scholarly journals Application of CT Medical Imaging Combined with Deep Learning 3D Reconstruction in the Diagnosis and Rehabilitation of Anterior Cruciate Ligament Injury in Table Tennis Players

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Zhenlei Chen ◽  
Jilai Xu ◽  
Youqing Shen ◽  
Tianshu Zhao ◽  
Jiayi Dong
Keyword(s):  
Anterior Cruciate Ligament ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Sports Injury ◽  
Ligament Injury ◽  
Table Tennis ◽  
Tennis Players ◽  
Cruciate Ligament Reconstruction ◽  
Bony Canal ◽  
Anterior Cruciate

Because of the intense competition, table tennis requires players to bear a strong physiological load, which increases the risk of sports injury. Anterior cruciate ligament (ACL) is an important structure of the knee joint to maintain forward stability and rotational stability and is also a common sports injury in table tennis players. ACL has poor self-repair ability after injury. Therefore, the purpose of this study is to provide a more comprehensive, reliable, and representative theoretical basis for the diagnosis and rehabilitation of anterior cruciate ligament injury in table tennis players, and three-dimensional reconstruction of ACL using dual-source computed tomography (DSCT) combined with deep learning was conducted. For this purpose, a number of table tennis players with ACL injuries were collected, and each patient underwent arthroscopic anterior cruciate ligament reconstruction. DSCT scanning was performed on several knee joints, the 3D model of the knee joint was reconstructed using a CT image postprocessing workstation, and the medial wall of the femoral lateral condyle was reconstructed, as well as the reconstructed single tract of bony canal, tibial plateau, and bony canal. Then, the Lysholm score was used to score the cases, with scores greater than 75 as the excellent group and below 75 as the poor group. The relative positions of the central points of the femoral and tibial canals were marked and measured. The results were as follows: 3D-CT reconstruction could clearly reflect the situation after anterior cruciate ligament reconstruction. In clinic, it is used to evaluate the relationship between bone tunnel location and graft shape so as to guide the surgeon to improve the operation.

scholarly journals Limited evidence for graft selection in pediatric ACL reconstruction: a narrative review

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Gianni De Petrillo ◽  
Thierry Pauyo ◽  
Corinna C. Franklin ◽  
Ross S. Chafetz ◽  
Marie-Lyne Nault ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Sport Participation ◽  
Cruciate Ligament ◽  
Ligament Injury ◽  
Iliotibial Band ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate ◽  
Graft Selection

AbstractAnterior cruciate ligament reconstruction is the preferred treatment to anterior cruciate ligament injury. With the increase in anterior cruciate ligament injuries in both adults and skeletally immature patients comes the need for individualized anterior cruciate ligament reconstruction graft selection whether it is the type of graft (auto vs. allograft) or the harvesting site (hamstrings, iliotibial band, quadriceps, patella). Several factors need to be considered preoperatively in order to optimize the patients’ recovery and restore anterior cruciate ligament strength and function. These include age and bone maturity, preoperative knee flexor/extensor strength, sport participation, patient’s needs and anatomical characteristics. This paper aims at bringing evidence supporting the use of a personalized approach in graft selection for faster and more efficient return to sport and propose a theoretical framework to support the approach.

Isolated Anterior Cruciate Ligament Reconstruction in Patients with Chronic Anterior Cruciate Ligament Insufficiency Combined with Grade II Valgus Laxity

2007 ◽  
Vol 36 (2) ◽  
pp. 333-339 ◽  
Author(s):  
Kenji Hara ◽  
Sadao Niga ◽  
Hiroo Ikeda ◽  
Sadahiro Cho ◽  
Takeshi Muneta
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Anterior Cruciate Ligament Injury ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Final Evaluation ◽  
Ligament Injury ◽  
Cruciate Ligament Reconstruction ◽  
Grade Ii ◽  
Anterior Cruciate

Background There is no consensus about whether isolated anterior cruciate ligament reconstruction using multistrand hamstring tendon with nonoperative treatment for chronic medial collateral ligament injury is sufficient. Purpose To assess clinical outcome for patients with chronic anterior cruciate ligament injury and accompanying grade II valgus laxity who received medial hamstring anterior cruciate ligament reconstruction alone. Results were compared with those of patients with isolated chronic anterior cruciate ligament injury without valgus laxity. Study Design Cohort study; Level of evidence, 2. Methods Two hundred eighty-nine patients with isolated anterior cruciate ligament injury were compared with 53 patients with accompanying valgus laxity (minimum follow-up, 24 months). The following parameters were compared between the 2 groups at the last follow-up: range of motion, KT-1000 arthrometer value, pivot-shift test result, Lysholm knee scale, knee extensor muscle strength, return to sporting activities, subjective recovery, and International Knee Documentation Committee grade. Differences in clinical outcome were evaluated between those with preoperative International Knee Documentation Committee grade B and grade C and between those with grade A and grade B or C at final evaluation. Results Postoperative KT-1000 arthrometer value averaged 1.2 mm for those with isolated anterior cruciate ligament injury and 1.6 mm for those with accompanying valgus laxity (not significant, P = .281). There was no significant difference between these 2 groups regarding the other items. In patients with preoperative valgus laxity, KT-1000 arthrometer values at final evaluation between patients with preoperative grade B and C were not significantly different. The value for subjects with grade A at final evaluation was 1.3 mm and for those with grade B or C at final evaluation was 2.7 mm ( P = .065). Conclusion There was no clinically significant difference regarding outcome of anterior cruciate ligament multistrand hamstring reconstruction alone for 90% of patients with grade II valgus laxity who regained medial stability with nonoperative management compared with those who underwent the same anterior cruciate ligament reconstruction for an isolated anterior cruciate ligament tear.

Longitudinal Effects of Anterior Cruciate Ligament Injury and Patellar Tendon Autograft Reconstruction on Neuromuscular Performance

2000 ◽  
Vol 28 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Edward M. Wojtys ◽  
Laura J. Huston
Keyword(s):  
Anterior Cruciate Ligament ◽  
Muscle Strength ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Anterior Cruciate Ligament Injury ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Neuromuscular Function ◽  
Ligament Injury ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

We examined persons after anterior cruciate ligament injury and for 1.5 years after anterior cruciate ligament reconstruction to analyze changes in anterior knee laxity, lower extremity muscle strength, endurance, and several parameters of neuromuscular function. Sixteen men and nine women (average age, 23.8 years) were evaluated preoperatively, then underwent intraarticular autogenous patellar tendon anterior cruciate ligament reconstruction by the same surgeon and were evaluated at 6, 12, and 18 months postoperatively. Muscle strength was measured isokinetically and neuromuscular function was quantified with simultaneous anterior tibial translation and surface electromyography tests. Forty subjects (26 men and 14 women; average age, 23.5 years) with no known knee abnormalities served as the control group. Subjective questionnaire results showed that by 18 months postoperatively, 20 subjects (80%) believed they had regained their preoperative levels of function. Unfortunately, muscle function in most subjects had not returned to normal. At 12 to 18 months postoperatively, when knee rehabilitation was terminated, significant deficiencies in muscle performance persisted in most patients. Interestingly, in this group of stable knees, quadriceps and hamstring muscle reaction times appeared to be the best objective indicators of subjective knee function.

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