Chapter 3: The Musculoskeletal System

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Chapter 3: The Musculoskeletal System
Tables - The Hand and Upper Extremity
Table 3-1: Relationship of Impairment of the Digits to Impairment of the Hand
Table 3-2: Relationship of Impairment of the Hand to Impairment of the Upper Extremity
Table 3-3: Relationship of Impairment of the Upper Extremity to Impairment of the Whole Person
Table 3-4: Longitudinal Sensory Loss Impairment for the Thumb and Little Finger Based on Percent of Digit Length Involved
Table 3-5: Thumb Impairment Values Due to Lack of Adduction and to Ankylosis
Table 3-6: Thumb Impairments Due to Lack of Radial Abduction and to Ankylosis
Table 3-7: Thumb Impairments Due to Lack of Opposition and to Ankylosis
Table 3-8: Longitudinal Sensory Loss Impairment for the Thumb and Little Finger Based on Percent of Digit Length Involved
Table 3-9: Longitudinal Sensory Loss Impairment of Index, Middle, and Ring Fingers Based on the Percent of Digit Length Involved
Table 3-10: Origins and Functions of the Peripheral Nerves of the Upper Extremity Emanating from the Brachial Plexus
Table 3-11: Determining Impairment of the Upper Extremity Due to Pain or Sensory Deficit Resulting from Peripheral Nerve Disorders
Table 3-12: Determining Impairment of the Upper Extremity Due to Loss of Power and Motor Deficits Resulting from Peripheral Nerve Disorders Based on Individual Muscle Rating
Table 3-13: Maximum Upper Extremity Impairment Due to Unilateral Sensory or Motor Deficits of Individual Spinal Nerves or to Combined Deficits
Table 3-14: Maximum Upper Extremity Impairments Due to Unilateral Sensory or Motor Deficits of Brachial Plexus, or to Combined Deficits
Table 3-15: Maximum Upper Extremity Impairments Due to Unilateral Sensory or Motor Deficits or Combined Deficits of the Major Peripheral Nerves
Table 3-16: Upper Extremity Impairment Due to Entrapment Neuropathy
Table 3-17: Impairment of Upper Extremity Due to Peripheral Vascular Disease
Table 3-18: Impairment Values for Digits, Hand, Upper Extremity, and the Whole Person for Disorders of Specific Joints
Table 3-19: Impairment from Joint Crepitation
Table 3-20: Impairment from Synovial Hypertrophy
Table 3-21: Impairment from Digit Ulnar or Radial Deviation
Table 3-22: Impairment from Digit Rotational Deformity
Table 3-23: Impairment from Persistent Joint Subluxation or Dislocation
Table 3-24: Impairment from Joint Mediolateral Instability
Table 3-25: Impairment from Wrist and Elbow Joint Radial and Ulnar Deviations
Table 3-26: Upper Extremity Impairment Due to Carpal Instability Patterns
Table 3-27: Impairment of the Upper Extremity After Arthroplasty of Specific Bones or Joints
Table 3-28: Impairment from Intrinsic Tightness
Table 3-29: Impairment Due to Constrictive Tenosynovitis
Table 3-30: Impairment Due to Extensor Tendon Subluxation
Table 3-31: Average Strength of Unsupported Grip by Occupation in 100 Subjects
Table 3-32: Average Strength of Grip by Age in 100 Subjects
Table 3-33: Average Strength of Lateral Pinch by Occupation in 100 Subjects
Table 3-34: Upper Extremity Impairment for Loss of Strength
Tables - The Lower Extremity
Table 3-35: Impairment from Limb Length Discrepancy
Table 3-36: Lower Limb Impairment from Gait Derangement
Table 3-37: Impairments from Leg Muscle Atrophy
Table 3-38: Criteria for Grades of Muscle Function of the Lower Extremity
Table 3-39: Impairments from Lower Extremity Muscle Weakness
Table 3-40: Hip Motion Impairments
Table 3-41: Knee Impairment
Table 3-42: Ankle Motion Impairment Estimates
Table 3-43: Hindfoot Impairment Estimates
Table 3-44: Ankle or Hindfoot Deformity Impairments
Table 3-45: Toe Impairments
Table 3-46: Impairment from Ankylosis in Hip Flexion
Table 3-47: Impairment from Ankylosis in Hip Internal Rotation
Table 3-48: Impairment from Ankylosis in Hip External Rotation
Table 3-49: Impairment from Ankylosis in Hip Abduction
Table 3-50: Impairment from Ankylosis in Hip Adduction
Table 3-51: Impairment from Knee Ankylosis in Varus
Table 3-52: Impairment from Knee Ankylosis in Valgus
Table 3-53: Impairment from Knee Ankylosis in Flexion
Table 3-54: Knee Ankylosis Impairment in Internal or External Malrotation
Table 3-55: Ankle Impairment from Ankylosis in Plantar Flexion or Dorsiflexion
Table 3-56: Ankle Impairment from Ankylosis in Varus Position
Table 3-57: Ankle Impairment from Ankylosis in Valgus Position
Table 3-58: Ankle Impairment from Ankylosis in Internal Malrotation
Table 3-59: Ankle Impairment from Ankylosis in External Malrotation
Table 3-60: Impairments for Loss of Boehler's Angle (Tibia-Os Calcis Angle.)
Table 3-61: Impairment of the Foot Due to Impairments of Toes
Table 3-62: Arthritis Impairments Based on Roentgenographically Determined Cartilage Intervals
Table 3-63: Impairment Estimates for Amputations
Table 3-64: Impairment Estimates for Certain Lower Extremity Impairments
Table 3-65: Rating Hip Replacement Results
Table 3-66: Rating Knee Replacement Results
Table 3-67: Impairments for Skin Loss
Table 3-68: Impairments from Nerve Deficits
Table 3-69: Lower Extremity Impairment Due to Peripheral Vascular Disease
Tables - The Spine
Table 3-70: Spine Impairment Categories
Table 3-71: DRE Impairment Category Differentiators
Table 3-72: DRE Lumbosacral Spine Impairment Categories
Table 3-73: DRE Cervicothoracic Spine Impairment Categories
Table 3-74: DRE Thoracolumbar Spine Impairments
Table 3-75: Whole-person Impairment Percents Due to Specific Spine Disorders
Table 3-76: Cervical Region Impairment from Abnormal Flexion or Extension or Ankylosis
Table 3-77: Impairment Due to Abnormal Motion and Ankylosis of the Cervical Region: Lateral Flexion
Table 3-78: Impairment Due to Abnormal Motion and Ankylosis of the Cervical Region: Rotation
Table 3-79: Impairment Due to Abnormal Motion (Flexion) and Ankylosis of the Thoracic Region
Table 3-80: Impairment Due to Abnormal Motion and Ankylosis of the Thoracic Region: Rotation
Table 3-81: Impairment Due to Abnormal Motion of the Lumbosacral Region: Flexion and Extension
Table 3-82: Impairment Due to Abnormal Motion and Ankylosis of the Lumbosacral Region: Lateral Flexion
Table 3-83: Unilateral Spinal Nerve Root Impairment Affecting the Lower Extremity
  • 1.

    Jr Luck JV, DW. Florence A brief history and comparative analysis of disability systems and impairment rating guides. Orthoped Clin North Am. 1988;19:839-844.

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