In this criminal case, the defendant was convicted of rape of a child with force, assault and battery, and aggravated rape, with the only evidence supporting aggravation being that the rape was committed as part of a joint venture. His codefendant, who is not a party to this appeal, was convicted only of *572assault and battery, and not of rape.1 The defendant contends that his conviction of aggravated rape cannot stand in light of his co-defendant’s acquittal on the rape charges, and that his trial counsel was ineffective.
I.
We summarize the evidence in the light most favorable to the Commonwealth. At the time of the rape, the victim was fifteen years old, and lived during the summer with her mother in a campground in Rochester. One evening in July, 2003, after an argument with her mother, she wandered the campground. She met her friend, who was about fourteen years old, and later that night, they ran into the defendant and codefendant, both of whom she knew. The four walked together, and between 11:00 p.m. and midnight, the friend departed, leaving the victim with the defendant and the codefendant.
The three arrived in the area of a deserted campsite. The victim stopped and bent down to tie her shoe. When she stood up, the defendant and the codefendant were behind her, one on each side. They each grabbed one of her arms and pulled her toward the vacant tent. The victim tried “wiggling away from them.” The codefendant unzipped the tent, and the defendant pushed the victim inside.
The victim, who was the sole witness for the Commonwealth, testified that, at that point, she “thought they were joking around.” The defendant laid on the tent floor a box spring and mattress that had been pushed up against a side of the tent. The codefendant closed the front of the tent.
The defendant pushed the victim onto the mattress, and pulled off both her T-shirt and tank top. She told him to stop. The co-defendant held up her arms so that she could not push the defendant away. The defendant removed her pants and undergarments, leaving her naked on the bed.
The codefendant kept holding the victim. She told the defend*573ant and the codefendant to stop. Although she struggled, the defendant raped her vaginally while the codefendant held the victim’s left leg.
According to the victim’s testimony, the defendant continued for “a couple of hours,” but after twenty or thirty minutes, the codefendant left the tent, saying “he was getting out of there because he didn’t need this on him.” The victim was crying and speaking loudly. She testified that she wanted it over. The defendant then forced the victim to engage in oral sex for approximately twenty minutes.
After the defendant left, the victim gathered her clothing and dressed. She returned to her campsite. At that point, it was approximately 3:00 a.m. The victim did not tell her mother what had happened because her mother was angry at her for keeping late hours. In the morning, her mother confronted her about having been out so late. The mother told the victim that she would be sent to New Hampshire to live with her father because she was getting in trouble at the campsite. Her mother left, and when she returned she was upset because she had heard something had happened between the victim and the defendant. The mother asked the victim what had happened. The victim told her mother about the rape, her mother called the police, and the victim was ultimately taken to the hospital.
The defendants, who were represented separately, called one witness, another resident of the campground, who testified that the victim was, in fact, with a group of girls during the time the assault was alleged to have occurred. In their closing arguments, the defendants argued that the victim fabricated the claim of rape to avoid being sent away from the campground by her mother.
n.
The defendant argues that, because the codefendant was acquitted of all the rape charges against him, and convicted only of simple assault and battery, the defendant’s conviction of aggravated rape based on a theory of joint venture as the aggravating factor was impermissible. Joint venture liability means that two people have acted together. Proof of a joint venture requires the Commonwealth to show “that the defendant was present at the scene of the crime, that he had knowledge that another intended to commit the crime and shared the intent to commit the crime, *574and that, by agreement, he was willing and available to help the other if necessary.” Commonwealth v. Netto, 438 Mass. 686, 701 (2003).
Had the codefendant, convicted only of assault and battery, been found a joint venturer with the defendant, the jury could have convicted the codefendant of rape on the joint venture theory. The jury acquitted him instead. The codefendant was present at the scene of the crime, and the defendant’s argument proceeds on the premise that the codefendant’s acquittal of rape necessarily means that the jury found that he either did not share the intent to commit the crime with the defendant, or that he was not willing and able by agreement to help him. This would mean that the jury found no joint venture.2 And in the absence of a joint venture, the defendant argues, he could not be convicted of aggravated rape in this case, where the only aggravating factor of which evidence was presented and on which the jury was charged was that the crime was committed as part of a joint venture.3
There is some logic to the defendant’s argument. Our general *575rule is that “mere inconsistency in verdicts, one of which is an acquittal, will not render the verdict of guilty erroneous even though such inconsistency may have indicated the possibility of compromise on the part of the jury.” Commonwealth v. Scott, 355 Mass. 471, 475 (1969). We have said that this “rule recognizes the power, possibly salutary, of juries to compromise and to act out of leniency.” Commonwealth v. Diaz, 19 Mass. App. Ct. 29, 33 (1984). The defendant, however, points to an arguably contrary, long-standing rule in the context of conspiracy that “if at a single trial for conspiracy all but one of the defendants are acquitted of the charge, a conviction of the remaining defendant must be set aside.” Commonwealth v. Cerveny, 387 Mass. 280, 285 (1982). The defendant argues in essence that just as “one cannot commit a conspiracy alone,” ibid., one cannot commit a joint venture alone, and that, consequently, in the face of his co-defendant’s acquittal on the rape charges, his conviction of aggravated rape cannot stand.
When presented with a similar argument in Commonwealth v. Wojcik, 43 Mass. App. Ct. 595, 602 (1997), we indicated in dictum that it might be correct. We distinguished that case from the conspiracy cases, and affirmed the convictions, saying, “We are not faced here with a circumstance in which a defendant was convicted of a crime based on joint enterprise and other defendants were acquitted of similar charges in the same trial.” Ibid. We also used similar language in affirming a conviction in Commonwealth v. Coleman, 30 Mass. App. Ct. 229, 235 (1991), saying, “We do not have here a defendant convicted of a crime based on joint enterprise and all other defendants acquitted of similar charges in the same trial,” though we noted in a footnote that “[t]he conclusion that this verdict configuration in the same trial requires reversal of all guilty verdicts is not a necessary *576one.” Id. at 235 n.6, citing United States v. Bucuvalas, 909 F.2d 593 (1st Cir. 1990), and Commonwealth v. Nighelli, 13 Mass. App. Ct. 590, 595 (1982). Finally, an early case suggests that the rule we apply in conspiracy cases applies more broadly to contexts like that involved here. See Commonwealth v. Slate, 11 Gray 60, 63 (1858) (suggesting that the rule for conspiracy cases applies to any offense that “involve[s] from its character, as in the case of a charge of a conspiracy or a riot, the united act of two or more individuals to constitute an offence in either”).
The defendant’s argument, though, ultimately is foreclosed by our more recent decision in Commonwealth v. Clements, 51 Mass. App. Ct. 508 (2001), S.C., 436 Mass. 190 (2002).4 In Clements, the defendant was convicted of murder in the second degree as a joint venturer. Id. at 509. His codefendant was acquitted of all charges. Ibid. Yet his codefendant was the only person who could have been his principal. See id. at 522-523. See also id. at 536 (Duffly, J., dissenting) (“[T]he Commonwealth must have presented evidence sufficient to establish, beyond a reasonable doubt, that [the codefendant] was the principal in the shooting”). Indeed, a review of the transcript in the Clements case reveals that the jury were instructed they could convict the defendant on a joint venture theory only if he was acting as a joint venturer with his codefendant.
In Clements, “[w]e . . . rejected] the defendant’s claim that the verdict of acquittal of [the codefendant] and the verdict of guilty as to the defendant on the theory of joint venture are inconsistent verdicts which require reversal of the defendant’s conviction of second degree murder.” Id. at 523.5 We stated that “mere inconsistency of verdicts does not render a guilty verdict *577erroneous.” Ibid., quoting from Commonwealth v. Robinson, 48 Mass. App. Ct. 329, 341 (1999).
Clements is controlling here. The defendant therefore is not entitled to a new trial on this issue.
HI.
The defendant also claims ineffective assistance of trial counsel. The standard is well-known: to prevail on an ineffective assistance claim, the defendant must show that “there has been serious incompetency, inefficiency, or inattention of counsel. . . falling measurably below that which might be expected from an ordinary fallible lawyer,” and that the failure “deprived the defendant of an otherwise available, substantial ground of defence.” Commonwealth v. Saferian, 366 Mass. 89, 96 (1974). If the defendant argues that counsel’s strategy or tactics were faulty, he must show that the challenged tactical judgments were “manifestly unreasonable.” Commonwealth v. Gonzalez, 443 Mass. 799, 809 (2005), quoting from Commonwealth v. Parker, 420 Mass. 242, 248 n.7 (1995).
In this case, the defendant has not initially brought this claim as part of a motion for a new trial under Mass.R.Crim.P. 30(b), as appearing in 435 Mass. 1501 (2001), but raises it for the first time on direct appeal. As the Supreme Judicial Court has explained, this approach is “strongly disfavor[ed].” Commonwealth v. Zinser, 446 Mass. 807, 809 n.2 (2006). Consequently, when presented with an ineffective assistance claim in this procedural posture, we will reverse only if the factual basis for the claim “appears indisputably on the trial record.” Id. at 811, quoting from Commonwealth v. Adamides, 37 Mass. App. Ct. 339, 344 (1994).
A.
The defendant’s attorney introduced the victim’s unredacted medical records in order to impeach the victim during cross-examination; while the records had not been subpoenaed as required by G. L. c. 233, §§ 79 and 79G, the trial judge, at defense counsel’s request, and over the Commonwealth’s objection, allowed them in evidence. The medical records contained incon*578sistencies with the victim’s trial testimony, including the fact that at the hospital she had not alleged that she was orally penetrated, which she did allege at trial, and that at the hospital she had alleged digital penetration, although at trial she did not. The records also included a record signed by a physician that indicated that her “clinical impression” was “sexual assault.” They contained notations of the victim’s statements that she was “raped” or “sexually assaulted,” and they contained a recounting of her report of the incident that named the defendant repeatedly throughout. The records also indicated that the victim suffered no bruising, swelling, or bleeding, recording only tenderness in the bilateral area of her thighs.6
The defendant argues first that trial counsel was ineffective both in submitting in evidence the victim’s medical records and in failing to redact them. The records were introduced at the defendant’s request and over the objection of the Commonwealth that the admission did not comply with G. L. c. 233, §§ 79 and 79G. Their introduction was central to the defense strategy. In this case, the defense chose to admit that the victim had contemporaneously claimed she had been sexually assaulted, had been sent to the hospital, and had repeated her claims there. The defense theory was that the victim’s claim of rape was made up in order to have an explanation for the late night out that resulted in the victim’s mother’s decision to send the victim to live with her father.
This defense strategy did not work, but it does not “appear[] indisputably on the trial record” that its employment with its attendant introduction of the medical records was manifestly unreasonable. The alternative might have been a credibility contest with the defendant offering no explanation at all for why the victim might have been, as he argued, falsely claiming to have been raped, and without the evidence of inconsistency that the defendant relied upon in an attempt to portray the allegations against him as false.
*579Turning to the redaction the defendant now argues that his trial counsel should have sought, and assuming without deciding that the defendant would have been entitled to it, his complaint about counsel’s failure to object is disposed of by what we have just said. The defendant urges that the victim’s detailed account of the sexual assault should have been redacted; that its references to the defendant by name should have been redacted; and that three other references in the report to the victim reporting that she had been sexually assaulted should have been redacted.
This argument ignores the strategic choice made by trial counsel. In closing, trial counsel argued that the victim’s statements at the hospital were inconsistent with her testimony at trial precisely because the story she was telling was not true. This argument would have been unavailable without the jury knowing that she had, indeed, reported that she was raped by the defendant, and having before them the details of her contemporaneous account. The defendant does not explain why, in light of defense counsel’s trial strategy, it would have made any sense to seek the redactions he now suggests.7
Without a developed record including, for example, an affidavit from trial counsel explaining why he sought to introduce the records without redaction, we cannot determine the precise rationale behind trial counsel’s decisions. But in light of trial counsel’s trial strategy, which, as we have said, was not sufficiently obviously unreasonable to amount to ineffective assistance, we can say that it does not “appear[] indisputably on the trial record” that trial counsel’s choices fell below what might be expected, or that they “deprived the defendant of an otherwise available, substantial ground of defence.”
*580B.
Finally, the defendant argues that the victim impermissibly provided self-corroborating testimony. See Commonwealth v. Montanez, 439 Mass. 441, 448 (2003) (impermissible self-corroboration to testify about the action a guidance counselor took as a result of a conversation with the victim), overruled in part by Commonwealth v. Stuckich, 450 Mass. 449, 457 n.11 (2008). Specifically, the defendant argues that the victim’s testimony of action taken by her mother and the police was self-corroborative, conveying, first, that the victim was sufficiently credible that her mother was moved to call the police; second, that she was sufficiently credible that the police requested her to go to the hospital for a medical examination; and third, that she was sufficiently credible that the police arrested the defendant. We examine each piece of testimony in turn.
First, the victim did not in her direct testimony testify that it was her mother, rather than she, who called the police. Rather, as the Commonwealth points out, this testimony was elicited by defense counsel on cross-examination. Its purpose was to show, consistent with the defense strategy, that the victim herself had not called the police, but that her mother had done so. This was more consistent with the defense theory of a false accusation originally made by the victim to persuade her mother not to send her away.
Even assuming the testimony about the victim’s mother calling the police was self-corroborative — a question we need not address — at most the defendant’s argument amounts to a further challenge to trial counsel’s strategy, and as we have explained above, at least in this procedural posture, the claim of ineffective assistance for the choice of strategy is without merit.
Second, we do not think the testimony in this case about the police asking the victim to go to the hospital can be characterized as self-corroborative. The evidence indicated that the hospital trip was for investigatory purposes and that the decision to send the victim to the hospital did not depend on the credibility of the victim. The victim testified in part as follows:
Q.: “Now, when you spoke to the police, did you go into great detail about what happened?”
*581A.: “They didn’t say I had to. They never asked. They asked me to give a brief description of what happened.”
Q.: “They didn’t go into any detail at all?”
A.: “Nope. Because they said I would have to do it at the hospital.”
This testimony indicates that the hospital trip was procedurally required wholly independent of, and indeed prior to, anything the victim said to the police.8 Since the evidence was admissible, there was no error in failing to object to it.
This leaves the defendant’s argument that counsel should have objected to testimony by the victim that, as the defendant puts it, “conveyed to the jury that she was sufficiently credible such that the police arrested the defendant.” Contrary to the defendant’s claim, however, the victim provided no such testimony. In response to the question to which the defendant points (“And did you see if [the defendant] was placed under arrest at that time?”), the victim responded that the last she saw before going inside was the defendant standing near a police cruiser and talking with a police officer.9
Judgments affirmed.
Both the defendant and the codefendant were charged with aggravated rape, G. L. c. 265, § 22(a); rape of a child with force, G. L. c. 265, § 22A; indecent assault and battery, G. L. c. 265, § 13H; and assault and battery, G. L. c. 265, § 13A. The judge granted both defendants’ motions for a directed verdict of not guilty on the indecent assault and battery charges.
After the jury returned their verdicts, the defendant filed a motion for a directed finding of not guilty with regard to the aggravated rape charge, arguing that since the codefendant was found not guilty of rape, joint venture liability was impossible. The judge denied the motion, writing, “[T]he jury could have found that a joint enterprise took place but that [the codefendant] abandoned that joint enterprise.” The defendant argues, correctly, that the judge’s conclusion that the jury could have found that the codefendant withdrew from the joint venture, and acquitted the codefendant of rape on that basis, was unsupported by the evidence. A finding of withdrawal or abandonment requires “at least an appreciable interval between the alleged termination and [the commission of the crime], a detachment from the enterprise before the [crime] has become so probable that it cannot reasonably be stayed, and such notice or definite act of detachment that other principals in the attempted crime have opportunity also to abandon it.” Commonwealth v. Elliot, 430 Mass. 498, 501 n.3 (1999), quoting from Commonwealth v. Cook, 419 Mass. 192, 202 (1994). The evidence presented did not support a finding of abandonment since the only testimony offered was that the codefendant did, in fact, participate in the rape well past the point where abandonment was possible.
Contrary to the suggestion in the dissent, see post at note 3, this case involves only a claim of a factually inconsistent verdict, not a claim of a legally inconsistent verdict. A fatually inconsistent verdict, unlike a legally inconsistent verdict, does not automatically require reversal. “Factually inconsistent verdicts occur when two or more verdicts in a single case, considered together, suggest inconsistent interpretations of the evidence presented at trial.” Commonwealth v. Gonzalez, 452 Mass. 142, 151 n.8 (2008). In this case, the defendant’s conviction of aggravated rape required the jury to interpret the evidence to prove the existence of a joint venture beyond a *575reasonable doubt; the codefendant’s acquittal of the rape charge suggests an inconsistent interpretation of that same evidence. A legally inconsistent verdict occurs where a defendant is convicted of two crimes the elements of which are “mutually exclusive,” Commonwealth v. Chandler, 29 Mass. App. Ct. 571, 580 (1990), such that “removed from the factual context of the particular case, the government could not possibly have proved the elements of both crimes with respect to the defendant.” Commonwealth v. Elliffe, 47 Mass. App. Ct. 580, 584 (1999). The classic example is that “it is inconsistent in law for a defendant to be convicted both of stealing property and of receiving the same property.” Commonwealth v. Nascimento, 421 Mass. 677, 683 (1996).
The Supreme Judicial Court granted review in Clements, limiting its “consideration to the issue whether inconsistent, recanted extrajudicial statements of identification that were the sole evidence of guilt are sufficient to convict.” See Commonwealth v. Clements, 436 Mass. 190, 191 (2002). It ultimately affirmed the defendant’s convictions. The Supreme Judicial Court’s action left undisturbed the holding of this court with respect to the inconsistency of the verdicts, a holding necessary for the affirmance of the defendant’s conviction of murder in the second degree. While this does not indicate Supreme Judicial Court approval or endorsement of our holding in Clements, we are of course bound by our prior decision in that case. See Commonwealth v. Lindsey, 72 Mass. App. Ct. 485, 495 (2008).
As this language makes clear, and contrary to the assertion by the dissent, *577see post at note 2, the inconsistency of the verdicts was thus squarely addressed in Clements.
The Commonwealth points out that the medical report notes a serosanguineous discharge from the victim’s cervix, and defines serosanguineous to mean “bloody.” This portion of the medical report was not highlighted to the jury, nor was serosanguineous defined for them. The victim testified that she suffered no bleeding as a result of the rape.
The defendant also claims that trial counsel should have redacted a physician’s “clinical impression” of “sexual assault.” The defendant concedes that this clinical impression was admissible pursuant to G. L. c. 233, § 79G. He argues that the statement nonetheless should have been redacted as its admission in the absence of the procedures set forth in G. L. c. 233, § 79G, “denied [the defendant] the opportunity to subpoena [the doctor] and cross examine her during trial.” See Commonwealth v. Schutte, 52 Mass. App. Ct. 796, 799 n.2 (2001). The statute provides a notice procedure that serves to ensure that a party will not be blindsided by the opposing party’s introduction of medical records, but the defendant fails to explain how defense counsel’s own introduction of the records without compliance with the statute could have denied him the opportunity to cross-examine the doctor at trial.
The victim’s testimony of what happened at the hospital also demonstrated its investigative nature. She testified among other things that, once there, she was examined, and that hospital personnel used a “rape kit,” which is a kit for collecting evidence.
The victim’s full answer was “I knew he was — I knew he was standing over near the police cruiser talking to the cop. And at that time [the defendant’s] sisters and stuff and the rest of his family were coming to my site. So me and my mother went into the camper.” The defendant misleadingly ends his quotation of the victim’s response to the question whether she saw the defendant placed under arrest after the initial words, “I knew he was —.”