be caused by disruption in the talar blood supply related to the operative technique. The purpose of this study was to quantify changes in talar bone perfusion and turnover before and after TAA with the INBONE II system using 18F-fluoride positron emission tomography / computed tomography (PET/CT). METHODS: Nine subjects (5 M/4 F) aged 68.9 ± 8.2 years were enrolled for 18F-fluoride PET/CT imaging before and 3 months after TAA. Regions of interest (ROI) were placed on the postoperative CT images in the body of the talus beneath the talar component and overlaid on the fused static PET images. Standard uptake values (SUVs) along with dynamic K1 (bone blood flow) and ki (bone metabolism or osteoblastic turnover) were calculated. RESULTS: The SUV underneath the talar component compared to that measured at baseline before surgery was 1.93 ± 0.29 preoperatively vs 2.47 ± 0.37 postoperatively (P > .05). K1 was 0.84 ± 0.16 mL/min/mL preoperatively vs 1.51 ± 0.23 mL/min/mL postoperatively (P = .026). ki was constant at 0.09 ± 0.03 mL/min/mL preoperatively vs 0.12 ± 0.03 mL/min/mL postoperatively (P > .05). CONCLUSION: Our study was the first to link 18F-fluoride PET/CT with pre-post evaluation of total ankle replacements. The study quantified perfusion within the talus beneath the TAA implant supporting the hypothesis that perfusion of the talus remained intact after surgery. LEVEL OF EVIDENCE: Level II, prospective cohort study with development of diagnostic criteria.


Subject(s)
Arthroplasty, Replacement, Ankle , Positron Emission Tomography Computed Tomography , Talus/diagnostic imaging , Talus/surgery , Aged , Aged, 80 and over , Female , Fluorine Radioisotopes/chemistry , Humans , Male , Middle Aged , Osteoblasts/cytology , Prospective Studies , Tomography, X-Ray Computed
14.
Orthopedics ; 42(3): e346-e349, 2019 May 01.
Article in English | MEDLINE | ID: mdl-30913298

ABSTRACT

Templating for total hip arthroplasty requires proper radiographic calibration. One option for radiograph calibration is using a cobalt-chrome femoral head ball. The authors reviewed radiographs and clinical data for patients undergoing primary total hip arthroplasty. Radiographs were calibrated using a 28-mm cobalt-chrome femoral head ball. Agreements between templated and actual implant size were calculated. The templated acetabulum matched within one size of the actual acetabulum in 76.7% to 80.0% of cases. The templated femur matched within one size of the actual femur in 83.3% to 93.3% of cases. This technique is an attractive option when a standardized calibration marker is unavailable. [Orthopedics. 2019; 42(3):e346-e349.].


Subject(s)
Femur Head/diagnostic imaging , Hip Joint/diagnostic imaging , Hip Prosthesis , Radiographic Image Interpretation, Computer-Assisted , Adult , Aged , Arthroplasty, Replacement, Hip , Calibration , Female , Hip Joint/surgery , Humans , Male , Middle Aged , Preoperative Care , Retrospective Studies , Software
15.
J Orthop ; 16(2): 109-112, 2019.
Article in English | MEDLINE | ID: mdl-30723360

ABSTRACT

OBJECTIVE: To investigate patient factors influencing length-of-stay (LOS) after revision metal-on-metal (MoM) total hip arthroplasty (THA). METHODS: We reviewed 23 hips undergoing revision of a MoM THA with minimum 2-year follow-up. A multiple linear regression was calculated to predict LOS using multiple variables. RESULTS: Average length of stay (LOS) was 2.1 days. Multiple linear regression analysis identified a significant correlation between presence of an abductor injury (beta = 0.8886; p < 0.0001), patient age (beta = -0.4452, p = 0.0083), and pre-revision head size (beta = 0.4082; p = 0.0172) with LOS (R2 = 0.6351, p = 0.0002). CONCLUSION: Patients with abductor injury, larger femoral heads, and younger age are at risk for longer LOS.

16.
Foot Ankle Int ; 40(5): 491-498, 2019 May.
Article in English | MEDLINE | ID: mdl-30654660

ABSTRACT

BACKGROUND: Residual supination of the midfoot during reconstruction of the stage II adult-acquired flatfoot deformity (AAFD) is often addressed with a medial cuneiform (Cotton) osteotomy after adequate correction of the hindfoot valgus deformity. The purpose of this study was to determine if there was a correlation between postoperative alignment of the medial cuneiform and patient-reported outcomes. METHODS: Sixty-three feet in 61 patients with stage II AAFD who underwent a Cotton osteotomy as part of a flatfoot reconstruction were included in the study. Radiographic angles were measured on weightbearing lateral radiographs at a minimum of 40 weeks postoperatively. Pearson's correlation analysis was used to determine if there was an association between postoperative radiographic angles and Foot and Ankle Outcome Score (FAOS) at a minimum of 24 months postoperatively. Patients were also divided into mild plantarflexion (cuneiform articular angle [CAA] ≥-2 degrees) and moderate plantarflexion (CAA <-2 degrees) groups to evaluate for differences in clinical outcomes. RESULTS: Postoperative CAA was significantly positively correlated with the postoperative FAOS symptoms ( r = .27, P = .03), daily activities ( r = .29, P = .02), sports activities ( r = .26, P = .048), and quality of life ( r = .28, P = .02) subscales. Patients in the mild plantarflexion group had statistically and clinically better outcomes compared with the moderate plantarflexion group in the FAOS symptoms ( P = .04), daily activities ( P = .04), and sports activities ( P = .01) subscales. CONCLUSIONS: Our study suggests that the surgeon should avoid excessive plantarflexion of the medial cuneiform and use the Cotton osteotomy judiciously as part of a flatfoot reconstruction for stage II AAFD. LEVEL OF EVIDENCE: Level III, comparative series.


Subject(s)
Flatfoot/surgery , Foot Deformities, Acquired/surgery , Osteotomy , Patient Reported Outcome Measures , Tarsal Bones/surgery , Adult , Aged , Aged, 80 and over , Female , Flatfoot/diagnostic imaging , Foot Deformities, Acquired/diagnostic imaging , Humans , Male , Middle Aged , Radiography , Tarsal Bones/diagnostic imaging , Tarsal Bones/physiopathology , Young Adult
17.
J Arthroplasty ; 33(2): 533-536, 2018 02.
Article in English | MEDLINE | ID: mdl-28947374

ABSTRACT

BACKGROUND: Factor-Xa inhibitors have been introduced for prevention of venous thromboembolism (VTE) after joint arthroplasty. However, these agents could also be associated with bleeding or wound complications after surgery. METHODS: We retrospectively reviewed a consecutive series of 59 patients (31 knees, 28 hips) undergoing joint arthroplasty at a high-volume joint arthroplasty referral center, both before and after implementation of a new VTE risk-stratification tool at our institution. Patients with a history of VTE, bilateral procedures, or medical conditions already requiring VTE chemoprophylaxis were excluded. We reviewed the medical records to determine (1) type of VTE prophylaxis used, (2) incidence of bleeding/wound complications in the postoperative period, (3) incidence of VTE in the postoperative period, and (4) change in serum hemoglobin. RESULTS: Twenty-seven patients (46%) were given aspirin for VTE prophylaxis, while 32 patients (54%) received a factor-Xa inhibitor. There were no new VTE complications in either group. And 6 of 32 patients (18.7%) in the Xa inhibitor group had a postoperative bleeding/wound complication (4 delayed healing/blistering, 1 hematoma/excessive ecchymosis, and 1 readmission for cellulitis). There were no (0%) bleeding/wound complications in the aspirin group (P = .03). The change in hemoglobin level was -2.76 g/dL in patients receiving aspirin vs -2.84 g/dL in patients receiving a Xa inhibitor (P = .73). CONCLUSION: In our study of total joint patients, factor-Xa inhibitors were associated with a higher incidence of bleeding/wound complications. The choice of VTE prophylaxis should be based on the perceived risks of bleeding and wound complications compared to the risks of VTE in each patient.


Subject(s)
Anticoagulants/adverse effects , Arthroplasty, Replacement/adverse effects , Factor Xa Inhibitors/adverse effects , Postoperative Complications/epidemiology , Adult , Aged , Aged, 80 and over , Anticoagulants/therapeutic use , Aspirin/adverse effects , Aspirin/therapeutic use , Chemoprevention , Electronic Health Records , Factor Xa Inhibitors/therapeutic use , Female , Humans , Incidence , Male , Middle Aged , Postoperative Complications/etiology , Postoperative Hemorrhage/etiology , Postoperative Period , Registries , Retrospective Studies , Venous Thromboembolism/epidemiology , Venous Thromboembolism/etiology
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