Excessive glenoid retroversion and posterior wear leads to technical challenges when performing anatomic shoulder replacement. Various techniques have been described to correct glenoid version, including eccentric reaming, bone graft, posterior augmentation and custom prosthesis. Clinical outcomes and survivorship of a Stemless humeral component with cemented pegged polyethylene glenoid with eccentric reaming to partially correct retroversion are presented. Between 2010– 2019, 115 Mathys Affinis Stemless Shoulder Replacements were performed. 50 patients with significant posterior wear and retroversion (Walch type B1, B2, B3 and C) were identified. Measurement of Pre-operative glenoid retroversion and Glenoid component version on a post op axillary view was performed by method as described by Matsen FA. Relative correction was correlated with clinical and radiological outcome.Abstract
Aim
Patients and Methods
Although readmission has historically been of primary interest, emergency department (ED) visits are increasingly a point of focus and can serve as a potentially unnecessary gateway to readmission. This study aims to analyze the difference between primary and revision total joint arthroplasty (TJA) cases in terms of the rate and reasons associated with 90-day ED visits. We retrospectively reviewed all patients who underwent TJA from 2011 to 2021 at a single, large, tertiary urban institution. Patients were separated into two cohorts based on whether they underwent primary or revision TJA (rTJA). Outcomes of interest included ED visit within 90-days of surgery, as well as reasons for ED visit and readmission rate. Multivariable logistic regressions were performed to compare the two groups while accounting for all statistically significant demographic variables.Aims
Methods
The Forgotten Joint Score-12 (FJS-12) is a validated patient-reported outcome measure (PROM) tool designed to assess artificial prosthesis awareness during daily activities following total hip arthroplasty (THA). The patient-acceptable symptom state (PASS) is the minimum cut-off value that corresponds to a patient’s satisfactory state-of-health. Despite the validity and reliability of the FJS-12 having been previously demonstrated, the PASS has yet to be clearly defined. This study aims to define the PASS of the FJS-12 following primary THA. We retrospectively reviewed all patients who underwent primary elective THA from 2019 to 2020, and answered both the FJS-12 and the Hip Disability and Osteoarthritis Outcome Score, Joint Replacement (HOOS, JR) questionnaires one-year postoperatively. HOOS, JR score was used as the anchor to estimate the PASS of FJS-12. Two statistical methods were employed: the receiver operating characteristic (ROC) curve point, which maximized the Youden index; and 75th percentile of the cumulative percentage curve of patients who had the HOOS, JR score difference larger than the cut-off value.Aims
Methods
There is debate regarding whether the use of computer-assisted technology, such as navigation and robotics, has any benefit on clinical or patient reported outcomes following total knee arthroplasty (TKA). This study aims to report on the association between intraoperative use of technology and outcomes in patients who underwent primary TKA. We retrospectively reviewed 7,096 patients who underwent primary TKA from 2016–2020. Patients were stratified depending on the technology utilized intraoperatively: navigation, robotics, or no technology. Patient demographics, clinical data, Forgotten Joint Score-12 (FJS), and Knee injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS, JR) were collected at various time points up to 1-year follow-up. Demographic differences were assessed with chi-square and ANOVA tests. Clinical data and mean FJS and KOOS, JR scores were compared using univariate ANCOVA, controlling for demographic differences.Introduction
Methods
The use of technology, such as navigation and robotic systems, may improve the accuracy of component positioning in total hip arthroplasty (THA) but its impact on patient reported outcomes measures (PROMs) remains unclear. This study aims to identify the association between intraoperative use of technology and patient reported outcomes measures (PROMs) in patients who underwent primary total hip arthroplasty (THA). We retrospectively reviewed patients who underwent primary THA between 2016 and 2020 and answered a post-operative PROM questionnaire. Patients were separated into three groups depending on the technology utilized intraoperatively: navigation, robotics, or no technology (i.e. manual THA. The Forgotten Joint Score (FJS-12) and Hip Disability and Osteoarthritis Outcome Score, Joint Replacement (HOOS, JR) were collected at various time points (FJS: 3m, 1y, and 2y; HOOS, JR: pre-operatively, 3m, and 1y). Demographic differences were assessed with chi-square and ANOVA. Mean scores between all groups were compared using univariate ANCOVA, controlling for observed demographic differences.Introduction
Methods
Aim was to compare the functional outcome of anterior cervical decompression and fusion (ACDF) with stand-alone tricotical iliac crest auto graft verses stand-alone PEEK cage. Prospectively collected data of 60 patients in each group was compared.Introduction
Material and methods
The intra-operative diagnosis of Prosthetic Joint Infection (PJI) is a dilemma requiring intra-operative sampling of suspicious tissues for frozen section, deep tissue culture and histopathology to secure a diagnosis. Alfa defensin-1 testing has been introduced as a quick and reliable test for confirming or ruling out PJI. This study aims to assess its intra-operative reliability compared to the standard tests. Twenty patients who underwent revision hip and knee arthroplasty surgery were included. Patients joint aspirate was tested intra-operatively with the Synovasure kit, which takes approximately ten minutes for a result. Our standard protocol of collecting 5 deep tissue samples for culture and one sample for histopathology was followed. Results for Alfa defensin-1 test were then compared with final culture and histopathology results in all these patients.Introduction
Methods
Aim was to compare the functional outcome of anterior cervical decompression and fusion (ACDF) with stand-alone tricotical iliac crest auto graft verses stand-alone PEEK cage. Prospectively collected data of 60 patients in each group was compared.Introduction
Material and methods
Total Knee Arthroplasty (TKA) in obese patients has been under rigorous scrutiny due concerns of less satisfying results and increased risk of perioperative complications. We conducted a prospective study to observe functional scores between obese and non obese patients at two years after mini-robot computer assisted TKA. Average stay, time for wound to be dry and perioperative complications were also compared. A prospective study was conducted between February 2007 and February 2008 involving 50 patients. Two different groups of 25 each were made on the basis of body mass index (BMI). Oxford and Knee society scores were obtained at two years to observe difference in functional scores between these groups. Rate of post operative complications or hospital stay was comparable between the two groups. Oxford and Knee society scores improved significantly in both the groups postoperatively. Obese patients had better Oxford and Knee society scores, which were not statistically significant. There is no difference in early functional outcome and complications between obese and non obese patients after navigated TKA. Navigated TKA in obese patients help precise component placement with appropriate soft tissue balancing leading to improved results.
Computer navigated Total Knee Arthroplasty is routinely performed with gratifying results. New navigation software is now designed to help surgeons balance soft tissues in Total Knee Arthroplasty (TKA). The aim of our study was to compare functional scores at two years between two different techniques of knee balancing. A prospective randomized control study was conducted between February 2007 and February 2008 involving 52 patients. Two different techniques of knee balancing were used namely, measured resection and gap balancing technique. Each group had 26 patients. Oxford and Knee society scores were done at two years to understand if one technique was better than other. Oxford and Knee Society Scores improved significantly in both the groups but gap balancing technique achieved slightly better functional scores which were not significant on statistical analysis. Computer assisted measured resection and gap balancing techniques in TKA reliably improves functional scores postoperatively. Either of the techniques if performed correctly with appropriate patient selection will have satisfactory outcomes.
Single-photon emission computed tomography is a new imaging modality combining high detail CT with highly sensitive triple phase nuclear bone scanning to help clinicians in diagnosis and management of various conditions. Little has been published about its particular usefulness in foot and ankle pathology. We conducted a prospective study to evaluate the role of SPECT for the same. Fifty patients were seen in a tertiary referral foot and ankle clinic presenting with a variety of foot and ankle conditions. SPECT-CT was requested when a definitive clinical diagnosis could not be reached after thorough clinical examination and plain radiography. Pathology shown by SPECT-CT was taken as the final diagnosis and interventional surgical management carried out accordingly. Patients were subsequently seen in the follow up clinic to evaluate the outcome of their treatment.Aim
Material and Methods
Forefoot surgery causes postoperative pain which requires strong painkillers. Regional blocks are now increasingly used in order to control postoperative pain especially in the first twenty four hours when the pain is at its worst. We conducted a study to see whether timing of ankle block i.e. before or after application of tourniquet shows any difference in efficacy in postoperative analgesia in first twenty four hours. A prospective study was conducted between September and March 2011 involving 50 patients. Group A had ankle block after and Group B had block before application of tourniquet. Both group had twenty five patients each. Patients were given assessment forms to chart their pain on Visual Analogue Scale (VAS) at 4hrs and twenty four hours after surgery. Both groups demonstrated good postoperative pain control. Average pain score at four and twenty fours after surgery was 2.5 and 5 in Group A and 3.5 and 6.1 in Group B respectively. Pain control, both at four and twenty four hours surgery was better in Group A but this was not statistically significant. Ankle block should be routinely used in forefoot surgery to control postoperative pain. Ankle block before or after the application of tourniquet had comparable pain relief with no statistical difference.
Sterile Surgical Helmet System (SSHS) are used routinely in hip and knee arthroplasty in order to decrease the risk of infection. It protects surgeon from splash and also prevents contamination of surgical field from reverse splash by virtue of its perceived sterility. A prospective study was conducted to confirm if SSHS remain sterile throughout the procedure in Hip (THA) and Knee (TKA) Arthroplasty. We also evaluated if type of theatre had any effect on degree of contamination. Visor area of 40 SSHS was swabbed at half hourly interval until the end of the procedure. Two groups of 20 each were made on the basis of theatre used for performing surgery. Group 1 (Gp1) had surgery performed in laminar flow and Group 2 (Gp2) in non-laminar flow theatre. Swabs collected were processed to compare the time dependent contamination of the SSHS and identify the organisms responsible for contamination.Background
Material and Methods
Postoperative leg swelling after a total knee replacement is common complaint amongst patients. We studied leg swelling by constructing a novel, simple and cost water volumeter. A pilot study was conducted on 15 volunteers by two observers and each observer took a total of three readings. The mean intraobserver variation was 0.2 percent and mean interobserver variation was 0.3 percent, indicating a highly acceptable level of accuracy. The water volumeterwas then used in a randomized prospective study was conducted to determine the relationship between postoperative leg swelling and Fraxiparine, a low molecular weight heparin. From the period of 1st January 2000 till 31th October 2000, a total of 36 patients were enrolled in the study. 18 patients in the study group received fraxiparine and 18 patients in the control group did not. The leg volume was measured preoperatively and on postoperative days 5, 7 and 10. We found that both groups developed maximum swelling at postoperative day 5 and this decreased to almost normal at day 10. However the fraxiparine group was statistically less swollen (4%) than the control group (10%) on day 5 and also on day 7 (−0.2% vs 7%). These findings were independent of whether the patient underwent bilateral or unilateral surgery. We conclude that low molecular weight heparins are effective in reducing postoperative leg swelling in total knee replacement.
