ISSN 2398-2977      

Bone: slab fracture repair - lag screw

pequis

Introduction

Uses

Advantages

  • Similar to all internal fixation repair of equine fractures and including:
    • Good anatomic realignment of the fracture.
    • Internal compression of the fracture decreasing fracture healing time and improving quality of bone repair (primary bone union).
    • Decreased chances of post-repair secondary osteoarthritis of the affected joints.
  • The carpal slab fixation techniques using arthroscopic guidance increase visualization of the fracture site, allow it to be debrided, guide anatomic alignment, and ensure lavage of the joint post-repair to minimize disruption of joint homeostasis.
  • Minimal soft tissue disruption with arthroscopic and radiographic-guided repair techniques.

Disadvantages

  • More expensive than conservative treatment.
  • Guided repair techniques require slightly higher surgical skill levels than open arthrotomy repair.

Requirements

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Preparation

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Procedure

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Aftercare

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Prognosis

Carpal fractures

  • Good - for smaller or non-displaced fractures - 70-75% return to racing.
  • Fair - for large or displaced fractures.
  • Standardbreds seem to have a slightly better prognosis than Thoroughbred horses from returning to racing.
  • Many horses return to racing at a lower level.

Tarsal fractures

  • Success rates of up to 75% have been reported for both central and third tarsal bone slab fractures for return to racing.
  • However, a number of them develop some degree of osteoarthritis Musculoskeletal: osteoarthritis (joint disease) of the small tarsal joints and require intra-articular medication.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Barker W H & Wright I M (2017) Slab fractures of the third tarsal bone: Minimally invasive repair using a single 3.5 mm cortex screw placed in lag fashion in 17 Thoroughbred racehorses. Equine Vet J 49 (2), 216-220 PubMed.
  • Hirsch J E et al (2007) Clinical evaluation of a titanium, headless variable-pitched tapered cannulated compression screw for repair of frontal plane slab fractures of the third carpal bone in thoroughbred racehorses. Vet Surg 36 (2), 178-84 PubMed.
  • Murray R C et al (1998) Biomechanical comparison of the Herbert and AO cortical bone screws for compression of an equine third carpal bone dorsal plane slab osteotomy. Vet Surg 27 (1), 49-55 PubMed.
  • Martin G S, Haynes P F & McClure J R (1988) Effect of third carpal slab fracture and repair on racing performance in Thoroughbred horses - 31 cases (1977-1984). JAVMA 193 (1), 107-110 PubMed.
  • Richardson D W (1986) A technique for arthroscopic repair of third carpal bone slab fractures in horses. JAVMA 188 (3), 288-291 PubMed.

Related Images

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!