Lower Extremity Injury Patterns in Elite Ballet Dancers: Ultrasound/MRI Imaging Features and an Institutional Overview of Therapeutic Ultrasound Guided Percutaneous Interventions

Objectives The aim of this case-control study was to identify early-life risk factors associated with the occurrence of owner-reported mobility changes in 6-year-old cats by examining prospective data from a longitudinal cohort study of pet cats, the Bristol Cats study. Methods Data on potential risk factors were obtained from seven sequential questionnaires completed between the ages of 2–4 months and 5 years. Mobility-related questions from the study questionnaire distributed at the age of 6 years were used to calculate each cat’s mobility score. Cats with mobility scores of ⩾2 and 0 were allocated to the case and control groups, respectively, and the cat’s status was the outcome variable. Results Of the 799 cats included for analysis, 238 (29.8%) had owner-reported mobility changes. Binomial logistic regression using backwards elimination identified four risk factors for owner-reported mobility changes at 6 years of age: entire neuter status at 6 months of age (odds ratio [OR] 1.97; 95% confidence interval [CI] 1.26–3.07), sustained trauma before 6 years of age (OR 1.85; 95% CI 1.30–2.60), outdoor access at 6 years of age (OR 1.67; 95% CI 0.96–2.90) and overweight/obese status at 6 years of age (OR 1.62; 95% CI 1.13–2.33). Conclusions and relevance Risk factor analysis demonstrated that obesity, outdoor access and a history of trauma may predispose cats to developing owner-reported mobility changes associated with degenerative joint disease, whereas neutering before 6 months of age appears to decrease that risk.

show abstract

“…Indeed, repetitive microtrauma has been shown to result in altered biomechanics that leads to DJD in dogs, 69 horses 70 and humans. 71 , 72 …”

Section: Discussionmentioning

confidence: 99%

Associations between early neutering, obesity, outdoor access, trauma and feline degenerative joint disease

Maniaki

Murrell

Langley‐Hobbs

et al. 2021

Journal of Feline Medicine and Surgery

View full text Add to dashboard Cite

show abstract

“… Midportion tendinopathy with a partial tear ++ + MRI is superior in differentiating pure tendinopathy from tendinopathy with partial ruptures [ 16 , 22 ]. Insertional tendinopathy ++ ++ Ultrasound and MRI play complementary roles [ 23 , 24 ]. Acute postoperative changes ++ + MRI and ultrasound may be used [ 25 , 26 ].…”

Section: Mri Vs Ultrasound In the Assessment Of The Achilles Tendonmentioning

confidence: 99%

MRI of the Achilles tendon—A comprehensive pictorial review. Part one

Szaro

Nilsson-Helander

Carmont

2021

European Journal of Radiology Open

View full text Add to dashboard Cite

Highlights Presence of normal septation between subtendons may mimic an intrasubstance tear. MRI is superior to ultrasound in detection of partial tears. Ultrasound is as useful as MRI in detection of tendinopathy and full-thickness tears. Kager's fat pad is involved in infection more than in postoperative changes. The Achilles tendon xanthoma has a higher signal on T1- and T2-weighted sequences.

show abstract

“…[1][2][3][4][5][6] A variety of other etiologies may result in bone marrow edema-like lesions, including traumatic, inflammatory, infectious, vascular, neoplastic, metabolic, developmental, and iatrogenic processes. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] While a myriad of foot and ankle injuries in dancers are well-documented, [23][24][25][26][27] bone marrow signal variations and patterns in dancers are incompletely described 7,28 ; Peace et al 28 noted generalized patchy edema in the hindfoot of 40% of 23 ballet dancers with posterior ankle impingement syndrome. In a study by Elias et al, 7 patchy bone marrow edema in the talus was seen in 75% of 11 professional ballet dancers and was reported to be associated with pain.…”

Section: Introductionmentioning

confidence: 99%

Spotty Bone Marrow: A Frequent MRI Finding in the Feet of Ballet Dancers

Gorelik¹,

Casagranda²,

Colucci³

et al. 2022

j dance med sci

View full text Add to dashboard Cite

Introduction: Bone marrow signal abnormalities on magnetic resonance imaging (MRI) are common in athletes. However, few studies evaluate the MRI appearance of bone marrow in the feet of ballet dancers. Our study aims to describe the “spotty bone marrow” (SBM) pattern in the tarsal bones of a cohort of ballet dancers, establishing its prevalence, distribution, potential associations, and evolution. Methods: Eighty-six MRIs of 68 ankles in 56 ballet dancers were retrospectively reviewed for marrow signal alterations, which were classified as focal or SBM (defined as patchy fluid-sensitive signal hyperintensity spanning more than one location or tarsal bone). When SBM involved the talus, its anatomic distribution in the bone and morphologic pattern were recorded. Additional osseous and soft tissue findings were documented. For subjects with more than one MRI of the same ankle, the SBM’s evolution was monitored.Results: Spotty bone marrow was identified in 44 ankles (65%). Spotty bone marrow was isolated to the talus (44%), present in all tarsal bones (25%), or distributed between the talus and one to three other tarsal bones (31%). In the talus, The SBM involved the entire bone (65%), the neck and body (31%), or the head and neck (4%). The SBM most commonly showed a random morphologic pattern (87%) but occasionally showed a peripheral predominance (13%). There was no statistically significant difference in the prevalence of other pathologies in ankles with and without SBM. In eight ankles with a follow-up MRI, the SBM worsened in one, remained stable in two, and improved in five ankles. None progressed to a stress fracture. Conclusion: Spotty bone marrow is an MRI finding frequently encountered in ballet dancers. It is usually self-limiting and should not be misinterpreted as a more aggressive pathology.

show abstract

Lower Extremity Injury Patterns in Elite Ballet Dancers: Ultrasound/MRI Imaging Features and an Institutional Overview of Therapeutic Ultrasound Guided Percutaneous Interventions

Cited by 19 publications

References 111 publications

Associations between early neutering, obesity, outdoor access, trauma and feline degenerative joint disease

Associations between early neutering, obesity, outdoor access, trauma and feline degenerative joint disease

MRI of the Achilles tendon—A comprehensive pictorial review. Part one

Spotty Bone Marrow: A Frequent MRI Finding in the Feet of Ballet Dancers

Contact Info

Product

Resources

About