Ankle Foot: what evidence wins at the Board

For ankle foot appeals, how often the Board granted the issue when the record held each kind of evidence, and how often when it did not. Measured from the decisions themselves; every number carries its fraction.

What this is computed from: evidence types detected in the full text of 1,907,778 public Board of Veterans' Appeals decisions (va.gov/vetapp), joined to the issue-level outcome. The tables use only single-issue decisions with a clean parse in complete crawl years (1993–2025) — 852,152 decisions — so each evidence flag attaches to exactly one decided issue. A split is shown only when both sides have at least 30 decisions. Data build: 2026-09-02.

Service connection for Ankle Foot (n = 13,515)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record62% (759/1,230)33% (2,670/8,039)+28 pts16% (234/1,468)
Private physician opinion, letter or DBQEvidence in the record49% (875/1,790)34% (2,554/7,479)+15 pts14% (296/2,110)
Disability Benefits Questionnaire in the recordEvidence in the record48% (177/365)37% (3,252/8,904)+12 pts41% (252/619)
Third-party lay statements (spouse, buddy, employer)Evidence in the record37% (279/747)37% (3,150/8,522)+0 pts15% (130/883)
Service treatment records document the condition or injuryEvidence in the record36% (1,854/5,119)38% (1,575/4,150)-2 pts16% (971/6,180)
Service treatment records silent for the conditionEvidence in the record22% (731/3,318)45% (2,698/5,951)-23 pts11% (418/3,794)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued29% (1,019/3,455)41% (2,410/5,814)-12 pts8% (321/3,809)
Board hearing held or testimony takenProcedure39% (1,797/4,621)35% (1,632/4,648)+4 pts22% (1,379/6,224)
Social Security records in the fileEvidence in the record22% (79/361)38% (3,350/8,908)-16 pts9% (37/411)
Vocational expert or assessmentEvidence in the record29% (12/41)37% (3,417/9,228)-8 pts14% (7/49)
Medical literature or treatise citedEvidence in the record40% (378/956)37% (3,051/8,313)+3 pts30% (407/1,372)
Functional loss / DeLuca factors argued (rating cases)Theory argued32% (488/1,543)38% (2,941/7,726)-6 pts15% (268/1,833)
Presumptive service connection discussedTheory argued31% (1,353/4,326)42% (2,076/4,943)-11 pts9% (428/4,795)
Secondary service connection (38 CFR 3.310) in playTheory argued36% (1,108/3,064)37% (2,321/6,205)-1 pts24% (993/4,149)
Combat service / 1154(b) in playTheory argued38% (510/1,336)37% (2,919/7,933)+1 pts14% (230/1,588)
A medical source gave a negative nexus opinionEvidence in the record39% (1,665/4,264)35% (1,764/5,005)+4 pts28% (1,675/5,977)
No nexus opinion of recordEvidence in the record11% (69/647)39% (3,360/8,622)-28 pts8% (58/715)
VA examination or VA medical opinion obtainedEvidence in the record37% (2,894/7,870)38% (535/1,399)-1 pts28% (3,070/11,112)
Board found a VA exam or opinion inadequateHow the Board read the record47% (980/2,068)34% (2,449/7,201)+13 pts48% (1,952/4,054)
Board found the VA exam or opinion adequateHow the Board read the record13% (89/694)39% (3,340/8,575)-26 pts3% (18/716)
Board found the veteran's statements credibleHow the Board read the record73% (733/1,011)33% (2,696/8,258)+40 pts4% (47/1,063)
Board found the veteran's statements not credible or inconsistentHow the Board read the record4% (14/360)38% (3,415/8,909)-34 pts4% (14/374)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record88% (1,486/1,690)26% (1,943/7,579)+62 pts1% (11/1,701)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record3% (106/3,744)60% (3,323/5,525)-57 pts0% (6/3,758)
Duty-to-assist error foundHow the Board read the record38% (33/86)37% (3,396/9,183)+1 pts89% (761/859)
Board ordered a new exam or addendum opinionProcedure39% (526/1,345)37% (2,903/7,924)+2 pts68% (3,011/4,435)
AMA favorable finding acknowledgedProcedure66% (291/440)36% (3,138/8,829)+31 pts38% (272/718)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

Increased rating for Ankle Foot (n = 6,068)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record33% (30/92)22% (981/4,431)+10 pts15% (16/109)
Private physician opinion, letter or DBQEvidence in the record25% (89/351)22% (922/4,172)+3 pts8% (30/388)
Disability Benefits Questionnaire in the recordEvidence in the record43% (84/197)21% (927/4,326)+21 pts41% (137/336)
Third-party lay statements (spouse, buddy, employer)Evidence in the record25% (30/119)22% (981/4,404)+3 pts6% (8/131)
Service treatment records document the condition or injuryEvidence in the record21% (215/1,015)23% (796/3,508)-2 pts2% (25/1,053)
Service treatment records silent for the conditionEvidence in the record18% (21/116)22% (990/4,407)-4 pts3% (4/125)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued24% (16/67)22% (995/4,456)+2 pts5% (4/75)
Board hearing held or testimony takenProcedure24% (455/1,906)21% (556/2,617)+3 pts18% (453/2,466)
Social Security records in the fileEvidence in the record16% (30/182)23% (981/4,341)-6 pts9% (19/205)
Vocational expert or assessmentEvidence in the record21% (12/56)22% (999/4,467)-1 pts7% (4/60)
Medical literature or treatise citedEvidence in the record30% (22/74)22% (989/4,449)+8 pts28% (30/107)
Functional loss / DeLuca factors argued (rating cases)Theory argued23% (836/3,664)20% (175/859)+2 pts15% (651/4,332)
Presumptive service connection discussedTheory argued21% (16/76)22% (995/4,447)-1 pts7% (6/85)
Secondary service connection (38 CFR 3.310) in playTheory argued21% (257/1,211)23% (754/3,312)-2 pts8% (111/1,353)
Combat service / 1154(b) in playTheory argued27% (29/109)22% (982/4,414)+4 pts11% (14/132)
A medical source gave a negative nexus opinionEvidence in the record21% (64/308)22% (947/4,215)-2 pts11% (40/357)
No nexus opinion of recordEvidence in the record16% (5/32)22% (1,006/4,491)-7 pts11% (4/38)
VA examination or VA medical opinion obtainedEvidence in the record23% (971/4,306)18% (40/217)+4 pts19% (1,014/5,388)
Board found a VA exam or opinion inadequateHow the Board read the record25% (118/481)22% (893/4,042)+2 pts45% (396/888)
Board found the VA exam or opinion adequateHow the Board read the record20% (113/558)23% (898/3,965)-2 pts1% (8/567)
Board found the veteran's statements credibleHow the Board read the record43% (82/189)21% (929/4,334)+22 pts2% (4/194)
Board found the veteran's statements not credible or inconsistentHow the Board read the record22% (8/37)22% (1,003/4,486)-1 pts12% (5/42)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record70% (260/369)18% (751/4,154)+52 pts2% (7/376)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record8% (207/2,546)41% (804/1,977)-33 pts0% (1/2,553)
Duty-to-assist error foundHow the Board read the record24% (8/33)22% (1,003/4,490)+2 pts78% (131/169)
Board ordered a new exam or addendum opinionProcedure20% (110/550)23% (901/3,973)-3 pts62% (948/1,528)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

All Ankle Foot issues, every benefit type (n = 23,914)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record60% (846/1,418)34% (5,399/15,781)+25 pts15% (256/1,679)
Private physician opinion, letter or DBQEvidence in the record46% (1,132/2,468)35% (5,113/14,731)+11 pts12% (355/2,854)
Disability Benefits Questionnaire in the recordEvidence in the record49% (328/665)36% (5,917/16,534)+14 pts39% (430/1,099)
Third-party lay statements (spouse, buddy, employer)Evidence in the record37% (345/942)36% (5,900/16,257)+0 pts13% (146/1,099)
Service treatment records document the condition or injuryEvidence in the record36% (2,444/6,817)37% (3,801/10,382)-1 pts13% (1,029/7,952)
Service treatment records silent for the conditionEvidence in the record23% (812/3,542)40% (5,433/13,657)-17 pts11% (431/4,040)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued30% (1,063/3,574)38% (5,182/13,625)-8 pts9% (337/3,950)
Board hearing held or testimony takenProcedure38% (3,059/8,035)35% (3,186/9,164)+3 pts20% (2,076/10,505)
Social Security records in the fileEvidence in the record25% (166/660)37% (6,079/16,539)-12 pts10% (75/754)
Vocational expert or assessmentEvidence in the record32% (65/205)36% (6,180/16,994)-5 pts10% (23/229)
Medical literature or treatise citedEvidence in the record40% (442/1,118)36% (5,803/16,081)+3 pts29% (472/1,602)
Functional loss / DeLuca factors argued (rating cases)Theory argued36% (2,502/7,002)37% (3,743/10,197)-1 pts13% (1,080/8,127)
Presumptive service connection discussedTheory argued31% (1,407/4,489)38% (4,838/12,710)-7 pts9% (440/4,977)
Secondary service connection (38 CFR 3.310) in playTheory argued35% (1,807/5,122)37% (4,438/12,077)-1 pts19% (1,200/6,461)
Combat service / 1154(b) in playTheory argued38% (590/1,547)36% (5,655/15,652)+2 pts14% (255/1,836)
Military sexual trauma / personal assault claimTheory argued27% (8/30)36% (6,237/17,169)-10 pts6% (2/35)
A medical source gave a negative nexus opinionEvidence in the record38% (1,854/4,899)36% (4,391/12,300)+2 pts27% (1,790/6,739)
No nexus opinion of recordEvidence in the record11% (80/714)37% (6,165/16,485)-26 pts8% (65/792)
VA examination or VA medical opinion obtainedEvidence in the record36% (5,441/14,999)37% (804/2,200)-0 pts23% (4,534/19,801)
Board found a VA exam or opinion inadequateHow the Board read the record45% (1,316/2,935)35% (4,929/14,264)+10 pts46% (2,531/5,515)
Board found the VA exam or opinion adequateHow the Board read the record23% (345/1,501)38% (5,900/15,698)-15 pts2% (27/1,535)
Board found the veteran's statements credibleHow the Board read the record69% (942/1,359)33% (5,303/15,840)+36 pts4% (57/1,422)
Board found the veteran's statements not credible or inconsistentHow the Board read the record7% (31/429)37% (6,214/16,770)-30 pts4% (19/448)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record86% (2,217/2,582)28% (4,028/14,617)+58 pts1% (20/2,603)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record7% (545/7,371)58% (5,700/9,828)-51 pts0% (8/7,401)
Duty-to-assist error foundHow the Board read the record31% (70/229)36% (6,175/16,970)-6 pts79% (961/1,212)
Board ordered a new exam or addendum opinionProcedure37% (836/2,250)36% (5,409/14,949)+1 pts65% (4,389/6,753)
AMA favorable finding acknowledgedProcedure64% (308/485)36% (5,937/16,714)+28 pts36% (281/775)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

Reading these tables honestly

Association, not cause. A positive nexus opinion appears in the records of granted appeals far more often than in denied ones. That does not mean any letter wins; it means the Board grants when the evidence supports the claim, and a nexus opinion is how that support usually reaches the file.

Appeals are not claims. Every decision here is an appealed denial. Grant rates at the Board say nothing about the share of initial claims VA grants.

Findings are outcomes in disguise. Rows under "how the Board read the record" — credibility, benefit of the doubt, an inadequate exam — describe how the judge decided, not evidence to gather. They are shown because they say which arguments the Board actually reaches for.

Detection is by text pattern. Each evidence type is found by reading the decision for finding-shaped language with negation handling; precision was read on samples before publication and is stated per feature in the method notes below. Expect a few percent of misclassified rows, not zero.

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See also: Ankle Foot decisions · all conditions · outcome rates.