Hip & Knee Passive Range of Motion Assessment

Introduction

The precise assessment of hip and knee passive range of motion (PROM) constitutes a fundamental component of comprehensive movement analysis, providing critical insights into articular mobility, myofascial extensibility, neuromuscular function, and kinetic chain integration. This advanced clinical manual presents evidence-based methodologies for the accurate evaluation of lower extremity PROM, incorporating contemporary perspectives from functional neurology, sensorimotor integration, developmental kinesiology, and myofascial continuity models.

The hip and knee complexes represent pivotal biomechanical junctions within the kinetic chain, significantly influencing both proximal and distal movement quality. The assessment protocols outlined herein emphasize the importance of understanding these articulations within their broader functional context, acknowledging their role in postural stability, locomotion efficiency, and motor control development.

Table 1: Clinical Applications of Hip & Knee PROM Assessment

Assessment Parameter	Clinical Significance	Functional Implications	Integrated Analysis
Hip Mobility Patterns	Reflects pelvic stability and core function	Influences gait mechanics and postural adaptation	Correlates with respiratory patterns and autonomic tone
Knee Arthrokinematics	Determines lower extremity load distribution	Affects shock absorption and force transmission	Interrelates with foot pronation and hip rotation patterns
Muscle Length-Tension Relationships	Identifies altered reciprocal inhibition	Reveals compensatory recruitment strategies	Corresponds with myofascial continuity dysfunctions
Multi-Joint Restrictions	Demonstrates cross-joint adaptation patterns	Contributes to regional interdependence dysfunction	Associates with developmental movement pattern integration
Neurodevelopmental Organization	Relates to primitive reflex integration status	Impacts sensorimotor coordination and sequencing	Correlates with central integrative state and motor planning
Fascial System Integrity	Reflects continuity within myofascial meridians	Influences force transmission efficiency	Demonstrates systemic compensatory adaptations

1. Knee Flexion Assessment

Anatomical Significance

Knee flexion represents a fundamental movement pattern essential for numerous functional activities, including locomotion, postural transitions, and athletic performance. This motion occurs primarily at the tibiofemoral joint in the sagittal plane around a coronal axis, involving complex arthrokinematics including rolling, sliding, and rotation components.

The assessment of knee flexion provides critical information regarding posterior capsular mobility, hamstring function, gastrocnemius length-tension relationships, and neuromuscular control mechanisms. Restricted knee flexion significantly impacts functional mobility patterns and may indicate proximal or distal dysfunction within the kinetic chain.

Assessment Protocol

Normal Range Values:

• 0° to 135° (135° total range)

Testing Position:

• Subject position: Prone with foot unsupported beyond table edge
• Hip position: Neutral (0° flexion, extension, rotation, abduction, adduction)
• Knee position: If full extension is limited, place support under proximal thigh
• Foot position: Relaxed

Stabilization Technique:

• Secure femur to prevent hip movement
• Maintain neutral pelvic alignment
• Prevent compensatory lumbar extension

Goniometer Placement:

• Axis (A): Centered at lateral knee joint line
• Stationary arm (SA): Aligned with lateral midline of femur using greater trochanter as reference
• Movement arm (MA): Follows lateral midline of fibula toward lateral malleolus

Measurement Procedure:

1. Stabilize femur to maintain hip position
2. Gradually flex knee until first tissue resistance is encountered
3. Maintain goniometer alignment throughout movement
4. Document maximum angle achieved prior to compensation
5. Note quality of movement and end-feel characteristics

Restricted ROM Clinical Correlations:

• Limited knee flexion: May indicate quadriceps hypertonicity, anterior capsular restriction, or joint effusion
• Painful arc during movement: Consider meniscal involvement or patellofemoral dysfunction
• Altered movement quality: Evaluate for neuromuscular control deficits or proprioceptive integration challenges

Differential Assessment

Table 2: Potential Restrictive Structures in Knee Flexion Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Rectus Femoris	Restriction increases with hip extension	Tender anterior thigh	Limitation increases in Thomas test position
Vastus Intermedius	Consistent restriction throughout motion	Deep thigh tension	Limited tissue mobility with quadriceps mobilization
Anterior Knee Capsule	Firm capsular end-feel	Joint line tenderness	Restricted accessory joint movements
Patellofemoral Complex	Crepitus during movement	Altered patellar tracking	Restriction with varied patellar positions
Neural Tissue	Discomfort with neural tension tests	Referred symptoms with movement	Positive slump or straight leg raise tests
Vastus Lateralis/Medialis	Asymmetrical restriction pattern	Lateral/medial thigh tenderness	Directional limitation with specific tissue testing

Neuromuscular Considerations:

• Evaluate for altered reciprocal inhibition between quadriceps and hamstrings
• Assess influence of crossed extensor reflex patterns on muscle tone distribution
• Consider compensatory strategies related to lower crossed syndrome patterns

2. Hip Flexion Assessment (Knee Flexed)

Anatomical Significance

Hip flexion with knee flexed evaluates iliofemoral joint mobility while minimizing hamstring tension, allowing for isolation of hip joint structures and iliopsoas function. This assessment provides critical information regarding posterior hip capsule mobility, gluteal extensibility, and neurodevelopmental organization patterns.

The hip flexion movement represents a fundamental component of functional mobility, directly influencing gait mechanics, postural control, and force distribution throughout the kinetic chain. Comprehensive assessment of this motion pattern facilitates precise identification of movement dysfunction origins.

Assessment Protocol

Normal Range Values:

• 0° to 120° (120° total range) with knee flexed

Testing Position:

• Subject position: Supine with contralateral leg extended
• Hip position: Neutral (0° abduction, adduction, rotation)
• Knee position: Fully flexed to minimize hamstring tension
• Lumbar spine: Maintained in neutral position

Stabilization Technique:

• Secure pelvis to prevent posterior tilting
• Control for lumbar flexion compensation
• Maintain sagittal plane alignment of femur

Goniometer Placement:

• Axis (A): Centered over greater trochanter of femur
• Stationary arm (SA): Aligned with lateral midline of pelvis
• Movement arm (MA): Follows lateral midline of femur

Measurement Procedure:

1. Stabilize pelvis to prevent rotation
2. Gradually flex hip while maintaining knee flexion
3. Continue movement until first resistance barrier or pelvic rotation occurs
4. Document maximum angle achieved prior to compensation
5. Note presence of anterior hip impingement symptoms

Restricted ROM Clinical Correlations:

• Limited hip flexion: May indicate gluteal hypertonicity, posterior capsular restriction, or sacroiliac dysfunction
• Anterior hip pinching: Consider iliopsoas tension, femoral acetabular impingement, or labral involvement
• Asymmetrical findings: Evaluate for pelvic rotational patterns or compensatory strategies

Differential Assessment

Table 3: Potential Restrictive Structures in Hip Flexion (Knee Flexed) Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Gluteus Maximus	Restriction with knee flexed	Posterior gluteal tenderness	Limitation without hamstring involvement
Adductor Magnus (posterior fibers)	Medial restriction pattern	Tender proximal adductor region	Restriction increases with hip abduction
Posterior Hip Capsule	Firm capsular end-feel	Deep joint restriction	Limitation in multiple planes of movement
Piriformis/Deep External Rotators	Restriction increases with internal rotation	Tender deep gluteal region	Limitation varies with rotational testing
Ischiofemoral Ligament	Restriction with extension and internal rotation	Posterior joint line tenderness	Specific directional limitation
Sacroiliac Joint Dysfunction	Asymmetrical findings	Tender SI joint region	Positive SI provocation tests

Neuromuscular Considerations:

• Evaluate vestibular-proprioceptive integration influencing hip stabilization strategies
• Assess primitive reflex integration status affecting hip mobility patterns
• Consider fascial continuity relationships with thoracolumbar junction and abdominal canister control

3. Hip Flexion Assessment (Straight Leg)

Anatomical Significance

Hip flexion with knee extended evaluates the complex interaction between neural tissue extensibility, posterior chain myofascial continuity, and iliofemoral joint arthrokinematics. This assessment specifically challenges the hamstring complex and sciatic nerve tract while maintaining hip joint integrity.

The straight leg hip flexion pattern provides crucial diagnostic information regarding neurodynamic mobility, fascial system integration, and distribution of tension throughout the posterior kinetic chain. This assessment directly correlates with functional movement capabilities and compensatory pattern development.

Assessment Protocol

Normal Range Values:

• 0° to 70°-90° (70°-90° total range) with knee extended

Testing Position:

• Subject position: Supine with contralateral leg extended
• Hip position: Neutral (0° abduction, adduction, rotation)
• Knee position: Fully extended (0° flexion)
• Ankle position: Relaxed (slight plantarflexion)

Stabilization Technique:

• Secure pelvis to prevent posterior tilting
• Control for lumbar flexion compensation
• Prevent hip rotation during movement

Goniometer Placement:

• Axis (A): Centered over greater trochanter of femur
• Stationary arm (SA): Aligned with mid-axillary line of trunk
• Movement arm (MA): Follows lateral midline of femur

Measurement Procedure:

1. Stabilize pelvis to prevent rotation
2. Gradually flex hip while maintaining knee extension
3. Continue movement until first resistance barrier or pelvic rotation occurs
4. Document maximum angle achieved prior to compensation
5. Note any neurodynamic symptoms (radiating sensations, paresthesia)

Restricted ROM Clinical Correlations:

• Limited straight leg raise: May indicate hamstring restriction, neural tension, or posterior kinetic chain dysfunction
• Neurogenic symptoms: Consider neural mobility limitations, nerve root compression, or peripheral nerve entrapment
• Asymmetrical findings: Evaluate for pelvic alignment issues or unilateral compensatory patterns

Differential Assessment

Table 4: Potential Restrictive Structures in Hip Flexion (Straight Leg) Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Hamstring Complex	Ischial tuberosity tension	Tender posterior thigh	Limitation decreases with knee flexion
Gastrocnemius	Restriction increases with ankle dorsiflexion	Calf tension	Limitation varies with ankle positioning
Sciatic Nerve	Radiating symptoms with movement	Positive neural tension signs	Limitation changes with ankle and neck positioning
Posterior Femoral Cutaneous Nerve	Sensory symptoms posterior thigh	Altered sensitivity with testing	Limitation with specific neural tension testing
Sacrotuberous Ligament	Consistent limitation	Tender ischial attachment	Limitation with specific ligament tension
Thoracolumbar Fascia	Systemic restriction pattern	Reduced tissue mobility	Limitation correlates with trunk forward bending

Neuromuscular Considerations:

• Evaluate for altered sensorimotor integration affecting posterior chain regulation
• Assess relationship between breathing patterns and posterior chain tension
• Consider developmental movement pattern organization and remediation strategies

4. Knee Extension Assessment (90/90 Position)

Anatomical Significance

The 90/90 knee extension assessment evaluates hamstring length-tension relationships in a position that minimizes pelvic compensation through standardized hip positioning. This assessment isolates hamstring extensibility from neural tension considerations and provides specific information regarding myofascial restriction patterns.

This measurement correlates with functional hamstring capacity during activities requiring simultaneous hip flexion and knee extension, such as terminal swing phase of gait, high-speed running mechanics, and postural control during forward-leaning activities.

Assessment Protocol

Normal Range Values:

• 0° to 20°-90° (20°-90° from vertical) with hip and knee initially at 90°

Testing Position:

• Subject position: Supine with hip flexed to 90°
• Hip position: Neutral (0° rotation, abduction, adduction)
• Initial knee position: Flexed to 90°
• Contralateral leg: Extended on table

Stabilization Technique:

• Secure pelvis to prevent posterior tilting
• Maintain hip at 90° flexion throughout assessment
• Control for compensatory strategies

Goniometer Placement:

• Axis (A): Centered at lateral knee joint line
• Stationary arm (SA): Aligned with lateral midline of femur
• Movement arm (MA): Follows lateral midline of fibula

Measurement Procedure:

1. Stabilize pelvis and maintain hip at 90° flexion
2. Gradually extend knee until first resistance barrier or pelvic rotation
3. Document angle between vertical position (0°) and maximum extension achieved
4. Note quality of movement and end-feel characteristics
5. Observe for neurodynamic symptoms

Restricted ROM Clinical Correlations:

• Limited knee extension: Indicates hamstring flexibility deficit, myofascial restriction, or neurodynamic involvement
• Asymmetrical findings: Consider unilateral movement pattern adaptations or compensatory strategies
• Pain with testing: Evaluate for myofascial trigger points, tendinopathy, or neurogenic involvement

Differential Assessment

Table 5: Potential Restrictive Structures in 90/90 Knee Extension Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Biceps Femoris	Lateral restriction pattern	Tender lateral posterior thigh	Limitation with lateral hamstring tension
Semitendinosus/Semimembranosus	Medial restriction pattern	Tender medial posterior thigh	Limitation with medial hamstring tension
Common Hamstring Tendon	Proximal restriction	Tender ischial tuberosity region	Consistent limitation pattern
Gastrocnemius	Increased with ankle dorsiflexion	Calf tension	Limitation varies with ankle position
Sciatic Nerve	Radiating symptoms with movement	Positive neural tension signs	Limitation with slump test positioning
Tibial Nerve	Distal radiating symptoms	Popliteal sensitivity	Limitation with specific neural tension tests

Neuromuscular Considerations:

• Evaluate for altered firing patterns between hamstrings and quadriceps
• Assess for neurodevelopmental organization affecting reciprocal inhibition
• Consider fascial connections between hamstrings and thoracolumbar system

5. Internal Hip Rotation Assessment

Anatomical Significance

Internal hip rotation represents a critical motion component influencing functional movement patterns, pelvic stability, and lower extremity biomechanics. This movement primarily occurs at the iliofemoral joint in the transverse plane around a longitudinal axis, reflecting the integrity of posterior hip structures and rotational control mechanisms.

Assessment of internal rotation provides essential diagnostic information regarding deep external rotator function, posterior capsular mobility, and femoral acetabular congruence. Limitations in this motion pattern frequently correlate with compensatory movement strategies affecting the entire kinetic chain.

Assessment Protocol

Normal Range Values:

• 0° to 45° (45° total range)

Testing Position:

• Subject position: Supine with hip and knee flexed to 90°
• Hip position: Neutral (0° abduction, adduction)
• Knee position: Flexed to 90°
• Contralateral leg: Extended on table

Stabilization Technique:

• Secure pelvis to prevent lateral tilting
• Prevent femoral adduction during movement
• Maintain hip flexion angle throughout assessment

Goniometer Placement:

• Axis (A): Centered over anterior aspect of patella
• Stationary arm (SA): Perpendicular to anterior femoral midline
• Movement arm (MA): Aligned with anterior tibial crest

Measurement Procedure:

1. Stabilize pelvis and maintain 90° hip flexion
2. Gradually rotate femur internally until first resistance barrier
3. Document maximum angle achieved prior to compensation
4. Note quality of movement and end-feel characteristics
5. Observe for hip joint symptoms during assessment

Restricted ROM Clinical Correlations:

• Limited internal rotation: May indicate deep external rotator hypertonicity, posterior capsular restriction, or femoral acetabular impingement
• Pain with terminal movement: Consider labral pathology, femoral acetabular impingement syndrome, or capsular irritation
• Asymmetrical findings: Evaluate for rotational pelvic patterns or unilateral compensatory strategies

Differential Assessment

Table 6: Potential Restrictive Structures in Internal Hip Rotation Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Piriformis	Restriction with adduction	Tender deep gluteal region	Limitation increases with FAIR test
Gemelli (Superior/Inferior)	Deep restriction pattern	Deep posterior hip tenderness	Consistent limitation with varied positions
Obturator Internus/Externus	Consistent limitation pattern	Deep tenderness with pelvic rotation	Limitation varies with hip flexion angle
Quadratus Femoris	Limitation with extension	Ischial region tenderness	Restriction increases in extended position
Ischiofemoral Ligament	Firm end-feel	Deep posterior joint line	Limitation with combined movements
Posterior Hip Capsule	Restriction in multiple planes	Limited joint play	Limitation with joint mobilization testing

Neuromuscular Considerations:

• Evaluate for altered sensorimotor integration affecting rotational control
• Assess relationship between hip rotator function and core stabilization strategies
• Consider developmental rotational patterns and remediation approaches

6. External Hip Rotation Assessment

Anatomical Significance

External hip rotation constitutes a fundamental movement component essential for functional mobility, pelvic stability, and lower extremity biomechanical efficiency. This motion occurs at the iliofemoral joint in the transverse plane around a longitudinal axis, reflecting anterior hip capsule integrity and medial rotator function.

Assessment of external rotation provides valuable diagnostic information regarding medial rotator extensibility, anterior capsular mobility, and femoral acetabular congruence. This measurement significantly correlates with functional movement patterns including gait, postural transitions, and athletic performance capabilities.

Assessment Protocol

Normal Range Values:

• 0° to 45° (45° total range)

Testing Position:

• Subject position: Supine with hip and knee flexed to 90°
• Hip position: Neutral (0° abduction, adduction)
• Knee position: Flexed to 90°
• Contralateral leg: Extended on table

Stabilization Technique:

• Secure pelvis to prevent lateral tilting
• Prevent femoral adduction during movement
• Maintain hip flexion angle throughout assessment

Goniometer Placement:

• Axis (A): Centered over anterior aspect of patella
• Stationary arm (SA): Perpendicular to anterior femoral midline
• Movement arm (MA): Aligned with anterior tibial crest

Measurement Procedure:

1. Stabilize pelvis and maintain 90° hip flexion
2. Gradually rotate femur externally until first resistance barrier
3. Document maximum angle achieved prior to compensation
4. Note quality of movement and end-feel characteristics
5. Observe for hip joint symptoms during assessment

Restricted ROM Clinical Correlations:

• Limited external rotation: May indicate medial rotator hypertonicity, anterior capsular restriction, or iliopsoas dysfunction
• Pain with terminal movement: Consider anterior hip pathology, iliopsoas tendonitis, or capsular irritation
• Asymmetrical findings: Evaluate for rotational pelvic patterns or unilateral compensatory strategies

Differential Assessment

Table 7: Potential Restrictive Structures in External Hip Rotation Limitation

Anatomical Structure	Associated Signs	Palpation Findings	Assessment Correlation
Tensor Fascia Latae	Lateral restriction pattern	Tender anterolateral hip	Limitation with Ober’s testing
Gluteus Minimus	Deep restriction pattern	Deep tenderness with hip compression	Limitation varies with hip flexion angle
Gluteus Medius (anterior fibers)	Anterolateral restriction	Palpable tension anterolaterally	Increased with hip extension
Iliopsoas Complex	Restriction with extension	Anterior hip tenderness	Limitation increases in Thomas test position
Anterior Hip Capsule	Firm end-feel	Limited joint play	Restriction with accessory movement testing
Iliofemoral Ligament	Consistent restriction pattern	Anterior joint line tenderness	Limitation with combined movements

Neuromuscular Considerations:

• Evaluate for altered reciprocal inhibition between internal and external rotators
• Assess relationship between rotational control and core stabilization strategies
• Consider fascial connections between anterior hip structures and anterior functional lines structures

7. Thomas Test Assessment (Hip Flexor Complex)

Anatomical Significance

The Thomas Test represents a multi-faceted assessment of hip flexor complex extensibility, providing critical information regarding iliopsoas length, rectus femoris extensibility, tensor fascia latae function, and sartorius length-tension relationships. This comprehensive assessment directly correlates with postural control strategies, gait mechanics, and lumbopelvic stability.

The hip flexor complex significantly influences lumbar spine position, pelvic alignment, and lower extremity biomechanics, making this assessment essential for understanding movement dysfunction throughout the kinetic chain. The differentiated analysis of specific hip flexor components facilitates precise intervention planning and functional integration strategies.

Assessment Protocol for Iliopsoas

Normal Range Values:

• 0° to -5° (5° total range) with femur dropping below horizontal
• Note: Starting position begins with 5° posterior pelvic tilt

Testing Position:

• Subject position: Supine with pelvis supported at table edge
• Contralateral leg: Fully flexed at hip and knee in “knee-to-chest” position
• Test leg: Relaxed and unsupported
• Pelvis: Maintained in slight posterior tilt

Stabilization Technique:

• Subject manually holds contralateral knee to chest
• Clinician stabilizes pelvis to prevent anterior tilting
• Control for compensatory lumbar extension

Goniometer Placement:

• Axis (A): Centered over greater trochanter
• Stationary arm (SA): Aligned with lateral midaxillary line of trunk
• Movement arm (MA): Follows lateral midline of femur toward lateral epicondyle

Measurement Procedure:

1. Position subject with test leg hanging relaxed
2. Palpate anterior superior iliac spine (ASIS)
3. Passively extend hip until first resistance or ASIS movement occurs
4. Document position of femur relative to horizontal
5. Note quality of end-feel and pelvic compensation strategies

Restricted ROM Clinical Correlations:

• Femur above horizontal: Indicates iliopsoas restriction
• Increased lordosis with test: Consider lumbopelvic rhythm dysfunction
• Pain with assessment: Evaluate for tendinopathy, psoas bursitis, or anterior capsule irritation

Assessment Protocol for Rectus Femoris

Normal Range Values:

• 0° to 90° (90° total range) of knee flexion

Testing Position:

• Subject position: Same as iliopsoas assessment
• Contralateral leg: Fully flexed at hip and knee in “knee-to-chest” position
• Test leg: Relaxed with hip extended to length of iliopsoas
• Pelvis: Maintained in slight posterior tilt

Stabilization Technique:

• Subject manually holds contralateral knee to chest
• Clinician stabilizes pelvis to prevent anterior tilting
• Maintain hip in extended position to pre-stretch rectus femoris

Goniometer Placement:

• Axis (A): Centered over lateral knee joint line
• Stationary arm (SA): Aligned with lateral midline of femur toward greater trochanter
• Movement arm (MA): Follows lateral midline of fibula toward lateral malleolus

Measurement Procedure:

1. Position subject with test leg in extended position
2. Passively flex knee until first resistance barrier
3. Document maximum knee flexion angle achieved
4. Note quality of end-feel and compensatory strategies
5. Observe for symptom reproduction with movement

Restricted ROM Clinical Correlations:

• Limited knee flexion: Indicates rectus femoris restriction
• Pain with terminal movement: Consider quadriceps tendinopathy or patellofemoral issues
• Combined limitations with iliopsoas test: Evaluate for anterior chain dominance patterns

Differential Assessment

Table 8: Differentiation of Hip Flexor Complex Restrictions in Thomas Test

Component Structure	Assessment Findings	Functional Implications	Integrated Analysis
Iliopsoas	Femur remains above horizontal	Altered lumbopelvic rhythm	Correlates with respiratory mechanics
Rectus Femoris	Limited knee flexion with extended hip	Altered patellofemoral mechanics	Influences deceleration capacity
Tensor Fascia Latae	Hip abduction with external rotation	Modified frontal plane stability	Affects lateral fascial line function
Sartorius	Hip external rotation with knee flexion	Altered rotational control	Influences medial compartment mechanics
Anterior Hip Capsule	Limitation with firm capsular end-feel	Restricted accessory movements	Affects proprioceptive feedback
Neurodevelopmental Factors	Altered cross-extension reflexes	Modified stability strategies	Correlates with developmental patterns

Neuromuscular Considerations:

• Evaluate for altered stabilization strategies affecting hip flexor regulation
• Assess relationship between breathing patterns and hip flexor tone
• Consider fascial relationships between anterior hip structures and intrinsic core stabilizers

Advanced Clinical Integration and Application

Comprehensive Evaluation Framework

The integration of hip and knee PROM assessments within a broader movement analysis framework provides clinicians with essential information regarding movement dysfunction origins, compensatory pattern development, and intervention prioritization. Consider these findings within the context of:

1. Postural analysis parameters:
   • Alignment relationships and force distribution
   • Compensatory adaptations and stability strategies
   • Structural vs. functional limitations
2. Dynamic movement assessment:
   • Gait mechanics and loading patterns
   • Functional movement screen findings
   • Neurodevelopmental movement organization
3. Sensorimotor integration:
   • Proprioceptive acuity and spatial awareness
   • Motor planning and sequential organization
   • Movement pattern automaticity and efficiency
4. Fascial system continuity:
   • Myofascial meridian relationships
   • Force transmission capabilities
   • System-wide compensation patterns
5. Neurodevelopmental organization:
   • Primitive reflex integration status
   • Vestibular-proprioceptive coordination
   • Movement pattern maturation sequence

Table 9: Clinical Reasoning Matrix for Hip & Knee ROM Assessment Findings

Assessment Finding	Primary Influences	Compensatory Strategies	Treatment Considerations
Limited Hip Internal Rotation	Deep external rotator hypertonicity, posterior capsular restriction	Increased lumbar rotation, foot pronation	Address tissue-specific restrictions, evaluate pelvic positioning, integrate rotational control training
Restricted Knee Flexion	Quadriceps hypertonicity, anterior capsular restriction	Increased hip flexion, posterior weight shift	Target myofascial restrictions, restore neuromuscular balance, progress through functional movement patterns
Hip Flexor Complex Tightness	Anterior chain dominance, psoas dysfunction	Increased lumbar lordosis, posterior pelvic tilt inhibition	Address specific components, integrate breathing mechanics, develop core control patterns
Hamstring Length Limitation	Posterior chain restriction, neurodynamic tension	Increased posterior pelvic tilt, reduced hip mobility	Differentiate myofascial vs. neural components, address sensorimotor integration, develop eccentric control
Asymmetrical Hip Rotation	Pelvic rotational patterns, unilateral compensations	Altered gait mechanics, modified weight shifting	Restore pelvic neutral positioning, address side-to-side discrepancies, develop rotational stability
Combined Hip-Knee Restrictions	Regional interdependence dysfunction, movement pattern alteration	System-wide compensatory strategies, altered motor control	Apply integrated approach addressing regional relationships, develop coordinated movement patterns

Clinical Documentation Standards

Comprehensive documentation of hip and knee PROM assessment should include:

1. Quantitative measurements with specific positioning parameters
2. Qualitative assessment of movement quality and end-feel characteristics
3. Identification of primary restrictive structures
4. Comparison to contralateral measurements
5. Correlation with functional movement patterns
6. Integration with regional interdependence framework
7. Clinical reasoning for intervention prioritization

Summary

The systematic assessment of hip and knee passive range of motion provides essential diagnostic information extending beyond simple measurement values. When interpreted within an integrated movement systems approach, these findings inform comprehensive treatment strategies addressing the multifaceted nature of movement dysfunction.

The assessment protocols outlined in this manual represent evidence-based methodologies incorporating contemporary understanding of functional anatomy, neurodevelopmental organization, and myofascial system integration. Clinicians are encouraged to utilize these structured assessment approaches while maintaining awareness of individual variations and functional demands specific to each client’s unique presentation.

By understanding the complex interrelationships between articular mobility, myofascial extensibility, neuromuscular control, and sensorimotor integration, practitioners can develop targeted intervention strategies addressing the underlying causes of movement dysfunction rather than merely treating symptomatic manifestations.