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AN ANATOMICAL STATUETTE, Exhibiting the External Muscles of the Human Pigure at Full Length, carefully Modelled, and EXPRESSLY ADAPTED for the USE of ARTISTS, and others interested in the Study of Anatomy. Height, 27 inches. Accompanied by A Key_, containing Outline Yiews of the Statuette in its several Aspects, with References to the Names of the jNIuscles. Price 15s. ; or packed in Case for the Country, 4s. extra. Wilson and Ogilvy, 57, Skinner Street, London. OBSTETRIC PLATES, WITH EXPLANATIONS : SELECTED FROM THE ANATOMICAL TABLES OF WILLIAM SMELLIE, M.D. LONDON: SAMUEL HIGHLEY, 32, FLEET STREET. MDCCCXLVIII. PRINTED BY C. AND J. ADLARD, BARTHOLOMEW CLOSE. PLATE I Shows a side view of the pelvis, sinned column, and uterus, during the first stage of a natiu'al labour. The child is seen in its most usual attitude and position within the w^omb. It forms an ovoid, which corresponds to the shape of the uterus at the latter months of gestation. The head, which is the smaller end of the ovoid, is presenting with the occiput to the left side of the pelvis and the forehead, or larger fonta- nelle, to the right side. The chin is slightly inclined towards the chest; the arms touch the sides of the chest, and the fore-arms and hands cross over the chest. The legs are in a general state of flexion, and the feet cross each other. In the first stage of labom-, the lower part of the womb, or os uteri, has to be dilated, so as to allow a free communication between the cavity of the womb and the vagina. Tliis is effected mechanically by the womb contracting and forcing down a column of the licfior amnii towards the os uteri, which press out the membranes at this part, forming an even hemispherical water wedge, by which the circle of the os uteri is 4 equally enlarged. When the womb contracts, or, in other words, during a labour-pain, the head of the child is raised, as is seen in the plate ; the waters gathering below it, and after the pain, when the womb is relaxed, it again subsides on the os tiferi, and can there be felt through the thin membranes. PLATE I. A. The last dorsal vertebra. B. The OS pubis, on the left side, c.c. The OS uteri, D. The vagina. E. The left nympha. F. The left labium pudendi. G. The remaining portion of the bladder. H. The anus. I. I. The left hip and thigh. I'L .i i J-: I .5 PLATE II. The bones of the pelvis between the acetabula are here removed with the bladder, and the head of the child is seen in its second position, and in the second stage of laboui'. The occiput is directed towards the ri(/Jit, and not, as in Plate I, towards the left side of the pelvis, and the os uteri having been fully dilated, and the membranes ruptured, the head has sunk into the cavity of pelvis. As the head descends from the brim of the pelvis into the cavity, the vertex, or the presenting part, moves gradually forward towards the ramus of the iscliium, in doing which it adapts itself to the pelvis, so as to pass where there is the most room. The different planes of the brim cavity and outlet vary; and they are so arranged, as that the head of the child, in passing through them, is obliged to move forward in a screw-like manner, and is unerringly, in natural labour, dii'ected towards the outlet. 6 PLATE II. A. The uterus a little contracted, and thicker from the partial escape of the liquoi' amnii, B. • The anterior superior spinous processes of the ilia, c. The inferior part of the rectum. D. D» The vagina largely stretched. E. E. The OS uteri fully opened. F. A portion of \\\& placenta. G. G. The membranes. H. H. The lig amenta lata. i.T. The ligamenta rotunda; — they increase during gestation, and become placed close to the sides of the uterus. I'L.ii h: Enijrayai />y J. Steward Se/i'. /, /../,■„ /.JL'-/;,'/7 hj S.JIig7ary.62 .Fleet Sti€itSc3/. PLATE III. The head m the first position of a natural labour* has descended to the lowest part of thepelvis, and is about to make its escape. The presenting part, which, in this position, may very accurately be stated as the upper and back quarter of the right parietal bone, is just beginning, during a pain, to separate the lips of the external genital organs, and the occiput rests against the left descending ramus of the iscJdum. Sometimes, as Smellie supposed, the occiput comes more imme- diately under the arch of the pubis; but, as a rule, it becomes fixed against one or other pillar of the outlet, according to its original position being to the right or left side, and the head in its passage outward, passes around it. During the extension of the head from behind forwards, the chin separates from the chest, and the soft parts forming the floor of pelvis are put upon the stretch. The rectum is pressed upon and yields its contents ; the anus is stretched open, the perinmwi is distended to its utmost, and the external organs are fully expanded. * Vide Plato 1. 8 PLATE III. A. The titerus contracted closely to the fcetus, after the evacuation of the liquor amnii. B. c.D. The vertebrce of the loins, os sacrum, and coccyx. E. The anus. F. The left hip. G. The perincemi, H. The OS externum beginning to dilate. I. The OS jmbis of the left side. K. The remaining portion of the bladder. L. The posterior part of the os uteri. N.B. Although, for the most part, at or before this period the waters are evacuated, yet it often happens, that more or less will be retained, and not all dis- charged till after the delivery of the child, occasioned from the presenting part of the fvntus coming into close contact with the lower or under part of the uterus, vagina, or os eccternum, immediately or soon after the membranes break. rLATK III Enqraved by J^- Stewoft SenT. Lender, T^Mu'^hcr? by S.Hi^JrZey,3Z. Fleet Street. 28 SJ. 9 PLATE IV. This and the three folloAving plates iUustrate the manner in which the head of the child is released by means of the forceps, when it becomes necessary to deliver the mother, and attempt to save the child. The forceps may require to be applied when the head is still within the pelvic brim, or when it has descended into the cavity, or to the outlet of the pelvis — the only difference, so far as the instruments are concerned — being that the former require a longer pair of forceps. The position of the patient ought to be on the left side, with the trunk directed forwards, the nates overlapping the edge of the bed, and the legs and thighs Avell bent. The forceps in this plate are applied on the head when it is still detained at the upper part or inlet of the pelvis, and in this position they may be fixed in one of two ways — either, 1st. Over the ears embracing the sides of the head, one blade being in front behind the symphisis pubis, and the other behind, between the sacrum and child's head ; or the blades may be apphed respectively over the forehead and occiput, corresponding with the sides of the pelvis. The plate represents them in the fij-^st position, although it may be remarked, that as the 10 /jclvis is most usually coutracted in the coujugate diameter, there is but little available space for the application of the blades. Before ap})lying the forceps, the as uteri should be ([iiite dilated, the ear should be able to be felt, the bladder should be emptied, and the rectum ascertained to be free. Two lingers should be slipped along the child's head within the os uteris behind the pubes, and the front blade of the forceps, previously warmed and well greased, should be directed within the fingers to the side of the head, and there fixed over the ear ; the handle is then passed backwards in accordance with the brim of the pelvis, and is there to be held by an assistant. The other blade is to be introduced in the same w^ay with equal care, at the opposite part of the pelvis ; and if they have been properly and evenly directed, they will lock without difficulty, and the head be grasped laterally by them (as seen in this plate). When locking them, care must be taken that no portion of the soft parts, as the nymphse, or the hair be included. It is as well, when they are applied, to secure them by tying the handles together by a piece of tape, and then to grasp them previous to the attempt at extraction. When drawing down with the forceps, the power employed should be moderate and steady, and the head directed downwards and back- wards until it has passed through the brim. It will then be found that, from the mechanical relations be- tween the head and the pelvis, the former will screw 11 round of itself without any active direction on the part of the operator, until the occijmt appears at the outlet, and the head eventually disengaged. It is of importance to remember that, in extracting the head with the forceps, the efforts should not be continuous, but only at intervals, either concurrently with the return of labour -pains, or in imitation of them. 12 PLATE IV. A.A.B.C. Ine Lumbar verteorcB, os sac mm, and coccyx. D. The OS pubis of the left side. E. The remaining part of the bladder. F. The intestimmi rectum. G.G.G. The uterus. H. The 7nons Veneris. I. The clitoris, with the left nympha. X. The corpus cavernosum clitoridis. L. The anus. N. The perinceu7n. Q.P. The left hip and thigh. R. The skin and muscular part of the loins. K. The left labium pudendi. ri. A i t: I london.JPuili^ied by S.niffhJey.SZ.FuetSbneet.ldo' 13 PLATE V. The head of the fretus in this case may be taken to represent its withdrawal from the brim of the pelvis through the cavity, and towards the outlet — the forceps having been applied when it was fixed at the brim — or it may show the way in which the short forceps should be applied when the head is detained at the outlet. The change in the direction of the head in its pas- sage from the brim to the outlet, has been described and illustrated in Plate III, and in attempting to afford assistance by the forceps, it is necessary that the same precautions should be attended to as in the pre- vious case, Plate IV, and that the patient should be placed in the same position, with the nates drawn well over the side of the bed. The upper ear is to be the guide for the adjustment of the first blade of the for- ceps, which ought to be directed to this part by two fingers of the left hand introduced between the ear and the pelvis, and the blade in its passage should be kept close to the side of the head. When the blade is thus well placed, it should be held either by an assistant, or between the thumb and little finger of the left hand, the two fore-fingers being employed in directing the second blade to the opposite side of the 14 child's head. In bringing the locks together, care must be taken not to catch the hair or the skin of the external organs. The handles of the forceps may now be grasped with the right hand, and steady traction at intervals be made with them, the left hand being en- gaged in supporting the perinceum. In some cases a pair of forceps with a curve in the blades, as represented in outline in this plate, may be employed, but they are not so suitable as the straight forceps, when the head is low down in the pelvis. A. A. B.C. The lumbar vertebra, os sacrum^ and coccyx. D. The OS picbis of the left side. E. The remaining part of the bladder. F. The rectum. G.G.G. The uterus. H. The mons Veneris. I. The clitoris, with the left nymplia. X. The corpus cavernosum clitoridis. L.M. The anus. M.N. The perinceum. Q.P. The left hip and thigh. R. The skin and muscular part of the loins. K. The left labium pudendi. O. The common integuments of the abdomen. R. The short forceps. S. Smellie's long curved forceps. PLATE V. 15 PLATE VI, In the same view and section of the parts, shows the head of the fcetm in the same position, but brought lower down with the forceps than in the former plate ; for in this the os externum is more open, the occiput comes lower down from ]jelow the piibes, and the forehead past the coccyx, by which both the anus and jperincBum are stretched out in form of a large tumour. When the head is so far advanced, the operator ought to extract, with great caution, lest the parts should be torn. If the labour-pains are sufficient, the forehead may be kept down, and helped along in a slow manner by pressing against it with the fingers, on the external parts below the coccyx: at the same time, the forceps being taken off, the head may be allowed to stretch the os externum, more and more, in a gradual manner, from the force of the labour-pains, as well as assistance of the fingers. But if the former 16 are weak and insufficient, the assistance of the forceps must be continued. (Vide the description of the parts in Plate IV.) S, T, in this, represent the left side of the os uteri ; the dotted lines demonstrate the situation of the bones of the pelvis, on the right side ; and may serve as an example of all the lateral views of the same. a. b. c. h. The outlines of the c.v iliiiui. D. e. f. The outlines of the pubis and iscliimn. m. n. The foramen magnum. vi .n t: VI. 17 PLATE VII, In the same view and section of the pelvis, is intended by outhnes to show that, as the external parts are stretched, and the os externum is dilated, the occijput of the foetus rises up with a semicircular turn from out below the puhes, the under part of which bones are as an axis or fulcrum on which the back part of the neck turns, whilst, at the same time, the forehead and face, in their turn upwards, distend largely the parts between the coccyx and the os externum. This is the method observed by Nature in stretching these parts in labour ; and as Nature is always to be imitated, the same method ought to be followed when it is necessary to help along the head with the forceps. 18 PLATE Vn. A. A. B.C. The lumbar vertebra, os sacrum., and coccj/\r. D. The OS pubis of the left side. E. The remainmg part of the bladder. F. The intestinum rechm. G.G.G. The uterus, H, The mons Veneris, I. The clitoris, with the left nymph a. X. The corpus cavern osum clitoriOk. L.M. The anus, M.N. The perinmim . Q.p. The left hip and thigh. R. The skin and muscular part of the loins. K. The left labium pudendi, a.b.c.h. The outlines of the os ilium. D.e.f. The outlines of pubis and ischium. m.n. foramen maf/num. FL.irK vn. Erutraved hv J Stewart J^n''. L,nJ,n. rul'lM -by SMzgKLey.^ZMe^t Street. Id3] 19 PLATE VIII. The head is here seen having descended into the cavity of the pelvis, with the face and anterior fontanelle directed forwards, the latter being opposite to the left acetabulum^ the occiput being directed backward to- wards the right sacro-iliac synchondrosis. In this position, under the influence of labour-pains, the occi- jmt would move round to the right ischium, the face making a simultaneous movement backward, so that the head w^ould eventually be born in the same way as if it had originally been placed as delineated in Plate II. In this way the occiput makes a three- quarter turn, which is generally effected without ma- terial delay or difficulty. Sometimes this movement of internal rotation cannot be completed, and then the head of the child is born with the face forwards. If the child's head is small, and the pelvis capacious, and the soft parts relaxed, there will not be any trouble in this mode of delivery ; but sometimes the head becomes impacted, and then it is necessary to deliver by the forceps. 20 PLATE VIIL A.B. The vertehrce of the loins, os sacrum, and coccyaj. c. The OS pubis, on the left side. D. The anus. E. The OS externum, not 3^et begun to dilate. F. The nymplta. G. The labium pudendi, on the left side. H. The hip and thigh. M. The uterus contracted, the liquor amnii being all discharged. 1 Loridcn,D^hs}ied iy S.HighZcy.32.FUet Street. 183y. 21 PLATE IX. The head in this plate has descended into the cavity of the pelvis, in the same position as Plate VIII, but, owing to some obstruction in its course, the move- ment of rotation is impeded, and under the influence of labour-pains, the scalp has become swollen, forming an elastic tumour, which has been named the capii/ mccedaneum (k). Owing to the arrest of the head, the forceps have to be applied, and they are placed over the ears of the child, the same precautionary rules being observed as in other cases. An effort ought to be made by the operator to help the rotation of the head by giving a screw-like movement to it when extracting with the forceps, and he will often succeed in bringing the occiput forward — this move- ment being greatly aided by the mechanical relation which subsists between the head and the pelvis under this position. Sometimes, however, this will be found to be impracticable, and the head will be born with the face forwards, when the soft parts will be put more upon the stretch, and require a very careful support. 3 22 PLATE IX. 'J'lie elastic swelling from the compression of the scalp, and infiltration of the cellular memhrane with serous fluid, called the caput succedaneimi. The forceps applied over the sides of the child's head. The bladder distended mth urine from com- pression of the urethra. It shows the urgent necessity for emptying it before applying the forceps, or in any case of operative midwifery. The lower part of the uterus, which is removed from the abdominal walls by the interposi- tion of the distended bladder. The OS uteri fully dilated. FLATK TX. /,:• if,.'-hJ, y.32.yice.t Slrtet. KiSy 23 PLATE X. This plate illustrates that deviation from an ordinary presentation of the head, in which the chin becomes separated from the chest at the commencement of laboiu", and the occiput is turned back upon the neck, so that the face is converted into the presenting part. In the present figure this change is not quite com- pleted, the forehead or brow of the child being the most depending part; but the effect of the pains would probably soon bring the face down, and a true face presentation be formed. 24 PLATE X. A A. The superior parts of the ossa ilia. B. The anus. C. The perincemn. D. The OS externum. E.E.E. The vagina. F. The OS uteri not yet fully dilated. G.G.G. The uterus. H. The memhrana adiposa. PL A 'IE X G L vmirn. , IhihW^al ly S.mg'hlcy X? TIc&t SlTeit- 133/' PLATE XL Shows the position which the chiki's face assumes when it has passed through the cavity of the pelvis under a face presentation. The face having entered the brim of the pelvis with tb.e forehead directed towards one ilhcm, and the chin to the other ; the effect of the pains is to press that side of the face lowest which is in front behind thepubes, so that this side of the face becomes the presenting part, and the soft parts swell out from being compressed. As the face descends through the cavity, the chin moves towards the arch, beneath one pillar of which it becomes temporarily fixed. It is represented in the plate at this stage, and as the head is born, the face, forehead, and vertex successively pass out, tm^ning upwards over the pubes, and in their course putting the pemimtm severely on the stretch. Nature is almost always competent to the safe dehvery of the child under these circumstances, and there is no need for the practitioner to attempt to alter the position. Great caution is requisite not to hm-t the child's features by frequent examination, and the perincBum ought to be gently drawn forward when sup- ported, in order to prevent its giving way at its free margin, where laceration usually commences, and some- times extends so far back as to rupture the sphincter cmi, and lay the rectum completely open. 26 PLATE XI. A.B. The vertebrae of the loins^ os sacrum, and coccyx. c. The OS pubis y on the left side. D. The inferior part of the rectum. E . The perincBum . F. The left labium pudendi. G.G.G. The uterus. PL A TE XI. G G London.FuhLu^hM. 2ry 'J.m^Tilcv. C}2.J-le€t Street. 1S3 J. 27 PLATE XII. In this plate it has been necessary, for the dehvery of the child, luider face presentation, when the face is at the outlet, to have recourse to the short forceps, and the way in which they lie in relation to the face and head are well and faithfully represented. Before applying the forceps, the bladder and rectum should be emptied of theu^ contents, and the nates be drawn well over the edge of the bed. One blade of the forceps ought to be directed over one side of the face extending over the ear, and the other on the opposite side, and then locked together. There is not much difficulty in ad- justing the instrument under these circumstances, the head being securely grasped at its sides. With the purchase afforded by this adaptation, the face may gradually be brought forward beneath the arch of the pubes, and in its delivery be directed carefully for- wards and upwards, the soft parts being gently dilated and fully supported. n u t: Ml London Tuilisked by S.Hig}ile_y . SZ.FlMt Street, ld3J . I Smellie 18W