{"id":1971,"date":"2025-02-05T11:33:03","date_gmt":"2025-02-05T11:33:03","guid":{"rendered":"https:\/\/suzhouyoubest.com\/?p=1971"},"modified":"2025-02-05T11:33:04","modified_gmt":"2025-02-05T11:33:04","slug":"surgical-techniques-treatment-of-metacarpal-and-phalangeal-fractures-with-intramedullary-headless-compression-screw-internal-fixation","status":"publish","type":"post","link":"https:\/\/suzhouyoubest.com\/zh\/surgical-techniques-treatment-of-metacarpal-and-phalangeal-fractures-with-intramedullary-headless-compression-screw-internal-fixation\/","title":{"rendered":"Surgical techniques | Treatment of metacarpal and phalangeal fractures with intramedullary headless compression screw internal fixation"},"content":{"rendered":"

Intramedullary Headless Compression Screws for Metacarpal and Phalangeal Fractures: A Surgical Guide<\/strong><\/p>\n\n\n\n

Introduction: A Revolutionary Fixation Approach<\/strong><\/p>\n\n\n\n

Metacarpal and phalangeal fractures<\/strong> are among the most common hand injuries<\/strong>, often resulting from trauma, falls, or sports-related accidents<\/strong>. Depending on the fracture type\u2014simple transverse, comminuted, or open fractures<\/strong>\u2014various fixation methods exist, including plate and screw fixation, percutaneous K-wire stabilization, or splinting<\/strong>. However, complications such as joint stiffness, flexion-extension limitations, and rotational deformities<\/strong> remain a challenge.<\/p>\n\n\n\n

Enter intramedullary headless compression screws (IMCS)<\/strong>\u2014a minimally invasive, biomechanically superior<\/strong> solution that promotes early mobilization<\/strong> and reduces soft tissue irritation. This technique is gaining traction in clinical practice<\/strong> due to its ability to maintain fracture stability while preserving soft tissue integrity.<\/p>\n\n\n\n

In this guide, we analyze two key studies<\/strong> and provide a step-by-step breakdown<\/strong> of how IMCS fixation is applied to metacarpal and phalangeal fractures.<\/p>\n\n\n\n

IMCS Fixation for Metacarpal Fractures<\/strong><\/p>\n\n\n\n

Indications for Use<\/strong><\/p>\n\n\n\n

IMCS is an excellent choice for:<\/p>\n\n\n\n

\u2714 Transverse metacarpal shaft fractures<\/strong><\/p>\n\n\n\n

\u2714 Non-comminuted subcapital fractures<\/strong><\/p>\n\n\n\n

\u2714 Short oblique fractures<\/strong><\/p>\n\n\n\n

\u26a0 Preoperative Tip<\/strong>: Always measure the screw length and diameter<\/strong> accurately to ensure proper fixation.<\/p>\n\n\n\n

Surgical Technique: Step-by-Step<\/strong><\/p>\n\n\n\n

Step 1: Closed Reduction<\/strong><\/p>\n\n\n\n

\u2022 Flex the metacarpophalangeal (MCP) joint to 90\u00b0<\/strong>.<\/p>\n\n\n\n

\u2022 Make a 3.0mm longitudinal incision<\/strong> over the MCP joint.<\/p>\n\n\n\n

Step 2: Guidewire Insertion<\/strong><\/p>\n\n\n\n

\u2022 Under fluoroscopy, insert a guidewire along the metacarpal axis<\/strong>.<\/p>\n\n\n\n

\u2022 The entry point<\/strong> should be on the dorsal aspect of the metacarpal head<\/strong>, optimizing screw placement.<\/p>\n\n\n\n

Step 3: IMCS Insertion<\/strong><\/p>\n\n\n\n

\u2022 Insert a 3.0mm headless compression screw<\/strong> into the metacarpal shaft.<\/p>\n\n\n\n

\u2022 Ensure the threads fully bridge the fracture site<\/strong> to maximize compression.<\/p>\n\n\n\n

\ud83d\udc49 Pro Tip<\/strong>: Some studies recommend placing the screw up to the isthmus<\/strong> for optimal stabilization. Even in the fifth metacarpal<\/strong>, where a 5.0mm screw<\/strong> could fit, a 3.0mm screw<\/strong> is preferred to minimize cartilage damage.<\/p>\n\n\n\n

Alternative: \u201cY\u201d Configuration Fixation for Comminuted Fractures<\/strong><\/p>\n\n\n\n

For comminuted fractures<\/strong>, a single compression screw may compromise stability. Instead, use:<\/p>\n\n\n\n

\ud83d\udd39 Two screws (3.0mm and 2.2mm)<\/strong> to create a triangular support structure<\/strong>.<\/p>\n\n\n\n

\ud83d\udd39 This prevents collapse and enhances structural integrity<\/strong>.<\/p>\n\n\n\n

IMCS Fixation for Proximal Phalanx Fractures<\/strong><\/p>\n\n\n\n

Technique 1: Intra-articular Approach<\/strong><\/p>\n\n\n\n

Surgical Steps<\/strong><\/p>\n\n\n\n

1. MCP Joint Incision<\/strong>: Make a 3.0mm incision<\/strong> at the MCP joint.<\/p>\n\n\n\n

2. Guidewire Placement<\/strong>:<\/p>\n\n\n\n

\u2022 Flex MCP to 70\u00b0<\/strong>, insert a guidewire dorsally under fluoroscopy.<\/p>\n\n\n\n

\u2022 Dorsal subluxation<\/strong> of the phalanx may facilitate guidewire insertion.<\/p>\n\n\n\n

3. Compression Screw Placement<\/strong>: Insert a 3.0mm or 2.2mm headless compression screw<\/strong>.<\/p>\n\n\n\n

\ud83d\udccc Alternative<\/strong>: If joint subluxation is difficult<\/strong>, place the guidewire at a slight oblique angle<\/strong> without penetrating the joint.<\/p>\n\n\n\n

Technique 2: Antegrade Intra-articular Fixation<\/strong><\/p>\n\n\n\n

When proximal phalanx subluxation is insufficient<\/strong> or the guidewire trajectory is unfavorable<\/strong>, use:<\/p>\n\n\n\n

\ud83d\udd39 A 3.0mm incision at the MCP joint<\/strong>.<\/p>\n\n\n\n

\ud83d\udd39 Flex the joint to 90\u00b0<\/strong> and insert the guidewire dorsally through the metacarpal head.<\/p>\n\n\n\n

\ud83d\udd39 Advance the screw from the metacarpal head into the phalangeal base<\/strong>.<\/p>\n\n\n\n

\u26a0 Drawback<\/strong>: This approach may damage the articular cartilage<\/strong> of the metacarpal head.<\/p>\n\n\n\n

Technique 3: Retrograde Intra-articular Fixation<\/strong><\/p>\n\n\n\n

Alternatively, insert the IMCS in a retrograde manner<\/strong>:<\/p>\n\n\n\n

\u2714 Make a 3.0mm incision<\/strong> at the proximal interphalangeal (PIP) joint.<\/p>\n\n\n\n

\u2714 Flex PIP to 90\u00b0<\/strong>, insert a guidewire along the long axis of the phalanx.<\/p>\n\n\n\n

\u2714 Advance the IMCS to the phalangeal base<\/strong>.<\/p>\n\n\n\n

\ud83d\udc49 While technically simpler, this method carries a higher risk of extensor tendon injury<\/strong> and cartilage damage<\/strong>.<\/p>\n\n\n\n

Technique 4: Dual Antegrade Intra-articular Fixation<\/strong><\/p>\n\n\n\n

For comminuted fractures<\/strong>, single-screw fixation may be unstable. Instead, use:<\/p>\n\n\n\n

\ud83d\udd39 Two antegrade IMCS<\/strong> to replicate the \u201cY\u201d fixation method<\/strong>.<\/p>\n\n\n\n

\ud83d\udd39 First screw: Insert at a shallow angle along the phalanx\u2019s long axis<\/strong>.<\/p>\n\n\n\n

\ud83d\udd39 Second screw: Place at a steeper angle for additional support<\/strong>.<\/p>\n\n\n\n

\u26a0 Caution<\/strong>: Over-compression may lead to shortening of the phalanx<\/strong>\u2014in such cases, a single-screw technique<\/strong> may be preferable.<\/p>\n\n\n\n

IMCS Fixation for Middle Phalanx Fractures<\/strong><\/p>\n\n\n\n

Technique 1: Extra-articular Antegrade Fixation<\/strong><\/p>\n\n\n\n

\u2022 In transverse middle phalanx fractures<\/strong>, PIP joint subluxation may be challenging.<\/p>\n\n\n\n

\u2022 Insert a guidewire obliquely from the ulnar base<\/strong> of the middle phalanx.<\/p>\n\n\n\n

\u2022 Insert a 2.2mm IMCS<\/strong> for stable fixation.<\/p>\n\n\n\n

Technique 2: Intra-articular Antegrade Fixation<\/strong><\/p>\n\n\n\n

If the guidewire trajectory is inadequate<\/strong>, use a PIP joint flexion to 90\u00b0<\/strong> approach.<\/p>\n\n\n\n

\u2714 Insert a guidewire from the dorsal phalanx head<\/strong> to temporarily fix the PIP joint<\/strong>.<\/p>\n\n\n\n

\u2714 Insert a 2.2mm IMCS<\/strong> into the middle phalanx.<\/p>\n\n\n\n

Technique 3: Retrograde Intra-articular Fixation<\/strong><\/p>\n\n\n\n

Alternatively, insert a 2.2mm IMCS via the distal interphalangeal (DIP) joint<\/strong>.<\/p>\n\n\n\n

\u26a0 Risks<\/strong>:<\/p>\n\n\n\n

\u2022 Increased risk of extensor tendon damage<\/strong>.<\/p>\n\n\n\n

\u2022 Higher probability of articular cartilage injury<\/strong> due to DIP joint\u2019s small surface area.<\/p>\n\n\n\n

Conclusion: Is IMCS Fixation the Best Option?<\/strong><\/p>\n\n\n\n

\u2714 IMCS provides a reliable alternative<\/strong> to K-wire and plate fixation<\/strong>, offering minimal soft tissue irritation<\/strong> and reduced joint stiffness<\/strong>.<\/p>\n\n\n\n

\u2714 Indications<\/strong>: Best suited for transverse metacarpal fractures, non-comminuted subcapital fractures, and short oblique fractures<\/strong>.<\/p>\n\n\n\n

\u2714 Limitations<\/strong>: Avoid use in open growth plates, infected fractures, or subchondral fractures<\/strong>.<\/p>\n\n\n\n

\u2714 For comminuted fractures<\/strong>, dual-screw fixation<\/strong> (Y-configuration) prevents shortening and rotational instability<\/strong>.<\/p>\n\n\n\n

\ud83d\udccc Clinical Pearl<\/strong>: IMCS is usually not removed<\/strong> unless protrusion, infection, or screw breakage<\/strong> occurs.<\/p>\n\n\n\n

\ud83d\udd17 For further reading on IMCS techniques, check out this <\/strong>comprehensive study<\/strong><\/a>.<\/strong><\/p>\n\n\n\n

\ud83d\udce2 Hashtags for SEO & Visibility:<\/strong><\/p>\n\n\n\n

#OrthopedicSurgery #HandFracture #IMCSFixation #MetacarpalFracture #PhalanxFracture #HeadlessCompressionScrew #SurgicalTechniques #HandTrauma #BoneFixation #MedTech<\/p>\n\n\n\n

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