Knee Outcome Scores Research Articles

Five-year Outcomes Following Anterior Cruciate Ligament Reconstruction: Does Sex Impact Patient-Reported Outcomes and Re-operation Rates?

BACKGROUND: Females have been shown to have a two to eight times higher risk of Anterior Cruciate Ligament (ACL) injury than their male counterparts. Despite the clear difference in risk, sex-based differences in outcomes following ACL reconstruction are less well understood. The purpose of this study was to compare 5-year outcomes between males and females who were under the age of 26 at the time of enrollment in an ACL registry. We hypothesize that male and female patients will have similar patient-reported outcome scores, but females will have a higher incidence of ACL graft re-injury. METHODS: Patients undergoing ACL reconstruction while under the age of 26 were included if they also had completed five-year follow-up questionnaires. Outcomes were compared between males and females, and the outcomes of interest included the International Knee Documentation Committee (IKDC), Knee Injury and Osteoarthritis Score (KOOS), ACL Return to Sport after Injury (ACL-RSI), and reoperation. RESULTS: Of the 159 patients enrolled in the registry, 35 had complete follow-up (22%). The average difference between postoperative and preoperative IKDC scores for males and females was 37.9 ± 21.6 and 33.2 ± 26.6, respectively (p=.600). The average difference between postoperative and preoperative KOOS scores for males and females was 31.6 ± 15.4 and 29.2 ± 23.0, respectively (p=0.731). The average ACL-RSI for males and females was 79.8 ± 47.0 and 56.5 ± 31.1, respectively (p=0.088). The incidence of reoperation and ACL re-tear for the entire cohort was 28.6% and 5.7%, respectively. CONCLUSION: Overall, males and females under the age of 26 who underwent ACLR had similar 5-year outcomes regarding outcomes scores after surgical intervention. The ACL-RSI was lower in women, however, failed to reach significance. The reoperation rate for males and females was not statistically significant. ACL reconstruction is a successful operation in young males and females with improvement in knee outcome scores and ability to return to sport.

Evaluation of comorbidity scoring systems in patients undergoing knee arthroplasty.

Ageing populations are increasing the demand for knee arthroplasty. Concurrently, the prevalence of medical comorbidities are rising too. The Self-Administered Comorbidity Questionnaire was developed to provide a patient's assessment of their own comorbidities whereas the American Society of Anesthesiologists grades and the Charlson Comorbidity Index utilise clinical evaluation to objectively measure perioperative morbidity and mortality risk. The primary aim of this study was to compare Self-Administered Comorbidity Questionnaire scores with American Society of Anesthesiologists grades and Charlson Comorbidity Index scores. The secondary aim was to compare Self-Administered Comorbidity Questionnaire scores with knee outcome scores. A single centre observational cohort study of patients with knee osteoarthritis undergoing elective knee arthroplasty. Preoperative evaluation included Self-Administered Comorbidity Questionnaire scores, American Society of Anesthesiologists grades, Charlson Comorbidity Index scores and validated patient-reported outcome measures specific to knee surgery. A total of 141 patients were included in this study. Self-Administered Comorbidity Questionnaire scores were directly correlated with American Society of Anesthesiologists grade (rho = 0.37, p < 0.001) and Charlson Comorbidity Index scores (rho = 0.19, p = 0.047). Individual American Society of Anesthesiologists grades had significantly different Self-Administered Comorbidity Questionnaire scores (p = 0.001). Self-Administered Comorbidity Questionnaire scores were specifically associated with hypertension, ischaemic heart disease, chronic obstructive pulmonary disease and the total number of comorbidities, but American Society of Anesthesiologists and Charlson Comorbidity Index scores were associated with more comorbidities. Overall, Self-Administered Comorbidity Questionnaire scores were inversely correlated with patient-reported outcome measure scores. Self-Administered Comorbidity Questionnaire scores are associated with increasing comorbidity in patients with symptomatic knee osteoarthritis; however, American Society of Anesthesiologists grades and Charlson Comorbidity Index scores had stronger and more abundant associations with comorbidities and patient-reported outcome measure scores. Self-Administered Comorbidity Questionnaires may complement but not replace current objective assessments of comorbidity when evaluating perioperative risk for knee arthroplasty.

Dorsal Hook Plating of Patella Fractures With Immediate Range of Motion Results in Reliable Fixation, Low Implant Removal Rates, and Satisfactory Clinical Outcomes.

To evaluate radiographic and clinical patient-reported outcomes following dorsal hook plating of displaced patella fractures with permittance of immediate postoperative active closed chain range of motion. Retrospective review of prospectively collected data. Urban academic level 1 trauma center. Adult patients with displaced patella fractures (OTA/AO 34C1-3) who underwent dorsal plating with immediate range of motion between 2018 and 2023. Numerical Rating Scale for Pain, Knee Outcome Score (KOS-ADL), Tegner-Lysholm score, radiographic union, and wound complications were collected. Sixty-one patients were included (47 female) with an average age of 63 years (SD 14.7, range 22-86 years). The mean BMI was 24.2 (SD 3.6, range 16.6-33.3). There were 13 34-C2 and 48 34-C3 fractures. All but 2 patients (96.7%) achieved bony union after the index procedure. 89% (n = 54) of patients completed outcome surveys with at least 6-month follow-up. Six patients (9.8%) underwent removal of plate implant at a mean of 15.1 months postoperatively. The mean KOS-ADL score was 91.4, the mean Tegner-Lysholm score was 78.1, and the mean NRS was 2.7. Dorsal hook plating offers secure fixation to allow early range of motion, reliable fixation with low nonunion and implant failure rates, low implant removal rates, and satisfactory patient-reported outcomes. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Prevalence of Patellofemoral Pain Syndrome and Its association with Knee Stiffness in Sanitary Workers

Patellofemoral pain syndrome is an overuse injury that causes pain in the front of knee and it’s more common in females. Heavy workload and consistent stress on knee especially in labour work is also affecting male population with this syndrome. It can affect quality of life by limiting functions and it has long term effects. Objective: To determine the prevalence of patellofemoral pain syndrome in sanitary workers who are facing knee stiffness or knee pain. Methods: A sample of 128 participants of age 30-50 years of sanitary workers was included for the survey, according to inclusion criteria. For the selection of participants, convenience sampling was used. Pendulum test, Patellar grind test, and Knee Injury and osteoarthritis outcome score survey for symptoms and pain were used to collect data. An informed consent was signed by the participants stating that personal information of participants is confidential. Results: SPSS version 22 was used to define the descriptive and associated analysis of data. Results showed that there is association between Knee injury and osteoarthritis outcome score symptoms and patellar grind test (p&gt;.0001) while there is no association between knee outcome score pain sign and pendulum test (p=.482). 259 participants reported 71% overall prevalence of patellofemoral pain. Conclusions: It is concluded that male sanitary workers had high prevalence levels of Patellofemoral pain. Preventative measures such as ergonomics training, physical activity should be taken into consideration to enhance quality of life.

Clinical and radiological efficacy of single-dose intra-articular high-molecular-weight hyaluronic acid in knee osteoarthritis.

While visco-supplementation is being used for the treatment of knee osteoarthritis (OA), the published reports vary widely in benefits afforded by this treatment. It was therefore proposed to assess the objective parameters along with subjective outcomes. Our study assessed the radiological and clinical efficacy of single-dose high-molecular-weight intra-articular hyaluronic acid (HMW-IAHA) injection in knee OA. This interventional cohort study was conducted in a calculated sample size of 44 patients with knee OA. Visual analog scale (VAS) and knee OA and outcome score (KOOS) were used for clinical assessment, and whole organ magnetic resonance imaging score (WORMS) for radiological assessment. The subjects were given a single dose of HMW-IAHA injection, 90 mg/3 ml, and were assessed on day 0 and day 90. Statistical Package for Social Sciences (SPSS) software was used. At the day 90 follow-up, there was an improvement in mean ± standard deviation values of VAS score (day 0: 8.53 ± 0.81, day 90: 5.97 ± 0.87), KOOS score (day 0: 27.33 ± 15.18, day 90: 57.26 ± 14.26), and the cartilage signal and morphology in the medial femorotibial joint (day 0: 11.02 ± 6.26 and day 90: 10.91 ± 6.22) and patellofemoral joint (day 0: 10.35 ± 4.36 and day 90: 10.28 ± 4.39) compartments. There was a decrease in synovitis score from 2.3 ± 1.61 to 1.3 ± 1.3 in the medial femorotibial joint compartment and total WORMS score (day 0: 66.57 ± 36.06, day 90: 65.14 ± 35.62). A single dose of intra-articular injection with high-molecular-weight hyaluronic acid produces improvement in the clinical symptoms and quality of life as well as is effective in maintaining the articular cartilage integrity and reducing synovial inflammation.

Though five-strand hamstring autografts demonstrate greater graft diameter, postoperative outcomes are equivocal to four-strand hamstring autograft preparations: a systematic review and meta-analysis of level I and II studies.

To compare graft dimensions, functional outcomes, and failure rates following anterior cruciate ligament reconstruction (ACLR) with either five-strand or four-strand hamstring autograft options. Three databases (MEDLINE, PubMed, and EMBASE) were searched from inception to 22 April 2023 for level I and II studies comparing five- and four-strand hamstring autografts in ACLR. The authors adhered to the PRISMA and R-AMSTAR guidelines as well as the Cochrane Handbook for Systematic Reviews of Interventions. Data on demographics, surgical details and rehabilitation, graft diameter, patient-reported outcome measures (PROMs), and rates of positive Lachman test, positive pivot shift test, and graft rupture were extracted. PROMs included Knee Osteoarthritis and Outcome Score (KOOS) subscales, Lysholm, and International Knee Documentation Committee (IKDC). One randomized controlled trial (RCT) and four prospective cohort studies with 572 patients were included. Graft diameters were larger in the five-strand group with a mean difference of 0.93mm (95% CI 0.61 to 1.25, p < 0.001, I2 = 66%). The five-strand group reported statistically higher KOOS ADL subscale and Lysholm scores with a mean difference of 4.85 (95% CI 0.14 to 9.56, p = 0.04, I2 = 19%) and 3.01 (95% CI 0.48 to 5.53, p = 0.02, I2 = 0%), respectively. There were no differences in KOOS symptoms, pain, quality of life, or sports subscales, or IKDC scores. There were no differences in rates of positive Lachman test, positive pivot shift test, or graft rupture with pooled odds ratios of 0.62 (95% CI 0.13 to 2.91, n.s., I2 = 80%), 0.94 (95% CI 0.51 to 1.75, n.s., I2 = 31%), and 2.13 (95% CI 0.38 to 12.06, n.s., I2 = 0%), respectively. Although five-stranded hamstring autografts had significantly larger graft diameters compared to four-stranded grafts with a mean difference of 0.93mm, similar graft rupture rates and clinical laxity assessments were identified following ACLR. While some PROMs were statistically superior in the five-stranded hamstring groups, the threshold for the minimal clinical important difference was not reached indicating similar clinical outcomes overall. Level II.

From thigh to pelvis: female genital prolapse repair with an autologous semitendinosus tendon transplant

Introduction and hypothesisThe use of synthetic mesh for prolapse and incontinence surgery is discussed controversially and in several countries is either no longer used or permissible. Previous approaches with autologous tissue did not show from a patient´s perspective convincing long-term results. As there have been repeatedly significant complications with synthetic mesh, a new approach is urgently needed.During orthopedics and trauma surgeries, tendons from the thigh have been used for decades to replace cruciate ligament. The procedure of tendon removal from the thigh is fast, easy to learn and morbidity is low. In addition, a long-term durability of the transplant ought to be expected. The objective of this investigation was to show our experience with a semitendinosus tendon instead of a mesh for genital prolapse repair.MethodAfter the first successful attempts using such tendons in cervicosacropexy and pectopexy in patients with genital prolapse, we initiated a national multicenter study in 2020. Five German hospitals participated in order to determine the feasibility of cervicosacropexy with tendon tissue instead of mesh.ResultUp until now, we have operated and observed 113 patients for at least 6 months and have seen stable results in terms of fixation of the apical compartment. The expected low morbidity at the donor site was also confirmed through subjective assessment of the patients (Knee and Osteoarthritis Outcome Score). Improvement of quality of life was confirmed after the procedure with the Short Form Health Survey 12, Version 2.0. The results of this multicenter study showed that the desired elevation of the apical compartment with tendon tissue can be achieved with low morbidity and without a synthetic mesh.ConclusionWomen with uterine prolapse can be treated minimally invasively and with very low morbidity by using the semitendinosus tendon. The involvement of multiple (five) medical centers confirms that the technique is easy to learn and be transferred to other clinical centers.

Strength-Based Rehabilitation on Clinical Outcomes in Patients Postpartial Meniscectomy: A Systematic Review and Meta-analysis.

The aim of the study is to determine the effect of strength-based rehabilitation programs on patients who underwent partial meniscectomy procedures. Three databases MEDLINE, PubMed, and Embase were searched from inception to May 9, 2022. Data on functional outcomes such as quadriceps and hamstring strengths, as well as patient-reported outcomes such as Knee Osteoarthritis and Outcome Score and visual analog scale were recorded. A total of nine studies comprising 417 patients were included in this review. There were no significant differences in quadriceps or hamstring strength measures between preinterventation and postintervention for both groups. Knee Osteoarthritis and Outcome Scores significantly increased from preintervention and postintervention in both control and exercise groups. Visual analog scale scores changed from 5.0 to 1.4 cm in the exercise arm and 3.1 to 1.9 cm in the control arm. Strength-based exercise programs for patients postpartial meniscectomy did not result in significantly different improvements in quadriceps or hamstring strength compared with control programs. However, strength-based exercise programs resulted in significantly higher Knee Osteoarthritis and Outcome Scores and a greater decrease in visual analog scale scores. Further studies, specifically well-designed systematic randomized controlled trials, are necessary to elucidate the specifics behind what type of exercises to use in addition to load progression and frequency of training.

Arthroscopic Fixation of Posterior Cruciate Ligament Avulsion Fracture with Combined Suture Tape and Internal Bracing by Suture-bridge Technique

Background: Tibial-sided avulsion fracture of the posterior cruciate ligament (PCL) almost always require surgical intervention. Multiple techniques of reduction and fixation have been described in the literature from open/mini-open conventional screw fixation to the all-arthroscopic fixation techniques. Recent evidence shows that the all-arthroscopic fixation techniques had higher subjective and objective knee outcome scores with the advantage of addressing concomitant intra-articular injuries such as osteochondral injuries or meniscal problems. Objectives: We propose an arthroscopic fixation technique using suture tapes placed in a suture-bridge technique and combined it with internal bracing to fix tibial-sided avulsion fracture of the PCL. Surgical Technique: After routine diagnostic knee arthroscopy in supine position via standard anterolateral and anteromedial portal, two standard posteromedial and posterolateral portal was created. A standard PCL aiming guide was used to create the tibial tunnel. PCL was secured using two single-looped suture tapes around it with both limbs brought to the posterior compartment through either side of the PCL (medial and lateral). Internal bracing was done with suture tape secured to the femoral side using fixed suspensory device and brought to the posterior compartment through the lateral side of the PCL. All tapes are then passed through the tibial tunnel in a suture-bridge manner and fixed to a button in 30° flexion while reduction quality was constantly checked under direct visualization. Results: The suture bridge configuration provides direct bone-to-bone healing and secure enough fixation for early range of motion and power exercises. All-arthroscopic approach avoids posterior element related complications such as fragment comminution and neurovascular injuries. Conclusions: This technique can be considered as a safe and effective method for fixation of tibial-sided PCL avulsion fracture, which allows active mobilization with lowered risk of complications.

Morphological reflection of highly purified chondroitin sulfate action in patients with decompensated form of knee osteoarthritis

Objective: to study the morphological reflection of the parenteral form of highly purified chondroitin sulfate (CS) action in patients with osteoarthritis (OA) of the knee joints (KJ) during total knee arthroplasty (TA).Patients and methods. An open, prospective, controlled, randomized study included 67 patients (24 men and 43 women aged 41—73 years) with stage III knee OA and grade 2 functional insufficiency. The 1st (control) group included 35 patients, the 2nd (main) group included 32 patients. At baseline of the study, all patients were taking non-steroidal anti-inflammatory drugs (NSAIDs) at a standard daily dose. Patients of the 2nd group 2 months before the TA of KJ, additionally received a parenteral form of CS (Honrogard®), intramuscularly every other day: the first 3 injections at a dose of 100 mg/day; and if tolerability was good starting from the 4th injection, at a dose of200 mg / day (course — 25 injections). The intensity of pain was assessed according to the visual analog scale, WOMAC index, functional status according to the KOOS (Knee and Osteoarthritis Outcome Score) scale and the Lequesne index, standard radiography and magnetic resonance imaging of the knee joint were performed with an assessment of the T2 relaxation time. TA KJ was carried out according to C. Ranawat method.Results and discussion. In contrast to patients who took only NSAIDs, in patients who received CS during 50 days within 2 months before surgery, there were signs of adaptive restructuring in all layers of the preserved volume of hyaline cartilage and a decrease in the synovial membrane inflammation at the time of TA of KJ.Conclusion. The obtained results allow us to recommend the use of the parenteral form of CS (Honrogard®) according to the described scheme within 2 months before the TA of KJ in order to improve the morphological characteristics of cartilage and synovial tissue in the joints of the contralateral lower limb, taking into account the increase in the load on it in the postoperative period.

Revision lateralization osteotomy of the tibial tubercle has excellent outcomes in patients suffering from previous medial tibial tubercle overcorrection

IntroductionTibial tubercle osteotomy (TTO) is a common procedure used to treat patients with patellofemoral instability (PFI) and osteoarthritis (PFOA). Medial patellar maltracking due to previous excessive medialization of the tibial tubercle has rarely been reported. Therefore, the goal of this study was to assess patient-reported outcome measures (PROMs) after revision osteotomy with lateralization of the tibial tubercle (RL-TTO) to correct medial patellofemoral maltracking.Materials and methodsBetween 2017 and 2021, a series of 11 patients (male/female 1/10; age 35.8 ± 10.5 years) were treated by RL-TTO, of whom 8 patients could be retrospectively evaluated after a mean of 32.4 ± 15.1 months (range 18–61 months) postoperatively. The Kujala anterior knee pain scale, the patellofemoral subscale of the Knee Osteoarthritis and Outcome Score (KOOS-PF), and a numeric analog scale (NAS; 0–10) regarding anterior knee pain (AKP) at rest and during activity were assessed from pre- to postoperatively.ResultsThe preoperative mean tibial tubercle-trochlear groove (TT-TG) and tibial tubercle-posterior cruciate ligament (TT-PCL) distances were − 6.5 ± 6.5 mm and 0.7 ± 4.6 mm, respectively. The intraoperatively determined amount of tibial tubercle lateralization averaged 10.7 ± 3.6 mm. The Kujala score and KOOS-PF improved significantly from 33.6 ± 10.1 (23–51) points to 94.4 ± 6.2 points (82–100) (p < 0.001) and from 20.6 ± 13.2 points (0–43.3) to 87.3 ± 9.9 points (72.8–100) (p < 0.001) from pre- to postoperatively, respectively. Pain at rest decreased from 5.8 ± 1.9 to 0.8 ± 0.9 (p < 0.001), and pain during activity decreased from 8.6 ± 1.3 to 1.6 ± 1.5 (p < 0.001).ConclusionRL-TTO significantly improved subjective knee function and AKP in patients suffering from medial patellar maltracking due to previous excessive tibial tubercle medialization osteotomy at short-term follow-up.

ОЦЕНКА ПРОПРИОЦЕПТИВНОЙ ФУНКЦИИ У ПАЦИЕНТОВ ПОСЛЕ ВОССТАНОВЛЕНИЯ ПЕРЕДНЕЙ КРЕСТООБРАЗНОЙ СВЯЗКИ

Abstract. Introduction. Recently, interest has been revived in the primary repair of the anterior cruciate ligament, which is largely due to the potential possibility of preserving its proprioceptive function. Aim. The aim of the study was to evaluate the proprioceptive function of the knee joint in patients who underwent anterior cruciate ligament repair with additional augmentation and to compare the results with similar parameters in patients who underwent anterior cruciate ligament reconstruction using semitendinosus muscle tendon. Material and methods. 40 patients were evaluated, who were divided into two groups: in group 1 (n=20), due to damage to the anterior cruciate ligament, its repair with additional augmentation was performed; in group 2 (n=20), anterior cruciate ligament reconstruction using tendon of the semitendinosus muscle was performed. Proprioceptive function was tested no earlier than 12 months after surgery using the method of active reproduction of passive positioning and the force sense reproduction method. In addition, the functional state of the treated knee joint was compared using the Knee and Osteoarthritis Outcome Score and International Knee Documentation Committee questionnaire scales. The significance of differences between the study groups was assessed using the Mann-Whitney U-test (differences were considered statistically significant at p ≤ 0.05). Results and discussions. Despite the similar functional outcomes on the questionnaire scales (p&gt;0.05), the patients of group 1 achieved statistically significant better results of the proprioception coefficient for all the methods used in comparison with group 2 (p&lt;0.05). In addition, a comparative assessment of the treated and contralateral healthy joint within the groups showed similar data in group 1 patients (p&gt;0.05) and statistically significant differences in group 2 (p&lt;0.05) also for all methods used. Conclusion. The study demonstrated that the proprioception of the knee joint after anterior cruciate ligament repair is almost identical to that in the contralateral healthy joint and is significantly better than after anterior cruciate ligament reconstruction with a semitendinosus muscle tendon.

Isolated Versus Full Component Revision in Total Knee Arthroplasty for Aseptic Loosening

BackgroundRevision of both femoral and tibial components of a total knee arthroplasty (TKA) for aseptic loosening has favorable outcomes. Revision of only one loose component with retention of others has shorter operative time and lower cost; however, implant survivorship and clinical outcomes of these different operations are unclear. MethodsBetween January 2009 and December 2019, a consecutive cohort of revision TKA was reviewed. Univariate and multivariable analyses were used to study correlations among factors and surgical related complications, time to prosthesis failure, and functional outcomes (University of California Los Angeles, Knee Society functional, knee osteoarthritis and outcome score for joint replacement, Veterans RAND 12 (VR-12) physical, and VR-12 mental). ResultsA total of 238 patients underwent revision TKA for aseptic loosening. The mean follow-up time was 61 months (range 25 to 152). Ten of the 105 patients (9.5%) who underwent full revision (both femoral and tibial components) and 18 of the 133 (13.5%) who underwent isolated revision had subsequent prosthesis failure [Hazard ratio (HR) 0.67, P = .343]. The factor analysis of type of revision (full or isolated revision) did not demonstrate a significant difference between groups in terms of complications, implant failures, and times to failure. Metallosis was related to early time to failure [Hazard ratio 10.11, P < .001] and iliotibial band release was associated with more complications (Odds ratio 9.87, P = .027). Preoperative symptoms of instability were associated with the worst improvement in University of California Los Angeles score. Higher American Society of Anesthesiologists status and higher Charlson Comorbidity Index were related with worse VR-12 physical (−30.5, P = .008) and knee osteoarthritis and outcome score for joint replacement (−4.2, P = .050) scores, respectively. ConclusionIsolated and full component revision TKA for aseptic loosening does not differ with respect to prosthesis failures, complications, and clinical results at 5 years. Poor American Society of Anesthesiologists status, increased comorbidities, instability, and a severe bone defect are related to worse functional improvement. Level of evidenceIII, cohort with control.

Patient’s subjective knee function 3-5 years following partial meniscectomy or meniscus repair compared to a normal population: a retrospective cohort study

PurposeEvaluate patient-reported knee function after arthroscopic partial meniscectomy (APM) and meniscus suture repair in two different age cohorts compared with a normal population.MethodArthroscopic meniscus surgery was performed on 421 patients...

Combined distal femoral osteotomy and tibial tuberosity distalization is effective in patients presenting with patellar instability and patellofemoral pain due to patella alta and femoral malalignment.

Patellar malalignment has been considered one of the major pathomechanical causes of patellofemoral instability and pain. The results have been reported after femoral varization/torsional osteotomy and tibial tuberosity distalization osteotomy (TTD-O). However, the combination of a femoral deformity (genu valgum/increased femur antetorsion) and patella alta remains underreported. Therefore, the aim of this study was to investigate the clinical outcomes of patients simultaneously treated by distal femoral osteotomy and TTD-O. The hypothesis was that restoration of patellofemoral (PF) alignment via the abovementioned osteotomies would achieve good patient-reported outcome measures. Between 2016 and 2019, a series of 25 knees in 20 patients were treated by a distal femoral osteotomy combined with a TTD-O aiming to correct patellofemoral malalignment consisting of genu valgum and/or increased femur antetorsion and patella alta. Six patients were lost to follow-up, and one patient refused to participate. Thus, 17 knees in 13 patients (male/female 1/12; age 27.4 ± 5.4years) were included and comprised the study group for this investigation. Patients were evaluated after a mean of 3.1 ± 0.9years postoperatively. The Kujala anterior knee pain scale and the PF-subscale of the Knee Osteoarthritis and Outcome score (KOOS-PF) were used to assess patients' reported outcome measures from pre- to postoperatively. The mean amount of torsional correction, valgus correction, and tibial tuberosity distalization averaged 14° (10°-18°), 5.2° (3.8°-8°), and 9mm (6°-15mm), respectively. The Kujala score increased by an average of 24.18 points from a mean of 66.6 ± 18.3 points (34-93 points) preoperatively to 90.8 ± 14.2 points (44-100 points) postoperatively (95% CI -33.0 to -15.3; p < 0.0001). The KOOS-PF score increased by an average of 33.7 points from a mean of 49.5 ± 24.5 points (9.1-88.6 points) preoperatively to 83.2 ± 21.6 points (15.9 -100 points) postoperatively (95% CI -47.5 to -19.9; p < 0.0001). The findings of this study indicate that the combination of a distal femoral osteotomy and a tibial tuberosity distalization osteotomy is effective in patients presenting with patellar instability and patellofemoral pain due to patella alta and femoral malalignment.

Use of computerised adaptive testing to reduce the number of items in patient-reported hip and knee outcome scores: an analysis of the NHS England National Patient-Reported Outcome Measures programme

ObjectiveOver 160 000 participants per year complete the 12-item Oxford Hip and Knee Scores (OHS/OKS) as part of the NHS England Patient-Reported Outcome Measures (PROMs) programme. We used a modern...

The Impact of Concomitant Meniscus Repair on Functional and Patient Reported Outcomes at Return to Activity in Paediatric Patients Undergoing ACL Reconstruction

Background:Paediatric patients undergoing Anterior Cruciate Ligament (ACL) reconstruction often present with a repairable meniscus tear. When a conservative early post-operative rehabilitation protocol is used to protect the meniscus repair, some have wondered whether this has an effect on functional and subjective outcomes, or time required, at return to activity.Purpose:The goal of this study was to compare the quantitative lower limb functional measures and subjective patient reported outcome scores at Return to Activity (RTA) in paediatric patients undergoing ACL reconstruction, with or without meniscus repair.Methods:This study was performed as a retrospective comparative cohort analysis of prospectively collected data in paediatric patients undergoing ACL reconstruction. Inclusion criteria for this study included a full data set and a visit to our biomechanics lab post-operatively, after being cleared for RTA by their attending surgeon. If a repairable meniscus injury was present, it was repaired concurrently with ACL reconstruction. Patients with a meniscus repair were provided rehabilitation guidelines that included partial weightbearing and limited range of motion (ROM) for six weeks, whereas full weightbearing and unrestricted ROM was recommended for the non-meniscal repair group. Postoperative quantitative knee functional outcome variables (drop vertical jump ground reaction forces, isometric knee extension/flexion strength, and hip abduction strength) were expressed as limb symmetry indices (LSIs; reconstructed limb/uninjured limb). Patient reported subjective knee outcome scores (Tegner and HSS Pedi-FABS) were also obtained. Differences in outcome measures were assessed using Mann-Whitney U-test and independent T-tests.Results:Twenty-four paediatric ACL reconstruction patients met criteria for inclusion in this study. Thirteen patients had a meniscus repair (median age 15 (13-17)) and 11 patients did not (median age 15.8 (14-17)). The median days between surgery and follow-up was 267 (168-460) days for the meniscus repair group and 251 (167-435) days for the non-meniscus repair group. There were no differences between the groups for the postoperative drop vertical jump test (p=0.21), knee extension/flexion strength (p=0.88/0.46) and hip abduction strength (p=0.46). Both groups also displayed similar Tegner (6.1/6.2) and Pedi-FABS (12.5/12.8) scores.Conclusion:Despite conservative weight-bearing and range of motion restrictions, repair of the meniscus in combination with ACL reconstruction in pediatric patients does not appear to induce a meaningful strength deficit at the return-to-activity evaluation phase, and is therefore not expected to influence return to activity in comparison with non-meniscus repair patients. This is important guidance for paediatric patients, families, and rehabilitation professionals involved in the care of young athletes.Table 1.Patient characteristicsTable 2.Post-operative patient reported outcome scores

Global Variation in Studies of Articular Cartilage Procedures of the Knee: A Systematic Review.

ObjectiveThe objective of this study was to determine whether there are significant differences in terms of indications, techniques, patient variables, and objective and subjective outcome scores as a function of the geographic locale of published studies of knee articular cartilage surgery.MethodsAn electronic database search was performed of clinical studies evaluating knee articular cartilage procedures from 2000 to 2021. Studies were separated into global regions (Europe, Asia, North America, and South America) based on the study country. All cartilage-based treatments in each region were recorded. Patient age and sex, mechanism of injury, cartilage lesion size and location, follow-up time, failure rate, and knee outcome scores utilized were summarized and compared by region.ResultsA total of 2,923 studies were analyzed. Eighty level 1 and 2 studies met the inclusion criteria. The majority were from Europe (n = 60), followed by Asia (n = 11), North America (n = 7), and South America (n = 2). The majority of procedures in European and North American studies were cell-based and marrow-stimulation procedures. In Asian studies, the most common procedures were marrow-stimulation, experimental, and biologic procedures as defined by the authors. Asian countries had a higher proportion of females (P < 0.001) and an overall older patient population (P < 0.001). Regional variation was also seen in terms of lesion location, mechanism of injury, and failure rate.ConclusionMost high-level evidence for articular cartilage-based procedures of the knee comes from European countries. These studies vary by patient age and sex, anatomic location, and mechanism of injury. Global variation should be taken into consideration when interpreting and applying studies of knee articular cartilage surgery.

Anterior cruciate ligament reconstruction with lateral extra-articular tenodesis reduces knee rotation laxity and graft failure rate: A systematic review and meta-analysis.

To determine whether the addition of lateral extra-articular tenodesis (LET) to anterior cruciate ligament reconstruction (ACLR) reduces rotational laxity of the knee, and to compare the clinical results of this treatment with those of ACLR alone. PubMed, Embase, and Cochrane Library were searched by two researchers for clinical studies comparing ACLR with and without LET. Studies with only evidence levels I and II and studies in which anterior lateral ligament reconstruction was performed with grafts were excluded. The risk of bias of the studies was assessed using the Cochrane risk-of-bias and modified Downs & Black tools. The outcomes included (1) functional outcomes; (2) knee laxity measures; (3) knee injury osteoarthritis and outcome score; and (4) complications. The outcomes of the two groups were extracted, summarized and compared. A total of 234 studies were retrieved and 223 were excluded. Eleven clinical studies with 1745 patients were included in our meta-analysis. Compared to the patients who underwent ACLR alone, the patients who underwent ACLR with LET had reduced pivot-shift (odds ratio [OR] 0.48, 95% confidence interval [CI] 0.31 to 0.74, p = 0.0009), and lower graft failure rate (OR 0.34, 95% CI 0.20 to 0.55, p < 0.0001). Compared with ACLR only, ACLR combined with LET can effectively reduce rotation laxity of the knee joint, and reduce the graft failure rate in high-risk patients. However, the effects on the function and activity level of patients cannot be confirmed.

Management of mucoid degeneration of the anterior cruciate ligament: a systematic review

PurposeThe purpose of this study was to investigate the outcomes of management of mucoid degeneration of the anterior cruciate ligament (MDACL) by performing a systematic review of methods of treatment that have been reported.MethodsA systematic literature search in the databases MEDLINE, Embase, Google Scholar, Cochrane, ISI web of science and Scopus was performed through July 2020 by three independent reviewers. The review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines and registered in the PROSPERO database (CRD42018087782). Quality was assessed using the Methodological Index for Non-Randomized Studies (MINORS) criteria.ResultsA total of nine studies were eligible for review. All nine studies assessed the outcome of arthroscopic debridement of MDACL. A total of 313 knees in 292 patients were included. The mean follow up ranged from 13 to 72 months. There was strong association between MDACL and chondral lesions (82%) and between MDACL and meniscal tears (69%). The rate of simultaneous meniscectomy ranged from 13 to 44%. Postoperative pain relief ranged from 53.8 to 95%. There was an improvement in postoperative range of motion and outcome scores (Lysholm and International Knee Documentation Committee scores and the Knee Injury and Osteoarthritis Outcome Score). Postoperative Lachman test was positive in 40% of patients, and 6% of patients had symptomatic instability. The mean MINORS score was 9.5 out of 16 (4–12).ConclusionsArthroscopic debridement of the anterior cruciate ligament (ACL) results in satisfactory pain relief and improvement in knee outcome scores. Postoperative ACL laxity is common after arthroscopic ACL debridement, however, symptomatic instability is not. The need for delayed ACL reconstruction should be discussed preoperatively, especially if complete resection of the ACL is to be performed.Level of evidenceIV