China
Africa
Explore chapters and articles related to this topic
Congenital Dislocation of the Patella
Published in Benjamin Joseph, Selvadurai Nayagam, Randall T Loder, Anjali Benjamin Daniel, Essential Paediatric Orthopaedic Decision Making, 2022
The knee was gently flexed to 90 degrees and extended fully; the patella dislocated when the knee was flexed. The patellar tendon was split into two slips, and the lateral slip was carefully divided close to its insertion, taking care to avoid damaging the growth plate. The lateral half of the patellar tendon was passed posterior to the intact medial half of the tendon and advanced as far medially as possible and anchored to the periosteum with non-absorbable sutures. The stability of reduction was checked again, and at this point the patella remained in the normal position on flexing the knee. The wound was closed, and a plaster-of-Paris cast was applied with the knee in extension.
Knee Pain
Published in Benjamin Apichai, Chinese Medicine for Lower Body Pain, 2021
The patellar tendon is located inferior to the patella. The patellar tendon originates in the patellar apex and runs inferiorly to attach to the tibial tuberosity on the anterior aspect of the tibia. Technically the patellar tendon is not supposed to be called a tendon. A tendon is connective tissue that connects a muscle to a bone, but the patellar tendon connects a bone (patellar) to a bone (tibial tuberosity). A ligament connects between bones, so the patellar tendon should be called the patellar ligament.
Animal Models of Ligament and Tendon Fixation
Published in Yuehuei H. An, Richard J. Friedman, Animal Models in Orthopaedic Research, 2020
Franklin A. Young, Yuehuei H. An
In a sheep model of PCL reconstruction, Kasperczyk et al.23 investigated the healing of patellar tendon autografts. The graft was fixed to bone by screw/washer. They defined a four stage healing process of autogenic patellar tendon graft, necrosis, revascularization, collagen formation, and remodeling. They also found that the biomechanical data were correlated with the morphological phases. All ligaments failed at the ligament portion, demonstrating the effectiveness of the screw fixation.
First presentation of polyarticular gout secondary to platelet-rich plasma injection: a case report
Published in Scandinavian Journal of Rheumatology, 2023
A 57-year-old Asian man presented in February 2022 with the first episode of acute pain and swelling affecting multiple joints 24 h following an intratendinous platelet-rich plasma (PRP) injection in his left knee. He had a background diagnosis of hyperlipidaemia, hypertension, transient ischaemic attack and pre-diabetes. He was under orthopaedic investigation for osteoarthritis in both knees, where previous intra-articular steroid injections had been provided without success. A subsequent magnetic resonance imaging scan of the left knee demonstrated a grade 2 chronic tear of the proximal patellar tendon at the attachment to the inferior patellar pole. Intratendinous PRP injection was arranged. The patient developed intense inflammatory joint symptoms 24 h following the injection and presented to the hospital 10 days later owing to persistent symptoms. There was no history of preceding infections. He was not on diuretics, but admitted to consuming alcohol over the recommended allowance.
Tibial component rotation alters soft tissue balance in a cruciate retaining total knee arthroplasty
Published in Computer Assisted Surgery, 2022
Gavin Clark, Mark Quinn, Jerome Murgier, David Wood
Our results show that small variations in tibial tray rotation, can have large effects on contact pressures within the knee. This study favors the use of the medial border of the patellar tendon (Akagi’s line) as the tibial rotation reference in preference to the medial one third of the tubercle (Insall’s axis) in order to obtain a more balanced knee. This study does show that a pre-resection balancing technique utilizing robotic arm assisted technology can reliably achieve balanced pressures between compartments. A more reliable method than the use of tibial landmarks to identify appropriate tibial rotation for each TKA is required. Future TKA research will move toward using advanced technologies to measure knee kinematics, plan component alignment pre and intra operatively with the aim of optimizing balance and kinematics of the TKA designs.
Performance-based outcomes following patellar tendon repair in professional athletes
Published in The Physician and Sportsmedicine, 2020
Matthew T. Nguyen, Wellington K. Hsu
Patellar tendon repairs lead to excellent outcomes in the general population but have varying effects in professional athletes depending on sport played. The differing intricacies, biomechanics, and demands of each sport on a repaired patellar tendon lead to differences in performance measures of their respective players. American football athletes experienced the worst postoperative outcome, with the most precipitous drop in performance in the short-term period. These players also have the lowest RTP rates and shortest careers after surgery. Professional basketball athletes suffered a significant decrease in games played throughout both the short- and medium-term periods. Professional baseball athletes exhibited no significant changes in performance or games played post-surgery. Soccer athletes demonstrated a decrease in goals and assists per game and games played in the short-term period that returned to baseline in the medium-term period.