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De Moya et al: Treatment of antebrachial deformities secondary to premature closure of the distal radial physis using circular external skeletal fixation and distraction osteogenesis in skeletally immature dogs
Veterinary Surgery 6, 2025

🔍 Key Findings

  • CESF with distraction osteogenesis restored elbow congruity and normalized aLDRA in skeletally immature dogs with PCDRP.
  • Radial head subluxation was eliminated in all dogs, and elbow incongruity reduced significantly (from 6.1 mm to 0.3 mm, p <.01).
  • Mean radial lengthening of 22.6 mm (∼11% of normal length) was achieved, but only 80% of recorded distraction translated to length gain.
  • Major complications occurred in 2/12 dogs: one with permanent carpal contracture, one with radial fracture at wire tract.
  • Minor complications (e.g., carpal pain, restricted extension, synostosis, pin tract issues) were noted in 10/12 dogs but generally resolved.
  • Owner surveys (8/12 dogs) reported good to excellent long-term function, even up to 6 years post-op.
  • Radial valgus deformities were moderate (mean 15°) and less severe than deformities from ulnar physeal closure.
  • Surgical strategy included staged distraction, with radial or combined radius/ulna distraction guided by fluoroscopy and adjusted per case.

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← Articles

De Moya et al: Treatment of antebrachial deformities secondary to premature closure of the distal radial physis using circular external skeletal fixation and distraction osteogenesis in skeletally immature dogs
Veterinary Surgery 6, 2025

🔍 Key Findings

  • CESF with distraction osteogenesis restored elbow congruity and normalized aLDRA in skeletally immature dogs with PCDRP.
  • Radial head subluxation was eliminated in all dogs, and elbow incongruity reduced significantly (from 6.1 mm to 0.3 mm, p <.01).
  • Mean radial lengthening of 22.6 mm (∼11% of normal length) was achieved, but only 80% of recorded distraction translated to length gain.
  • Major complications occurred in 2/12 dogs: one with permanent carpal contracture, one with radial fracture at wire tract.
  • Minor complications (e.g., carpal pain, restricted extension, synostosis, pin tract issues) were noted in 10/12 dogs but generally resolved.
  • Owner surveys (8/12 dogs) reported good to excellent long-term function, even up to 6 years post-op.
  • Radial valgus deformities were moderate (mean 15°) and less severe than deformities from ulnar physeal closure.
  • Surgical strategy included staged distraction, with radial or combined radius/ulna distraction guided by fluoroscopy and adjusted per case.

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Multiple Choice Questions on this study

In De Moya 2025 et al., on antebrachial deformity correction, which surgical maneuver was used to correct antebrachiocarpal incongruency?

A. Dorsal carpal release
B. Flexor tendon lengthening
C. Radioulnar ligament transection
D. Partial carpal arthrodesis
E. Capitate osteotomy

Answer: Radioulnar ligament transection

Explanation: The radioulnar ligament was transected to allow mobility of the distal radial segment for angular correction and carpal congruity.
In De Moya 2025 et al., on antebrachial deformity correction, which of the following was a **major complication** reported?

A. Persistent loss of carpal extension
B. Radioulnar synostosis
C. Carpal flexor contracture
D. Serosanguinous pin tract drainage
E. Temporary carpal pain

Answer: Carpal flexor contracture

Explanation: One major complication was a permanent carpal flexor contracture; minor complications included synostosis, pin tract drainage, and carpal stiffness.
In De Moya 2025 et al., on antebrachial deformity correction, what was the mean total radial lengthening achieved after distraction osteogenesis?

A. 12 mm
B. 17 mm
C. 22.6 mm
D. 28 mm
E. 34 mm

Answer: 22.6 mm

Explanation: Mean lengthening was 22.6 mm, representing ~11% increase compared to the contralateral radius.
In De Moya 2025 et al., on antebrachial deformity correction, what was the most common radiographic outcome following CESF and distraction osteogenesis?

A. Complete resolution of elbow osteoarthritis
B. Improvement in aLDRA within normal range
C. Overcorrection into radial varus
D. Persistent radial head subluxation
E. Failure of osteotomy union

Answer: Improvement in aLDRA within normal range

Explanation: aLDRA improved significantly from 71.6° to 85.6°, entering normal range; radial head subluxation and elbow incongruity were also resolved.
In De Moya 2025 et al., on antebrachial deformity correction, what percentage of the recorded distraction translated to actual radial lengthening?

A. 60%
B. 70%
C. 80%
D. 90%
E. 100%

Answer: 80%

Explanation: Only 80% of the distraction measured on the fixator resulted in actual bone lengthening, likely due to soft tissue and frame mechanics.

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