Ring or Little Finger Ankylosis C&P Exam Prep

Fingertip-to-Proximal Transverse Palmar Crease Gap (Ankylosis Position Test)

What it measures: The distance in centimeters between the ankylosed fingertip and the proximal transverse crease of the palm when the finger is flexed as far as possible. This is the single most critical measurement determining favorable vs. unfavorable ankylosis classification.

What to expect: The examiner will ask you to bend your ankylosed finger as far as you are able toward the palm, then measure the straight-line gap between the tip of the finger and the proximal transverse palmar crease using a ruler or goniometer. This is performed on the affected digit(s). Both active and passive attempts may be assessed.

Pain considerations: If moving the finger toward the palm causes pain, state this clearly during the measurement. Pain during the attempt is relevant to functional loss even if the gap appears small.

Active Range of Motion - Ring/Little Finger MCP and PIP Joints

What it measures: The degree of voluntary flexion and extension at the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints of the affected finger(s). Normal MCP flexion is approximately 90 degrees; PIP flexion is approximately 100 degrees.

What to expect: You will be asked to bend (flex) and straighten (extend) each joint of the affected finger as far as possible. The examiner will record the degrees of motion. For ankylosis, motion will typically be zero or near-zero at the fused joint.

Pain considerations: Per DeLuca v. Brown, pain on motion must be considered and can support a higher effective rating even when measured ROM appears to be within a compensable range for other digits. Clearly state when each motion causes pain.

Passive Range of Motion - Ring/Little Finger

What it measures: The range of motion achievable when the examiner gently moves the finger without your muscle effort. Per Correia requirements, passive ROM must be compared to active ROM.

What to expect: The examiner will gently move your finger through its range without you actively contracting muscles. This is compared to active ROM to assess the degree of structural fixation vs. pain-limited motion.

Pain considerations: Pain during passive motion is significant clinical information. Report it accurately and describe its character (sharp, aching, burning) and location (which joint).

Repetitive Use Testing

What it measures: Whether repeated use of the hand causes additional loss of range of motion, increased pain, weakness, or fatigue - a key DeLuca factor.

What to expect: The examiner may ask you to perform repetitive gripping, pinching, or finger movements and then reassess ROM or symptoms. More commonly, you will be asked to describe how your condition worsens with use.

Pain considerations: Describe the full DeLuca picture: pain with use, fatigue after sustained use, weakness that develops over time, and how these affect your ability to complete tasks.

Hand Grip Strength

What it measures: The overall strength of hand grip, which may be reduced due to ankylosis of the ring or little finger and their role in grip mechanics.

What to expect: The examiner may use a dynamometer or manual assessment to evaluate grip strength bilaterally (both hands) for comparison. The ring and little fingers are primary grip contributors - their ankylosis directly impacts grip force.

Pain considerations: Grip testing can be painful. If it causes pain, state this clearly. Do not grip harder than you can do without causing yourself pain - accuracy is more important than effort.

Joint Position Assessment (Ankylosis Position)

What it measures: The angle at which the ankylosed joint is fixed - whether it is in a neutral/functional position (favorable) or in extension, full flexion, rotation, or angulation (unfavorable).

What to expect: The examiner will observe and document the fixed position of the ankylosed MCP and/or PIP joint. Rotation and angulation will be specifically noted. This directly determines favorable vs. unfavorable classification and whether an amputation equivalent may apply.

Pain considerations: The fixed position itself may cause chronic pain by placing constant stress on surrounding structures. Describe any ongoing pain even at rest.

Muscle Atrophy Assessment

What it measures: Whether there is muscle wasting (atrophy) in the hand or fingers due to disuse from the ankylosis.

What to expect: The examiner may measure the circumference of the forearm or hand and compare bilaterally, or visually assess for thenar/hypothenar atrophy.

Pain considerations: Atrophy-related weakness can contribute to pain with use as remaining muscles overcompensate. Describe this pattern if present.

0%

Ankylosis of the ring finger and/or little finger - both favorable and unfavorable ankylosis are rated at 0% under DC 5227. However, the examiner must evaluate whether: (1) an amputation equivalent rating under DC 5153-5156 would yield a higher evaluation (particularly when both MCP and PIP joints are ankylosed in an unfavorable position, with extension/full flexion, rotation, or angulation), and (2) an additional evaluation is warranted for limitation of motion of adjacent digits or interference with overall hand function.

From 38 CFR: 38 CFR 4.71a DC 5227: 'Ring or little finger, ankylosis of: Unfavorable or favorable 0 0. Note: Also consider whether evaluation as amputation is warranted and whether an additional evaluation is warranted for resulting limitation of motion of other digits or interference with overall function of the hand.'

Joint Immobility and Fixed Position

How to describe it: Describe the specific finger(s) affected, which joint(s) are fixed, and the position the finger is locked in. Be precise: 'My right little finger is completely locked at the knuckle closest to my hand - the MCP joint - and it sits bent at about 30 degrees and will not move at all. I cannot straighten it or bend it further regardless of how hard I try or how much it hurts to try.'

Example: On my worst days, even attempting to move the finger sends sharp pain through the entire hand, and the stiffness seems to spread so that my ring finger also becomes difficult to move. I cannot close my hand into a full fist because the locked little finger physically blocks adjacent fingers.

Examiner listens for: Specificity about which joint is fused, whether motion is truly zero, whether the fusion interferes with adjacent digit motion, and whether the fixed position causes functional interference during daily tasks.

Avoid: Do not say 'it's a little stiff' when the joint is truly ankylosed. If there is zero motion, say 'I have no movement at all at that joint - it does not move even a fraction of a degree.'

Fingertip-to-Palm Gap and Functional Grip

How to describe it: Describe how far your finger can reach toward your palm when you try to make a fist, and how this affects your ability to grip objects. 'When I try to curl my ring finger toward my palm, the fingertip stops more than two inches away from the crease at the base of my fingers. I cannot wrap my finger around objects - I cannot grip a hammer handle, a steering wheel, or a full water bottle with a normal grip.'

Example: On bad days my grip is so weak that I drop items I should be able to hold - cups, tools, even a pen. My ring finger and little finger contribute nothing to my grip because they cannot curl properly. I have adapted by using only my thumb and first two fingers, which fatigues those fingers and causes additional pain.

Examiner listens for: The actual functional gap between fingertip and palm, specific grip-dependent activities the veteran cannot perform, and how the fixed finger position interacts with adjacent digits.

Avoid: Do not demonstrate your best possible grip at the exam if it does not represent your typical function. If your grip is normally weak and painful, do not push through the pain to appear more capable.

Pain - At Rest, With Motion, and With Use (DeLuca Factor)

How to describe it: Describe pain in three contexts: at rest, when attempting to move the ankylosed finger, and during activities that require grip or finger use. Use specific descriptors: location, character (sharp, aching, burning, throbbing), intensity (0-10 scale), and what makes it worse or better.

Example: On my worst days, my little finger throbs constantly even when I am sitting still - a 5 or 6 out of 10 at rest. When I accidentally bump it or try to grip something, the pain spikes to an 8 or 9 and radiates up into my hand and wrist. I have been woken from sleep by the pain when I rolled onto my hand. On these days I cannot use my right hand for anything that requires gripping - I cannot type, button my shirt, or hold a cup of coffee.

Examiner listens for: Pain that is present at rest (not just with movement), pain that limits the duration of activities, pain that wakes the veteran from sleep, and pain that has changed the veteran's daily routine.

Avoid: Veterans often say 'it's not that bad' or minimize pain to appear stoic. The examiner is required to document pain on motion under DeLuca. If it hurts, say so every time it hurts during the exam.

Weakness and Fatigability (DeLuca Factor)

How to describe it: Describe reduced grip strength and how quickly your hand fatigues with use. Quantify: 'I can grip a tool for about 5 minutes before my hand weakens so much I have to stop. After 20 minutes of rest, I might be able to do another 5 minutes. I cannot sustain grip for any extended period.'

Example: On my worst days I cannot hold a full cup of coffee without it feeling like my hand will give out. Even tying my shoes requires me to stop and rest my hand mid-task because of the weakness. Typing for more than a few minutes causes my entire hand to ache and the grip muscles to cramp.

Examiner listens for: How quickly weakness develops with use, whether weakness is present even at low-demand tasks, and how weakness has changed the veteran's work and daily life.

Avoid: Do not say 'my grip is fine' if you have significantly adapted your activities to avoid gripping. Compensation strategies mask the true impairment.

Incoordination and Fine Motor Impairment (DeLuca Factor)

How to describe it: Describe any difficulty with fine motor tasks that require the ring or little finger: buttoning clothes, typing, picking up small objects, playing musical instruments, handling money. 'I can no longer button the cuffs of my shirt with my right hand. I have dropped my phone multiple times because my little finger cannot properly support objects in my palm. I can no longer play guitar because my little finger is locked in a position that prevents proper chord formation.'

Example: On bad days, tasks requiring fine motor control are nearly impossible. Writing by hand causes immediate cramping. I have to use my other hand for almost everything that previously required both hands.

Examiner listens for: Specific fine motor tasks impaired, whether the impairment is bilateral or unilateral, and how impairment affects occupational tasks.

Avoid: Do not minimize fine motor impairment by demonstrating your most careful slow attempt during the exam. Your typical daily performance - rushed, distracted, fatigued - is what matters.

Flare-Ups (DeLuca Factor)

How to describe it: Describe the frequency, duration, triggers, and severity of episodes where your symptoms are significantly worse than baseline. 'I have flare-ups about 2-3 times per week, usually triggered by overusing my hand or by cold weather. During a flare-up, the entire hand swells, the pain increases to a 7-8 out of 10, and I cannot use my hand at all for 24-48 hours. I have missed work and been unable to perform household tasks during these episodes.'

Example: My worst flare-up this year lasted four days. I could not prepare my own meals, type, or drive. I required help with basic daily tasks. My hand swelled noticeably and heat from even warm water caused intense pain.

Examiner listens for: Frequency and duration of flare-ups, specific triggers, what makes flare-ups better, whether flare-ups cause additional loss of motion beyond baseline, and functional impact during flare-ups.

Avoid: If you currently have relatively mild symptoms on exam day, explicitly tell the examiner: 'Today is a better day than usual. My condition fluctuates significantly and this exam does not represent my typical function.'

Interference with Adjacent Digits and Overall Hand Function

How to describe it: The DC 5227 note specifically instructs examiners to consider whether additional ratings are warranted for limitation of motion of other digits or interference with overall hand function. Clearly describe how your ankylosed ring or little finger limits the motion or use of adjacent fingers: 'My locked little finger physically prevents my ring finger from fully flexing because they catch on each other. My ring finger range of motion is also limited as a result.'

Example: When my little finger is fixed in a semi-extended position, it forces my ring finger into an unnatural angle when I try to grip anything. Both fingers are then painful and my grip is less than half of normal.

Examiner listens for: Whether the ankylosed digit restricts motion or function of adjacent digits, whether overall hand function (grip, pinch, opposition) is compromised beyond just the ankylosed digit.

Avoid: Do not assume the examiner will independently notice secondary effects on adjacent digits. Explicitly describe the cascading functional impact.