Master Hands and Paediatric Orthopaedics: Diagnose & Treat

Comprehensive Introduction and Patho-Epidemiology

Dupuytren’s disease is a complex, benign fibroproliferative disorder of the palmar fascia that results in progressive, permanent flexion contractures of the digits. Recognized as a hallmark pathology in both adult hand surgery and as a critical differential diagnosis in pediatric hand anomalies (such as camptodactyly or infantile digital fibromatosis), mastering its diagnosis and treatment is essential for the orthopedic surgeon. The condition primarily affects the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints, most frequently involving the ulnar digits (ring and little fingers). The clinical presentation often begins insidiously with a palpable palmar nodule, which over time coalesces into a dense, unyielding cord that physically tethers the digit into flexion, profoundly impairing hand biomechanics and patient quality of life.

The epidemiology of Dupuytren’s contracture is heavily skewed toward individuals of Northern European descent, earning it the historical moniker of the "Viking disease." It exhibits an autosomal dominant pattern of inheritance with variable penetrance. The concept of "Dupuytren’s diathesis" is critical for the clinician to understand, as it denotes a highly aggressive, recurrent form of the disease. Patients with the diathesis typically present at an earlier age, have a strong family history, exhibit bilateral involvement, and frequently present with ectopic fibroproliferative manifestations such as Ledderhose disease (plantar fibromatosis), Peyronie’s disease (penile fibromatosis), and Garrod’s pads (dorsal knuckle pads). Identifying these patients preoperatively is paramount, as their recurrence rates following surgical intervention are markedly elevated, often necessitating more radical surgical approaches such as dermofasciectomy.

A multitude of environmental and systemic risk factors have been conclusively linked to the onset and progression of the disease. These include chronic liver disease, excessive alcohol consumption, smoking (which induces microvascular ischemia), diabetes mellitus, and epilepsy (particularly associated with the long-term use of certain antiepileptic medications like phenytoin). Furthermore, occupational hazards involving repetitive manual labor or the use of vibratory tools have been implicated in exacerbating the micro-trauma cascade that triggers fascial proliferation. In the pediatric population, while true Dupuytren's is exceedingly rare, the surgeon must maintain a high index of suspicion for other fibromatoses or congenital contractures that mimic this presentation, ensuring that genetic and syndromic workups are initiated when appropriate.

At the cellular and histological level, the pathophysiology is driven by the transformation of native fibroblasts into myofibroblasts. According to Luck’s classification, the disease progresses through three distinct histological phases: the proliferative phase, the involutional phase, and the residual phase. During the proliferative phase, there is an intense, localized hypercellularity of myofibroblasts, which are characterized by the presence of alpha-smooth muscle actin and have contractile properties similar to smooth muscle cells. In the involutional phase, these cells align along the lines of tension, and there is a massive deposition of extracellular matrix. Notably, the normal Type I collagen of the palmar fascia is pathologically replaced by disorganized, dense Type III collagen. Finally, in the residual phase, the tissue becomes relatively acellular, leaving behind thick, mature collagenous cords that are devoid of myofibroblasts but rigidly maintain the digital contracture.

Detailed Surgical Anatomy and Biomechanics

A profound, three-dimensional understanding of the palmar fascial anatomy is the bedrock of safe and effective surgical intervention in the hand. The normal palmar fascia is a complex aponeurotic network that stabilizes the palmar skin, protects underlying neurovascular structures, and aids in grip. It is crucial to distinguish between normal anatomical "bands" and diseased pathological "cords." In Dupuytren’s disease, the normal bands hypertrophy and contract to become cords. The pretendinous band, which normally lies superficial to the flexor tendons, becomes the pretendinous cord, which is the primary structure responsible for isolated MCP joint flexion contractures.

The most surgically treacherous anatomical transformation occurs with the formation of the spiral cord, which is responsible for PIP joint contractures. The spiral cord is a composite structure formed by the pathological amalgamation of four distinct normal anatomical entities: the pretendinous band, the spiral band, the lateral digital sheet, and Grayson’s ligament. As this composite cord contracts, it spirals around the neurovascular bundle. Biomechanically, this proximal and central traction physically displaces the digital nerve and artery from their normal protected, lateral, and deep position, pulling them centrally, proximally, and superficially. This displacement places the neurovascular bundle in direct jeopardy during standard surgical incisions and dissection, making the spiral cord the most common site for iatrogenic digital nerve injury.

Other critical cords include the central cord, the lateral cord, and the natatory cord. The natatory cord arises from the natatory ligaments (superficial transverse metacarpal ligaments) and is responsible for web space contractures, preventing digital abduction. The retrovascular cord, though less commonly discussed, can contribute to distal interphalangeal (DIP) joint contractures and is particularly challenging to excise due to its intimate relationship with the dorsal aspect of the neurovascular bundle. It is equally important for the surgeon to recognize which structures are spared in Dupuytren’s disease. Cleland’s ligaments, which lie dorsal to the neurovascular bundle, are classically spared and do not undergo fibroproliferative changes, serving as a reliable anatomical landmark for locating the digital nerve during complex dissections.

In the context of pediatric orthopaedics, the biomechanics of hand contractures differ significantly. Conditions such as camptodactyly (congenital flexion contracture of the PIP joint, usually of the little finger) are typically driven by an imbalance in the lumbrical muscles, anomalous flexor digitorum superficialis (FDS) insertions, or volar plate contractures, rather than fascial fibroproliferation. Understanding the difference in these biomechanical tethers is vital; a fasciectomy performed on a pediatric camptodactyly will fail, just as a tendon transfer will not resolve a Dupuytren’s spiral cord. Mastery of the hand requires the surgeon to seamlessly integrate this anatomical knowledge to tailor the surgical approach to the precise pathological anatomy encountered.

Exhaustive Indications and Contraindications

The decision to intervene surgically in Dupuytren’s disease must be carefully weighed against the natural history of the condition and the functional demands of the patient. Observation is the standard of care for painless nodules or mild contractures that do not impair hand function. The classic clinical threshold for intervention is evaluated using Hueston’s tabletop test. If the patient is unable to place their palm completely flat on a hard surface, the test is positive, indicating an MCP joint contracture of at least 30 degrees, which generally warrants intervention.

Indications for treatment are generally defined as an MCP joint contracture of 30 degrees or greater, or any degree of PIP joint contracture that causes functional impairment. PIP joint contractures are notoriously more difficult to correct and are prone to rapid stiffening; therefore, they are often treated more aggressively and earlier than isolated MCP joint contractures. Rapidly progressive disease, severe web space contractures that limit grasp, and painful nodules (though pain is rare) are also indications for intervention. In pediatric patients presenting with similar contractures, indications rely heavily on progressive deformity that threatens skeletal growth or profound functional deficit, often necessitating early soft tissue release or tendon lengthening rather than fasciectomy.

Contraindications to surgical intervention include mild, non-progressive disease, lack of functional impairment, and patients with severe medical comorbidities that preclude safe anesthesia. Active local infection is an absolute contraindication to any elective hand surgery. Relative contraindications include poor soft tissue envelopes, severe peripheral vascular disease, and a history of complex regional pain syndrome (CRPS), which can be catastrophically exacerbated by hand surgery. Furthermore, patients who are unable or unwilling to comply with the rigorous postoperative splinting and hand therapy protocols should be cautioned against surgery, as postoperative stiffness and recurrence are virtually guaranteed without proper rehabilitation.

Treatment Modalities and Surgical Decision Making

Pre-Operative Planning, Templating, and Patient Positioning

Thorough preoperative planning is critical to achieving optimal outcomes and minimizing complications. The clinical examination must document the exact degree of active and passive extension deficit at the MCP, PIP, and DIP joints using a goniometer. The skin must be meticulously assessed for dimpling, pitting, and the presence of nodules, as severe skin involvement may necessitate a dermofasciectomy rather than a standard regional fasciectomy. A detailed neurovascular examination is mandatory; two-point discrimination should be recorded for every digit, and an Allen’s test must be performed to ensure adequate collateral arterial flow, particularly if digital artery injury is a risk or if the digit has been chronically contracted.

In the modern era of hand surgery, the choice of anesthesia and patient positioning has evolved significantly. While traditional methods utilize general anesthesia or regional blocks (axillary or supraclavicular) with a proximal pneumatic tourniquet, the Wide Awake Local Anesthesia No Tourniquet (WALANT) technique has revolutionized the approach to Dupuytren’s disease. Using a mixture of lidocaine, epinephrine, and sodium bicarbonate, the surgeon can achieve a bloodless field without a tourniquet. The paramount advantage of WALANT is the ability to assess active digital motion intraoperatively. Once the cord is resected, the awake patient can actively flex and extend the digit, allowing the surgeon to confirm complete release, assess for any residual tethering, and ensure flexor tendon integrity.

Patient positioning involves the patient lying supine with the operative extremity extended on a radiolucent hand table. If a tourniquet is used, the arm is exsanguinated with an Esmarch bandage, and the tourniquet is inflated to 250 mmHg. Loupe magnification (minimum 2.5x to 3.5x) is absolutely essential for this procedure due to the intimate and often distorted relationship between the fibrotic cords and the digital neurovascular bundles. The surgical site is prepped with standard chlorhexidine or iodine solutions, and the hand is draped to allow full visualization of the wrist and all digits.

Templating the incisions is a critical preoperative step. The surgeon must design incisions that allow wide exposure while preventing postoperative scar contractures. Bruner (zig-zag) incisions and longitudinal incisions with planned Z-plasties are the workhorses of Dupuytren’s surgery. The apices of the Bruner flaps must extend to the mid-axial lines and should never cross the flexion creases at a perpendicular angle. Careful marking of these incisions prior to the injection of local anesthetic or exsanguination ensures that the anatomical landmarks remain undistorted.

Step-by-Step Surgical Approach and Fixation Technique

The surgical execution of a regional fasciectomy demands meticulous technique and profound anatomical respect. Following the planned Bruner or longitudinal incisions, the skin flaps are elevated. This is a critical step; the skin is often intimately tethered to the underlying diseased fascia. The surgeon must elevate full-thickness flaps, leaving the subdermal vascular plexus intact to prevent flap necrosis. The dissection should begin proximally in the palm, where the anatomy is relatively normal and undistorted by the disease process.

Once the normal palmar fascia is identified proximally, the digital nerve and artery are located. The golden rule of Dupuytren’s surgery is to identify the neurovascular bundle in normal tissue and trace it distally into the diseased tissue. As the dissection proceeds distally toward the MCP and PIP joints, the surgeon must be acutely aware of the spiral cord. The neurovascular bundle will often be found diving superficial and central to the spiral cord. The surgeon must meticulously dissect the cord away from the nerve, often requiring the use of tenotomy scissors or a fine scalpel under loupe magnification. The nerve must be completely freed and protected before any segment of the cord is excised.

After the neurovascular bundles are secured bilaterally, the diseased fascial cords (pretendinous, spiral, lateral, and natatory) are systematically excised. The goal is a "regional" fasciectomy—removing the macroscopically diseased tissue while leaving uninvolved fascia intact, rather than a radical fasciectomy which carries unacceptably high morbidity. Following excision, the digit is passively extended. If residual PIP joint contracture persists despite complete fascial clearance, the surgeon must sequentially assess other structures. This may involve releasing the accessory collateral ligaments, performing a volar plate release (checkrein ligament excision), or even a flexor tendon lengthening, though these are less commonly required in pure Dupuytren's compared to pediatric contractures.

Closure of the wound is equally as important as the resection. If a longitudinal incision was used, Z-plasties are constructed to lengthen the volar skin and break up the linear scar. In cases of severe chronic contracture, the digit may lack sufficient skin coverage once fully extended. In these scenarios, the surgeon may opt for a Y-V advancement, allow a portion of the wound to heal by secondary intention (the open palm technique of McCash), or utilize a full-thickness skin graft (FTSG). If a dermofasciectomy is performed for recurrent disease, the overlying skin is excised en bloc with the fascia, and the defect is invariably covered with an FTSG, typically harvested from the medial arm, groin, or hypothenar eminence.

In salvage scenarios where the PIP joint is rigidly fixed and the articular cartilage is destroyed, or in elderly patients with recurrent recalcitrant disease, a PIP joint arthrodesis may be indicated. The joint is resected, and fixation is typically achieved using crossed Kirschner wires, a tension band construct, or a dedicated intramedullary compression device, fusing the joint in a functional position of 30 to 40 degrees of flexion. In extreme cases where the digit is neurovascularly compromised, insensate, and severely contracted, ray amputation remains a viable and highly effective salvage procedure to restore overall hand function.

Complications, Incidence Rates, and Salvage Management

Despite meticulous surgical technique, complication rates in the surgical management of Dupuytren’s disease remain notable, ranging from 15% to 20% in major series. The surgeon must be prepared to identify and manage these complications promptly to prevent catastrophic loss of hand function. Intraoperative complications primarily involve iatrogenic injury to the neurovascular structures. The digital nerve is injured in approximately 1-3% of primary fasciectomies, with the rate climbing to over 10% in revision surgeries.

If a digital nerve is transected intraoperatively, it must be repaired immediately under microscopic magnification using 8-0 or 9-0 epineural sutures. If the nerve gap is too large for a tension-free primary repair, an interposition nerve graft (e.g., from the medial antebrachial cutaneous nerve) or a nerve conduit must be utilized. Arterial injury, while less common, can result in digital ischemia if the contralateral digital artery is also compromised or absent. In such cases, microvascular repair or vein grafting is mandatory to salvage the digit.

Postoperative complications are broadly categorized into early and late. Early complications include hematoma formation, which is the most common cause of subsequent flap necrosis and deep infection. Meticulous hemostasis prior to closure, use of drains if necessary, and compressive dressings are critical preventative measures. A unique early complication is the "flare reaction," characterized by intense global hand swelling, erythema, and stiffness not caused by infection. This is essentially a localized sympathetic hyperactivity and is treated with aggressive hand therapy, elevation, and a short course of oral corticosteroids.

Late complications are dominated by disease recurrence, joint stiffness, and Complex Regional Pain Syndrome (CRPS). Recurrence is the Achilles heel of Dupuytren’s treatment. The definition of recurrence varies, but it is generally accepted as the reappearance of palpable cords with a progressive contracture >20 degrees in a previously treated ray. Recurrence rates approach 50% at 5 years for regional fasciectomy and are even higher for percutaneous needle fasciotomy. CRPS occurs in roughly 2-5% of patients and presents with out-of-proportion pain, trophic changes, and severe stiffness. Management requires a multidisciplinary approach involving pain specialists, intensive therapy, and occasionally sympathetic nerve blocks.

Comprehensive Complication and Salvage Matrix

Phased Post-Operative Rehabilitation Protocols

The surgical release of Dupuytren’s contracture is only the first half of the treatment paradigm; rigorous, phased postoperative rehabilitation is the critical second half. Without dedicated hand therapy, the initial surgical gains will rapidly be lost to scar contracture and joint stiffness. The rehabilitation protocol must be tailored to the exact procedure performed, the quality of the skin closure, and the patient's baseline functional status.

Phase 1: Immediate Post-Operative Period (0 to 2 Weeks)
Immediately following surgery, the hand is placed in a bulky, non-compressive dressing with a volar plaster slab. The wrist is positioned in neutral, the MCP joints in 70-90 degrees of flexion, and the PIP/DIP joints in full extension (the intrinsic-plus position). This position places the collateral ligaments on maximal stretch, preventing joint contractures. Elevation of the extremity above heart level is mandatory to minimize edema. At 3 to 5 days, the bulky dressing is removed by the hand therapist. A custom thermoplastic volar extension splint is fabricated. During the day, the patient performs gentle active and active-assisted range of motion (ROM) exercises, focusing on composite flexion and extension. The splint is worn continuously at night and during periods of rest.

![Image](/media/upload/hands-and-paediatric-orthopaedics

Clinical & Radiographic Imaging Archive