Musculoskeletal Health in Cats

Musculoskeletal health influences how cats move, jump, groom, hunt, climb, interact with their environment, and maintain independence throughout life. The feline musculoskeletal system consists of bones, joints, muscles, tendons, ligaments, cartilage, and associated connective tissues that work together to support mobility and physical function. As cats age, changes within these structures become increasingly common, making musculoskeletal health an important component of overall feline wellbeing.

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Among all musculoskeletal conditions affecting cats, osteoarthritis and degenerative joint disease receive the greatest research attention because of their high prevalence and impact on quality of life. However, musculoskeletal health extends beyond joint disease alone. Bone remodeling, skeletal integrity, muscle maintenance, body composition, and age-related changes in physical activity also contribute to long-term mobility and functional health. Recent research increasingly recognizes that joint, bone, and muscle health are interconnected rather than isolated systems.

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This pillar page provides an evidence-based overview of musculoskeletal health in cats and serves as the parent hub for related educational resources within the Feline Health Knowledge System.

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For a broader understanding of feline wellness and disease systems, visit the Feline Health Overview.

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What This Major Pillar Covers

 

Musculoskeletal health encompasses the structures responsible for movement, posture, support, and physical function. Within feline medicine, this field includes the study of:

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• Joint health and degenerative joint disease

• Bone structure and skeletal biology

• Muscle development, maintenance, and aging

• Mobility and physical function

• Orthopedic disorders

• Musculoskeletal pain

• Age-related changes affecting movement

 

Research in feline musculoskeletal medicine has expanded substantially over the past two decades. Historically, cats were believed to experience musculoskeletal disease less frequently than dogs. Improved diagnostic methods, advanced imaging technologies, behavioral assessments, and longitudinal studies have challenged this assumption. Evidence now shows that degenerative joint disease is common in aging cats and often goes unrecognized because clinical signs differ from those seen in other species (Dowgray & Comerford, 2020; Slingerland et al., 2011).

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This pillar introduces three major areas of feline musculoskeletal health:

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Joint Health & Osteoarthritis in Cats

 

Joint health focuses on cartilage, synovial structures, joint stability, mobility, and age-related degenerative changes. Osteoarthritis and degenerative joint disease represent the most extensively studied musculoskeletal conditions in cats.

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Learn more in our guide to Feline Joint Health & Degenerative Joint Disease.

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Bone Health, Skeletal Density & Remodeling in Cats 

 

Bone health examines skeletal development, bone remodeling, mineral metabolism, bone density, and structural integrity. Research increasingly explores the relationship between bone adaptation and joint disease.

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Learn more in our guide to Feline Bone Health & Skeletal Remodeling.

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Muscle Function, Aging & Feline Sarcopenia

 

Muscle function encompasses muscle anatomy, movement, strength, body composition, aging-related muscle loss, and mobility maintenance across the lifespan.

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Learn more in our guide to Feline Muscle Function, Sarcopenia & Mobility.

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Why This Area Matters

 

Musculoskeletal health has direct implications for mobility, independence, behavior, and quality of life.

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Healthy cats perform complex movements throughout daily life. Jumping onto elevated surfaces, navigating obstacles, climbing, grooming, stretching, and maintaining balance all require coordinated interaction between muscles, bones, and joints. When musculoskeletal structures become impaired, functional limitations often develop gradually.

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Research consistently shows that degenerative joint disease becomes increasingly common with age. In one cross-sectional study, 61% of cats aged six years and older had radiographic evidence of osteoarthritis affecting at least one joint, while nearly half showed involvement of multiple joints (Slingerland et al., 2011). Other imaging-based studies have reported even higher prevalence estimates depending on methodology and populations evaluated (Lascelles et al., 2010; Ley et al., 2025).

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Unlike dogs, cats frequently demonstrate subtle manifestations of musculoskeletal disease. Instead of obvious limping, affected cats may simply jump less often, groom less effectively, spend more time resting, become less sociable, or alter routine behaviors (Bennett & Morton, 2009; Maniaki et al., 2023).

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These behavioral changes can influence overall wellbeing. Chronic musculoskeletal pain has been associated with reduced mobility, altered activity patterns, diminished participation in normal behaviors, and decreased health-related quality of life (Yeowell et al., 2021; Dowgray & Comerford, 2020).

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Musculoskeletal health also intersects with other areas of feline medicine, including nutrition, aging, obesity, rehabilitation, pain assessment, and preventive healthcare.

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How This Major Pillar Relates to Feline Health

 

Musculoskeletal health does not function independently from other body systems.

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The skeletal system provides structural support and serves as a reservoir for essential minerals. Muscles generate force and movement while contributing to metabolic regulation. Joints facilitate mobility and enable interaction between skeletal components. Together, these systems support virtually every aspect of feline physical activity.

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As cats age, changes often occur simultaneously across multiple musculoskeletal tissues. Degenerative joint disease may develop alongside altered bone density, changes in body composition, reduced physical activity, and progressive muscle loss (Bonecka et al., 2024; Pye et al., 2025).

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Research increasingly supports viewing feline musculoskeletal health through an integrated framework rather than as isolated disorders. For example:

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• Obesity is associated with increased musculoskeletal burden and osteoarthritis risk (Teng et al., 2018; Ley et al., 2025).

• Age-related muscle loss may contribute to mobility decline independent of joint disease (Pye et al., 2025).

• Bone remodeling changes appear closely linked to osteoarthritis progression (Bonecka et al., 2024).

• Reduced activity can affect both muscular conditioning and joint function over time (Yamazaki et al., 2020).

 

Because these relationships are complex, musculoskeletal health represents a major pillar within the broader Feline Health Knowledge System.

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Key Concepts Within This Pillar

 

Several foundational concepts help explain current understanding of feline musculoskeletal health.

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Mobility Versus Disease

 

Reduced mobility is not synonymous with disease. Activity patterns naturally change with age, and distinguishing normal aging from pathological impairment remains an important research challenge (Yamazaki et al., 2020; Dowgray & Comerford, 2020).

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Osteoarthritis and Degenerative Joint Disease

 

Osteoarthritis is a chronic joint disorder characterized by structural changes affecting cartilage, subchondral bone, synovial tissues, and surrounding structures. Degenerative joint disease serves as a broader term encompassing these progressive changes (Lascelles & Sheilah, 2010).

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Bone Remodeling

 

Bone is a dynamic tissue that continuously undergoes remodeling throughout life. Adaptations in bone density and structure occur in response to mechanical loading, aging, and disease processes (Lopez et al., 2024).

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Muscle Aging and Sarcopenia

 

Age-related muscle loss, clinically defined as feline sarcopenia, is increasingly recognized in companion animals and distinguished from cachexia driven by chronic disease. Longitudinal studies suggest that muscle decline begins earlier than previously appreciated and may precede major bodyweight changes (Pye et al., 2025; Lutchman et al., 2023).

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Quality of Life

 

Modern musculoskeletal research increasingly evaluates outcomes beyond structural abnormalities alone. Functional ability, activity levels, behavior, comfort, and overall wellbeing are recognized as important indicators of musculoskeletal health (Yeowell et al., 2021).

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Joint Health & Osteoarthritis in Cats

 

Joint health represents the most extensively studied area of feline musculoskeletal medicine. Research consistently identifies osteoarthritis and degenerative joint disease as major contributors to age-related mobility impairment.

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Historically, osteoarthritis was believed to be relatively uncommon in cats. Advances in imaging, behavioral assessment, and epidemiological research have overturned this assumption. Multiple studies now demonstrate that degenerative joint disease is highly prevalent, particularly among middle-aged and senior cats.

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In a landmark study of 100 cats, 61% of cats six years of age and older exhibited radiographic evidence of osteoarthritis affecting at least one joint, while 48% showed disease affecting multiple joints (Slingerland et al., 2011). Additional investigations have reported widespread joint involvement throughout the feline population, with prevalence estimates varying according to imaging techniques and diagnostic criteria (Lascelles et al., 2010; Kimura et al., 2020).

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Joint involvement in cats commonly affects the shoulders, elbows, hips, stifles, tarsi, and portions of the vertebral column. Studies have also demonstrated that bilateral disease is common, suggesting that osteoarthritis frequently develops as a multifocal condition rather than an isolated joint problem (Slingerland et al., 2011; Ley et al., 2025).

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One of the most important findings in feline osteoarthritis research is that clinical signs often differ from traditional expectations. Many affected cats do not display obvious lameness. Instead, changes are frequently behavioral and gradual. Owners may observe decreased willingness to jump, reduced participation in play, difficulty accessing elevated locations, alterations in grooming behavior, changes in sleeping patterns, reduced sociability, or modified litter box habits (Bennett & Morton, 2009; Enomoto et al., 2020).

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This subtle presentation contributes to underdiagnosis. Reviews of feline musculoskeletal aging consistently identify recognition of mobility impairment as one of the greatest challenges in feline medicine (Dowgray & Comerford, 2020). Research evaluating owner observations has shown that mobility-related behavioral changes often correlate with objective indicators of musculoskeletal impairment, highlighting the importance of longitudinal observation in aging cats (Maniaki et al., 2023).

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Researchers have developed several tools to improve identification and monitoring of osteoarthritis-associated pain and mobility impairment. Examples include validated clinical metrology instruments (CMIs) like the Feline Musculoskeletal Pain Index (FMPI) and the CSOM (Client-Specific Outcome Measures), which evaluate functional changes through structured owner observations (Benito et al., 2013; Gruen et al., 2015; Enomoto et al., 2021). These tools reflect a broader shift toward measuring function and quality of life in addition to radiographic abnormalities.

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Diagnostic research also illustrates the complexity of feline joint disease. Radiographic changes do not always correspond directly with observed clinical impairment, while some objective gait measurements may struggle to distinguish healthy cats from those with naturally occurring multi-joint disease because compensation strategies can mask abnormalities (Freire et al., 2011; Dowgray et al., 2024).

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Emerging studies increasingly examine risk factors associated with osteoarthritis. Obesity, body composition, aging, trauma history, and joint loading patterns have all been investigated as potential contributors to disease burden (Maniaki et al., 2021; Ley et al., 2025).

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Collectively, these findings support the view that feline osteoarthritis is a multifactorial condition influenced by both local joint changes and broader systemic factors.

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Read our comprehensive clinical guide to Feline Joint Health & Degenerative Joint Disease. 

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Bone Health, Skeletal Density & Remodeling in Cats

 

Bone health forms the structural foundation of the feline musculoskeletal system. Bones support the body, protect internal organs, enable movement through interactions with muscles and joints, and help regulate minerals throughout the body.

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Although bone health receives less attention than osteoarthritis in feline research, growing evidence demonstrates that skeletal tissues play an active role in musculoskeletal function and disease. Bone is not a static structure. Instead, it continuously undergoes remodeling through processes involving bone formation, resorption, adaptation, and repair. These processes help maintain skeletal integrity while responding to mechanical forces and physiological demands (Lopez et al., 2024; Stockman et al., 2021).

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Recent studies suggest that bone changes may contribute significantly to osteoarthritis development and progression. In particular, research evaluating feline knee joints has demonstrated associations between osteoarthritis severity and increasing bone mineral density. Both computed tomography-based measurements and radiographic assessments identified progressive increases in bone density as osteoarthritis became more severe (Bonecka et al., 2024).

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These findings resemble patterns observed in other species, where subchondral bone adapts to altered loading forces associated with degenerative joint disease. However, researchers emphasize that the relationship between osteoarthritis and bone mineral density remains incompletely understood in cats, and additional studies are needed to determine whether these changes represent causes, consequences, or parallel features of disease progression (Bonecka et al., 2024).

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Body size may also influence skeletal health. Research exploring whole-body osteoarthritis burden found that larger cats exhibited increased risk of certain joint abnormalities, including carpal osteoarthritis. Associations between insulin-like growth factor 1 (IGF-1) and total osteoarthritis burden further suggest potential links between growth-related biology, skeletal adaptation, and musculoskeletal disease (Ley et al., 2025).

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The feline skeleton is also highly specialized for agility, jumping, climbing, and predatory behaviors. Anatomical and biomechanical studies continue to expand understanding of skeletal structure, joint mechanics, and limb function in domestic cats and related felid species (Doube et al., 2009; Bakıcı & Kürüm, 2025; Basa et al., 2020).

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Advanced imaging techniques have further improved knowledge of feline skeletal anatomy. Computed tomography studies of the pelvis, hip, stifle, antebrachium, and other skeletal regions provide increasingly detailed reference data that support future investigations into orthopedic disease and musculoskeletal aging (Miranda et al., 2020; Dursun et al., 2023; Nemati et al., 2026).

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Bone health also intersects closely with nutrition and mineral metabolism. Calcium, phosphorus, vitamin D, amino acids, and other nutrients contribute to skeletal biology and bone remodeling processes. While these relationships are biologically plausible and well-established at a physiological level, direct clinical evidence examining long-term nutritional prevention of feline musculoskeletal disease remains limited compared with prevalence and diagnostic research (Stockman et al., 2021; Lopez et al., 2024).

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Current evidence therefore supports viewing bone tissue as an active participant in musculoskeletal health rather than merely a passive framework. Ongoing research continues to explore how skeletal adaptation, mineral density, joint degeneration, and aging interact throughout the feline lifespan.

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Explore our detailed breakdown of Feline Bone Health & Skeletal Remodeling. 

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Muscle Function, Aging & Feline Sarcopenia

 

Muscles are essential for movement, posture, stability, locomotion, balance, and physical performance. The feline muscular system supports the remarkable agility, flexibility, and athleticism cats are known for. Muscle tissues also contribute to metabolic regulation, energy expenditure, and overall body composition.

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Compared with osteoarthritis research, feline muscle biology remains a developing field. However, recent longitudinal studies have substantially improved understanding of muscle aging and its relationship to musculoskeletal health.

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One of the most important findings from contemporary research is that muscle loss begins earlier than many people expect. Long-term monitoring of aging pet cats demonstrated gradual declines in muscle condition beginning between approximately seven and ten years of age, followed by more rapid deterioration in later years (Pye et al., 2025). Notably, these changes often occur before dramatic reductions in body weight become apparent.

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This finding has important implications for understanding healthy aging. Body weight alone may not accurately reflect changes in body composition. A cat can maintain relatively stable weight while simultaneously experiencing reductions in muscle mass and changes in fat distribution. Consequently, muscle condition is increasingly recognized as an important component of musculoskeletal assessment in aging cats (Lutchman et al., 2023; Pye et al., 2025).

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Age-related declines in physical activity have also been documented using objective monitoring technologies. Activity monitors show that aging cats generally spend less time moving, perform fewer jumps, and spend more time resting or sleeping than younger individuals (Yamazaki et al., 2020). These changes may reflect normal aging processes, musculoskeletal impairment, chronic disease, or combinations of multiple factors.

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Distinguishing normal age-related changes from pathological impairment remains an important area of investigation. Researchers increasingly recognize that musculoskeletal aging is not defined solely by joint disease. Instead, changes in muscle mass, body composition, physical activity, and mobility may occur simultaneously and influence one another throughout the aging process (Dowgray & Comerford, 2020; Pye et al., 2025).

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Studies evaluating body composition further support this integrated perspective. Cats over 10 years of age are more likely to exhibit mild muscle loss, while cats over 14 years of age increasingly transition toward underweight body condition rather than obesity (Pye et al., 2025). Chronic disease may accelerate declines in body weight, body condition score, and muscle condition, highlighting the close relationship between overall health and musculoskeletal function.

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Anatomical investigations continue to improve understanding of feline muscle structure and biomechanics. Detailed studies of elbow, knee, hip, forelimb, cervical, thoracic, antebrachial, and carpal musculature provide valuable reference information regarding normal feline anatomy and movement patterns (Cuff et al., 2016; Slesarenko et al., 2022; Slesarenko et al., 2023; Nur et al., 2026). These studies establish foundational knowledge for future research involving orthopedic disorders, rehabilitation, muscle aging, and locomotion.

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Research examining muscle function during walking also highlights the complexity of feline locomotion. Coordinated interactions among multiple muscle groups allow cats to maintain efficient movement patterns while adapting to changing terrain and physical demands (Miyake et al., 2025). Understanding these normal biomechanical patterns is essential for interpreting mobility impairment associated with musculoskeletal disease.

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Overall, current evidence suggests that muscle health is a critical yet historically underappreciated component of feline musculoskeletal wellbeing. As research advances, muscle aging and body composition are increasingly viewed as important contributors to mobility, function, and healthy aging.

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Read our full article on Feline Muscle Function, Sarcopenia & Mobility. 

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Current Research Themes

 

Feline musculoskeletal research continues to evolve rapidly. Several themes dominate contemporary investigation.

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Improving Detection of Osteoarthritis

 

One of the strongest areas of current research focuses on identifying osteoarthritis earlier and more accurately. Studies continue to refine owner questionnaires, mobility checklists, pain assessment tools, activity monitoring technologies, and behavioral screening methods designed specifically for cats (Enomoto et al., 2020; Gober, 2025).

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Objective Mobility Monitoring

 

Wearable activity monitors, accelerometers, machine-learning approaches, and gait analysis technologies are increasingly used to quantify movement and activity patterns in cats. These tools may improve understanding of both normal aging and disease-related impairment (Yamazaki et al., 2020; Liu et al., 2024; Dowgray et al., 2024).

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Bone Adaptation and Osteoarthritis

 

Emerging evidence suggests important interactions between bone mineral density, skeletal adaptation, and degenerative joint disease. Researchers continue to investigate whether bone remodeling contributes directly to osteoarthritis progression or reflects adaptation to altered joint mechanics (Bonecka et al., 2024).

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Muscle Aging and Sarcopenia

 

Longitudinal studies increasingly focus on age-related muscle loss, body composition changes, and functional decline. This work aims to improve understanding of healthy aging and distinguish expected age-related changes from pathological musculoskeletal impairment (Pye et al., 2025; Lutchman et al., 2023).

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Molecular Mechanisms of Pain

 

Recent investigations are exploring molecular pathways associated with chronic pain and osteoarthritis, including inflammatory mediators, sensory signaling pathways, proteomics, and neurobiological mechanisms. These studies may improve understanding of why some cats experience more severe functional impairment than others despite similar structural changes (Lascelles et al., 2025; Wheeler et al., 2026).

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Rehabilitation and Functional Recovery

 

Interest in feline rehabilitation and physiotherapy continues to expand. Recent reviews emphasize the growing role of rehabilitation sciences in supporting assessment of mobility, physical function, and recovery following musculoskeletal injury or disease (Adwani et al., 2025; Goldberg, 2025a; Goldberg, 2025b).

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Collectively, these research directions reflect a shift toward more comprehensive assessment of musculoskeletal health across the feline lifespan.

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Frequently Asked Questions

 

What is musculoskeletal health in cats?

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Musculoskeletal health refers to the condition and function of the bones, joints, muscles, cartilage, ligaments, tendons, and associated connective tissues that support movement, posture, and physical activity.

 

What is the most common musculoskeletal disorder in cats?

 

Current evidence identifies osteoarthritis and degenerative joint disease as the most common musculoskeletal disorders affecting older

cats (Slingerland et al., 2011; Dowgray & Comerford, 2020).

 

Why is osteoarthritis often missed in cats?

 

Cats frequently display subtle behavioral changes rather than obvious lameness. Reduced jumping, decreased grooming, altered activity levels, and changes in social behavior may occur gradually and be mistaken for normal aging (Bennett & Morton, 2009; Maniaki et al., 2023).

 

Do muscles change as cats age?

 

Yes. Longitudinal studies demonstrate that muscle condition can begin declining during middle age and continues to decrease as cats grow older (Pye et al., 2025).

 

Are bone changes associated with osteoarthritis?

 

Emerging research suggests that increasing osteoarthritis severity may be associated with increasing bone mineral density in affected joints, although this relationship remains under investigation (Bonecka et al., 2024).

 

Does body condition influence musculoskeletal health?

 

Research suggests associations between body composition, obesity, osteoarthritis burden, and musculoskeletal function. These relationships continue to be actively studied (Teng et al., 2018; Ley et al., 2025).

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Explore Related Topics

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Feline Health Overview

Joint Health in Cats

Bone Health in Cats

Muscle Function in Cats