Hamstring anterior cruciate ligament (ACL) reconstructions fixed inside both bone tunnels have a shorter initial working length, and thus should be stiffer than those fixed outside both bone tunnels. We used meta-analysis to compare 4-stranded hamstring ACL reconstructions using the 2 fixation methods with reconstructions using patellar tendon autografts. A Medline database search of English-language articles published through June 2004 yielded 36 studies that met the inclusion criteria: 5 intratunnel fixation studies (569 patients), 10 extra-tunnel fixation studies (604 patients), and 24 patellar tendon studies (1592 patients). Three studies included both patellar tendon and hamstring reconstructions. Demographically, all 3 groups were similar. There was no significant difference in the percentage of knees restored to normal instrumented laxity measurements between the 3 groups, nor was there a difference in graft failure rate. Patient satisfaction and return to preinjury activity rates were similar between the intratunnel fixation and patellar tendon groups and were significantly lower for the extra-tunnel fixation group. Good International Knee Documentation Committee scores did not correlate with good patient satisfaction or return to preinjury activity.
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http://dx.doi.org/10.1055/s-0030-1247736 | DOI Listing |
Arthroscopy
January 2025
Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China; Orthopaedics Clinical Medical Research Center of Gansu Province, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China; Intelligent Orthopaedic Industry Technology Center of Gansu Province, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China. Electronic address:
Purpose: To review patients with recurrent patellar dislocation surgically treated with robot-assisted medial patellofemoral ligament (MPFL) reconstruction compared with patients who underwent surgery using the traditional freehand technique.
Methods: A retrospective cohort study was performed to identify patients who underwent MPFL reconstruction from January 2020 to December 2023 in our hospital. The inclusion criteria were: patients aged from 15 to 50 years; patellar dislocation occurred two or more times; a Merchant view or computed tomography (CT) scan indicating patellofemoral joint malalignment, external patellar inclination, or lateral patellar dislocation; underwent MPFL reconstruction via robot-assisted or traditional freehand technique; complete medical records and imaging data before and after surgery; a minimum of 1 year of postoperative follow-up.
Int J Environ Res Public Health
December 2024
Department of Biomolecular Sciences, Section of Exercise and Health Sciences, University of Urbino Carlo Bo, 61029 Urbino, Italy.
The use of dietary supplements is widespread in sports and fitness, with many products containing multiple ingredients. Among supplements often consumed to support musculotendinous health, collagen hydrolysate (CH) has gained popularity for its potential in improving joint comfort and function. This single-blind quasi-experimental study investigated the effects of a three-month oral supplementation with a specific CH-based product, Chondrovita FIT (Bone Srl, Rome, Italy), on tendon structure in elite Italian skaters.
View Article and Find Full Text PDFJBJS Case Connect
January 2025
Department of Orthopedic Surgery, Shariati Hospital and School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
Case: In this article, we present 2 cases of neglected patellar tendon rupture. One was treated using an Achilles tendon allograft, and the other with a patellar tendon-bone allograft. Both methods allowed for early range of motion and resulted in good functional outcomes with a 1-year follow-up period.
View Article and Find Full Text PDFBiomimetics (Basel)
January 2025
Department of Orthopedic Surgery, Wakamatsu Hospital of University of Occupational and Environmental and Health, 1-17-1, Hamamachi, Wakamatsu, Kitakyushu-city 808-1264, Fukuoka, Japan.
While several studies have reported short-term clinical outcomes after medial patellofemoral ligament (MPFL) repair with suture tape augmentation, there is still a dearth of knowledge regarding midterm clinical outcomes. This study aimed to evaluate the midterm clinical outcomes of MPFL repair with suture tape augmentation in patients with patellar dislocation. We retrospectively reviewed the clinical records of patients who underwent MPFL repair with suture tape augmentation for at least one episode of patellar dislocation between 2015 and 2020.
View Article and Find Full Text PDFBioengineering (Basel)
December 2024
Department of Radiology, University of California San Diego, San Diego, CA 92037, USA.
It is known that ultrashort echo time (UTE) magnetic resonance imaging (MRI) sequences can detect signals from water protons but not collagen protons in short T2 species such as cortical bone and tendons. However, whether collagen protons are visible with the zero echo time (ZTE) MRI sequence is still unclear. In this study, we investigated the potential of the ZTE MRI sequence on a clinical 3T scanner to directly image collagen protons via DO exchange and freeze-drying experiments.
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