Favorable Ankylosis - 5 Digits C&P Exam Prep

Fingertip-to-Proximal Transverse Crease Gap Measurement

What it measures: The distance in centimeters between the fingertip(s) of the ankylosed digit(s) and the proximal transverse crease of the palm when the digit is flexed to maximum extent. This is the critical determinant of favorable vs. unfavorable ankylosis for index, long, ring, and little fingers.

What to expect: The examiner will ask you to flex each ankylosed finger as far as possible toward your palm, then measure the gap from your fingertip to the proximal transverse crease of the palm using a ruler or tape measure. A gap of 2 inches (5.1 cm) or less indicates favorable ankylosis; greater than 2 inches indicates unfavorable ankylosis.

Pain considerations: If attempting to flex the finger causes significant pain that limits flexion, inform the examiner immediately. Under 38 CFR 4.40, pain limiting motion can affect the functional equivalence analysis. The examiner should note if pain is preventing full attempted flexion.

Thumb Opposition Gap Measurement

What it measures: For the thumb, the gap in centimeters between the thumb pad and the fingers when the thumb attempts to oppose the fingers. Determines favorable vs. unfavorable ankylosis of CMC or IP joints of the thumb.

What to expect: The examiner will ask you to bring your thumb toward your fingers as if pinching. They will measure the gap between the thumb pad and your fingers. A gap of 2 inches (5.1 cm) or less indicates favorable ankylosis; greater than 2 inches indicates unfavorable.

Pain considerations: Pain during opposition should be stated aloud during the exam. If the thumb is fixed in a position that causes pain upon attempted use, describe the severity, frequency, and what activities trigger this pain.

Active Range of Motion (ROM) - All Digit Joints

What it measures: The degrees of active flexion and extension at each joint (MCP, PIP, DIP for fingers; CMC, MCP, IP for thumb) of all five digits. Documents which joints have reduced or absent motion.

What to expect: The examiner uses a goniometer to measure flexion and extension at each finger joint. For ankylosed joints, this will be 0 degrees active motion. For partially restricted joints, the degrees will be measured and recorded. Normal values include: MCP flexion to approximately 90-, PIP flexion to approximately 100-, DIP flexion to approximately 70-.

Pain considerations: Under the DeLuca factors (38 CFR 4.40), you must communicate if pain significantly limits your motion before the end range. State 'I am stopping because of pain at this point' rather than silently stopping. The examiner should document the degree at which pain-limited motion occurs, which can be separately rated.

Passive Range of Motion (ROM) - All Digit Joints

What it measures: The degrees of motion achievable with the examiner gently moving the joint, compared to active motion. Helps distinguish true ankylosis from pain-limited active motion.

What to expect: After active ROM, the examiner will gently hold and attempt to move your finger joints to assess if passive motion exceeds active motion. For truly ankylosed joints, passive ROM will equal active ROM (zero). Passive ROM should be documented per Correia requirements.

Pain considerations: Passive motion causing pain is a separate and important finding. State any discomfort during passive testing. Pain with passive motion can support functional loss ratings under 38 CFR 4.40.

Hand Grip Strength

What it measures: The grip strength of the affected hand compared to the contralateral (unaffected) hand, typically measured with a dynamometer or estimated clinically.

What to expect: The examiner may use a hand dynamometer or assess grip strength by having you squeeze their fingers. Both hands will be tested. Significant reduction in grip strength in the affected hand documents functional impairment related to the ankylosis.

Pain considerations: Grip testing that causes pain should be reported immediately. If you have to stop early due to pain, state this. Weakness and pain during gripping are DeLuca factors that directly affect the functional rating.

Circumference / Atrophy Measurement

What it measures: Circumference of the upper extremity at a defined location compared bilaterally to detect muscle atrophy from disuse, which can indicate severity and duration of impairment.

What to expect: The examiner may measure forearm or upper arm circumference bilaterally using a measuring tape. A difference between the affected and unaffected side indicates disuse atrophy.

Pain considerations: Disuse atrophy often accompanies chronic pain conditions where the veteran avoids using the hand. If you use your hand less due to pain, describe specific activities you avoid and why.

Angulation and Rotation Assessment

What it measures: Whether any ankylosed bone or joint is fixed in a rotated or angulated position. Rotation or angulation at an ankylosed joint is independently sufficient to classify the ankylosis as unfavorable and potentially elevate to a higher DC.

What to expect: The examiner will visually inspect and palpate each ankylosed digit to assess whether bones are aligned in normal anatomical position or deviated. Photographs or x-ray findings may be referenced.

Pain considerations: Angulated or rotated bones may cause pain in adjacent fingers (scissoring). Describe any such pain, including when it occurs and how it affects specific tasks.

50%

Favorable ankylosis of all five digits of one hand - dominant hand or higher-impact rating. Under DC 5220, favorable ankylosis of five digits of one hand is rated at 50%. Favorable ankylosis means each ankylosed joint is fixed in a neutral (0-degree) or functional position, with a fingertip-to-proximal-transverse-crease gap of 2 inches or less per digit, and no joint ankylosed with both the MCP and PIP joints fixed on the same digit.

From 38 CFR: 38 CFR 4.71a DC 5220 states: 'Five digits of one hand, favorable ankylosis of: 50 40.' The 50% rating applies to the more severe presentation under this code, typically associated with the dominant hand or maximal functional loss consistent with favorable position criteria.

40%

Favorable ankylosis of all five digits of one hand - lower presentation under DC 5220. The 40% rating under DC 5220 applies when all five digits of one hand have favorable ankylosis but the functional impairment is less severe than the 50% level, typically associated with the non-dominant hand. All favorable ankylosis criteria must still be met: gap -2 inches per digit, no dual-joint ankylosis per digit, and no angulation or rotation.

From 38 CFR: 38 CFR 4.71a DC 5220: 'Five digits of one hand, favorable ankylosis of: 50 40.' The 40% rating applies under this code as the lower threshold, typically for the non-dominant hand.

Pain

How to describe it: Describe pain at each ankylosed joint and surrounding structures accurately and specifically. Include pain location (which digit, which joint), quality (aching, burning, sharp, throbbing), intensity using a 0-10 scale, frequency (constant vs. intermittent), and what activities or positions worsen or relieve it. Be specific about worst-day pain levels vs. average daily pain.

Example: On my worst days, which happen approximately [X] times per month, the pain in my [right/left] hand at the ankylosed joints reaches a 9 out of 10. I cannot use my hand at all, and even light contact causes sharp pain. I cannot grip anything, button my shirt, or type. The pain radiates up my forearm and I sometimes drop items unexpectedly.

Examiner listens for: The examiner will listen for whether pain is present at rest, with movement, or both; whether pain limits motion (DeLuca factor); pain severity and frequency; and how pain affects specific daily activities and work tasks.

Avoid: Do not say 'it hurts a little' when your worst-day pain is severe. Do not say 'I manage fine' when you have actually stopped doing activities you used to do. The examiner needs to hear your actual worst-day experience, not an average or minimized version.

Functional Loss and Daily Activities

How to describe it: Describe specific activities you can no longer perform or have significant difficulty with due to the ankylosed digits. Be concrete: driving, cooking, typing, writing, buttoning clothing, opening jars, carrying bags, personal hygiene. State which activities you have modified, abandoned, or need assistance with.

Example: Because all five digits of my [right/left] hand are completely immobile, I cannot perform a full grip or pinch. I cannot button my shirt without using adaptive tools. I cannot write with that hand. I have had to switch all dominant-hand tasks to my other hand. I spill liquids because I cannot adequately grip a cup. I cannot safely hold tools at work.

Examiner listens for: The examiner will listen for concrete examples of functional impairment that can be mapped to DBQ fields including interference with standing, sitting, daily activities, weakened movement, less movement than normal, and disturbance of locomotion or fine motor control.

Avoid: Do not omit activities you have given up entirely - the fact that you no longer attempt an activity because it is impossible is important information. Do not say 'I can do most things' when you have made significant compensatory adaptations.

Weakness and Fatigability

How to describe it: Describe the weakness in your hand and how quickly your hand fatigues with use. Explain how weakness affects tasks requiring sustained grip or repeated fine motor movements. Describe how long you can perform hand-intensive tasks before needing to stop.

Example: My affected hand has very little grip strength. After trying to use it for more than a few minutes, the surrounding muscles ache and I lose what little function remains. I cannot hold a steering wheel or shopping bag for more than a minute or two without having to switch to my other hand or put it down.

Examiner listens for: Weakness (PUBLICDBQMUSCHANDANDFINGER_1868_WEAKNESS, _1880_WEAKNESS, _1929_WEAKNESS, _1973_WEAKNESS) and fatigability/lack of endurance (PUBLICDBQMUSCHANDANDFINGER_1928_FATIGABILITY, _1869_LACKOFENDURANCE, _1881_LACKOFENDURANCE, _1930_LACKOFENDURANCE) are all DeLuca factors the examiner will check on the DBQ.

Avoid: Do not fail to mention fatigue if it is a factor simply because you are not asked directly. Proactively state if your hand fatigues quickly or if strength drops off significantly after brief use.

Flare-Ups

How to describe it: Describe episodes when your condition is significantly worse than baseline. Include triggers (weather, overuse, prolonged activity, sleep position), frequency, duration, and what symptoms worsen during a flare. Include how flare-ups affect your ability to use the hand and how long recovery takes.

Example: I have flare-ups approximately [X] times per month, often triggered by cold weather or attempting to use my hand for extended tasks. During a flare, the joints become swollen and any contact with the ankylosed fingers causes sharp pain. During these periods I cannot use the hand at all for 1-3 days. The flare-ups significantly exceed my average daily symptoms.

Examiner listens for: The examiner will ask directly about flare-ups (RG_2B_Flare_up) and document the veteran's description (PUBLICDBQMUSCHANDANDFINGER_270_IFYESDOCUMENTTHEVETERANSDESCRIPTIONOFTHEFLAREUPSHE). This is a critical DeLuca factor that can affect functional ROM estimates during flare conditions.

Avoid: Do not underreport flare-up frequency or severity. Do not say 'they aren't that bad' if they prevent you from working or performing basic functions. If flare-ups are worse than your current day, say so explicitly.

Incoordination and Fine Motor Impairment

How to describe it: Describe difficulty with fine motor tasks that require precise finger control, including writing, typing, picking up small objects, using buttons or zippers, handling money, and using tools. Describe how the fixed position of each digit affects coordination.

Example: Because my fingers are locked in position and cannot flex or extend, I cannot pick up small objects like coins, pills, or screws. I drop items frequently because I cannot adjust my grip. I cannot type efficiently. Writing is extremely difficult and illegible. I cannot perform the precise movements required in my [work/hobby].

Examiner listens for: Incoordination is documented in multiple DBQ fields (PUBLICDBQMUSCHANDANDFINGER_1870_INCOORDINATION, _1882_INCOORDINATION, _1931_INCOORDINATION, _1975_INCOORDINATION). The examiner will listen for examples that confirm functional incoordination directly attributable to the ankylosis.

Avoid: Do not omit coordination difficulties simply because they seem minor. Even small coordination losses with ankylosed fingers can be significant in occupational settings. Describe workplace or hobby-specific impacts.

Dominant Hand and Occupational Impact

How to describe it: Clearly state whether the affected hand is your dominant hand. Describe how ankylosis of the dominant or non-dominant hand impacts your work, self-care, and quality of life. The dominant vs. non-dominant distinction affects the rating percentage under DC 5220.

Example: My [right/left] hand is my dominant hand. Because all five digits are ankylosed, I have had to relearn nearly every manual task using my non-dominant hand. I can no longer perform my occupational duties as a [job title], which require precise hand use. I have missed work, been reassigned to non-manual duties, and my income has been affected.

Examiner listens for: The examiner documents dominant hand status (RG_Dominant_Hand) and whether the condition affects the dominant or non-dominant hand, which is a key factor in the 50% vs. 40% rating determination. They will also assess functional impact on occupation (RG_8A_Functioning).

Avoid: Do not fail to clearly state your dominant hand. Do not understate occupational impact - if you have changed jobs, been demoted, lost income, or had to retire early, these are critical facts.