Minimizing impairment in laborers with finger losses distal to the proximal interphalangeal joint by second toe transfer

The Foot as a Donor Site for Reconstruction in the Hand

The foot contains a unique collection of tissue types that can be used in the reconstruction of the hand. Numerous reconstructive options have been presented, some of which have been adopted, such as modifications to procedures that have been described in the past or even newly developed options for hand reconstruction. It is possible to reconstruct missing fingers and other hand structures using tissues taken from the foot rather than removing healthy tissue from a hand that has already been injured. This makes it possible to avoid having healthy tissue removed from an injured hand.

An Update on the Management of Severe Crush Injury to the Forearm and Hand

The main goals of treating severe crush injuries are debriding away devitalized tissue and filling any resultant dead space with vascularized tissue. In the authors' experience, the most ideal methods for soft tissue coverage in treating crush injuries are the iliac flap, the adipofascial lateral arm flap, and the gracilis flap. Accompanying bone defects respond very well to free corticoperiosteal flaps. Digital defects often require the use of complete or subtotal toe transfer to avoid amputation and restore function to the hand.

Aesthetic functional reconstruction of the mutilated hand: Indications and selection of reconstructive techniques

Advances in microsurgery together with improvements in reconstructive surgical techniques over recent decades have enlarged the scope of available techniques for mutilated hand reconstruction, shifting the reconstructive paradigm from restoring hand function to providing the best functional and aesthetic results with minimal donor-site morbidity. Successful reconstruction of a mutilated hand should no longer be measured only by the degree of improvement of hand function but also by a more aesthetic hand appearance as well as by improved psychological well-being. In this article, the authors present their concept of aesthetic functional reconstruction of the mutilated hand with a focus on the indications and selection of reconstructive techniques. They emphasize that in order to select the most appropriate technique, providing the best functional and aesthetic outcomes with minimal donor-site morbidity for each individual patient, it is imperative for the reconstructive hand surgeon to possess perfect mastery of all available surgical techniques, thorough understanding of functional and aesthetic requirements and accurate appreciation of multidimensional reconstruction of a given defect of the hand. They have concluded that in precisely indicated cases, successful replantation of an amputated hand or digits remains the best reconstructive procedure designed to obtain a more functional and more normal-appearing hand, whereas, toe-to-hand transplantation, in cases of failed or impossible digit replantation, provides better results than any other digit reconstruction techniques aimed at achieving functioning digits with good appearance. Although skin graft and various distant pedicled flaps and free flaps may be valid options for coverage of some soft tissue defects of the hand, reverse flow forearm flaps, especially those based on the secondary arteries of the forearm, are often the best-suited reconstructive options for like-with-like hand reconstruction. They can provide the best matching of color, texture, soft-tissue volume, donor-recipient tissue interface and fulfill all the aesthetic and functional reconstruction requirements of moderate-sized or even large soft tissue defects of the hand, with acceptable donor site morbidity.

Extreme Thumb Losses: Reconstructive Strategies

BACKGROUND

Historically, complex amputations of the thumb have been managed in two stages and often require additional soft-tissue and tendon transfer for successful outcomes. This article provides several novel strategies to address these problems in a single stage using existing muscles, immediate free tissue transfer, and toe transfer.

METHODS

From a personal experience of 482 toe transfers, 24 cases were performed to reconstruct extreme thumb losses. All thumbs were reconstructed in one stage. In only one case, the thumb was reconstructed with a second toe transfer; the remainder had a great toe (or a part of it) used for reconstruction. Suture, advancement, or tendon transfers were performed in all to restore intrinsic muscle function. In 19 cases, the web needed to be resurfaced with free (n = 18) or local (n = 1) flaps.

RESULTS

All toes and flaps survived. Three patients required a secondary adductorplasty. Six of the seven patients with a metacarpal hand were able to perform tripod pinch. The rest had an average Kapandji opposition score of 7.5. Patients rated their functional and cosmetic result with a visual analogue scale score (ranging from 0 to 10) of 8.5 and 8.4, respectively.

CONCLUSIONS

In proximal thumb amputations, the surgeon should pay attention not only to the obvious thumb loss but also to the first web and the thenar muscles. The author recommends abandoning the standard approach of a pedicled groin flap followed by a toe. Otherwise, the thenar muscles become useless, the first metacarpal contracts, and the need for tendon transfers skyrockets. Further studies are required to compare the outcomes of these results to those of more classic transfers.

CLINICAL QUESTION/LEVEL OF EVIDECE

Therapeutic, IV.

Severe Crush Injury to the Forearm and Hand: The Role of Microsurgery

The main goals of treating severe crush injuries are debriding away devitalized tissue and filling any resultant dead space with vascularized tissue. In the authors' experience, the most ideal methods for soft tissue coverage in treating crush injuries are the iliac flap, the adipofascial lateral arm flap, and the gracilis flap. Accompanying bone defects respond very well to free corticoperiosteal flaps. Digital defects often require the use of complete or subtotal toe transfer to avoid amputation and restore function to the hand.

Full-Length Finger Reconstruction for Proximal Amputation With Expanded Wraparound Great Toe Flap and Vascularized Second Toe Joint

BACKGROUND

Most of the frequently used methods for finger reconstruction have their own limitations. Reconstruction of a full-length finger with normal appearance, in patients with proximal digital amputation, remains a challenge.

METHODS

Between January 2002 and November 2013, a total of 86 fingers (60 patients) with proximal phalanx amputation were surgically repaired. A compound flap comprising an expanded wraparound flap from the great toe and a vascularized proximal interphalangeal (PIP) joint from the second toe was harvested to reconstruct a full-length finger. The flap was used to reconstruct the nail, skin, and the distal phalanx; the PIP joint was used to reconstruct the PIP joint. To attain normal length of the finger and right PIP joint positioning, an iliac bone graft was inserted into the distal-middle or proximal phalanx.

RESULTS

All reconstructed fingers retained their viability and natural appearance and were of near-normal length with a normal PIP joint positioning; 12.8% (9/86) of the procedures required re-exploration owing to compromised circulation. Secondary procedures were required in 71% (61/86) of the cases. With the exception of 1 case, the donor-site complications were mild; the average range of motion at the other PIP joints was 52 degrees (-15 to -5 degrees of extension, 25-90 degrees of flexion). Approximately 80% of the normal functionality and 93% of the normal appearance with respect to aesthetics were restored.

CONCLUSIONS

The full-length finger reconstruction procedure allows for construction of natural-appearing full-length fingers with normal PIP joint positioning and a near-normal functional recovery for proximal digital amputation. The operation is technically complex and time consuming and demands a skilled operator for successful outcomes.

Onycho-osteo-cutaneous defects of the thumb reconstructed by partial hallux transfer

PURPOSE

To present our experience in distal thumb amputations reconstructed by partial toe to hand transfers with special emphasis on manual workers.

METHODS

Twenty-five patients who experienced amputation of the thumb distal to the interphalangeal joint, excluding pure soft tissue losses, were included in the study. All but 2 were manual workers. Twenty were reconstructed within 2 weeks after injury. The other 5 were referred late. In all patients, the ipsilateral hallux was used as donor, based on the proper digital artery (18 cases), the intermetatarsal artery (6 cases), and the dorsalis pedis artery (1 case).

RESULTS

All transferred flaps survived. At a minimum follow-up of 1 year (range, 1-14 y), active range of motion at the interphalangeal joint was more than 55° in 23 patients. Two had an interphalangeal joint arthrodesis, 1 of them before referral. Pinch and grip were similar to the contralateral side. Two-point discrimination was normal in the dorsal oblique amputations and 7 to 11 mm in the rest. Patient satisfaction was high from a functional and aesthetic standpoint (9.5 out of 10 on a visual analog scale for both outcomes). All patients returned to work 2 to 4.5 months after the operation. Delayed donor site healing was noticed in 4 cases.

CONCLUSIONS

In contrast to classic teaching that recommends stump closure for cases of distal thumb amputation, we attained excellent results with partial toe transfer in manual workers. In our experience, the thumb can be restored to nearly normal with an acceptable donor site sequela. The best indication is for cases of dorsal oblique amputations, because thumb sensibility is unaffected, and for amputations where the germinal matrix is preserved, because nail regrowth occurs. Early transfer is strongly recommended.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Vascularized bone grafts for upper limb reconstruction: defects at the distal radius, wrist, and hand

Vascularized bone grafts have been successfully applied for the reconstruction of bone defects at the forearm, distal radius, carpus, and hand. Vascularized bone grafts are most commonly used in revision cases in which other approaches have failed. Vascularized bone grafts can be obtained from a variety of donor sites, including the fibula, the iliac crest, the distal radius (corticocancellous segments and vascularized periosteum), the metacarpals and metatarsals, and the medial femoral condyle (corticoperiosteal flaps). Their vascularity is preserved as either pedicled autografts or free flaps to carry the optimum biological potential to enhance union. The grafts can also be transferred as composite tissue flaps to reconstruct compound tissue defects. Selection of the most appropriate donor flap site is multifactorial. Considerations include size matching between donor and defect, the structural characteristics of the graft, the mechanical demands of the defect, proximity to the donor area, the need for an anastomosis, the duration of the procedure, and the donor site morbidity. This article focuses on defects of the distal radius, the wrist, and the hand.

Ring avulsion injury with rupture of both digital arteries despite a completely intact skin envelope

A rare case of ring avulsion injury with avulsion of both digital arteries yet without external soft tissue, tendon or skeletal injury in a 29 year-old man is reported.

Microvascular free on-top plasty in multidigital amputations

Bidigital amputations proximal to the PIP joints severely impair function and cosmesis of the hand. The author presents a clinical series of five patients in which a three-fingered hand was reconstructed through microvascular transfer of one of the stumps on top of the other. Five male patients with amputation of two fingers proximal to the PIP joint were treated surgically. One of the stumps was transferred as a local free composite flap on top of the other stump. All five transfers were successful. The mean operative time was 2 h 15 min. The subjective improvement on hand function and cosmesis, as evaluated by the patients, was positive. Free microvascular on-top plasty is a straightforward and reliable procedure for improving cosmesis and function in hands with two fingers amputated proximal to the PIP joint, without additional donor morbidity outside the already injured hand.

Severe mutilating injuries to the hand: guidelines for organizing the chaos

Major hand injuries have become a rarity in Western countries. The fact that there are well trained teams devoted to their management, should not obscure the fact that the first emergency surgeon has the major role of setting the foundations for a reconstruction. Understanding the goal to be sought: the 'acceptable hand' (one with three fingers, with near normal length, near normal sensation and a functioning thumb), is hoped to be of great help in primary care. Preservation of vital structures such as joints, flexor tendons, and vessels, in the initial debridement, which will help to build this 'acceptable hand' are discussed. The general guidelines for management of finger amputation and soft tissue problems are also given.

Immediate partial great toe transfer for the reconstruction of composite defects of the distal thumb

BACKGROUND

Thumb defects distal to the interphalangeal joint do not cause any disability; therefore, any consideration to reconstruct the thumb is governed by the lifestyle and cultural background of the patient. This study presents the excellent results achieved by immediate partial great toe-to-hand transfer to reconstruct acute composite defects of the distal thumb.

METHODS

Fifty-three patients with amputation or crush injury of the distal thumb who underwent partial great toe-to-hand transfer at the authors' institute over an 11-year period were reviewed. Based on the amputation level of the distal thumb, the authors classified the injuries into three groups. Operative techniques used were osteo-onychocutaneous flap with partial or whole toenail from the great toe and partial great toe transfer with arthrodesis of the interphalangeal joint. Overall results were evaluated in terms of success rate, incidence of emergency reexploration, and number and type of secondary operation. Static two-point discrimination, range of motion, pinch strength, and subjective satisfaction were also evaluated.

RESULTS

The success rate of immediate partial great toe-to-hand transfer was 100 percent. The incidence of inflammation and the reexploration rate were not significantly different from those in previously reported articles. In 35 cases where postoperative follow-up was possible, static two-point discrimination, total active range of motion, and pinch strength were generally excellent and the majority of the patients were satisfied with the final outcome.

CONCLUSION

Immediate reconstruction with partial great toe transfer is an excellent option for reconstruction of composite defects of the distal thumb, not only for aesthetic reasons but also for functional purposes.

Toe-to-hand transplantation surgery

This article discusses toe-to-hand transplantation. The purpose of this article is to familiarize nurses with this procedure. In many cases, the actions taken initially and postoperatively may have a direct effect on the success or failure of the surgery. Two different procedures are discussed. The first procedure is replantation or revascularization of amputated digits in which time is of the essence and is usually performed right after the initial injury. The second procedure is the toe-to-hand transfer, which is an elective procedure in which there is less emphasis on time. This procedure occurs a few months after the initial accident.

Overcoming soft-tissue deficiency in toe-to-hand transfer using a dorsalis pedis fasciosubcutaneous toe free flap: Surgical technique

Reconstruction of combined finger and soft-tissue defects poses a technical surgical challenge. We present our experience with a hybrid flap: the dorsalis pedis fasciosubcutaneous-toe free flap. In a single stage, this flap solves the problem of medium-sized defects associated with digit losses in the hand. Donor-site morbidity has been minimal.

Analysis of prognostic factors in ring avulsion injuries

PURPOSE

To report 105 cases of ring avulsion injuries, examine the factors affecting rate of survival and functional outcome after reconstruction, and evaluate whether these data provide enough evidence to support attempts to repair these injuries.

METHODS

A retrospective cohort study was conducted in 105 patients with 105 ring avulsion injuries of all grades of severity treated at our center between 1977 and 2003. Factors that could affect the outcome included personal (gender, age, smoking history, vascular disease, diabetes mellitus, alcohol abuse), injury (finger affected, level of skeletal injury, presence of tendon and nerve injury, Urbaniak class as modified by Kay et al, presurgery time), and surgery features (number of arteries and veins reconstructed primarily and with vein grafts). Results were interpreted based on survival and final function. Function was measured by the presence of pain, range of motion, and 2-point discrimination.

RESULTS

Of the 86 digits with inadequate circulation, 11 digits had primary amputation. Reconstruction was attempted in 75 digits. Fourteen digits had secondary amputation because of revascularization failure. Failure was attributed to artery problems in 5 digits and to vein problems in 5 digits and was unknown in 4 digits. The overall survival rate was 81%.

CONCLUSIONS

Cigarette smoking is not associated with higher risk of revascularization failure. Reconstruction of 2 or more veins resulted in higher survival rates compared with reconstruction of only 1 vein. Level of bone injury is not an accurate indication of whether to attempt reconstruction. Primary nerve repair does not lead to a good sensory recovery in most digits. Patients who had their digits finally amputated had variable periods of hypersensitivity at the stump, which prolonged their convalescence time.