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Jungmann PM, Schaeffeler C. Bone Stress Injuries at the Ankle and Foot. Semin Musculoskelet Radiol 2023; 27:283-292. [PMID: 37230128 DOI: 10.1055/s-0043-1766098] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bone stress injuries (BSIs) are a frequent finding in athletes, particularly of the foot and ankle. A BSI is caused by recurring microtrauma to the cortical or trabecular bone exceeding the repair capacity of normal bone. The most frequent fractures at the ankle are low risk, characterized by a low risk for nonunion. These include the posteromedial tibia, the calcaneus, and the metatarsal diaphysis. High-risk stress fractures have a higher risk for nonunion and need more aggressive treatment. Examples are the medial malleolus, navicular bone, and the base of the second and fifth metatarsal bone.Imaging features depend on the primary involvement of cortical versus trabecular bone. Conventional radiographs may remain normal up to 2 to 3 weeks. For cortical bone, early signs of BSIs are a periosteal reaction or the "gray cortex sign," followed by cortical thickening and fracture line depiction. In trabecular bone, a sclerotic dense line may be seen. Magnetic resonance imaging enables early detection of BSIs and can differentiate between a stress reaction and a fracture. We review typical anamnestic/clinical findings, epidemiology and risk factors, imaging characteristics, and findings at typical locations of BSIs at the foot and ankle that may help guide treatment strategy and patient recovery.
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Affiliation(s)
- Pia M Jungmann
- Musculoskeletal Imaging, Department of Radiology, Kantonsspital Graubünden, Chur, Switzerland
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany
| | - Christoph Schaeffeler
- Musculoskeletal Imaging, Department of Radiology, Kantonsspital Graubünden, Chur, Switzerland
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2
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Abstract
Stress fractures are a common injury that present in athletes because of the high intensity and repetitive nature of many sports. These injuries require a high index of suspicion in the treating clinician to allow for timely management. Though most low-risk fractures heal well with conservative management, high-risk stress fractures as well as any fracture in the elite athlete may warrant surgical intervention as well as an augmented treatment and rehabilitation regimen.
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Affiliation(s)
- Eric Shi
- Sutter East Bay Medical Foundation, 20101 Lake Chabot Road, Castro Valley, CA 94546, USA.
| | - Lawrence M Oloff
- Sutter Health Palo Alto Medical Foundation, Callan Boulevard, Daly City, CA 94015, USA
| | - Nicholas W Todd
- Sutter Health Palo Alto Medical Foundation, 701 East El Camino Real, Mountain View, CA 94040, USA
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Choudhry H, Singleton A, Candella K, Stegelmann S, Falbo R, Carmody C, Levine J. Return to play and performance in the National Basketball Association after undergoing operative or nonoperative treatment for foot fracture. J Orthop 2022; 34:160-165. [PMID: 36090784 PMCID: PMC9450068 DOI: 10.1016/j.jor.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/02/2022] [Indexed: 01/10/2023] Open
Abstract
Background The incidence of distal lower extremity fractures in National Basketball Association (NBA) athletes continues to increase. There is a paucity of data regarding return-to-play (RTP) rates and performance after sustaining foot fractures in these athletes. The purpose of this study is to quantify RTP rates and performance in NBA players after sustaining a foot fracture. Methods Sixty-two NBA athletes suffered foot fractures between 2005 and 2021 according to publicly accessible online data. Each athlete was matched to a control player based on age at start of career, age at index injury year, body mass index (BMI), and position played. Performance statistics from 3 seasons prior and 3 seasons following the index injury season were recorded. Results We found that players who suffered foot fracture injuries are expected to make a full recovery and reach their previous level of performance within three years. 100% of players treated nonoperatively returned to play; meanwhile only 90% of players who were treated operatively returned to play. This difference is statistically significant. Conclusion NBA athletes have a high RTP rate after sustaining a foot fracture. Players may experience an initial decrease in playing time and performance when returning to play, however, these variables were found to return to baseline over time. After three seasons, player statistics returned to baseline in mostly every category, including player efficiency rating (PER). We found that players are expected to make a full recovery and return to their previous level of performance, regardless of whether they were treated operatively or not. Players treated nonoperatively returned to play at a rate of 100% meanwhile those treated operatively returned at a rate of 90%. Therefore, it is our recommendation that players opt for nonoperative treatment when possible.
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Affiliation(s)
- Hassan Choudhry
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
| | - Amy Singleton
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
| | - Kristofer Candella
- Touro College of Osteopathic Medicine, 230 W 125 St 3rd Floor, New York, NY, 10027, USA
| | - Samuel Stegelmann
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
| | - Ryan Falbo
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
| | - Clayton Carmody
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
| | - Jason Levine
- Mercy Health St., Vincent Medical Center, Department of Orthopedics, 2409 Cherry Street, Suite #10, Toledo, OH, 43608, USA
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Rizzi AM, Baker HP, Lee CS, Athiviraham A. Lower Extremity Stress Fractures in the National Basketball Association, 2013-2014 Through 2018-2019. Orthop J Sports Med 2022; 10:23259671221126485. [PMID: 36225389 PMCID: PMC9549108 DOI: 10.1177/23259671221126485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/27/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Players in the National Basketball Association (NBA) are at risk for lower extremity stress fractures, partly because of the sport's high-intensity demand on the lower body. PURPOSE To provide insight on the identification and management of potential risk factors associated with lower extremity stress fractures in NBA athletes. STUDY DESIGN Case series; Level of evidence, 4. METHODS A retrospective study was conducted using the NBA electronic medical record database for all players who were on an NBA roster for ≥1 game from the 2013-2014 through 2018-2019 seasons. Player characteristics, games missed, and treatment methodology were independently analyzed. Results were presented as incidence per 1000 player-games. RESULTS There were 22 stress fractures identified in 20 NBA players over the course of 6 years, with an average of 3.67 stress fractures per year and an incidence of 0.12 stress fractures per 1000 player-games. Most stress fractures occurred in the foot (17/22), and 45% (10/22) of stress fractures were treated surgically, with the most common site of operation being the navicular. On average, approximately 37 games and 243 days were missed per stress fracture injury. There was no significant difference in time to return to play between high-risk stress fractures treated operatively versus nonoperatively (269.2 vs 243.8 days; P = .82). CONCLUSION The overall incidence of stress fractures in NBA players was 0.12 per 1000 player-games, and a high percentage of players returned to NBA activity after the injury. There was a relatively even distribution between high-risk stress fractures treated operatively and nonoperatively. When comparing high-risk stress fractures treated operatively to ones treated nonoperatively, no significant difference in average time to return to play in the NBA was found.
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Affiliation(s)
- Andrew M. Rizzi
- Department of Orthopaedic Surgery, University of Chicago Medicine,
Chicago, Illinois, USA.,Andrew M. Rizzi, MD, Department of Orthopaedic Surgery,
University of Chicago Medicine, 5841 S. Maryland Avenue, Chicago, IL 60637, USA
()
| | - Hayden P. Baker
- Department of Orthopaedic Surgery, University of Chicago Medicine,
Chicago, Illinois, USA
| | - Cody S. Lee
- Department of Orthopaedic Surgery, University of Chicago Medicine,
Chicago, Illinois, USA
| | - Aravind Athiviraham
- Department of Orthopaedic Surgery, University of Chicago Medicine,
Chicago, Illinois, USA
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Epigenetic Alterations in Sports-Related Injuries. Genes (Basel) 2022; 13:genes13081471. [PMID: 36011382 PMCID: PMC9408207 DOI: 10.3390/genes13081471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
It is a well-known fact that physical activity benefits people of all age groups. However, highly intensive training, maladaptation, improper equipment, and lack of sufficient rest lead to contusions and sports-related injuries. From the perspectives of sports professionals and those performing regular–amateur sports activities, it is important to maintain proper levels of training, without encountering frequent injuries. The bodily responses to physical stress and intensive physical activity are detected on many levels. Epigenetic modifications, including DNA methylation, histone protein methylation, acetylation, and miRNA expression occur in response to environmental changes and play fundamental roles in the regulation of cellular activities. In the current review, we summarise the available knowledge on epigenetic alterations present in tissues and organs (e.g., muscles, the brain, tendons, and bones) as a consequence of sports-related injuries. Epigenetic mechanism observations have the potential to become useful tools in sports medicine, as predictors of approaching pathophysiological alterations and injury biomarkers that have already taken place.
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Lu C, Fan Y, Yu G, Chen H, Sinclair J, Fan Y. Asymptomatic foot and ankle structural injuries: a 3D imaging and finite element analysis of elite fencers. BMC Sports Sci Med Rehabil 2022; 14:50. [PMID: 35346343 PMCID: PMC8962477 DOI: 10.1186/s13102-022-00444-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 03/23/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Fencing is a highly asymmetrical combat sport, that imposes high mechanical demands over repeated exposures on the musculoskeletal structures, a primary cause of injuries in fencers. However, there are limited epidemiological studies on the structural injuries of the foot and ankle in fencers. This study aimed to investigate foot and ankle structural injuries, and explore how metatarsophalangeal joint structural changes may affect the mechanisms of foot and ankle injuries in asymptomatic fencers. METHODS 3D images of foot and ankle morphology using computed tomography were obtained from ten elite fencers. We then constructed finite element models of the first metatarsophalangeal joint in the foot of their trail legs. The validated models were used to simulate stress distribution changes from different ankle joint angles during lunging. RESULTS The findings showed that stress distribution changes at the medial and lateral sesamoid may have caused sesamoid fractures, and that habitual and concentrated stress on the metatarsal bones might have flattened the sesamoid groove. This process may damage the integrity of the first metatarsophalangeal joint, and consequently affect the efficiency of the windlass mechanism in fencers. During lunging, different ankle joint angles of the trail foot increased the total stress difference of the medial and lateral foot, and thus influenced the lunging quality and its stability. CONCLUSIONS Our findings revealed that the asymmetric nature of fencing might have caused asymptomatic foot and ankle structural injuries, and finite element analysis results indicated that this might increase the incidence of the serious injuries if unattended. Regular computed tomography examination should be introduced to monitor elite fencers' lower limb alterations, permitting unique angle adjustments in the trail foot without sacrificing technical or physiologic properties based on the exam results and reduce the lower limb injury risk.
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Affiliation(s)
- Congfei Lu
- Foot Research Laboratory, Key Laboratory of Sport and Health Science of Fujian Province, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350117, China
| | - Yuxuan Fan
- Foot Research Laboratory, Key Laboratory of Sport and Health Science of Fujian Province, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350117, China
| | - Genyu Yu
- Foot Research Laboratory, Key Laboratory of Sport and Health Science of Fujian Province, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350117, China
| | - Hua Chen
- Foot Research Laboratory, Key Laboratory of Sport and Health Science of Fujian Province, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350117, China
| | - Jonathan Sinclair
- Research Centre for Applied Sport, Physical Activity and Performance, School of Sport and Health Sciences, University of Central Lancashire, Lancashire, Preston, PR1 2HE, UK
| | - Yifang Fan
- Foot Research Laboratory, Key Laboratory of Sport and Health Science of Fujian Province, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350117, China.
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Kosola J, Maffulli N, Sinikumpu JJ, Pánics G, Niemi P, Orava S, Lempainen L. Calcaneal Bone Bruise After Surgery for Insertional Achilles Tendinopathy. Clin J Sport Med 2022; 32:e30-e34. [PMID: 33914495 DOI: 10.1097/jsm.0000000000000868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 05/13/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Excision of the posterosuperior corner of the calcaneus (EPCC) is routinely undertaken in athletes after failure of conservative management of insertional Achilles tendinopathy. Some patients can experience sharp calcaneal pain during postoperative rehabilitation, a sign of a calcaneal bone bruise (CBB). DESIGN Case series, level of evidence IV. SETTING University teaching hospital. PATIENTS This study reports 8 patients who developed postoperative CBB after having started impact training too early. INTERVENTION Patients in whom a diagnosis of CBB had been formulated were followed to return-to-play and resolution of bone edema by MRI. MAIN OUTCOME MEASURES Detection of CBB after EPCC. RESULTS After routine EPCC for insertional Achilles tendinopathy, 8 patients presented with sharp pain for a mean 7.1 weeks (median 6 weeks, range 5-11 weeks) before clinical suspicion of CBB. At that stage, MRI showed clear evidence of a bone bruise, with a diagnosis of CBB formulated at an average of 10.8 postoperative weeks (range 6-16 weeks). Calcaneal bone bruise resolved with modified symptom-free loading. Patients returned to play at average on 5.6 months (range 2-9 months) after the diagnosis of postoperative CBB. CONCLUSIONS We describe 8 athletes who developed painful CBB following routine EPCC for insertional Achilles tendinopathy after having increased their level of activities too soon after the index procedure. In these patients, the diagnosis of postoperative CBB can be formulated by MRI and more cautious rehabilitation implemented.
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Affiliation(s)
- Jussi Kosola
- Sports Trauma Research Unit, Hospital Mehiläinen NEO, Turku, Finland
| | - Nicola Maffulli
- Department of Musculoskeletal Disorders, University of Salerno School of Medicine, Surgery and Dentistry, Salerno, Italy
- Centre for Sports and Exercise Medicine, Queen Mary University of London, London, United Kingdom
- School of Pharmacy and Bioengineering, Keele University Faculty of Medicine, Stoke on Trent, United Kingdom
| | - Juha-Jaakko Sinikumpu
- Department of Children and Adolescents, PEDEGO Unit and MRC Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland ; and
| | - Gergely Pánics
- Department of Traumatology Uzsoki Hospital, Department of Orthopedics & Traumatology, Semmelweis University, Budapest, Hungary
| | - Pekka Niemi
- Sports Trauma Research Unit, Hospital Mehiläinen NEO, Turku, Finland
| | - Sakari Orava
- Sports Trauma Research Unit, Hospital Mehiläinen NEO, Turku, Finland
| | - Lasse Lempainen
- Sports Trauma Research Unit, Hospital Mehiläinen NEO, Turku, Finland
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Dewar C, Grindstaff TL, Farmer B, Sainsbury M, Gay S, Kroes W, Martin KD. EMG Activity With Use of a Hands-Free Single Crutch vs a Knee Scooter. FOOT & ANKLE ORTHOPAEDICS 2021; 6:24730114211060054. [PMID: 35097481 PMCID: PMC8664314 DOI: 10.1177/24730114211060054] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Foot and ankle injuries frequently require a period of nonweightbearing, resulting in muscle atrophy. Our previous study compared a hands-free single crutch (HFSC) to standard axillary crutches and found increased muscle recruitment and intensity while using the HFSC. Knee scooters are another commonly prescribed nonweightbearing device. The purpose of this study is to examine the electromyographic (EMG) differences between an HFSC and knee scooter, in conjunction with device preference and perceived exertion. METHODS A randomized crossover study was performed using 30 noninjured young adults. Wireless surface EMG electrodes were placed on the belly of the rectus femoris (RF), vastus lateralis (VL), lateral gastrocnemius (LG), and gluteus maximus (GM). Participants then ambulated along a 20-m walking area while 15 seconds of the gait cycle was recorded across 3 conditions: walking with a knee scooter, an HFSC, and with no assistive device. Mean muscle activity and peak EMG activity were recorded for each ambulatory modality. Immediately following testing, patient exertion and device preference was recorded. RESULTS The RF, LG, and GM showed increased peak EMG activity percentage, and the LG showed increased mean muscle activity while using the HFSC compared with the knee scooter. When comparing the knee scooter and HFSC to walking, both showed increased muscle activity in the RF, VL, and LG but no difference in the GM. There was no statistical difference in participant preference, whereas the HFSC had a statistically significant higher perceived exertion than the knee scooter (P < .001). CONCLUSION In this group of young, healthy noninjured volunteers, the HFSC demonstrated increased peak EMG activity in most muscle groups tested compared with the knee scooter. LEVEL OF EVIDENCE Level II, prospective comparative study.
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Affiliation(s)
- Cuyler Dewar
- School of Medicine, Creighton University, Omaha, NE, USA
| | | | - Brooke Farmer
- Department of Physical Therapy, Creighton University, Omaha, NE, USA
| | | | - Sam Gay
- School of Medicine, Creighton University, Omaha, NE, USA
| | - Weston Kroes
- School of Medicine, Creighton University, Omaha, NE, USA
| | - Kevin D. Martin
- Wexner Medical Center, Ohio State University, Columbus, OH, USA
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Kardouni JR, McKinnon CJ, Taylor KM, Hughes JM. Timing of stress fracture in soldiers during the first 6 career months: a retrospective cohort study. J Athl Train 2021; 56:465003. [PMID: 33975344 PMCID: PMC8675322 DOI: 10.4085/1062-6050-0380.19] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT Stress fractures (SF) are injuries that can result from beginning new or higher volume physical training regimens. The pattern of clinical presentation of SF over time after individuals start a new or more demanding physical training regimen is not well defined in medical literature. OBJECTIVE Report trends in the clinical presentation of stress fractures over the first six month of soldiers' time in the service. DESIGN Retrospective Cohort study Setting: This study was conducted using medical encounter and personnel data from U.S. Army soldiers during the first 6 months of their career. PARTICIPANTS U.S. Army soldiers beginning their careers from 2005-2014 (N=701,027). DATA COLLECTION AND ANALYSIS Weekly SF numbers and incidence were calculated overall, as well as by sex, over the first 6 months of military service. RESULTS SF diagnoses (N=14,155) increased steeply in weeks 3 and 4, with a peak in the overall incidence of SF diagnoses occurring during weeks 5-8. Although clinical incidence of stress fracture generally decreased beyond 8 weeks, incident lower extremity stress fractures continued to present for over 20 weeks. The hazard ratio (HR) for SF among women compared to men was 4.14 (95% CI = [4.01, 4.27]). CONCLUSIONS Across the 6-month study period, women showed over 4 times greater hazard for stress fracture. The results also suggest that health care providers should be particularly vigilant for stress fractures within 3 weeks after the beginning of a new or higher intensity exercise regimen. The incidence of SF may continue to climb for several weeks. Even as stress fracture incidence declines, it should be noted that these injuries may also continue to appear clinically even several months after a change in activity or training.
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Affiliation(s)
- Joseph R Kardouni
- 1U.S. Army Forces Command, Fort Bragg, NC, 28310
- 2U.S. Army Research Institute of Environmental Medicine, Military Performance Division, Natick, MA 01760
- E-mail correspondence may be directed to the authors at the following addresses: Joseph R. Kardouni - , Julie M. Hughes - , Craig J. McKinnon - , Kathryn M. Taylor -
| | - Craig J McKinnon
- 2U.S. Army Research Institute of Environmental Medicine, Military Performance Division, Natick, MA 01760
- E-mail correspondence may be directed to the authors at the following addresses: Joseph R. Kardouni - , Julie M. Hughes - , Craig J. McKinnon - , Kathryn M. Taylor -
| | - Kathryn M Taylor
- 2U.S. Army Research Institute of Environmental Medicine, Military Performance Division, Natick, MA 01760
- E-mail correspondence may be directed to the authors at the following addresses: Joseph R. Kardouni - , Julie M. Hughes - , Craig J. McKinnon - , Kathryn M. Taylor -
| | - Julie M Hughes
- 2U.S. Army Research Institute of Environmental Medicine, Military Performance Division, Natick, MA 01760
- E-mail correspondence may be directed to the authors at the following addresses: Joseph R. Kardouni - , Julie M. Hughes - , Craig J. McKinnon - , Kathryn M. Taylor -
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Sun Y, Ge J, Tang W, Hong H, Liu D, Lin J. Hsa_circ_0045714 induced by eupatilin has a potential to promote fracture healing. Biofactors 2021; 47:376-385. [PMID: 33496034 DOI: 10.1002/biof.1707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/25/2020] [Indexed: 12/22/2022]
Abstract
It is thought that maintaining preosteoblast viability is constructive to fracture healing. Here, we explored the effects of eupatilin on preosteoblast and addressed the mechanism associated with hsa_circ_0045714. Blood specimens were collected from 32 patients with hand fracture or calcaneus fracture. MC3T3-E1 cells were treated with eupatilin. Small interfering-RNA was transfected into MC3T3-E1 cells. The ability of MC3T3-E1 cells to survive, proliferate, migrate, and express fracture-associated proteins was examined by 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di- phenytetrazoliumromide (MTT), 5-bromodeoxyuridine (BrdU), 24-Transwell, Quantitative reverse transcription polymerase chain reaction (qRT-PCR), and Western blot. Hsa_circ_0045714 was detected by qRT-PCR. NF-κB and PI3K/AKT were evaluated by Western blot. Eupatilin enhanced the survival, proliferation, and migration of MC3T3-E1 cells. Cyclin D1, cyclin E, collagen II, aggrecan, and sulfated glycosaminoglycan (sGAG) were upregulated, while MMP-13 was downregulated in eupatilin-treated cells. Hsa_circ_0045714 was increased in patients with hand and calcaneus fractures with the time-lapse of surgical operation. In eupatilin-treated cells, Hsa_circ_0045714 was also elevated. However, the beneficial effects of eupatilin were weakened in hsa_circ_0045714-deficient cells. Molecularly, eupatilin-induced blockage of NF-κB and activation of PI3K/AKT were abrogated in hsa_circ_0045714-silenced cells. Our results confirmed the beneficial effects of eupatilin in preosteoblast, indicating eupatilin was a promising candidate for fracture healing.
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Affiliation(s)
- Yan Sun
- The First Ward of Trauma Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
| | - Junbo Ge
- The First Ward of Trauma Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
| | - Weiwei Tang
- Department of Tramatic Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
| | - Huanyu Hong
- The First Ward of Trauma Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
| | - Dong Liu
- Department of Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
| | - Jiangtao Lin
- The First Ward of Trauma Orthopedics, Yantaishan Hospital, Yantai, Shandong, China
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11
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Knechtle B, Jastrzębski Z, Hill L, Nikolaidis PT. Vitamin D and Stress Fractures in Sport: Preventive and Therapeutic Measures-A Narrative Review. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:223. [PMID: 33804459 PMCID: PMC7999420 DOI: 10.3390/medicina57030223] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 01/13/2023]
Abstract
There are numerous risk factors for stress fractures that have been identified in literature. Among different risk factors, a prolonged lack of vitamin D (25(OH)D) can lead to stress fractures in athletes since 25(OH)D insufficiency is associated with an increased incidence of a fracture. A 25(OH)D value of <75.8 nmol/L is a risk factor for a stress fracture. 25(OH)D deficiency is, however, only one of several potential risk factors. Well-documented risk factors for a stress fracture include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, 25(OH)D deficiency, iron deficiency, menstrual disturbances, and inadequate intake of 25(OH)D and/or calcium. Stress fractures are not uncommon in athletes and affect around 20% of all competitors. Most athletes with a stress fracture are under 25 years of age. Stress fractures can affect every sporty person, from weekend athletes to top athletes. Stress fractures are common in certain sports disciplines such as basketball, baseball, athletics, rowing, soccer, aerobics, and classical ballet. The lower extremity is increasingly affected for stress fractures with the locations of the tibia, metatarsalia and pelvis. Regarding prevention and therapy, 25(OH)D seems to play an important role. Athletes should have an evaluation of 25(OH)D -dependent calcium homeostasis based on laboratory tests of 25-OH-D3, calcium, creatinine, and parathyroid hormone. In case of a deficiency of 25(OH)D, normal blood levels of ≥30 ng/mL may be restored by optimizing the athlete's lifestyle and, if appropriate, an oral substitution of 25(OH)D. Very recent studies suggested that the prevalence of stress fractures decreased when athletes are supplemented daily with 800 IU 25(OH)D and 2000 mg calcium. Recommendations of daily 25(OH)D intake may go up to 2000 IU of 25(OH)D per day.
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Affiliation(s)
- Beat Knechtle
- Medbase St. Gallen Am Vadianplatz, 9000 St. Gallen, Switzerland
- Institute of Primary Care, University Hospital Zurich, University of Zurich, Pestalozzistrasse 24, 8091 Zürich, Switzerland
| | - Zbigniew Jastrzębski
- Department of Health and Life Sciences, Gdansk University of Physical Education and Sport, 80-336 Gdańsk, Poland;
| | - Lee Hill
- Division of Gastroenterology & Nutrition, Department of Pediatrics, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada;
| | - Pantelis T. Nikolaidis
- Exercise Physiology Laboratory, 18450 Nikaia, Greece;
- School of Health and Caring Sciences, University of West Attica, 12243 Athens, Greece
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12
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Comparison of plantar pressure profile of young adults during training on elliptical devices and overground walking: A pilot study. Foot (Edinb) 2020; 45:101716. [PMID: 33039905 DOI: 10.1016/j.foot.2020.101716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/23/2020] [Accepted: 07/03/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND Elliptical training may offer advantages over other cardiorespiratory exercises for those requiring podiatric care, since its constant double-limb support diminishes recurring high-impact plantar forces while allowing exercise in a functional, upright posture. Unknown is the impact of distinct elliptical models, that can alter user's body mechanics, on potential variations in plantar pressure patterns. PURPOSE To compare plantar pressure variables while exercising on four ellipticals and walking. METHODS For this cross-sectional pilot study, plantar pressure data were recorded from ten young adults while exercising on four ellipticals (True, Octane, Life Fitness, SportsArt) and walking overground. One-way repeated measures ANOVA identified differences in heel, arch, and forefoot maximum force (MF), peak pressure (PP), and pressure-time integral (PTI). RESULTS MF was lower under the heel when exercising on all ellipticals compared with walking, with further differences detected between models. PP was lower on all three foot regions when exercising on all ellipticals compared with walking, except Octane under the arch, with differences detected between ellipticals under the heel. PTI was lower under the heel and arch when exercising on some of the ellipticals compared with walking, with differences again detected under the heel between models. CONCLUSION Plantar pressures were lower when exercising on the ellipticals compared with walking for most variables. Caution is recommended to which elliptical could be incorporated into therapeutic programs given that differences among models were detected under the heel.
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Khan M, Madden K, Burrus MT, Rogowski JP, Stotts J, Samani MJ, Sikka R, Bedi A. Epidemiology and Impact on Performance of Lower Extremity Stress Injuries in Professional Basketball Players. Sports Health 2017; 10:169-174. [PMID: 29106811 PMCID: PMC5857731 DOI: 10.1177/1941738117738988] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Professional basketball players in the National Basketball Association (NBA) subject their lower extremities to significant repetitive loading during both regular-season and off-season training. Little is known about the incidence of lower extremity bony stress injuries and their impact on return to play and performance in these athletes. Hypothesis: Stress injuries of the lower extremity will have significant impact on performance. Study Design: Case series. Level of Evidence: Level 4. Methods: All bony stress injuries from 2005 to 2015 were identified from the NBA. Number of games missed due to injury and performance statistics were collected from 2 years prior to injury to 2 years after the injury. A linear regression analysis was performed to determine the impact of injury for players who returned to sport. Results: A total of 76 lower extremity bony stress injuries involving 75 NBA players (mean age, 25.4 ± 4.1 years) were identified. Fifty-five percent (42/76) involved the foot, and most injuries occurred during the regular season (82.9%, 63/76), with half occurring within the first 6 weeks. Among players who sustained a fifth metatarsal stress fracture, 42.9% were unable to return to professional play. Players who sustained stress injuries had reduced play performance, specifically related to number of games played (P = 0.014) and number of steals per game (P = 0.004). Players who had surgery had significantly better performance at 2 years than those who were managed nonoperatively, independent of the type of injury (β = 4.561; 95% CI, 1.255-7.868). Conclusion: Lower extremity bony stress injuries may significantly affect both short- and long-term player performance and career length. Stress injuries result in decreased player performance, and surgical intervention results in improved performance metrics compared with those treated using conservative methods. Clinical Relevance: Stress injuries result in decreased player performance, and surgical intervention results in improved performance metrics.
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Affiliation(s)
- Moin Khan
- Moin Khan, MD, MSc, FRCSC, Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada ()
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