Muscle Group III Injury (Shoulder - Deltoid / Triceps) C&P Exam Prep

Manual Muscle Testing (MRC Scale 0-5) - Shoulder Abduction (Deltoid)

What it measures: Motor strength of the deltoid muscle, the primary mover for shoulder abduction. Grades: 5=Normal, 4=Active movement against some resistance, 3=Active movement against gravity only, 2=Active movement with gravity eliminated, 1=Flicker of contraction, 0=No contraction.

What to expect: Examiner will ask you to raise your arm out to the side against resistance. They will compare bilaterally. Testing occurs at the shoulder (RG_4E_SHOULD_RIGHT/LEFT_5_4_3_2_1_0).

Pain considerations: Pain during or after testing is a separate compensable factor under DeLuca. Explicitly state if shoulder abduction causes sharp, burning, or aching pain and whether this pain increases with repeated use.

Manual Muscle Testing (MRC Scale 0-5) - Elbow Extension (Triceps)

What it measures: Motor strength of the triceps brachii, the primary elbow extensor and a key component of Muscle Group III. Grades follow same MRC scale.

What to expect: Examiner will test your ability to straighten your elbow against resistance with the arm in various positions. Recorded at RG_4E_ELBOW_RIGHT/LEFT_5_4_3_2_1_0 and RG_Elbow_EXT_RIGHT/LEFT_5_4_3_2_1_0.

Pain considerations: Triceps weakness combined with pain on extension is a critical combination. Describe the quality, location, and radiation of pain and how many repetitions before significant pain or fatigue develops.

Circumferential Muscle Atrophy Measurement

What it measures: Objective measurement of muscle bulk loss in the deltoid and arm, comparing the affected side to the unaffected side. A measurable difference indicates visible or measurable atrophy per the DBQ.

What to expect: Examiner uses a tape measure at standardized anatomical landmarks (e.g., mid-deltoid, mid-upper arm) to compare bilateral circumference. Recorded at DBQ fields for atrophied side (field _394) and normal side (field _393).

Pain considerations: Atrophy itself is not typically painful, but associated weakness leads to compensatory patterns that cause pain in adjacent structures. Describe any pain or fatigue resulting from compensating with other muscles.

Shoulder Range of Motion (Active and Passive)

What it measures: Functional arc of shoulder movement including forward flexion, abduction, internal and external rotation, and extension. Under DeLuca/Correia requirements, both active and passive ROM must be tested, and the examiner must note whether pain, fatigue, weakness, or incoordination causes additional functional loss beyond the measured ROM.

What to expect: Examiner uses a goniometer to measure degrees of movement. You will be asked to move your arm actively, then the examiner will move it passively. Pain behavior, endpoint pain, and any painful arc must be noted.

Pain considerations: Under DeLuca v. Brown, functional loss due to pain must be considered even if the measured ROM appears relatively preserved. State clearly: 'I cannot raise my arm past this point without significant pain' and describe the pain quality and level on a 0-10 scale.

Scar and Wound Track Assessment

What it measures: Character of scars related to the muscle injury, including whether scars are minimal, have entrance/exit characteristics, are ragged/depressed/adherent, show adhesion to bone (scapula), or indicate wide damage to the muscle belly. This directly affects rating under 38 CFR 4.73.

What to expect: Examiner will visually inspect and palpate all scars in the shoulder/posterior arm region. They will assess size, adherence, depth, and relationship to underlying structures. Fields include _175 through _187 and _181.

Pain considerations: Adherent or tethered scars can cause pain with shoulder movement. Describe whether the scar pulls, burns, or causes sharp pain during specific shoulder motions.

10%

Slight disability: Entrance and exit scars are small or linear indicating minimal muscle damage; no significant loss of function. Muscle strength is essentially normal (Grade 5) or shows only minimal weakness. No significant atrophy or loss of substance.

From 38 CFR: Penetrating wound with minimal soft tissue disruption; surgical scar from exploratory procedure with normal healing and preserved deltoid function.

20%

Moderate disability: Entrance and exit scars indicating track of missile through important muscle groups with some loss of substance; some impairment of muscle tonus, strength deficit (Grade 3-4), some loss of deep fascia, soft flabby muscles in wound area, or some loss of muscle substance.

From 38 CFR: Gunshot wound track through deltoid with palpable muscle defect; surgical debridement with remaining soft flabby muscle tissue; overhead lifting now limited to 5 lbs on affected side.

30%

Moderately severe disability: Ragged, depressed, and adherent scars indicating wide damage to muscle group; induration or atrophy of an entire muscle; adaptive contraction of opposing muscle group; visible or measurable atrophy; loss of power; weakness; impaired coordination; lowered fatigue threshold; pain.

From 38 CFR: Blast injury to shoulder with wide deltoid destruction; visible deltoid hollowing with 2 cm circumferential difference; cannot lift arm against gravity without compensating with trapezius; elbow extension Grade 2 requiring gravity elimination.

40%

Severe disability: In addition to moderately severe findings, marked atrophy of muscle groups not in the track of the missile (neurogenic atrophy), tests of endurance or coordinated movements show marked impairment, adhesion of scar to bone, uncertainty of movement, and findings approaching those of complete paralysis of the muscle group.

From 38 CFR: Severe blast or high-velocity wound to shoulder with near-complete deltoid paralysis; scar adherent to scapula limiting scapulothoracic motion; cannot perform any overhead activity; cannot carry objects with affected limb; Grade 1 shoulder abduction.

Pain - Quality, Location, Radiation

How to describe it: Describe the pain using specific language: location (anterior deltoid, lateral shoulder, posterior arm), quality (burning, stabbing, aching, throbbing), intensity (0-10 scale), and whether it radiates down the arm. Specify what makes it better and worse, and whether it is present at rest or only with activity.

Example: On my worst days, I wake up with a constant 7/10 burning ache across my entire left shoulder that radiates down the back of my arm to my elbow. Even resting my arm at my side causes a dull throb. Any attempt to lift my arm above waist level causes a sharp 9/10 stabbing pain that makes me drop whatever I am holding.

Examiner listens for: Specific pain descriptors that correlate with DBQ fields for fatigue/pain (field _228); clear worst-day reporting; pain at rest versus with activity; pain that limits ROM beyond what is measurable; pain that increases with repeated use (DeLuca repetitive-use factor).

Avoid: Do not say 'it hurts a little' or 'I manage okay.' Do not minimize pain to appear stoic. The examiner documents what you report. If you underreport, the DBQ will reflect a lower severity than your actual condition.

Weakness and Loss of Power

How to describe it: Describe specific tasks you cannot do or can no longer do reliably due to weakness: lifting objects overhead, carrying groceries, pushing open a heavy door, reaching across your body, brushing your hair on the affected side, or pressing your arm against resistance. Give concrete weight limits and distance limits.

Example: I cannot lift my left arm above shoulder height without the arm shaking and giving out. I cannot carry anything heavier than a half-full coffee cup with my left arm. When I try to push a door open, my arm buckles. I have dropped things at the grocery store because my arm suddenly loses power without warning.

Examiner listens for: Specific functional limitations tied to deltoid (abduction, flexion) and triceps (elbow extension) weakness; whether Grade 3, 2, or 1 strength descriptions match reported functional loss; ADL limitations that can be corroborated by treating records.

Avoid: Do not say 'I have some weakness' without quantifying it. Do not demonstrate more strength during testing than you actually have on a regular basis - inform the examiner if testing day performance is better than typical.

Fatigue and Lowered Fatigue Threshold

How to describe it: Describe how quickly your shoulder and arm fatigue with use. Provide specific timeframes: how many repetitions before weakness sets in, how many minutes of use before you must stop, how long it takes to recover. This is the DeLuca repetitive-use and post-exercise fatigue factor.

Example: After folding laundry for five minutes using my left arm, the shoulder becomes so fatigued that I have to sit down for thirty minutes before I can use it again. At work, I used to be able to type for hours; now after fifteen minutes my left arm aches and fatigues so badly I have to rest it. Even holding a phone to my ear for more than two minutes causes significant fatigue and aching.

Examiner listens for: Time-to-fatigue data; recovery time required; impact on sustained occupational activities; whether fatigue threshold is lowered on normal daily activities versus only strenuous exertion (supports DBQ field _219 versus more severe functional loss fields).

Avoid: Do not say 'I get tired sometimes.' Give the examiner specific numbers - minutes of activity, number of repetitions, hours of recovery needed. Vague fatigue descriptions are frequently under-documented.

Impairment of Coordination and Uncertainty of Movement

How to describe it: If you experience tremor, unsteadiness, or inability to guide your arm to a target accurately, describe this specifically. Uncertainty of movement means you cannot reliably place your hand where you intend. Describe whether you have dropped objects, misjudged distances, or felt that your arm 'moves on its own.'

Example: When I try to reach for a cup on a shelf, my arm shakes and I frequently knock things over because I cannot guide my hand accurately. I have burned myself on the stove because my arm jerked unexpectedly when I was stirring a pot. I cannot pour liquid into a container with my left hand because the tremor and uncertainty make it too dangerous.

Examiner listens for: Descriptions that support DBQ fields for impairment of coordination (field _236) and uncertainty of movement (field _244); these findings support the 40% severe rating tier and must be clearly documented with functional examples.

Avoid: Veterans often do not report coordination problems because they have adapted. If you have changed how you do things because your arm is unreliable, describe both the original limitation AND the adaptation.

Flare-Ups

How to describe it: Describe what triggers flare-ups, how often they occur, how long they last, and what additional functional loss occurs during a flare. Flare-ups are a key DeLuca factor and must be reported even if you are not in a flare on exam day.

Example: About three times a week I have a flare where the shoulder swells up and becomes so painful I cannot use my arm at all for 24 to 48 hours. During a flare I cannot dress myself on that side, I cannot cook, and I cannot sleep on that side even with pillows. The flare is usually triggered by any overhead activity or carrying anything heavier than a few pounds the previous day.

Examiner listens for: Trigger identification; frequency and duration; additional ROM or strength loss during flare; impact on ADLs during flare; this information should be clearly conveyed to the examiner as your worst-day condition per M21-1 guidance.

Avoid: Do not say 'I am doing okay today' without adding context about flare frequency. The examiner sees you on one day - you must volunteer worst-day information proactively.

Impact on Occupation and Daily Activities

How to describe it: Be specific about how the shoulder and arm injury limits work tasks, household tasks, recreational activities, and self-care. The DBQ field _509 asks the examiner to document the functional impact of the injury. Your reported history directly informs this field.

Example: I had to leave my job as a warehouse worker because I can no longer lift or carry. I now work a desk job but even that is limited because I cannot use my left arm on the keyboard for more than short periods. At home, my spouse helps me dress, I cannot mow the lawn, I cannot carry groceries, and I cannot play with my children because I am afraid of my arm giving out and dropping them.

Examiner listens for: Specific occupational and ADL limitations that can be connected to the DC 5303 impairments; loss of prior employment; need for assistance with self-care; use of adaptive strategies or assistive devices.

Avoid: Do not say 'I get by.' The question is not whether you survive - it is how much functional capacity you have lost. Describe what you used to be able to do versus what you can do now.