Comparative analysis of discoid lateral meniscus size: a distinction between symptomatic and asymptomatic cases
ConclusionSymptomatic patients with DLM had larger knee morphological changes than asymptomatic ones. Age affected the meniscal occupancy in the sagittal plane only in asymptomatic patients.Level of evidenceIII. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 7, 2023 Category: Orthopaedics Source Type: research

Time to treat the tendon rupture induced by surgery: early hypertrophy of the patellar tendon graft site predicts strong quadriceps after ACLR with bone-patellar tendon-bone autograft
ConclusionPT LSI was more predictive of QI than Quad CSA LSI. Involved limb PT CSA mattered more in predicting peak knee extensor torque than did Quad CSA, but in the uninvolved limb, Quad CSA was the most important predictor of peak knee extensor torque. Graft site patellar tendon hypertrophy is key for strong quadriceps early after ACLR. Early targeted loading via exercise to promote healing of the graft site patellar tendon may bring patients a step closer to winning their battle against quadriceps dysfunction.Level of EvidenceLevel I. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 7, 2023 Category: Orthopaedics Source Type: research

Higher incidence of patellar incongruence after under correction of pre-arthritic coronal alignment following medial unicompartmental knee arthroplasty
ConclusionKnees with under correction from their pre-arthritic coronal alignment following medial UKA were associated with a two-fold higher probability of having postoperative patellofemoral incongruence, as well as inferior mid-term Kujala scores compared to knees with restored pre-arthritic coronal alignment and knees with overcorrection from their pre-arthritic coronal alignment. Patellofemoral incongruence alone did not negatively impact functional outcome scores.Level of EvidenceIV, case series. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 7, 2023 Category: Orthopaedics Source Type: research

Meniscal allograft transplantation improves patient-reported outcomes in both minimal and moderate knee osteoarthritis at 1 and 2  years postoperatively
ConclusionsMAT yielded improved patient-reported outcomes and subjective satisfaction at 1 and 2  years postoperatively. The differences from baseline exceeded the minimal clinically important difference (MCID) at all timepoints. The severity of cartilage damage and knee OA in terms of the K–L grade at the time of surgery did not affect the KOOS and Lysholm scores after the MAT procedure. K nee OA progression in terms of K–L grade worsening was not observed in any patients.Level of evidenceIII. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 7, 2023 Category: Orthopaedics Source Type: research

Applying additional autologous platelet-rich fibrin matrix or serial platelet-rich plasma to microfracture technique increases the quality of the repaired cartilage
ConclusionThe application of PRP and PRFM in combination with MF treatment exhibited a positive impact on the repair and restoration of cartilage, and produced better outcomes than the individual use of PRP and PRFM. Nevertheless, in the treatment of full thickness chondral defects, the use of PRFM injection is recommended, which is performed intraoperatively at a single time and with no difficulty of repeating after surgery, instead of serial PRP injections based on the macroscopic and histological results obtained in the present study indicating that there was no significant difference between the use of these two adjuva...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 6, 2023 Category: Orthopaedics Source Type: research

Near complete quadriceps tendon healing 2 years following harvest in anterior cruciate ligament reconstruction
ConclusionAt a minimum of 2  years following QT harvest during ACLR, the QT became slightly thicker and narrower (approximately 11% and 7%, respectively). While the current study demonstrates that QT re-harvesting can be considered due to nearly normalized tendon morphology, future histological and biomechanical studies are r equired to determine the re-harvesting potential of the QT.Level of evidenceIV. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 6, 2023 Category: Orthopaedics Source Type: research

The accessory heads of the quadriceps femoris muscle may affect the layering of the quadriceps tendon and potential graft harvest lengths
ConclusionThe findings of this study provide a detailed anatomy of the quadriceps tendon including the accessory tendons of the accessory heads of the quadriceps tendon. The accessory heads of the quadriceps femoris muscle contribute to the layering of the quadriceps tendon. The second conclusion of this study is the development of safe distances depending on the types. Not all types are perfect for harvesting —Type IV seems to be the safest type, in turn Type V the most dangerous. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 6, 2023 Category: Orthopaedics Source Type: research

Reference standards for stress radiography measurements in knee ligament injury and instability: a systematic review
ConclusionDespite heterogeneity in the available literature with regard to stress examination techniques and device utilization, the data support that stress radiography techniques were accurate and reliable when compared to numerous alternatives in the diagnosis of acute and chronic knee ligament injuries. The present study also provides average increased ipsilateral compartment gapping/translation for specific knee ligament injuries based on the best available data. These values provide a reference standard for the interpretation of stress radiography techniques, help to guide surgical decision-making, and provide benchm...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 4, 2023 Category: Orthopaedics Source Type: research

Inconsistent repeatability of the Dejour classification of trochlear dysplasia due to the variability of imaging modalities: a systematic review
ConclusionThis systematic review revealed that the Dejour classification remains the most widely used to assess trochlear dysplasia and that the majority of studies that assessed the reliability of the Dejour classification, reported moderate to near-perfect inter-observer agreement; however, pooling of results for comparison among the included studies was inappropriate due to substantial variation in imaging protocols and non-standardised criteria to distinguish severe from moderate dysplasia.Level of evidenceLevel IV.Trial registryThe PROSPERO registration number is CRD42023386731. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - November 2, 2023 Category: Orthopaedics Source Type: research

MRI-based torsion measurement of the lower limb is a reliable and valid alternative for CT measurement: a prospective study
ConclusionMeasurement of tibial as well as femoral torsion was comparable for CT and MRI measurement. Therefore, this study supports MRI measurement as an equivalent alternative for CT measurement concerning torsional malalignment to reduce exposure to radiation.Level of evidenceLevel II. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 26, 2023 Category: Orthopaedics Source Type: research

Midterm results of intra-articular stromal vascular fraction injection for the treatment of knee osteoarthritis
ConclusionIntra-articular SVF injection decreased pain and significantly improved the functional outcomes in the first 2  years in knees with grade 2–3 osteoarthritis; however, these positive effects of the injection disappeared in the 3rd year. Although short-term successful results of SVF have been reported in the literature, prospective studies are needed for medium- and long-term results. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 25, 2023 Category: Orthopaedics Source Type: research

Patella scores are similar both with gap balancing and measured resection after total knee arthroplasty: a randomized single-centre study
ConclusionThe results of this study showed that at the end of the 2nd year, the HSS patella scores were better, FCs were more externally rotated and PCO ratios were higher in TKAs using the GB technique. However, taking into account that the difference between the 2nd year HSS patella scores was too small to be considered clinically significant, it was shown that both the GB and MR techniques can be used for FCR in clinical practice without any hesitation. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 25, 2023 Category: Orthopaedics Source Type: research

High body mass index is not a contraindication for an arthroscopic ligament repair with biological augmentation in case of chronic ankle instability
ConclusionATFL repair with biological augmentation using IER gives excellent results for patients with BMI  ≥ 30. Compared to patients with BMI <  30, they present a slightly lower preoperative and postoperative Karlsson score, however, with a similar satisfaction rate, but are at higher risk of transient superficial peroneal nerve dysesthesia.Level of evidenceLevel III. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 25, 2023 Category: Orthopaedics Source Type: research

Long leg radiographs underestimate the degree of constitutional varus limb alignment and joint line obliquity in comparison with computed tomography: a radiographic study
ConclusionAlignment determined by LLRs underestimates the magnitude of both constitutional varus alignment and joint line obliquity compared to CT, differences that notably increase the proportions of patients included in CPAK Types I and II. These distinctions are primarily due to underestimation of proximal tibial varus when measured on LLRs compared to CT, which more specifically defines articular weight-bearing points.Level of evidenceIII. (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 25, 2023 Category: Orthopaedics Source Type: research

Aseptic survival of the 1.5-stage exchange arthroplasty for periprosthetic joint infection was acceptable when using an autoclaved femoral component and a new polyethylene insert
ConclusionThe aseptic survival of the 1.5-stage exchange arthroplasty was acceptable when using an autoclaved femoral component and new PE. The appropriate coronal position of the PE helps ensure favourable survival of 1.5-stage exchange arthroplasty.Level of evidenceIV (Source: Knee Surgery, Sports Traumatology, Arthroscopy)
Source: Knee Surgery, Sports Traumatology, Arthroscopy - October 25, 2023 Category: Orthopaedics Source Type: research