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200
HerniaSurgerySimplied
Fig. 20.9:  Muscles of the female perineum. (Modied from a 
drawing by Peter Thompson)
Fig. 20.10: Coronal section of anterior part of pelvis, through
the pubic arch. Seen from in front. (Diagrammatic)
a narrow muscular slip, which passes more or less transversely across the perineal space in front of the anus. It arises by tendinous bers from the inner and forepart of the tuberosity of the ischium, and, running medialward, is inserted into the central tendinous point of the perineum, joining in this situation with the muscle of the opposite side, with the sphincter ani externus behind, and with the bulbocavernosus in front. In some cases, the bers of the deeper layer of the sphincter ani externus decussate in front of the anus and are continued
intothismuscle.Occasionallyitgivesobers,which
join with the bulbocavernosus of the same side. Variations are numerous. It may be absent or double, or insert into bulbocavernosus or external sphincter. Actions: The simultaneous contraction of the two muscles serves to x the central tendinous point of the perineum. e bulbocavernosus (ejaculator urine; accelerator urine) is placed in the middle line of the perineum, in front of the anus. It consists of two symmetrical parts, united along the median line by a tendinous raphé. It arises from the central tendinous point of the perineum and from the median raphé in front. Its bers diverge like the barbs of a quill-pen; the most posterior form a thin layer, which is lost on the inferior fascia of the urogenital diaphragm; the middle bers encircle the bulb and adjacent parts, of the corpus cavernosum urethrae, and join with the bers of the opposite side, on
the upper part of the corpus cavernosum urethrae, in a strong aponeurosis; the anterior bers, spread out over the side of the corpus cavernosum penis, to be inserted partly into that body, anterior to the ischiocavernosus, occasionally extending to the pubis, and partly ending in a tendinous expansion which covers the dorsal vessels of the penis. e latter bers are best seen by dividing the muscle longitudinally, and reecting it from the surface of the corpus cavernosum urethrae. Actions: is muscle serves to empty the canal of the urethra, after the bladder has expelled its contents; during the greater part of the act of micturition its bers are relaxed, and it only comes into action at the end of
theprocess.emiddlebersaresupposedbyKrause
to assist in the erection of the corpus cavernosum urethrae, by compressing the erectile tissue of the bulb. e anterior bers, according to Tyrrel, also contribute to the erection of the penis by compressing the deep dorsal vein of the penis as they are inserted into, and continuous with, the fascia of the penis. e ischiocavernosus (erector penis) covers the crus penis. It is an elongated muscle, broader in the middle than at either end, and situated on the lateral boundary of the perineum. It arises by tendinous and eshy bers from the inner surface of the tuberosity of the ischium, behind the crus penis; and from the rami of the pubis and ischium on either side of the crus. From these points eshy bers succeed, and end in an aponeurosis which
PelvicHernias
201
is inserted into the sides and under surface of the crus penis. Action: e ischiocavernosus compresses the crus penis, and retards the return of the blood through the veins, and thus serves to maintain the organ erect. Between the muscles just examined a triangular space exists, bounded medially by the bulbocavernosus, laterally by the ischiocavernosus, and behind by the transversus perinei supercialis; the oor is formed by the inferior fascia of the urogenital diaphragm. Running from behind forward in the space are the posterior scrotal vessels and nerves, and the perineal branch of the posterior femoral cutaneous nerve; the transverse perineal artery courses along its posterior boundary on the transversus perinei supercialis. e deep fascia: e deep fascia of the urogenital region forms an investment for the transversus perinei profundus and the sphincter urethrae membranaceae, but within it lie also the deep vessels and nerves of this part, the whole forming a transverse septum which is known as the urogenital diaphragm. From its shape it is usually termed the triangular ligament, and is stretched almost horizontally across the pubic arch, so as to close in the front part of the outlet of the pelvis. It consists of two dense membranous laminae, which are united along their posterior borders, but are separated in front by intervening structures. e supercial of these two layers, the inferior fascia of the urogenital diaphragm, is triangular in shape, and about 4 cm in depth. Its apex is directed forward, and is separated from the arcuate pubic ligament by an oval opening for the transmission of the deep dorsal vein of the penis. Its lateral margins are attached on either side to the inferior rami of the pubis and ischium, above the crus penis. Its base is directed toward the rectum, and connected to the central tendinous point of the perineum. It is continuous with the deep layer of the supercial fascia behind the transversus perinei supercialis, and with the inferior layer of the diaphragmatic part of the pelvic fascia. It is perforated, about 2.5 cm below the symphysis pubis, by the urethra, the aperture for which is circular and about 6 mm in diameter by the arteries to the bulb and the ducts of the bulbourethral glands close to the urethral orice; by the deep arteries of the penis, one on either side close to the pubic arch and about halfway along the attached margin of the fascia; by the dorsal arteries and nerves of the penis near the apex of the fascia. Its base is also perforated by the perineal vessels and nerves, while between its apex
and the arcuate pubic ligament the deep dorsal vein of the penis passes upward into the pelvis. If the inferior fascia of the urogenital diaphragm be detached on either side, the following structures will be seen between it and the superior fascia: the deep dorsal vein of the penis; the membranous portion of the urethra; the transversus perinei profundus and sphincter urethrae membranaceae muscles; the bulbourethral glands and their ducts; the pudendal vessels and dorsal nerves of the penis; the arteries and nerves of the urethral bulb, and a plexus of veins. e superior fascia of the urogenital diaphragm is continuous with the obturator fascia and stretches across the pubic arch. If the obturator fascia be traced medially after leaving the obturator internus muscle, it will be found attached by some of its deeper or anterior bers to the inner margin of the pubic arch, while its supercial or posterior bers pass over this attachment to become continuous with the superior fascia of the urogenital diaphragm. Behind, this layer of the fascia is continuous with the inferior fascia and with the fascia of Colles; in front, it is continuous with the fascial sheath of the prostate, and is fused with the inferior fascia to form the transverse ligament of the pelvis. e transversus perinei profundus arises from the inferior rami of the ischium and runs to the median line, where it interlaces in a tendinous raphé with its fellow of the opposite side. It lies in the same plane as the sphincter urethrae membranaceae; formerly the two muscles were described together as the constrictor urethrae. The sphincter urethrae membranaceae surrounds the whole length of the membranous portion of the urethra, and is enclosed in the fasciae of the urogenital diaphragm. Its external bers arise from the junction of the inferior rami of the pubis and ischium to the extent of 1.25 to 2 cm and from the neighboring fasciae. ey arch across the front of the urethra and bulbourethral glands, pass around the urethra, and behind it unite with the muscle of the opposite side, by means of a tendinous raphé. Its innermost bers form a continuous circular investment for the membranous urethra. Nerve supply: e perineal branch of the pudendal nerve supplies this group of muscles. Actions: e muscles of both sides act together as a sphincter, compressing the membranous portion of the urethra. During the transmission of uids, they like the bulbocavernosus, are relaxed, and only come into action at the end of the process to eject the last drops of the uid.
202
HerniaSurgerySimplied
The Muscles of the Urogenital Region in the Female (See Fig. 20.9)
 • Transversusperineisupercialis.  • Ischiocavernosus.  • Bulbocavernosus.  • Transversusperineiprofundus.  • Sphincterurethraemembranaceae.
The transversus perinei superficialis (transversus perinei; supercial transverse perineal muscle) in the female is a narrow muscular slip, which arises by a small tendon from the inner and forepart of the tuberosity of the ischium, and is inserted into the central tendinous point of the perineum, joining in this situation with the muscle of the opposite side, the sphincter ani externus behind, and the bulbocavernosus in front. Action: The simultaneous contraction of the two muscles serves to x the central tendinous point of the perineum. e bulbocavernosus (sphincter vagina) surrounds the orice of the vagina. It covers the lateral parts of the vestibular bulbs, and is attached posteriorly to the central tendinous point of the perineum, where it blends with the sphincter ani externus. Its bers pass forward on either side of the vagina to be inserted into the corpora cavernosa clitoridis, a fasciculus crossing over the body of the organ so as to compress the deep dorsal vein. Actions: e bulbocavernosus diminishes the orice of the vagina. The anterior fibers contribute to the erection of the clitoris, as they are inserted into and are continuous with the fascia of the clitoris, compressing the deep dorsal vein during the contraction of the muscle. e ischiocavernosus (erector clitoridis) is smaller than the corresponding muscle in the male. It covers the unattached surface of the crus clitoridis. It is an elongated muscle, broader at the middle than at either end, and situated on the side of the lateral boundary of the perineum. It arises by tendinous and eshy bers from the inner surface of the tuberosity of the ischium, behind the crus clitoridis; from the surface of the crus; and from the adjacent portion of the ramus of the ischium. From these points eshy bers succeed, and end in an aponeurosis, which is inserted into the sides and under surface of the crus clitoridis. Actions: e ischiocavernosus compresses, the crus clitoridis and retards the return of blood through the veins, and thus serves to maintain the organ erect. e fascia of the urogenital diaphragm in the female is not so strong as in the male. It is attached to the public arch, its apex being connected with the arcuate pubic
Fig. 20.11: Perineal hernias
ligament. It is divided in the middle line by the aperture of the vagina, with the external coat of which it becomes blended, and in front of this is perforated by the urethra. Its posterior border is continuous, as in the male, with the deep layer of the supercial fascia around the transversus perinei supercialis. Like the corresponding fascia in the male, it consists of two layers, between which are to be found the following structures: the deep dorsal vein of the clitoris, a portion of the urethra and the constrictor urethra muscle, the larger vestibular glands and their ducts; the internal pudendal vessels and the dorsal nerves of the clitoris; the arteries and nerves of the bulbi vestibuli, and a plexus of veins. e transversus perinei profundus arises from the inferior rami of the ischium and runs across to the side of the vagina. e sphincter urethrae membranaceae (constrictor urethrae), like the corresponding muscle on the male, consists of external and internal bers. e external bers arise on either side from the margin of the inferior ramus of the pubis. ey are directed across the pubic arch in front of the urethra, and pass around it to blend with the muscular bers of the opposite side, between the urethra and vagina. e innermost bers encircle the lower end of the urethra. Nerve supply: e muscles of this group are supplied by the perineal branch of the pudendal.
 Spontaneousdevelopmentofperinealherniasisavery
rare condition and many techniques have been described for repairing the pelvic oor defect.
Occurrence: Posteriorprimaryperineal herniasare very unusual ndings and they may be congenital or acquired. ey occur most commonly between the ages of 40 and 60 years and are ve times more common in females than in males, due to the broader female pelvis and attenuation of the pelvic oor during pregnancy.
Clinically
Signsand symptomsareconned tocomplaintsof a
mass in the perineum or buttock, which may cause some discomfort when sitting. e classic signs of hernia, such as perineal bulging, size that varies when abdominal pressure is applied, tympanites and peristalsis, allow diagnosis to be made. However, perineal hernias may be mistaken for other diseases of the perineum and adjacent organs, such as lipomas, bromas, rectocele, cystocele and prolapse of the rectum. One particular condition from which perineal hernias must be distinguished is sciatic hernia. However, when a perineal hernia is reduced, the direction of reduction together with the palpable defect in the pelvic oor identies the hernia as perineal rather than sciatic. Investigations: Radiographic demonstration of such hernias via plain lm or barium had already been reported before the advent of CT/MRI scanning (Figs
20.12 and 20.13). ey can show that the herniation of
PelvicHernias
Fig. 20.13: MRI perineal hernias
the sigmoid colon is adjacent to the distal rectum and going into the buttock. In the normal pelvis, CT scans are adequate to display the muscle anatomy of the pelvic oor, thereby allowing the identication of any muscle perineal defect.
Treatment
203
Fig. 20.12: Barium enema shows a perineal hernia with loop
of sigmoid colon in sac
Simpleclosureofthepelvicdefectbybringingtogether
the levator ani muscles along the midline is occasionally feasible, the pelvic oor is usually decient and requires support using autogenous or prosthetic materials. e perineal approach is usually dicult in the repair of perineal hernias, unless these are accompanied by an abdominal access. A new laparoscopic approach for repairing postope­rative perineal hernias, involving the use of synthetic mesh, has recently been reported and regarded as safe
andeective.  Surgicalrepaircanbedoneeitherthroughatransabdo-
minal approach or transperineally.
index
Page numbers followed by f refer to gure and t refer to table
A
Abdomen 7f Abdominal inguinal ring 159f surgery 81 wall defects 42 Abnormal protrusion of viscus 1 Acellular porcine collagen 49f Advantages of local anesthesia 83 AlloDerm 49 mesh 49, 50f tissue matrix 49f Anatomical layers of abdominal wall 6 Anatomy of abdomen 5 female inguinal canal 120t femoral canal 134f groin 5 Anesthesia for hernia repairs 83 inguinal incision in hernia repair 86f Annulus inguinalis subcutaneous 153 Anterior abdominal wall anatomy 6 in cadaveric dissection 8f Anterolateral muscles of abdomen 151 Aponeurotic and fascial senescence 40 Arcuate line 16, 17f Areawise occurrence of umbilical hernia
34f Arteries in femoral canal 137f Atrophy of left gluteal muscles 197f
B
Balloon dissection 109 dissector and trocars 107 for making properitoneal space 109f Bard 3D max mesh 61f Visilex mesh 62, 62f Barium swallow for hiatus hernia 79 Bassini repair 88, 89f sutured cure 3f Bilateral inguinal hernias 107 Bilocular interstitial hernia 72f properitoneal hernia 72f
Blood supply 19 of inguinal canal 19t, 20f of posterior abdominal wall 22, 24f Bochdalek hernia 73 Bogros’ space 13, 15f
C
Cadaveric dissection 10f Calcitonin gene-related peptide 124 Camper’s fascia 7 Causes of delayed wound healing 82 femoral hernia 45, 135 loss of musculofascial tissue 48 umbilical hernia 43, 44 Central tendon 29 Choice of mesh 169 Classication of abdominal hernia 64 groin hernias 64 hernia 64 inguinal hernia for total extraperitoneal
repair 65 ventral hernia 65 Cloquet’s lipoma theory 37 Closure of external oblique aponeurosis 100f peritoneum 168 Collagen containing mesh 48 diseases 40 Complete ligature of sac 1f Completely descended testis 39f Complications of epigastric hernia operation 162 ventral hernia repair 175 Congenital abdominal wall defects 44, 73 diaphragmatic hernia 74f Conjoint tendon 24, 26f Connective tissue disease 42 Contents of hernia 190 Cooper’s hernia 66 iliopectineal ligament 4 ligament 92f, 104, 115 Coronal section of abdomen posterior
abdominal wall 22f Corrugator cutis ani 198 Coverings of femoral hernia 135
Creating peritoneal ap 115 Cremaster 156f Crura of supercial inguinal ring 22 tendon 29 Crural arch 135f Current guidelines in hernia surgery 81
D
Deep circumex iliac arteries 19 epigastric arcade 18 fascia 6, 8, 198 inguinal ring 23 layer of transversalis fascia 13 lymphatic vessels 21 Denervation theory 38 Deployment of prolene hernia system 100f Desarda’s theory 38 Descent of testis in embryonic life 38f Development of preperitoneal space 99f Device for inguinal hernioplasty 54 on abdominal wall 61f Diagnosis of hernia 68 Diaphragmatic hernia 66, 72 Diastasis recti 48, 71 Direct inguinal hernia 76 Disadvantages of local anesthesia 84 Dissecting hernia sac 115 Dissection of femoral space 92f Division of external oblique aponeurosis
99f
E
Endoscopy for hiatus hernia 79 Enlarged prostate 40 Entering intra-abdominal cavity 114 Epidemiology of inguinal hernia survey
results 35 Epigastric hernia 34, 34f, 66, 70, 150 surgery 161 Esophageal hiatus 30 Etiological factors of incisional hernia 164 European pelvis 40f Examination of adult groin hernia 68f External abdominal ring 153 anatomy of abdominal wall 6 oblique 11f
206
Hernia Surgery Simplied
aponeurosis 95f muscle 10f, 181f sphincter ani 198 Extraperitoneal fascia 6 operation 142
F
Fascia 4 of Camper 152 of Colles 152 of Scarpa 152 transversalis 11 Father of modern hernia surgery 2f Female inguinal hernia 120, 121, 121f Femoral canal 25, 133 repair 139 hernia 33, 45, 45f, 67, 76, 76f, 133, 133f,
138, 134 ring 133 sheath 133 vessels 14f Fibrae intercrurales 153 Final position of prolene hernia system
mesh 100f Floor of canal 55 Foley catheter 107 Fortaperm mesh 50f Fossa ischiorectalis 198 Fruchaud’s theory 37
G
General cavity of abdomen 26 Gilbert classication 65f Grynfeltt’s hernia 66 Grynfeltt-Lesshaft hernia 71
H
Hannington-Ki sign 194 Hematoma 111 Hemostasis 81 Hernia 1, 4 of superior lumbar triangle 177 repair 82, 83 technique 59 surgery 83 Hernial sac ligation 112f Herniography 29, 74 technique 74 surgery 2f Hesselbach’s original drawing 5 triangle 6, 25, 42 Hiatal hernia 34, 66, 70, 79f Hiatus hernia 54f Howship-Romberg sign 78, 190, 194
I
Iliohypogastric nerves 20 Ilioinguinal nerves 20 Iliopubic tract 104 Incarcerated hernia 69 Incarceration technique 173f Incisional hernia 66, 70, 79, 163, 166 repair 165 Indications of umbilical hernia surgery 147 Indirect inguinal hernia 76, 76f Inferior epigastric artery and vein complex 103 vessels 115 Inguinal and lacunar ligaments 154f canal 121 dissection 90 hernia 25f, 39, 40, 42, 68, 75, 138 in adults 32 in children 32, 33f, 123, 125 in males 33f surgery in girls 129 ligament 23, 25f Inlay mesh repair 169, 170 Intercolumnar bers 153 Internal oblique muscle 10f Interparietal hernia 71 Intersection tendineae 151f Interstitial hernia 72 Intra-abdominal injury 111 Intraperitoneal onlay mesh 103, 106, 188 Irreducible hernia 69, 126
K
Keith’s theory 38
L
Langer’s lines 17, 18f in hernia surgery 16 Laparoscopic classication of hernia 65 hernia repair 88 incisional hernia repair 169 inguinal anatomy 104 hernia repairs 102 repair for femoral hernia 143 retroperitoneal repair 184 surgery for spigelian hernia 188 ventral hernia repair 171 Large pores 51 Lateral abdominal wall dissection 110 muscles 9f hernias 165, 165f muscles 9
ventral hernia 69 Layers and anatomy of pediatric inguinal
canal 128f Le Suspenseur De L’abdomen 24 Left lumbar hernia 180f Ligament 4 Ligamentum inguinale 151f Linea alba 16, 151f semilunaris 16 Lines of incision for Bassini’s repair of
inguinal hernia 89f List of causes of inguinal hernia 40 Littre’s hernia 66 Local anesthesia for hernias 83 to inguinal area 85f Locations of port placement 108f Lockwood’s infrainguinal approach 139 Loss of fascial strength 48 Lotheissen’s transinguinal approach 142 Lumbar hernia 66, 177, 180 Lymph nodes 138 Lymphatic drainage 20 Lytle and Marcy repair 88
M
Major muscles of posterior abdominal wall 21 nerves of posterior abdominal wall 21t Management of femoral hernias 138 of hernia strangulation 131 of incarcerated hernia 130 of umbilical hernia 131 Manual reduction of incarcerated hernia
130 Marcy repair 88 Mayo’s procedure for umbilical hernia 147 McEvedy’s high approach 142 Mechanism of hernia of groin 39 Medial inguinal fossa 29f side of mesh 95f Mesh and folding of mesh 117f deployment and xation 110 strap 61f Metal prosthetic graft material 47t Milestones in hernia surgery 1 Modied Bassini 89, 90f Monolocular interstitial hernia 73f properitoneal hernia 71, 72 Morgagni hernia 73 Multilayered repair 2f Multiple hernia defects 166f
Index
207
Muscle and fasciae of abdomen 151 of anal region 198 of female perineum 200f of male perineum 199f of urogenital region in female 202 male 199 rectus abdominis 151f transversus abdominis 151f Muscular bers 29t Musculofascial layer 9 Musculo-tendino-aponeurotic dystrophy
40
N
Negro pelvis 39f Nerve injury 111 Nonmetal synthetic prosthesis 47t
O
Obesity 40 Obliquus externus abdominis 152, 155f Obturator hernia 66, 71, 78 Onlay mesh repair 169 Open anterior repair of inguinal hernia in
adult 88 prosthetic incisional hernia repair 167 Openings in diaphragm 30, 30f, 31t Operating room setup 108t Operation theater layout 113 Original Bassini operation 90f Oxidized regenerated cellulose 57
P
Pantaloon hernia 66 Paraumbilical hernia 66, 70 Parietex mesh 53f, 54f Peacock’s theory 38 Pediatric inguinal hernia 123, 123f Pelvic hernias 190 musculature 191f, 192f Penrose drain 99f Perineal hernia 66, 71, 198, 202f Peritoneography 74 Peritoneum 25, 28f Petit’s hernia 66, 71 Phases of wound healing 81 Placement of prosthetic mesh 82 Pneumoperitoneum in TAPP 114f Polypropylene hernia system 54f, 97f, 98f prosthetic mesh 52 Polytetrauoroethylene 60
Ponka’s system 64 Port positions 114f Posterior abdominal wall 21, 178f Poupart’s ligament 26f Pregnancy 40 Preparation of mesh 169 Presentation of hernia 68 Preshaped mesh device for inguinal hernia
60 Prevalence of hernia 32 Principles of hernia repair 81 Prolene 3D patch 56 hernia system 100, 149f mesh 51f, 52 polypropylene hernia system 54 Properitoneal hernia 66 Prosthesis used in hernioplasty 46 Prosthetic for inguinal hernia repair 48 mesh 82 with absorbable barriers 60 without barrier 60 Pure tissue repair 2f Pyramidalis 16, 16f
R
Ratio of inguinal hernia 32f in children 33f Rectus abdominis 8, 15f, 157 muscle 6f sheath 8 Recurrent inguinal hernia 65f, 106 Reducible hernia 69 Reliable treatment for paraesophageal and
hiatal hernia 54 Repair of pediatric inguinal hernia 128 technique 94 with prolene hernia system 149 Retzius’ space 13 Richter’s hernia 66 Right inguinal hernia 75f Russell’s theory 37
S
Sac closure and excision 139 of incisional hernia 168f Scarpa fascia 7 Sciatic hernia 67, 71, 196 nerve 197f Scrotal hernia 77 with bowel loops 77f Separation of hernial sac 112
Seroma formation 111 Shouldice repair 90 Silk glove sign 127f sign 68 Single hernia defect 166f Skin incision 99f sutured with staplers 171f Sliding hernia 66 Small pores 51f Space dissection 109f Spermatic cord 24, 115 Spigelian hernia 67, 69, 76, 77f, 185, 185f,
188f Spina iliaca antero-superior 151f Sports hernia 67 Stages of hernia formation 193 pelvic hernia formation 193f Standard technique of transabdominal
preperitoneal hernia repair 113 Strangulated hernia 69 Subcostal nerves 20 Subcutaneous inguinal ring 153f tissue 6 Subserous and peritoneal fascia 8 Supercial circumex iliac arteries 19 epigastric arteries 19 fascia 6, 7, 152, 198 fatty layer 7 hernia 72 inguinal ring 22, 24, 25 lymphatic vessels 20 Superior epigastric arteries 19 pubic ligament 6, 6f triangle of Grynfeltt and Lesshaft 177 Supravesical hernia 80f Surgical anatomy of hernia sites 5 Synthetic absorbable suture 58
T
Technique of hernia repair 88, 122f open anterior inguinal hernia repair 88 eories for hernia formation 37 oracoabdominal nerves 19 Toxicity of local anesthetic agents 86 Transabdominal preperitoneal hernia repair 112, 113f repair 102, 103, 188 Transversalis fascia 12, 14f, 159 muscle 155
208
Hernia Surgery Simplied
Transversus abdominis 11, 157f muscle 10, 10f, 13 Trendelenburg position 90f Triangle of doom 104f pain 104f Trocar placement 109 in preperitoneal space 109f positioning 114f Types of abdominal hernia 66 lumbar hernia surgery 177 repair 167
U
Uglavasky theory 38 Ultrapro hernia system 55f Umbilical hernia 34, 43, 56, 70, 144, 145f hernia repair 146f Upper gastrointestinal endoscopy depicting
hiatus hernia 70f
Use of prosthesis in hernia repair 46, 48
V
Vagina muscle recti abdominis 151f Valsalva maneuver 75 Vas deferens and spermatic veins 112f
Vascular supply of abdomen 17 Veins of femoral canal 136f Velpeau hernia 67 Ventral abdominal wall hernia 79f hernia 54f, 163f surgery 163
W
Walk’s theory 38 Wide female pelvis 38 Wound complications 175 healing 82