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Jeon et al: Distal femoral shortening osteotomy for managing irreducible hips during total hip replacement in four dogs with severe luxoid hips
Veterinary Surgery 6, 2025

🔍 Key Findings

  • Distal femoral shortening osteotomy (DFSO) enabled prosthesis reduction in all 4 dogs with irreducible luxoid hips undergoing total hip replacement.
  • Median femoral shortening ratio was 13.8% (range: 10.7–15.3%) based on intraoperative tension needed for prosthesis reduction.
  • Bone union was achieved in all cases post-DFSO, indicating good healing potential.
  • Two major complications occurred: one prosthetic luxation and one aseptic stem loosening requiring explantation.
  • One intraoperative fracture of the greater trochanter occurred during trial reduction before DFSO.
  • DFSO did not result in neurovascular injury, even in cases with significant femoral head displacement (>4 cm).
  • Radiographic planning with FHD index and intraoperative assessment were crucial for determining DFSO necessity.
  • DFSO avoids complications linked to subtrochanteric osteotomy by preserving proximal femoral anatomy and allowing secure distal fixation.

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← Articles

Jeon et al: Distal femoral shortening osteotomy for managing irreducible hips during total hip replacement in four dogs with severe luxoid hips
Veterinary Surgery 6, 2025

🔍 Key Findings

  • Distal femoral shortening osteotomy (DFSO) enabled prosthesis reduction in all 4 dogs with irreducible luxoid hips undergoing total hip replacement.
  • Median femoral shortening ratio was 13.8% (range: 10.7–15.3%) based on intraoperative tension needed for prosthesis reduction.
  • Bone union was achieved in all cases post-DFSO, indicating good healing potential.
  • Two major complications occurred: one prosthetic luxation and one aseptic stem loosening requiring explantation.
  • One intraoperative fracture of the greater trochanter occurred during trial reduction before DFSO.
  • DFSO did not result in neurovascular injury, even in cases with significant femoral head displacement (>4 cm).
  • Radiographic planning with FHD index and intraoperative assessment were crucial for determining DFSO necessity.
  • DFSO avoids complications linked to subtrochanteric osteotomy by preserving proximal femoral anatomy and allowing secure distal fixation.

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Multiple Choice Questions on this study

In Jeon 2025 et al., on distal femoral shortening, what was the **median femoral shortening ratio** required to achieve prosthesis reduction?

A. 7.5%
B. 10.2%
C. 13.8%
D. 16.1%
E. 18.4%

Answer: 13.8%

Explanation: The median femoral shortening length ratio was 13.8% (range: 10.7–15.3%) to enable prosthesis reduction.
In Jeon 2025 et al., on distal femoral shortening, what was the **outcome regarding neurovascular complications** post-DFSO?

A. One case of femoral nerve palsy
B. All dogs developed mild sciatic neuropraxia
C. No neurovascular complications were observed
D. Transient nerve deficits in two dogs
E. Chronic neuropathic pain in one dog

Answer: No neurovascular complications were observed

Explanation: Despite >4 cm displacement in some cases, no neurovascular damage was reported after DFSO.
In Jeon 2025 et al., on distal femoral shortening, what was the **main indication** for performing DFSO during THR in dogs with luxoid hips?

A. To address proximal femoral deformity
B. To reduce hip luxation postoperatively
C. To manage irreducible prostheses when standard tension-relieving techniques failed
D. To treat aseptic loosening of femoral stems
E. To prevent sciatic nerve injury during THR

Answer: To manage irreducible prostheses when standard tension-relieving techniques failed

Explanation: Intraoperative inability to reduce the prosthesis using conventional methods triggered the need for DFSO.
In Jeon 2025 et al., on distal femoral shortening, which **advantage of DFSO over subtrochanteric osteotomy** is highlighted in dogs?

A. Lower cost and faster recovery
B. Improved proximal femoral torsion
C. Easier acetabular cup alignment
D. Preservation of proximal femoral anatomy for stable fixation
E. Allows larger stem size

Answer: Preservation of proximal femoral anatomy for stable fixation

Explanation: DFSO avoids disrupting critical proximal structures needed for stem fixation.
In Jeon 2025 et al., on distal femoral shortening, which **complication was observed intraoperatively** during the THR procedure?

A. Femoral stem loosening
B. Fracture of the greater trochanter
C. Aseptic prosthesis loosening
D. Prosthetic luxation
E. Sciatic nerve palsy

Answer: Fracture of the greater trochanter

Explanation: One intraoperative complication occurred: a greater trochanter fissure during trial reduction prior to DFSO.

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