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Fig. 31.2 Toe transfer in U4R1 hand Post op
small nger positions to allow three-point pinch. Rarely, if the parents are willing to accept the appearance of the donor foot, combined second and third toes can be transferred into the middle—ring or ring— small nger positions. The range of motion of a toe transfer used for reconstruction of a nger depends on whether there is an exist­ing metacarpophalangeal (MCP) joint in the hand. If the proximal phalanx of a toe trans­fer can be xed to a remnant of the proximal phalanx of a nger, excellent motion can be expected at the existing metacarpophalan­geal joint, whereas if the metatarsal of the toe transfer has to be xed to a metacarpal in the hand, the motion achieved at the metatarsophalangeal and proximal inter­phalangeal joints is signicantly less.
2. Complete absence of all ve digits (R5). This is usually seen in the adactylic type IV symbrachydactyly [69] or transverse failure of formation. Reconstruction may be accom­plished using two second toe transfers into the thumb and ring or small nger positions to provide grasp and tip-to-tip pinch. This can be performed simultaneously but is probably bet­ter performed sequentially, so that positioning of the second transfer into a nger position can be adjusted to the position and mobility of the rst transfer into the thumb position (Fig.31.3).
N. Jones and C. Parolo
Fig. 31.3 Double Toe transfer in R5 hand Post op
31.8 Timing ofToe Transfers forCongenital Hand Dierences
The optimal age for performing a toe transfer to reconstruct a congenital hand difference has not been dened. Generally, the earlier that a toe transfer is performed, the better the chance of cortical integration. Children with a unilateral congenital hand difference should probably be reconstructed at an earlier age, before the use of the contralateral normal hand dominates. However, the real limiting factor in pediatric toe transfers is the size of the donor and recipient vessels, which must be of adequate size to facili­tate the microsurgical anastomoses. Gilbert [57,
58] and Lister [62] have performed toe transfers
in children as young as 6–12 months of age, but toe transfers have also been successful in older children between 11 and 17 years of age [71]. The author usually performs toe transfers between two and three years of age.
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31.9 Evaluation ofaChild foraToe-to-Hand Transfer
After a traumatic injury to a child’s hand, there is always some blame, either attached to or accepted by one of the parents. The parental response to a child born with a congenital hand difference resem­bles the bereavement response. Each parent must deal with their own sense of loss, as well as the obli­gation to direct the treatment of their child. Listening to the child’s parents and allowing them to express their understanding of their child’s condition and their hopes and expectations for reconstruction are vitally important. Some surgeons have recom­mended that the parents and child meet with a clini­cal psychologist prior to considering a toe-to-hand transfer, and it has been documented that psycho­logical counseling may play an integral role in deci­sion-making in pediatric hand surgery [72].
Rather than just showing pre- and postoperative photographs or videos or fabricating moulages, the author’s practice is to arrange for prospective parents to meet the parents of a child with a similar congenital hand difference who has previously undergone a toe transfer, so that the parents can see for themselves the potential function and appearance of the reconstructed hand and speak with the other parents about their concerns [60].
The parents should be prepared psychologi­cally for the signicant amount of time and energy that will be required during the pre- and postoperative period. In addition, they must understand and accept the fact that a toe transfer can fail, leaving the child with the same decit in the hand but also, now, missing a toe in the foot. If the parents and/or child cannot accept the time commitment and the potential risk of failure, toe­to- hand surgery should not be considered.
The child with a congenital hand difference will usually have been examined by a pediatrician for other congenital anomalies and possibly even by a geneticist to exclude a syndromic association. A detailed examination of the involved upper extremity should be performed, or if the child is very young, he/she should be observed while play­ing. More proximal shoulder or elbow abnormali­ties should be excluded such as Poland’s syndrome or radioulnar synostosis. The presence or absence of a radiocarpal joint as well as the number and
length of any metacarpal bones should be deter­mined. The presence or absence of a thumb and whether there is a thumb carpometacarpal joint is important if a toe-to- thumb transfer is being con­sidered. Dimpling of the skin in symbrachydactyly may indicate the presence of exor tendons in the vicinity of the nubbins.
One or other of the child’s feet may be posi­tioned close enough to the affected hand, so that the parents and/or child can visualize what the transferred toe might look like. Occasionally, congenital differences of the lower extremities may co-exist with upper extremity differences and especially with bilateral congenital hand dif­ferences; the availability of donor toes may be limited because of associated foot abnormalities.
Plain radiographs of both hands and both feet should be obtained to determine the presence of metacarpals and whether a carpometacarpal joint of the thumb is present or absent. In children where the carpal or metacarpal bones have not yet ossied, an MRI scan may occasionally be considered.
The necessity for preoperative angiography of either the upper or lower extremity remains con­troversial. Greenberg [73] found a preoperative lateral angiogram of the foot to be helpful in identifying the location and size of the rst dorsal metatarsal artery (FDMA) and rst plantar meta­tarsal artery (FPMA). The author no longer obtains angiograms but listens to the dorsalis pedis and rst dorsal metatarsal artery in both feet with a handheld Doppler probe. The dorsalis pedis artery can be traced distally into the rst dorsal metatarsal artery lying between the great toe and second toe metatarsals using an 8 mHz pencil Doppler ultrasound probe. The dominance of the FDMA can be assessed from the presence or absence of a Doppler signal, and the potential depth of the FDMA (supercial, within or deep to the interosseous muscles) can be assessed from the intensity of the signal.
31.10 Anatomy oftheGreat Toe
andSecond Toe
The arterial anatomy of both the great toe and the second toe is based on either the rst dorsal meta­tarsal artery (FDMA), a continuation of the dor-
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salis pedis artery, or the rst plantar metatarsal artery (FPMA) [74]. Supercial veins drain to the medial side of the dorsum of the foot and then into the greater saphenous vein. Sensibility to the plantar surface of the great toe or second toe is provided by the tibial (medial) and bular (lat­eral) digital nerves and to the dorsal surface by the deep peroneal nerve.
31.11 Surgical Technique
The child is positioned supine with the arm and hand on a hand table and the donor foot at the end of the operating table. General anesthesia is occa­sionally supplemented with an axillary block or continuous brachial plexus infusion. A Foley catheter is used to monitor urine output and uid status, but central venous catheters are not used routinely. A regular tourniquet is applied to the upper arm, and a sterile tourniquet is applied to the thigh, since a skin graft may need to be har­vested later from the thigh or groin.
Two surgical teams are utilized to dissect the hand and foot simultaneously, but dissection should usually start with the hand in congenital cases to conrm that recipient tendons and nerves are available. If only one team is available, the dissection usually commences with the hand to conrm that the specic tendons and digital nerves are available for subsequent tendon and nerve repairs.
31.11.1 Dissection oftheDonor
Foot
Preoperatively, the 8 mHz Doppler ultrasound probe is used to mark the location of the dorsalis pedis artery and/or the posterior tibial artery, depending on the local anatomy and the needs of the recipient hand. The location of suitable dorsal veins may be marked by inating the thigh tourni­quet to 100 mmHg after the draping but prior to the start of the surgery. The leg is then elevated but not exsanguinated in order to leave some blood within the venous system. A racquet- shaped inci­sion is used to harvest the great toe. A V-shaped incision is used to harvest the second toe. The mid-
point of the web space between the great toe and the second toe and the midpoint of the web space between the second and third toes are marked, and dorsal and plantar triangular aps are designed from these two points proximally to their apex at the level of the metatarsophalangeal joint. The dorsal incision is extended proximally in either a longitudinal fashion or a lazy S-shape to the level of the extensor retinaculum. Draining veins from the apex of the dorsal ap are dissected in a distal­to-proximal direction to a dominant dorsal vein, which is dissected further proximally to its origin from the greater saphenous vein at the level of the extensor retinaculum.
Either the extensor hallucis longus (EHL) tendon to the great toe or the extensor digitorum communis tendon (EDC) to the second toe is dissected in a distal-to-proximal direction and transected at the level of the extensor retinaculum.
The deep peroneal nerve is identied proxi­mally by dividing the extensor hallucis brevis tendon and traced in a proximal-to-distal direc­tion to the proximal margin of the V-shaped dor­sal ap. The fascicles supplying either the great toe or the second toe are divided from the main trunk of the deep peroneal nerve.
In the original technique of harvesting a toe transfer, the dorsalis pedis artery was identied proximally and dissected in a proximal-to-distal direction into the rst dorsal metatarsal artery (FDMA). However, it is faster to identify the FDMA distally in the web space between the great toe and second toe [75]. The FDMA may lie in a supercial dorsal, intramuscular, or plantar position in relation to the interosseous muscles. A communicating branch between the FDMA and the rst plantar metatarsal artery (FPMA) may be visualized passing over and distal to the intermetatarsal ligament. The liga­ment is divided and the FPMA may be dissected further proximally through the plantar incision. If the second toe is being transferred, the bular digital artery to the great toe is ligated and divided. If the great toe is being transferred, the tibial digital artery to the second toe is ligated and divided. The surgeon can then decide whether the dorsal or plantar arterial system is dominant. If the FDMA is considered to be large
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enough and in a supercial position, the FDMA is dissected in a distal-to- proximal direction to its origin from the dorsalis pedis artery, which is itself dissected further proximally to the level of the extensor retinaculum by dividing the exten­sor hallucis brevis tendon. If the FDMA is very small in caliber or lies deeply intramuscularly, the FPMA is chosen as the dominant arterial system but has to be extended with an interposi­tion vein graft, anastomosed on a back table [76]. If both the FDMA and FPMA are absent or hypoplastic, the great toe may still be trans­ferred using the medial plantar arterial system [77]. In children with congenital cleft feet, the great toe is usually transferred on the posterior tibial artery pedicle which can be traced distally to the medial plantar arterial system.
The exor hallucis longus tendon to the great toe or the exor digitorum longus and exor digi­torum brevis tendons to the second toe are identi­ed through the plantar incision and are divided as far proximally as possible. The exor tendons may be difcult to harvest without creating a long inci­sion on the plantar surface of the foot. In order to gain more length, the exor tendons may be divided through the dorsal incision after the meta­tarsal osteotomy.
The tibial and bular plantar digital nerves are traced proximally to their bifurcation from the common digital nerves. The common digital nerves to the great toe-second toe web space and the second-third toe web space are split more proximally using micro-forceps and microscis­sors before transecting the tibial and bular digi­tal nerves to either the great toe or second toe. Each nerve is tagged with a small micro clip to facilitate later identication.
Harvest of a second toe transfer is completed by osteotomy of the second toe metatarsal at the level of the metaphyseal are with a short, thin, narrow oscillating saw blade. The great toe is usually harvested at the level of the base of the proximal phalanx, as a more proximal osteotomy through the metatarsal head may interfere with gait. The tourniquet is then deated and the vas­cular pedicles irrigated with 1:20 papaverine solution to relieve any vasospasm, and the foot is wrapped in a laparotomy pad bathed with warm irrigating solution.
Prior to transfer to the hand, the toe transfer should be pink with normal capillary rell and should have an excellent Doppler signal. The toe transfer should be allowed to reperfuse for at least 20min before reinating the tourniquet on the leg. The arterial and venous pedicles to the toe are ligated with 4-0 silk ties and reinforced with small micro-clips. The toe transfer is wrapped in a moist laparotomy pad and handed to the surgical team operating on the hand.
31.11.2 Dissection oftheRecipient
Hand
This may be performed simultaneously with the foot dissection if two teams are available or pri­marily before the foot is dissected, especially in congenital cases to ensure that there are adequate nerves and tendons present in the hand. Even though the external morphological appearance and a plain radiograph of the hand are reliable indications for consideration of a toe-to-hand transfer, they do not imply availability of internal recipient structures. In general, the anatomic structures (tendons and nerves) are more devel­oped in children with congenital constriction ring syndrome compared to those children with sym­brachydactyly, hypoplasia, and transverse de­ciency. Several authors [5658, 60, 61, 78] have observed that tendons and nerves are more likely to be normal proximal to a constriction ring com­pared with symbrachydactyly. However, with increasing experience of the surgeon, the lack of suitable recipient tendons and nerves, which may be encountered in symbrachydactyly, can be cir­cumvented by using tendon grafts or tendon transfers and nerve grafts or nerve transfers.
The dorsal aspect of the hand is explored rst, either through a transverse incision at the level of the wrist or through a longitudinal incision extending proximally from the proposed meta­carpal stump. The extensor tendons in a congeni­tal hand are almost universally present, and a recipient extensor tendon is selected which has satisfactory gliding and excursion. A large dorsal vein is identied and tagged with vessel loops. A branch of the supercial radial nerve is also iden­tied for later coaptation to the deep peroneal
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nerve or as a nerve transfer to the plantar digital nerves of the toe transfer. For a toe-to-thumb transfer, the dorsal branch of the radial artery passing through the anatomical snuff box is dis­sected and tagged with vessel loops.
The palmar aspect of the hand is explored through a Bruner zigzag incision. Either the median or ulnar nerve is identied at the level of the wrist and dissected in a proximal-to-distal direction to identify common digital nerves or proper digital nerves for later coaptation to the plantar digital nerves of the toe transfer. The exor tendons are dissected either proximal or distal to the transverse carpal ligament, but a por­tion of the transverse carpal ligament should always be left intact to prevent bowstringing. One exor tendon should be selected which has satisfactory gliding and excursion. For a toe-to­nger transfer, the ulnar artery is dissected through Guyon’s canal and tagged with vessel loops. The periosteum over the stump of the selected metacarpal is elevated, and dorsal­palmar and radial-ulnar drill holes are made with a 0.035 inch K-wire for subsequent 90–90 inter­osseous wiring. The incisions in the hand are temporarily closed with staples to prevent exces­sive swelling and the tourniquet deated.
31.11.3 Transfer oftheToe
totheHand
Before reinating the arm tourniquet, the relevant structures in the toe transfer are reidentied—the dorsal vein, extensor tendon, deep peroneal nerve, exor tendons, and tibial and bular digi­tal nerves—and either the dorsalis pedis artery, FDMA or the FPMA system. The position and length of the toe transfer are then determined by placing the base of the metatarsal of a second toe or the proximal phalanx of a great toe at the pro­posed site of osteosynthesis with the selected metacarpal, checking the length and relationship of the toe transfer to the remaining digits in the hand or to the proposed location of a future addi­tional toe transfer. Excess length of the metatar­sal of a second toe transfer is removed with an oscillating saw. Dorsal-palmar and radial-ulnar drill holes are made in the metatarsal or proximal
phalanx of the toe transfer using a 0.035 inch K-wire, and osteosynthesis between the toe meta­tarsal or proximal phalanx and the recipient metacarpal or proximal phalanx is accomplished using 90–90 interosseous wiring with 26 gauge stainless steel dental wire. Alternatively, osteo­synthesis can be accomplished using crossed K-wires or a longitudinal K-wire or even a small plate and screws. Any propensity for hyperexten­sion at the metatarsophalangeal joint of the toe transfer is prevented by suturing the volar plate more proximally to soft tissues or to the metatar­sal itself to limit extension to a neutral 0°.
The extensor hallucis longus tendon of a great toe transfer or the extensor digitorum communis tendon of a second toe transfer is repaired to the selected extensor tendon in the hand. The toe transfer is positioned in full extension at the MCP (metacarpophalangeal) and interphalangeal joints and the selected recipient tendon at its resting tension. The extensor tendon repair is performed with multiple 4-0 clear nylon mattress sutures and a running locked suture to allow early motion. If a toe-to-thumb reconstruction is being per­formed, the extensor indicis proprius (EIP) ten­don to the index nger may need to be transferred as a donor tendon transfer. When reconstructing a nger, the “quadriga” effect, due to tethering of adjacent extensor tendons with a common mus­cle belly to the absent digits, must be prevented by releasing adjacent extensor tendons.
Usually only one exor tendon, the exor hallu­cis longus of a great toe transfer or the exor digito­rum longus tendon of a second toe transfer, is repaired to the selected recipient exor tendon in the hand or at the wrist level. The exor tendon repair is accomplished using several 4-0 nylon mat­tress sutures supplemented with a running locked suture. To prevent any “quadriga” effect, adjacent exor tendons that may tether the newly recon­structed exor tendon to the toe transfer are divided. Occasionally, an interposition exor tendon graft may be necessary to make up for any discrepancy in length between the exor tendon of the toe transfer and the selected exor tendon at the wrist. If a exor tendon with adequate excursion cannot be identi­ed, a primary tendon transfer may be required.
Neurorrhaphies of the tibial and bular digital nerves of the toe transfer to recipient common or
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proper digital nerves in the hand are performed using an end-to-end epineurial technique with 10-0 nylon microsutures under the operating microscope. Digital nerve neurorrhaphies can occasionally be facilitated using brin glue. Neurorrhaphy of a branch of the deep peroneal nerve of the toe transfer to a branch of the supercial radial nerve in the hand is similarly performed. If there is a gap between the digital nerves of the toe transfer and recipient nerves in the hand, interposition nerve grafts may be neces­sary, using either the supercial or deep peroneal nerves harvested as a nerve graft from the donor foot. If recipient digital nerves are unavailable in a toe-to-thumb transfer, end-to-side neurorrhaphies may be required, or a nerve transfer can be per­formed using a branch of the supercial radial nerve coapted to the ulnar digital nerve of the toe transfer.
Osteosynthesis, extensor and exor tendon repairs, and neurorrhaphies of the digital nerves and deep peroneal nerve should hopefully be per­formed within a 2 h period of tourniquet ination. The tourniquet is then deated for the arterial and venous anastomoses. The venous anastomosis is usually performed rst before the arterial anasto­mosis. The draining vein of the toe transfer is anas­tomosed end to end under the operating microscope using standard microsurgical techniques using 10-0 nylon microsutures to the selected vein on the dorsal aspect of the wrist. The recipient vein is then occluded just proximal to the anastomosis with a small microvascular clamp. The site of the arterial anastomosis depends on whether the dor­sal or plantar arterial system of the toe transfer has been harvested and the location of the recipient radial or ulnar artery. If a “long” dorsalis pedis— FDMA arterial pedicle—has been harvested, end­to-end or end-to- side anastomosis to the ulnar artery at the wrist or the dorsal branch of the radial artery in the anatomical snuff box can be per­formed. If the “short” FPMA pedicle has been har­vested, it can occasionally be anastomosed to the supercial palmar arch or to a common digital artery, but it is usually better to elongate the FPMA with an interposition vein graft anastomosed on a back table prior to osteosynthesis [76]. The vein graft can then be anastomosed end to end to the dorsal branch of the radial artery in the anatomical snuff box or the ulnar artery at the wrist. After
completion of the arterial anastomosis, the double approximator clamp is removed, but the single microvascular clamp on the proximal side of the venous anastomosis is maintained to create a high­pressure column of blood owing through the toe transfer to expand any collapsed vessels due to vasospasm. The anastomoses are irrigated with 1:20 papaverine solution. The toe transfer should rapidly turn pink and have excellent capillary rell. After removal of the microvascular clamp from the proximal side of the venous anastomosis, the patency of the arterial and venous anastomoses can be conrmed by the Acland “milking test.”
The incisions are loosely closed with inter­rupted 4-0 or 5-0 chromic sutures. Split thick­ness or full thickness skin grafts are liberally used to prevent any tension on the underlying anastomoses. A sterile pulse oximeter probe is applied to the nail plate of the toe transfer before the dressings are applied for continuous postoperative monitoring of the patency of the arterial and venous anastomoses [79]. The pulse rate of the toe transfer should correspond exactly to the pulse oximeter on the opposite hand and monitors the patency of the arterial anastomosis. Any decrease in the pulse rate compared to the systemic heart rate may indi­cate that the arterial anastomosis is compro­mised. The oxygen saturation (SaO2) monitors the patency of the venous anastomosis, and any decrease in the oxygen saturation for an extended period of time when compared to the systemic oxygen saturation may indicate thrombosis of the venous anastomosis. The incisions are covered with antibiotic ointment and nonadherent gauze dressings and the hand, wrist, forearm, and elbow immobilized in a loose plaster of Paris sugar-tong splint.
31.11.4 Closure oftheDonorFoot
The thigh tourniquet is deated and hemostasis achieved in the donor foot. If necessary, a small Jackson-Pratt drain is placed. After harvesting the second toe, the gap between the great toe and the third toe is closed by repairing the intermetatarsal ligament using 2-0 or 3-0 Ethibond sutures. The skin is loosely closed with interrupted 4-0 or 5-0
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chromic sutures. After harvesting the great toe, the dorsal and plantar skin can usually be approxi­mated or the remaining defect covered with a skin graft. After harvesting the Morrison “wraparound” or “trimmed toe” variations of a great toe transfer, the proximal-based ap on the medial aspect of the foot is used to cover any remnant of the proximal phalanx of the great toe, and any remaining soft tissue defect is covered with a skin graft. The donor foot is immobilized in a posterior plaster of Paris splint with the foot in neutral position.
31.12 Postoperative Care
Both the hand and foot are elevated and the hand kept warm with a heating blanket. The child is mon­itored in a pediatric intensive care unit for up to three days postoperatively. The child is kept sedated using opiates and benzodiazepines as necessary, and a rst-generation cephalosporin is administered intravenously for 5–7 days postoperatively. Anticoagulation with dextran 40 (0.36 ml/kg/h) is continued for ve days, and low-dose aspirin 81mg is started on the rst postoperative day and contin­ued for four weeks. The dextran infusion is reduced to half on postoperative day 6 and discontinued on day 7. If the clinical appearance of the toe transfer or the differential pulse oximetry monitoring indi­cates compromised perfusion to the toe transfer, the child should be returned to the operating room immediately for exploration and possible revision of the microsurgical anastomoses.
The splints on the hand and foot are removed 10–14 days postoperatively and the “take” of any skin graft is assessed. The child can then begin to ambulate with a bulky sock in a slipper or sneaker. The hand is protected with a removable thermo­plast splint for two more weeks when passive and active range of motion exercises of the toe trans­fer are begun.
These children may require secondary tenoly­ses, tendon transfers, bone grafting, arthrodeses, osteotomies, or scar revisions to reach their opti­mal functional and aesthetic outcome.
31.13 Conclusions
Microsurgical toe-to-hand transfers for posttrau­matic reconstruction in children and for reconstruc-
tion of congenital hand differences will hopefully continue to evolve to become accepted into the armamentarium of pediatric hand surgeons, although it will continue to remain a technical chal­lenge requiring a high level of microsurgical skill on the part of the hand surgeon and the ultimate trust of the child’s parents. Preoperative counseling of the parents with the opportunity to meet and speak with other families and children who have undergone a toe transfer is absolutely vital. Most importantly, the parents should fully understand the small potential for failure of the procedure with consequent loss of the toe transfer. While the indications for toe trans­fers are now better dened [60], the optimal age for toe transfers remains unknown. Just like other con­genital hand surgeries, most experienced surgeons believe that toe transfers between two and three years of age have the best chance of cortical integra­tion, although toe transfers have been successfully reported in older children between the ages of 11 and 17 years [71].
It will always be very difcult to prove con­clusively that microsurgical reconstruction of congenital hand differences is superior to either no surgical intervention or conventional recon­struction, but a child who is able to write his/her name for the rst time, or who can pick up a cup singlehandedly and hold an utensil or who can now ride a bicycle, provides the hand surgeon with far greater conrmation than the most sophisticated outcome instruments. In the future, parental assessment of their child’s functional outcome and even the child’s own assessment will be important validation of these techniques [80, 81].
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Compartment Syndromes (CS)
https://t.me/medicina_free
and Volkmann’s and Upper Limb Vascular Pathology in the Peri- and Neonatal Period
AntonioLandi, GiuesppeCaserta, AndreaGiorgini, SilvanaSartini, andScottOishi
32
Abstract
The borderline between perinatal compart­ment syndrome (CS), Volkmann’s contracture and vascular lesion appears to be very subtle.
As regards CS, a new pathophysiological classication has been introduced. Location, clinical symptoms and complementary inves­tigations vary signicantly from adults. The overlying area of skin necrosis, “the sentinel lesion”, usually accompanies the intrauterine and CS and Volkmann’s syndrome.
Treatment consists of early fasciotomy which has exceptionally carried out as the newborn already presents at birth with an established Volkmann’s contracture.
A. Landi (*) Hand Unit Casa di Cura Toniolo, Bologna, Italy e-mail: landi_antonio@virgilio.it
G. Caserta Hand Surgery Unit, Policlinico di Modena, Modena, Italy
A. Giorgini Orthopaedic and Traumathology Unit, Policlinico di Modena, Modena, Italy
S. Sartini Hand Rehabilitation Service, Policlinico di Modena, Modena, Italy e-mail: ssartini@gruppociemme.it
S. Oishi Department of Upper Extremity and Microsurgery, Scottish Rite Hospital for Children, Dallas, TX, USA e-mail: Scott.Oishi@tsrh.org
Ideal treatment consists of early escharotomy followed by skin grafting, early removal of the scar and neurolysis of the main nerves. Tendon or free muscle transfer will be subsequently per­formed according to the severity of the lesion.
Vascular lesions in the newborn are also very rare but must be distinguished from CS and Volkmann’s syndrome as treatment must be urgently addressed due to the fact that thrombosis of the main vessels might lead to necrosis followed by amputation of the upper limb. During the growing phase, residual problems such as joint stiffness, rst web con­tracture and bone non-union should be dealt with. Surprising in spite of signicant residual limb discrepancy, favourable long-term out­comes might be obtained.
Keywords
Perinatal compartment syndrome Volkmann’s classication · Fasciotomy Tendon transfer · Free muscle transfer · Limb discrepancy · Perinatal vascular lesion Sentinel lesion
32.1 Introduction
The pathology of CS and of Volkmann’s syn­drome, especially in relation to the associated skin lesion of the upper limb in the peri- and neo­natal period, was initially conned within the
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